xorm

package module
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 Go to latest Published: Nov 18, 2020 License: BSD-3-Clause Imports: 57 Imported by: 0

README

xorm

xorm是一个简单而强大的Go语言ORM库. 通过它可以使数据库操作非常简便。

说明

  • 本库是基于原版 xorm：https://github.com/go-xorm/xorm 的定制增强版本，由于本定制版有第三方库依赖（原版xorm无任何第三方库依赖），原版xorm要保持对第三方库零依赖特性，所以只好单独开了本Github库。
  • 本库的相关定制功能是为了解决更简单的进行复杂SQL调用和一些特殊业务需求场景而开发的。
  • 本定制版ORM相关核心功能和原版保持一致，会跟随原版xorm更新。
  • 定制功能采用针对原版弱侵入性代码实现。

特性

  • 支持Struct和数据库表之间的灵活映射，并支持自动同步
  • 事务支持，支持嵌套事务（支持类JAVA Spring的事务传播机制）
  • 同时支持原始SQL语句和ORM操作的混合执行
  • 使用连写来简化调用
  • 支持使用Id, In, Where, Limit, Join, Having, Table, Sql, Cols等函数和结构体等方式作为条件
  • 支持级联加载Struct
  • 支持类ibatis方式配置SQL语句（支持xml配置文件、json配置文件、xsql配置文件，支持pongo2、jet、html/template模板和自定义实现配置多种方式）
  • 支持动态SQL功能
  • 支持一次批量混合执行多个CRUD操作，并返回多个结果集
  • 支持数据库查询结果直接返回Json字符串和xml字符串
  • 支持SqlMap配置文件和SqlTemplate模板密文存储和解析
  • 支持缓存
  • 支持主从数据库(Main/Subordinate)数据库读写分离
  • 支持根据数据库自动生成xorm的结构体
  • 支持记录版本（即乐观锁）
  • 支持查询结果集导出csv、tsv、xml、json、xlsx、yaml、html功能
  • 支持SQL Builder github.com/go-xorm/builder
  • 上下文缓存支持

驱动支持

目前支持的Go数据库驱动和对应的数据库如下：

安装

使用go工具进行安装：

go get -u github.com/xormplus/xorm

文档

传送门：本定制版《xorm操作指南》

快速开始

  • 第一步创建引擎，driverName, dataSourceName和database/sql接口相同
//xorm原版标准方式创建引擎
engine, err := xorm.NewEngine(driverName, dataSourceName)

//您也可以针对特定数据库及数据库驱动使用类似下面的快捷方式创建引擎
engine, err = xorm.NewPostgreSQL(dataSourceName)
engine, err = xorm.NewSqlite3(dataSourceName)
  • 创建引擎，且需要使用类ibatis方式配置SQL语句，参考如下方式
var err error
engine, err = xorm.NewPostgreSQL("postgres://postgres:root@localhost:5432/testdb?sslmode=disable")

if err != nil {
	t.Fatal(err)
}

/*--------------------------------------------------------------------------------------------------
1、使用RegisterSqlMap()注册SqlMap配置
2、RegisterSqlTemplate()方法注册SSqlTemplate模板配置
3、SqlMap配置文件总根目录和SqlTemplate模板配置文件总根目录可为同一目录
--------------------------------------------------------------------------------------------------*/

//注册SqlMap配置，可选功能，如应用中无需使用SqlMap，可无需初始化
//此处使用xml格式的配置，配置文件根目录为"./sql/oracle"，配置文件后缀为".xml"
err = x.RegisterSqlMap(xorm.Xml("./sql/oracle", ".xml"))
if err != nil {
	t.Fatal(err)
}
//注册动态SQL模板配置，可选功能，如应用中无需使用SqlTemplate，可无需初始化
//此处注册动态SQL模板配置，使用Pongo2模板引擎，配置文件根目录为"./sql/oracle"，配置文件后缀为".stpl"
err = x.RegisterSqlTemplate(xorm.Pongo2("./sql/oracle", ".stpl"))
if err != nil {
	t.Fatal(err)
}

//开启SqlMap配置文件和SqlTemplate配置文件更新监控功能，将配置文件更新内容实时更新到内存，如无需要可以不调用该方法
err = engine.StartFSWatcher()
if err != nil {
	t.Fatal(err)
}

  • db.RegisterSqlMap()过程

    • 使用RegisterSqlMap()方法指定SqlMap配置文件文件格式，配置文件总根目录，配置文件后缀名，RegisterSqlMap()方法按指定目录遍历所配置的目录及其子目录下的所有xml配置文件（配置文件样例）或json配置文件（配置文件样例）
    • 解析所有配置SqlMap的xml配置文件或json配置文件
    • xml配置文件中sql标签的id属性值作为SqlMap的key，如有重名id，则后加载的覆盖之前加载的配置sql条目
    • json配置文件中key值作为SqlMap的key，如有重名key，则后加载的覆盖之前加载的配置sql条目
    • json配置文件中key和xml配置文件中sql标签的id属性值有相互重名的，则后加载的覆盖之前加载的配置sql条目
    • 配置文件中sql配置会读入内存并缓存
    • 由于SqlTemplate模板能完成更多复杂组装和特殊场景需求等强大功能，故SqlMap的xml或json只提供这种极简配置方式，非ibatis的OGNL的表达式实现方式

  • db.RegisterSqlTemplate()过程

    • 使用RegisterSqlTemplate()方法指定SqlTemplate模板的模板引擎（支持pongo2、jet、html/template3种模板引擎，但只能选用一种，不能同时混用），配置文件总根目录，配置文件后缀名，RegisterSqlTemplate()方法按指定目录遍历所配置的目录及其子目录及其子目录下的所有stpl模板文件（模板文件样例）
    • 使用指定模板引擎解析stpl模板文件
    • stpl模板文件名作为SqlTemplate存储的key（不包含目录路径），如有不同路径下出现同名文件，则后加载的覆盖之前加载的配置模板内容
    • stpl模板内容会读入内存并缓存

  • 支持最原始的SQL语句查询

/*-------------------------------------------------------------------------------------
 * 第1种方式：返回的结果类型为 []map[string][]byte
-------------------------------------------------------------------------------------*/
sql_1_1 := "select * from user"
results, err := engine.QueryBytes(sql_1_1)

//SqlMapClient和SqlTemplateClient传参方式类同如下2种，具体参见第6种方式和第7种方式
sql_1_2 := "select id,userid,title,createdatetime,content from Article where id=?"
results, err := db.SQL(sql_1_2, 2).QueryBytes()

sql_1_3 := "select id,userid,title,createdatetime,content from Article where id=?id"
paramMap_1_3 := map[string]interface{}{"id": 2}
results, err := db.SQL(sql_1_3, &paramMap_1_3).QueryBytes()

/*-------------------------------------------------------------------------------------
 * 第2种方式：返回的结果类型为 []map[string]string
-------------------------------------------------------------------------------------*/
sql_2_1 := "select * from user"
results, err := engine.QueryString(sql_2_1)

//SqlMapClient和SqlTemplateClient传参方式类同如下2种，具体参见第6种方式和第7种方式
sql_2_2 := "select id,userid,title,createdatetime,content from Article where id=?"
results, err := db.SQL(sql_2_2, 2).QueryString()

sql_2_3 := "select id,userid,title,createdatetime,content from Article where id=?id"
paramMap_2_3 := map[string]interface{}{"id": 2}
results, err := db.SQL(sql_2_3, &paramMap_2_3).QueryString()

/*-------------------------------------------------------------------------------------
 * 第3种方式：返回的结果类型为 []map[string]xorm.Value
-------------------------------------------------------------------------------------*/
//xorm.Value类型本质是[]byte，具有一系列类型转换函数
sql_2_1 := "select * from user"
results, err := engine.QueryValue(sql_2_1)

//SqlMapClient和SqlTemplateClient传参方式类同如下2种，具体参见第6种方式和第7种方式
sql_2_2 := "select id,userid,title,createdatetime,content from Article where id=?"
results, err := db.SQL(sql_2_2, 2).QueryValue()
title := results[0]["title"].String()

sql_2_3 := "select id,userid,title,createdatetime,content from Article where id=?id"
paramMap_2_3 := map[string]interface{}{"id": 2}
results, err := db.SQL(sql_2_3, &paramMap_2_3).QueryValue()

/*-------------------------------------------------------------------------------------
 * 第4种方式：返回的结果类型为 xorm.Result
-------------------------------------------------------------------------------------*/
//xorm.Value类型本质是[]byte，具有一系列类型转换函数
sql_2_1 := "select * from user"
results, err := engine.QueryResult(sql_2_1).List()

//SqlMapClient和SqlTemplateClient传参方式类同如下2种，具体参见第6种方式和第7种方式
sql_2_2 := "select id,userid,title,createdatetime,content from Article where id=?"
result, err := db.SQL(sql_2_2, 2).QueryResult().List()
title := result[0]["createdatetime"].Time("2006-01-02T15:04:05.999Z")
content := result[0]["content"].NullString()

sql_2_3 := "select id,userid,title,createdatetime,content from Article where id=?id"
paramMap_2_3 := map[string]interface{}{"id": 2}
results, err := db.SQL(sql_2_3, &paramMap_2_3).QueryResult().List()

/*-------------------------------------------------------------------------------------
 * 第5种方式：返回的结果类型为 []map[string]interface{}
-------------------------------------------------------------------------------------*/
sql_3_1 := "select * from user"
results, err := engine.QueryInterface(sql_3_1)

//SqlMapClient和SqlTemplateClient传参方式类同如下2种，具体参见第6种方式和第7种方式
sql_3_2 := "select id,userid,title,createdatetime,content from Article where id=?"
results, err := db.SQL(sql_3_2, 2).QueryInterface()

sql_3_3 := "select id,userid,title,createdatetime,content from Article where id=?id"
paramMap_3_3 := map[string]interface{}{"id": 2}
results, err := db.SQL(sql_3_3, &paramMap_3_3).QueryInterface()

//Query方法返回的是一个ResultMap对象，它有List()，Count()，ListPage()，Json()，Xml()
//Xml()，XmlIndent()，SaveAsCSV()，SaveAsTSV()，SaveAsHTML()，SaveAsXML()，SaveAsXMLWithTagNamePrefixIndent()，
//SaveAsYAML()，SaveAsJSON()，SaveAsXLSX()系列实用函数
sql_3_4 := "select * from user"
//List()方法返回查询的全部结果集，类型为[]map[string]interface{}
results, err := engine.Sql(sql_3_4).Query().List()
//当然也支持这种方法，将数据库中的时间字段格式化，时间字段对应的golang数据类型为time.Time
//当然你也可以在数据库中先使用函数将时间类型的字段格式化成字符串，这里只是提供另外一种方式
//该方式会将所有时间类型的字段都格式化，所以请依据您的实际需求按需使用
results, err := engine.Sql(sql_3_4).QueryWithDateFormat("20060102").List()

sql_3_5 := "select * from user where id = ? and age = ?"
results, err := engine.Sql(sql_3_5, 7, 17).Query().List()

sql_3_6 := "select * from user where id = ?id and age = ?age"
paramMap_3_6 := map[string]interface{}{"id": 7, "age": 17}
results, err := engine.Sql(sql_3_6, &paramMap_3_6).Query().List()

//此Query()方法返回对象还支持ListPage()方法和Count()方法，这两个方法都是针对数据库查询出来后的结果集进行操作
//此Query()方法返回对象还支持Xml()方法、XmlIndent()方法和Json()方法，相关内容请阅读之后的章节
//ListPage()方法并非数据库分页方法，只是针对数据库查询出来后的结果集[]map[string]interface{}对象取部分切片
//例如以下例子，是取结果集的第1条到第50条记录
results, err := engine.Sql(sql_3_5, 7, 17).Query().ListPage(1,50)
//例如以下例子，是取结果集的第13条到第28条记录
results, err := engine.Sql(sql_3_5, 7, 17).Query().ListPage(13,28)
//此Count()方法也并非使用数据库count函数查询数据库某条件下的记录数，只是针对Sql语句对数据库查询出来后的结果集[]map[string]interface{}对象的数量
//此Count()方法也并非Engine对象和Session对象下的Count()方法，使用时请区分场景
count, err := engine.Sql(sql_3_5, 7, 17).Query().Count()

/*-------------------------------------------------------------------------------------
  第6种方式：执行SqlMap配置文件中的Sql语句，返回的结果类型为 []map[string]interface{}
-------------------------------------------------------------------------------------*/
sql_id_4_1 := "sql_4_1" //配置文件中sql标签的id属性,SqlMap的key
results, err := engine.SqlMapClient(sql_id_4_1).Query().List()

sql_id_4_2 := "sql_4_2"
results, err := engine.SqlMapClient(sql_id_4_2, 7, 17).Query().List()

sql_id_4_3 := "sql_4_3"
paramMap_4_3 := map[string]interface{}{"id": 7, "name": "xormplus"}
results1, err := engine.SqlMapClient(sql_id_4_3, &paramMap_4_3).Query().List()

/*-------------------------------------------------------------------------------------
 * 第7种方式：执行SqlTemplate配置文件中的Sql语句，返回的结果类型为 []map[string]interface{}
-------------------------------------------------------------------------------------*/
sql_key_5_1 := "select.example.stpl" //配置文件名,SqlTemplate的key

//执行的 sql：select * from user where id=7
//如部分参数未使用，请记得使用对应类型0值，如此处name参数值为空字符串，模板使用指南请详见pongo2
paramMap_5_1 := map[string]interface{}{"count": 2, "id": 7, "name": ""}
results, err := engine.SqlTemplateClient(sql_key_5_1, &paramMap_5_1).Query().List()

//执行的 sql：select * from user where name='xormplus'
//如部分参数未使用，请记得使用对应类型0值，如此处id参数值为0，模板使用指南请详见pongo2
paramMap_5_2 := map[string]interface{}{"id": 0, "count": 2, "name": "xormplus"}
results, err := engine.SqlTemplateClient(sql_key_5_1, &paramMap_5_2).Query().List()

/*-------------------------------------------------------------------------------------
 * 第8种方式：返回的结果类型为对应的[]interface{}
-------------------------------------------------------------------------------------*/
var categories []Category
err := engine.Sql("select * from category where id =?", 16).Find(&categories)

paramMap_6 := map[string]interface{}{"id": 2}
err := engine.Sql("select * from category where id =?id", &paramMap_6).Find(&categories)

/*-------------------------------------------------------------------------------------
 * 第9种方式：返回的结果类型为对应的[]interface{}
-------------------------------------------------------------------------------------*/
sql_id_7_1 := "sql_7_1"
var categories []Category
err := engine.SqlMapClient(sql_id_7_1, 16).Find(&categories)

sql_id_7_2 := "sql_7_2"
var categories []Category
paramMap_7_2 := map[string]interface{}{"id": 25}
err := engine.SqlMapClient(sql_id_7_2, &paramMap_7_2).Find(&categories)

/*-------------------------------------------------------------------------------------
 * 第10种方式：返回的结果类型为对应的[]interface{}
-------------------------------------------------------------------------------------*/
//执行的 sql：select * from user where name='xormplus'
sql_key_8_1 := "select.example.stpl" //配置文件名,SqlTemplate的key
var users []User
paramMap_8_1 := map[string]interface{}{"id": 0, "count": 2, "name": "xormplus"}
err := engine.SqlTemplateClient(sql_key_8_1, &paramMap_8_1).Find(&users)


/*-------------------------------------------------------------------------------------
 * 第11种方式：查询单条数据
 * 使用Sql,SqlMapClient,SqlTemplateClient函数与Get函数组合可以查询单条数据，以Sql与Get函数组合为例：
-------------------------------------------------------------------------------------*/
//获得单条数据的值，并存为结构体
var article Article
has, err := db.Sql("select * from article where id=?", 2).Get(&article)

//获得单条数据的值并存为map
var valuesMap1 = make(map[string]string)
has, err := db.Sql("select * from article where id=?", 2).Get(&valuesMap1)

var valuesMap2 = make(map[string]interface{})
has, err := db.Sql("select * from article where id=?", 2).Get(&valuesMap2)

var valuesMap3 = make(map[string]xorm.Value)
has, err := db.Sql("select * from article where id=?", 2).Get(&valuesMap3)

//获得单条数据的值并存为xorm.Record
record := make(xorm.Record)
has, err = session.SQL("select * from article where id=?", 2).Get(&record)
id := record["id"].Int64()
content := record["content"].NullString()

//获得单条数据某个字段的值
var title string
has, err := db.Sql("select title from article where id=?", 2).Get(&title)

var id int
has, err := db.Sql("select id from article where id=?", 2).Get(&id)

  • 注：

    • 除以上9种方式外，本库还支持另外3种方式，由于这3种方式支持一次性批量混合CRUD操作，返回多个结果集，且支持多种参数组合形式，内容较多，场景比较复杂，因此不在此处赘述。
    • 欲了解另外3种方式相关内容您可移步批量SQL操作章节，此3种方式将在此章节单独说明

  • 采用Sql(),SqlMapClient(),SqlTemplateClient()方法执行sql调用Find()方法，与ORM方式调用Find()方法不同（传送门：ORM方式操作数据库），此时Find()方法中的参数，即结构体的名字不需要与数据库表的名字映射（因为前面的Sql()方法已经确定了SQL语句），但字段名需要和数据库中的字段名字做映射。使用Find()方法需要自己定义查询返回结果集的结构体，如不想自己定义结构体可以使用Query()方法，返回[]map[string]interface{}，两种方式请依据实际需要选用。

    举例：多表联合查询例子如下

//执行的SQL如下，查询的是article表与category表，查询的表字段是这两个表的部分字段
sql := `SELECT
	article.id,
	article.title,
	article.isdraft,
	article.lastupdatetime,
	category.name as categoryname
FROM
	article,
	category
WHERE
	article.categorysubid = category. ID
AND category. ID = 4`

//我们可以定义一个结构体,注意：结构体中的字段名和上面执行的SQL语句字段名映射，字段数据类型正确
//当然你还可以给这个结构体加更多其他字段，但是如果执行上面的SQL语句时，这些其他字段只会被赋值对应数据类型的零值
type CategoryInfo struct {
	Id             int
	Title          string
	Categoryname   string
	Isdraft        int
	Lastupdatetime time.Time
}

var categoryinfo []CategoryInfo

//执行sql，返回值为error对象，同时查询的结果集会被赋值给[]CategoryInfo
err = db.Sql(sql).Find(&categoryinfo)
if err != nil {
	t.Fatal(err)
}
t.Log(categoryinfo)
t.Log(categoryinfo[0].Categoryname)
t.Log(categoryinfo[0].Id)
t.Log(categoryinfo[0].Title)
t.Log(categoryinfo[0].Isdraft)
t.Log(categoryinfo[0].Lastupdatetime)
  • 第4种和第7种方式所使用的SqlMap配置文件内容如下
<sqlMap>
	<sql id="sql_4_1">
		select * from user
	</sql>
	<sql id="sql_4_2">
		select * from user where id=? and age=?
	</sql>
    <sql id="sql_4_3">
		select * from user where id=?id and name=?name
	</sql>
    <sql id="sql_id_7_1">
		select * from category where id =?
	</sql>
    <sql id="sql_id_7_2">
		select * from category where id =?id
	</sql>
</sqlMap>
  • 第5种和第8种方式所使用的SqlTemplate配置文件内容如下，文件名：select.example.stpl，路径为engine.SqlMap.SqlMapRootDir配置目录下的任意子目录中。使用模板方式配置Sql较为灵活，可以使用pongo2引擎的相关功能灵活组织Sql语句以及动态SQL拼装。
select * from user
where
{% if count>1%}
id=?id
{% else%}
name=?name
{% endif %}
  • 执行一个SQL语句
//第1种方式
affected, err := engine.Exec("update user set age = ? where name = ?", age, name)

//第2种方式
sql_2 := "INSERT INTO config(key,value) VALUES (?, ?)"
affected, err := engine.Sql(sql_4, "OSCHINA", "OSCHINA").Execute()

//第3种方式
sql_i_1 := "sql_i_1" //SqlMap中key为 "sql_i_1" 配置的Sql语句为：INSERT INTO config(key,value) VALUES (?, ?)
affected, err := engine.SqlMapClient(sql_i_1, "config_1", "1").Execute()

sql_i_2 := "sql_i_2" //SqlMap中key为 "sql_i_2" 配置的Sql语句为：INSERT INTO config(key,value) VALUES (?key, ?value)
paramMap_i := map[string]interface{}{"key": "config_2", "value": "2"}
affected, err := engine.SqlMapClient(sql_i_2, &paramMap_i).Execute()

//第4种方式
sql_i_3 := "insert.example.stpl"
paramMap_i_t := map[string]interface{}{"key": "config_3", "value": "3"}
affected, err := engine.SqlTemplateClient(sql_i_3, &paramMap_i_t).Execute()

  • 注：

    • 除以上4种方式外，本库还支持另外3种方式，由于这3种方式支持一次性批量混合CRUD操作，返回多个结果集，且支持多种参数组合形式，内容较多，场景比较复杂，因此不在此处赘述。
    • 欲了解另外3种方式相关内容您可移步批量SQL操作章节，此4种方式将在此章节单独说明

  • 支持链式读取数据操作查询返回json或xml字符串

//第1种方式
var users []User
results,err := engine.Where("id=?", 6).Search(&users).Xml() //返回查询结果的xml字符串
results,err := engine.Where("id=?", 6).Search(&users).Json() //返回查询结果的json字符串

//第2种方式
sql := "select * from user where id = ?"
results, err := engine.Sql(sql, 2).Query().Json() //返回查询结果的json字符串
results, err := engine.Sql(sql, 2).QueryWithDateFormat("20060102").Json() //返回查询结果的json字符串，并支持格式化日期
results, err := engine.Sql(sql, 2).QueryWithDateFormat("20060102").Xml() //返回查询结果的xml字符串，并支持格式化日期

sql := "select * from user where id = ?id and userid=?userid"
paramMap := map[string]interface{}{"id": 6, "userid": 1} //支持参数使用map存放
results, err := engine.Sql(sql, &paramMap).Query().XmlIndent("", "  ", "article") //返回查询结果格式化后的xml字符串

//第3种方式
sql_id_3_1 := "sql_3_1" //配置文件中sql标签的id属性,SqlMap的key
results, err := engine.SqlMapClient(sql_id_3_1, 7, 17).Query().Json() //返回查询结果的json字符串

sql_id_3_2 := "sql_3_2" //配置文件中sql标签的id属性,SqlMap的key
paramMap := map[string]interface{}{"id": 6, "userid": 1} //支持参数使用map存放
results, err := engine.SqlMapClient(sql_id_3_2, &paramMap).Query().Xml() //返回查询结果的xml字符串

//第4种方式
sql_key_4_1 := "select.example.stpl"
paramMap_4_1 := map[string]interface{}{"id": 6, "userid": 1}
results, err := engine.SqlTemplateClient(sql_key_4_1, &paramMap_4_1).Query().Json()
  • 支持链式读取数据操作查询返回某条记录的某个字段的值
//第1种方式
id := engine.Sql(sql, 2).Query().Results[0]["id"] //返回查询结果的第一条数据的id列的值

//第2种方式
id := engine.SqlMapClient(key, 2).Query().Results[0]["id"] //返回查询结果的第一条数据的id列的值
id := engine.SqlMapClient(key, &paramMap).Query().Results[0]["id"] //返回查询结果的第一条数据的id列的值

//第3种方式
id := engine.SqlTemplateClient(key, &paramMap).Query().Results[0]["id"] //返回查询结果的第一条数据的id列的值
  • 在sqltemplate中使用自定义函数（目前暂支持默认的HTMLTemplate，其他两种TODO，但也有变通方法使用）
//定义的自定义函数
func ShowTimestamp(now time.Time) string {
	return fmt.Sprintf("%d", now.Unix())
}

func main() {
	engine, err := xorm.NewEngine("mysql", fmt.Sprintf("%s:%s@tcp(%s:%s)/%s?charset=utf8&parseTime=True&loc=Local", "root", "", "127.0.0.1", "3306", "mysql"))
	if err != nil {
		panic(err)
	}
	engine.ShowExecTime(true)
	engine.ShowSQL(true)
	tpl := xorm.Default("./templates", ".tpl")
	tpl.SetFuncs("test.tpl", xorm.FuncMap{"ShowTimestamp": ShowTimestamp})
	err = engine.RegisterSqlTemplate(tpl)
	if err != nil {
		panic(err)
	}
	result := engine.SqlTemplateClient("test.tpl",&map[string]interface{}{"now":time.Now()}).Query()
}

//模板中编写的sql内容如下
select * from user{{ShowTimestamp .now}}

事务模型

  • 本xorm版本同时支持简单事务模型和嵌套事务模型进行事务处理，当使用简单事务模型进行事务处理时，需要创建Session对象，另外当使用Sql()、SqlMapClient()、SqlTemplateClient()方法进行操作时也推荐手工创建Session对象方式管理Session。在进行事务处理时，可以混用ORM方法和RAW方法。注意如果您使用的是mysql，数据库引擎为innodb事务才有效，myisam引擎是不支持事务的。示例代码如下：

  • 事务的简写方法

res, err := engine.Transaction(func(session *xorm.Session) (interface{}, error) {
   user1 := Userinfo{Username: "xiaoxiao", Departname: "dev", Alias: "lunny", Created: time.Now()}
   if _, err := session.Insert(&user1); err != nil {
       return nil, err
   }
    user2 := Userinfo{Username: "yyy"}
   if _, err := session.Where("id = ?", 2).Update(&user2); err != nil {
       return nil, err
   }
    if _, err := session.Exec("delete from userinfo where username = ?", user2.Username); err != nil {
       return nil, err
   }
   return nil, nil
})
  • Context Cache, if enabled, current query result will be cached on session and be used by next same statement on the same session.
	sess := engine.NewSession()
	defer sess.Close()
 	var context = xorm.NewMemoryContextCache()
 	var c2 ContextGetStruct
	has, err := sess.ID(1).ContextCache(context).Get(&c2)
	assert.NoError(t, err)
	assert.True(t, has)
	assert.EqualValues(t, 1, c2.Id)
	assert.EqualValues(t, "1", c2.Name)
	sql, args := sess.LastSQL()
	assert.True(t, len(sql) > 0)
	assert.True(t, len(args) > 0)
 	var c3 ContextGetStruct
	has, err = sess.ID(1).ContextCache(context).Get(&c3)
	assert.NoError(t, err)
	assert.True(t, has)
	assert.EqualValues(t, 1, c3.Id)
	assert.EqualValues(t, "1", c3.Name)
	sql, args = sess.LastSQL()
	assert.True(t, len(sql) == 0)
	assert.True(t, len(args) == 0)
  • 简单事务模型的一般用法
session := engine.NewSession()
defer session.Close()
// add Begin() before any action
err := session.Begin()
user1 := Userinfo{Username: "xiaoxiao", Departname: "dev", Alias: "lunny", Created: time.Now()}
_, err = session.Insert(&user1)
if err != nil {
    session.Rollback()
    return
}
user2 := Userinfo{Username: "yyy"}
_, err = session.Where("id = ?", 2).Update(&user2)
if err != nil {
    session.Rollback()
    return
}

_, err = session.Exec("delete from userinfo where username = ?", user2.Username)
if err != nil {
    session.Rollback()
    return
}

// add Commit() after all actions
err = session.Commit()
if err != nil {
    return
}
  • 嵌套事务模型

在实际业务开发过程中我们会发现依然还有一些特殊场景，我们需要借助嵌套事务来进行事务处理。本xorm版本也提供了嵌套事务的支持。当使用嵌套事务模型进行事务处理时，同样也需要创建Session对象，与使用简单事务模型进行事务处理不同在于，使用session.Begin()创建简单事务时，直接在同一个session下操作，而使用嵌套事务模型进行事务处理时候，使用session.BeginTrans()创建嵌套事务时，将返回Transaction实例，后续操作则在同一个Transaction实例下操作。在进行具体数据库操作时候，则使用tx.Session() API可以获得当前事务所持有的session会话，从而进行Get()，Find()，Execute()等具体数据库操作。

session := engine.NewSession()
defer session.Close()
// add BeginTrans() before any action
tx, err := session.BeginTrans()
if err != nil {
    return
}

user1 := Userinfo{Username: "xiaoxiao", Departname: "dev", Alias: "lunny", Created: time.Now()}
_, err = tx.Session().Insert(&user1)
if err != nil {
    tx.Rollback()
    return
}

user2 := Userinfo{Username: "yyy"}
_, err = tx.Session().Where("id = ?", 2).Update(&user2)
if err != nil {
    tx.RollbackTrans()
    return
}

_, err = tx.Session().Exec("delete from userinfo where username = ?", user2.Username)
if err != nil {
    tx.RollbackTrans()
    return
}

_, err = tx.Session().SqlMapClient("delete.userinfo", user2.Username).Execute()
if err != nil {
    tx.RollbackTrans()
    return
}

// add CommitTrans() after all actions
err = tx.CommitTrans()
if err != nil {
    ...
    return
}

本定制版xorm支持嵌套事务（类JAVA Spring的事务传播机制），这部分内容较多，详细了解请您移步本定制版《xorm操作指南》

SqlMap及SqlTemplate

  • SqlMap及SqlTemplate相关功能API
//注册SqlMap配置，xml格式
err := engine.RegisterSqlMap(xorm.Xml("./sql/oracle", ".xml"))
//注册SqlMap配置，json格式
err := engine.RegisterSqlMap(xorm.Json("./sql/oracle", ".json"))
//注册SqlTemplate配置，使用Pongo2模板引擎
err := engine.RegisterSqlTemplate(xorm.Pongo2("./sql/oracle", ".stpl"))
//注册SqlTemplate配置，使用Jet模板引擎
err := engine.RegisterSqlTemplate(xorm.Jet("./sql/oracle", ".jet"))
//注册SqlTemplate配置，使用html/template模板引擎
err := engine.RegisterSqlTemplate(xorm.Default("./sql/oracle", ".tpl"))


//开启SqlMap配置文件和SqlTemplate配置文件更新监控功能，将配置文件更新内容实时更新到内存，如无需要可以不调用该方法
//该监控模式下，如删除配置文件，内存中不会删除相关配置
engine.StartFSWatcher()
//停止SqlMap配置文件和SqlTemplate配置文件更新监控功能
engine.StopFSWatcher()

/*------------------------------------------------------------------------------------
1、以下方法是在没有engine.RegisterSqlMap()和engine.RegisterSqlTemplate()初始化相关配置文件的情况下让您在代码中可以轻松的手动管理SqlMap配置及SqlTemplate模板。
2、engine.RegisterSqlMap()和engine.RegisterSqlTemplate()初始化相关配置文件之后也可以使用以下方法灵活的对SqlMap配置及SqlTemplate模板进行管理
3、方便支持您系统中其他初始化配置源，可不依赖于本库的初始化配置方式
4、可在代码中依据业务场景，动态的添加、更新、删除SqlMap配置及SqlTemplate模板
5、手工管理的SqlMap配置及SqlTemplate模板，与xorm初始化方法一样会将相关配置缓存，但不会生成相关配置文件
-----------------------------------------------------------------------------------*/
engine.LoadSqlMap(filepath) //加载指定文件的SqlMap配置
engine.ReloadSqlMap(filepath) //重新加载指定文件的SqlMap配置

engine.BatchLoadSqlMap([]filepath) //批量加载SqlMap配置
engine.BatchReloadSqlMap([]filepath) //批量加载SqlMap配置

engine.GetSql(key, sql) //获取一条SqlMap配置
engine.AddSql(key, sql) //新增一条SqlMap配置
engine.UpdateSql(key, sql) //更新一条SqlMap配置
engine.RemoveSql(key) //删除一条SqlMap配置

engine.BatchAddSql(map[key]sql) //批量新增SqlMap配置
engine.BatchUpdateSql(map[key]sql) //批量更新SqlMap配置
engine.BatchRemoveSql([]key) //批量删除SqlMap配置

engine.SqlTemplate.LoadSqlTemplate(filepath) //加载指定文件的SqlTemplate模板
engine.SqlTemplate.ReloadSqlTemplate(filepath) //重新加载指定文件的SqlTemplate模板

engine.SqlTemplate.BatchLoadSqlTemplate([]filepath) //批量加载SqlTemplate模板
engine.SqlTemplate.BatchReloadSqlTemplate([]filepath) //批量加载SqlTemplate模板

engine.SqlTemplate.AddSqlTemplate(key, sql) //新增一条SqlTemplate模板，sql为SqlTemplate模板内容字符串
engine.SqlTemplate.UpdateSqlTemplate(key, sql) //更新一条SqlTemplate模板，sql为SqlTemplate模板内容字符串
engine.SqlTemplate.RemoveSqlTemplate(key) //删除一条SqlTemplate模板

engine.BatchAddSqlTemplate(map[key]sql) //批量新增SqlTemplate配置，sql为SqlTemplate模板内容字符串
engine.BatchUpdateSqlTemplate(map[key]sql) //批量更新SqlTemplate配置，sql为SqlTemplate模板内容字符串
engine.batchUpdateSqlTemplate([]key) //批量删除SqlTemplate配置

/*
1、指定多个key，批量查询SqlMap配置,...key的数据类型为...interface{},返回类型为map[string]string
2、支持如下多种调用方式
	a)engine.GetSqlMap("Test_GetSqlMap_1"),返回key为Test_GetSqlMap_1的SqlMap配置
    b)engine.GetSqlMap("Test_GetSqlMap_1", "Test_GetSqlMap_3"),返回key为Test_GetSqlMap_1,Test_GetSqlMap_3的SqlMap配置
    c)engine.GetSqlMap("Test_GetSqlMap_1", "Test_GetSqlMap_3","Test_GetSqlMap_null"),返回key为Test_GetSqlMap_1,Test_GetSqlMap_3的SqlMap，Test_GetSqlMap_null配置，其中Test_GetSqlMap_null在内存中缓存的的key不存在，则在返回的map[string]string中，key Test_GetSqlMap_null配置返回的值为空字符串
    d)engine.GetSqlMap([]string{"Test_GetSqlMap_1", "Test_GetSqlMap_3"})支持字符串数组形式参数
    e)engine.GetSqlMap([]string{"Test_GetSqlMap_1", "Test_GetSqlMap_3"},"Test_GetSqlMap_2")支持字符串数组形式和字符串参数混用
    f)engine.GetSqlMap([]string{"Test_GetSqlMap_1", "Test_GetSqlMap_3"},"Test_GetSqlMap_2"，3)支持字符串数组形式，字符串参数和其他类型参数混用，但查询时只会处理字符串类型参数和字符转数组类型参数（因为SqlMap的key是字符串类型），返回的map[string]string也无其他类型的key
3、如不传任何参数，调用engine.GetSqlMap()，则返回整个内存中当前缓存的所有SqlMap配置
*/
engine.GetSqlMap(...key)

/*
1、指定多个key，批量查询SqlTemplate配置,...key的数据类型为...interface{},返回类型为map[string]*pongo2.Template
2、支持如下多种调用方式
	a)engine.GetSqlTemplates("Test_GetSqlTemplates_1"),返回key为Test_GetSqlTemplates_1的SSqlTemplate配置
    b)engine.GetSqlTemplates("Test_GetSqlTemplates_1", "Test_GetSqlTemplates_3"),返回key为Test_GetSqlTemplates_1,Test_GetSqlTemplates_3的SqlTemplate配置
    c)engine.GetSqlTemplates("Test_GetSqlTemplates_1", "Test_GetSqlTemplates_3","Test_GetSqlTemplates_null"),返回key为Test_GetSqlTemplates_1,Test_GetSqlTemplates_3的SqlMap，Test_GetSqlMap_null配置，其中Test_GetSqlTemplates_null在内存中缓存的的key不存在，则在返回的map[string]*pongo2.Template中，key Test_GetSqlTemplates_null配置返回的值为nil
    d)engine.GetSqlTemplates([]string{"Test_GetSqlTemplates_1", "Test_GetSqlTemplates_3"})支持字符串数组形式参数
    e)engine.GetSqlTemplates([]string{"Test_GetSqlTemplates_1", "Test_GetSqlTemplates_3"},"Test_GetSqlTemplates_2")支持字符串数组形式和字符串参数混用
    f)engine.GetSqlTemplates([]string{"Test_GetSqlTemplates_1", "Test_GetSqlTemplates_3"},"Test_GetSqlTemplates_2"，3)支持字符串数组形式，字符串参数和其他类型参数混用，但查询时只会处理字符串类型参数和字符转数组类型参数（因为SqlTemplate的key是字符串类型），返回的map[string]*pongo2.Template也无其他类型的key
3、如不传任何参数，调用engine.GetSqlTemplates()，则返回整个内存中当前缓存的所有SqlTemplate配置
4、engine.GetSqlTemplates()返回类型为map[string]*pongo2.Template，可以方便的实现链式调用pongo2的Execute()，ExecuteBytes()，ExecuteWriter()方法
*/
engine.SqlTemplate.GetSqlTemplates(...key)
  • SqlMap配置文件及SqlTemplate模板加密存储及解析
    • 出于系统信息安全的原因，一些大公司有自己的信息安全规范。其中就有类似这样的配置文件不允许明文存储的需求，本xorm定制版本也内置了一些API对SqlMap配置文件及SqlTemplate模板密文存储解析的需求进行支持。
    • 本库内置提供了AES，DES，3DES，RSA四种加密算法支持SqlMap配置文件及SqlTemplate模板加解密存储解析功能。其中，AES，DES，3DES和标准实现略有不同，如不提供key，本库会提供了一个内置key，当然您也可以设置自己的key。RSA支持公钥加密私钥解密和私钥加密公钥解密两种模式。
    • 本库还提供一个批量配置文件加密工具，采用sciter的Golang绑定库实现。工具传送门：xorm tools。
    • 除以上4种内置加解密算法外，本库也支持自定义加解密算法功能，您也可以使用自己实现的加密解密算法，只需要实现Cipher接口即可。
    • 内存中缓存的是经指定解密算法解密之后的配置文件内容或模板内容。
    • SqlMap配置文件及SqlTemplate模板加密存储及解析具体示例如下：
//如需使用自定义的加密解密算法，只需实现Cipher接口即可
type Cipher interface {
	Encrypt(strMsg string) ([]byte, error)
	Decrypt(src []byte) (decrypted []byte, err error)
}

//SqlMapOptions中的Cipher实现了加密和解密方法
type SqlMapOptions struct {
	Capacity  uint
	Extension string
	Cipher    Cipher
}

//SqlTemplateOptions中的Cipher实现了加密和解密方法
type SqlTemplateOptions struct {
	Capacity  uint
	Extension string
	Cipher    Cipher
}


//如现在我们已经使用3DES加密了SqlMap配置文件和SqlTemplate模板，则xorm初始化方式如下
var err error
engine, err = xorm.NewPostgreSQL("postgres://postgres:root@localhost:5432/mblog?sslmode=disable")

if err != nil {
	t.Fatal(err)
}

enc := &xorm.AesEncrypt{
		PubKey: "122334",
	}
//如自定义加解密算法，则此处传入的enc为自己实现的加解密算法，后续代码与本示例一致
err = x.RegisterSqlMap(xorm.Xml("./sql/aes", ".xml"), enc)

if err != nil {
	t.Fatal(err)
}
//这里也可以new其他加密解密算法，SqlMap配置文件和SqlTemplate模板的加密结算算法可不相同
err = x.RegisterSqlTemplate(xorm.Pongo2("./sql/aes", ".stpl"), enc)
if err != nil {
	t.Fatal(err)
}

//内置4种加密算法如下
type AesEncrypt struct {
	PubKey string
}

type DesEncrypt struct {
	PubKey string
}

type TripleDesEncrypt struct {
	PubKey string
}

//RSA加密解密算法支持公钥加密私钥解密和私钥加密公钥解密两种模式，请合理设置DecryptMode
type RsaEncrypt struct {
	PubKey      string
	PriKey      string
	pubkey      *rsa.PublicKey
	prikey      *rsa.PrivateKey
	EncryptMode int
	DecryptMode int
}

const (
	RSA_PUBKEY_ENCRYPT_MODE = iota //RSA公钥加密
	RSA_PUBKEY_DECRYPT_MODE        //RSA公钥解密
	RSA_PRIKEY_ENCRYPT_MODE        //RSA私钥加密
	RSA_PRIKEY_DECRYPT_MODE        //RSA私钥解密
)

//RSA使用示例
pukeyStr := `-----BEGIN PUBLIC KEY-----
	MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyqyVCWQBeIgY4FyLnrA1
	viOq9m++OyUwXIvpEH7zN7MjeJp7nSK5PBkvv81zIbQrMQXQzTuE52QjYfMfHVoq
	FyK+Qxw+B/1qY3TACj8b4TlDS0IrII9u1QBRhGHmtmqJ5c6As/rIqYLQCdbmycC0
	3iKBM8990Pff8uq+jqzsoQCFDexZClprR6Vbz3S1ejoFLuDUAXUfNrsudQ/7it3s
	Vn540kh4a9MKeSOg68TSmKKQe1huTF03uDAdPuDveFpVU/l7nETH8mFoW06QvvJR
	6Dh6FC9LzJA6EOK4fNGeDzJg9e2jByng/ubJM6WeU29uri2zwnMGQ3qsCuGMXBS/
	yQIDAQAB
	-----END PUBLIC KEY-----`

var err error
engine, err = xorm.NewPostgreSQL("postgres://postgres:root@localhost:5432/mblog?sslmode=disable")

if err != nil {
	t.Fatal(err)
}
//公钥解密
enc := new(xorm.RsaEncrypt)
enc.PubKey = pukeyStr
enc.DecryptMode = xorm.RSA_PUBKEY_DECRYPT_MODE
err = engine.RegisterSqlMap(xorm.Xml("./sql/rsa", ".xml"), enc)
if err != nil {
	t.Fatal(err)
}

err = engine.RegisterSqlTemplate(xorm.Pongo2("./sql/rsa", ".stpl"), enc)
if err != nil {
	t.Fatal(err)
}

/*----------------------------------------------------------------------------------------------------
其他相关API
1.ClearSqlMapCipher()可清除SqlMap中设置的Cipher，这样可以使用engine.LoadSqlMap(filepath)手工加载一些没有加密的配置文件
2.如果您之后又想加载一些其他加密算法存储的配置文件，也可以先清除，再重新SetSqlMapCipher()之后加载
3.当然，配置文件也可以不加密存储，遇到需要部分加密存储的配置文件可以手工调用SetSqlMapCipher()之后加载
4.注意InitSqlMap()是对整个SqlMapRootDir做统一操作，如您有区别对待的配置文件，请自行设置隔离目录，使用ClearSqlMapCipher()或SetSqlMapCipher()后调用LoadSqlMap()方法进行指定处理。
----------------------------------------------------------------------------------------------------*/
engine.ClearSqlMapCipher()
engine.SetSqlMapCipher(cipher)

/*----------------------------------------------------------------------------------------------------
1.ClearSqlTemplateCipher()可清除SqlTemplate中设置的Cipher，这样可以使用engine.LoadSqlTemplate(filepath)手工加载一些没有加密的模板文件
2.如果您之后又想加载一些其他加密算法存储的模板文件，也可以先清除，再重新SetSqlTemplateCipher()之后加载
3.当然，配置文件也可以不加密存储，遇到需要部分加密存储的配置文件可以手工调用SetSqlTemplateCipher()之后加载
4.注意InitSqlMap()是对整个SqlTemplateRootDir做统一操作，如您有区别对待的配置文件，请自行设置隔离目录，使用ClearSqlTemplateCipher()或SetSqlTemplateCipher()后调用LoadSqlTemplate()方法进行指定处理。
----------------------------------------------------------------------------------------------------*/
engine.ClearSqlTemplateCipher()
engine.SetSqlTemplateCipher(cipher)
# 批量SQL操作 * 批量SQL操作API 
//第一种方式，可以从Engine对象轻松进行使用，该方式自动管理事务，注意如果您使用的是mysql，数据库引擎为innodb事务才有效，myisam引擎是不支持事务的。

engine.Sqls(sqls, parmas...).Execute()
engine.SqlMapsClient(sqlkeys, parmas...).Execute()
engine.SqlTemplatesClient(sqlkeys, parmas...).Execute()

//第2种方式，手动创建Session对象进行调用，该方式需要您手动管理事务
session := engine.NewSession()
defer session.Close()
// add Begin() before any action
tx,err := session.Begin()


_, err = tx.Session().Exec("delete from userinfo where username = ?", user2.Username)
if err != nil {
    tx.Rollback()
    return
}

//Execuet返回值有3个，分别为slice,map,error类型
results, _, err = tx.Session().Sqls(sqls, parmas...).Execute()
if err != nil {
    tx.Rollback()
    return
}

_, results, err = tx.Session().SqlMapsClient(sqlkeys, parmas...).Execute()
if err != nil {
    tx.Rollback()
    return
}

results, _, err = tx.Session().SqlTemplatesClient(sqlkeys, parmas...).Execute()
if err != nil {
    tx.Rollback()
    return
}

// add Commit() after all actions
err = tx.Commit()
if err != nil {
    return
}

//支持两种返回结果集
//Slice形式类似如下
/*
[
    [
        {
            "id": "6",
            "name": "xorm"
        },
        {
            "id": "7",
            "name": "xormplus"
        },
        {
            "id": "8",
            "name": "ibatis"
        }
    ],
    [
        {
            "LastInsertId": 0,
            "RowsAffected": 0
        }
    ],
    [
        {
            "LastInsertId": 0,
            "RowsAffected": 0
        }
    ],
    [
        {
            "LastInsertId": 13,
            "RowsAffected": 1
        }
    ]
]
 */

//Map形式类似如下
/*
{
    "deleteUser": [
        {
            "LastInsertId": 0,
            "RowsAffected": 0
        }
    ],
    "insertUser": [
        {
            "LastInsertId": 11,
            "RowsAffected": 1
        }
    ],
    "updateUser": [
        {
            "LastInsertId": 0,
            "RowsAffected": 0
        }
    ],
    "userList": [
        {
            "id": "3",
            "name": "xorm"
        },
        {
            "id": "4",
            "name": "xormplus"
        },
    ]
}
*/

  • Sqls(sqls, parmas...)方法说明：

    1. sqls参数
    1. parmas...参数
    • 可以接收0个参数或则1个参数，当所有执行单元都无需执行参数时候，可以不传此参数
    • parmas参数数据类型为interface{}，但实际参数类型检查时，只支持map[string]interface{}，[]map[string]interface{}和map[string]map[string]interface{}三种类型，使用其他类型均会返回参数类型错误。
    • 使用map[string]interface{}类型时候，sqls参数类型必须为string类型，即map[string]interface{}类型为单条Sql执行单元的参数。
    • 使用[]map[string]interface{}类型时候，sqls参数类型可以为string类型，此时只有第一个元素[0]map[string]interface{}会被提取，之后的元素将不起任何作用。同时，sqls参数类型也可以为[]string类型，这种参数组合是最常用的组合形式之一，sqls参数的索引和parmas参数的索引一一对应。当某个索引所对应的Sql执行单元是无参数的时候，请将此索引的值设为nil，即parmas[i] = nil
    • 使用map[string]map[string]interface{}类型时，sqls参数类型必须为map[string]string类型，这种参数组合是最常用的组合形式之一，sqls参数的key和parmas参数的key一一对应。当某个key所对应的Sql执行单元是无参数的时候，请将此key的值设为nil，即parmas[key] = nil

  • SqlMapsClient(sqlkeys, parmas...)方法说明：

    1. sqlkeys参数
    • sqlkeys参数数据类型为interface{}类型，但实际参数类型检查时，只支持string，[]string和map[string]string三中类型，使用其他类型均会返回参数类型错误。
    • 使用string类型则为执行单条Sql执行单元（Sql执行单元定义），即在xorm种缓存的SqlMap中的key所对应的配置项，Execute()方法返回的结果集数据类型为[][]map[string]interface{}，只有1个元素。
    • 使用[]string则Execute()方法为有序执行多条Sql执行单元，Execute()方法返回的结果集数据类型为[][]map[string]interface{}类型，结果集元素个数与sqls参数的元素个数相同，sqlkeys的索引与返回结果集的索引一一对应，sqlkeys存储的是每个元素的值是xorm缓存的SqlMap的key
    • 使用map[string]string类型则Execute()方法为无序执行多条Sql执行单元，Execute()方法返回的结果集数据类型为map[string][]map[string]interface{}，sqlkeys的key与返回结果集的key一一对应，sqlkeys存储的是每个键值对的值是xorm缓存的SqlMap的key
    1. parmas...参数
    • 可以接收0个参数或则1个参数，当所有执行单元都无需执行参数时候，可以不传此参数
    • parmas参数数据类型为interface{}，但实际参数类型检查时，只支持map[string]interface{}，[]map[string]interface{}和map[string]map[string]interface{}三种类型，使用其他类型均会返回参数类型错误。
    • 使用map[string]interface{}类型时候，sqlkeys参数类型必须为string类型，即map[string]interface{}类型为单条Sql执行单元的参数。效果等同SqlMapClient()方法（请注意本方法名为SqlMapsClient）。
    • 使用[]map[string]interface{}类型时候，sqlkeys参数类型支持两种：
      • 第1种为string类型，此时只有第一个元素[0]map[string]interface{}会被提取，之后的元素将不起任何作用。
      • 第2种为[]string类型，这种参数组合是最常用的组合形式之一，sqlkeys参数的索引和parmas参数的索引一一对应。当某个索引所对应的Sql执行单元是无参数的时候，请将此索引的值设为nil，即parmas[i] = nil
    • 使用map[string]map[string]interface{}类型时，sqlkeys参数类型必须为map[string]string类型，这种参数组合是最常用的组合形式之一，sqlkeys参数的key和parmas参数的key一一对应。当某个key所对应的Sql执行单元是无参数的时候，请将此key的值设为nil，即parmas[key] = nil

  • SqlTemplatesClient(sqlkeys, parmas...)方法说明：

    1. sqlkeys参数
    • sqlkeys参数数据类型为interface{}类型，但实际参数类型检查时，只支持string，[]string和map[string]string三中类型，使用其他类型均会返回参数类型错误。
    • 使用string类型则为执行单条Sql执行单元（Sql执行单元定义），即在xorm缓存的SqlTemplate中的key所对应的模板，Execute()方法返回的结果集数据类型为[][]map[string]interface{}，只有1个元素。
    • 使用[]string则Execute()方法为有序执行多条Sql执行单元，Execute()方法返回的结果集数据类型为[][]map[string]interface{}类型，结果集元素个数与sqls参数的元素个数相同，sqlkeys的索引与返回结果集的索引一一对应，sqlkeys存储的是每个元素的值是xorm缓存的SqlTemplate的key
    • 使用map[string]string类型则Execute()方法为无序执行多条Sql执行单元，Execute()方法返回的结果集数据类型为map[string][]map[string]interface{}，sqlkeys的key与返回结果集的key一一对应，sqlkeys存储的是每个键值对的值是xorm缓存的SqlTemplate的key
    1. parmas...参数
    • 可以接收0个参数或则1个参数，当所有执行单元都无需执行参数时候，可以不传此参数
    • parmas参数数据类型为interface{}，但实际参数类型检查时，只支持map[string]interface{}，[]map[string]interface{}和map[string]map[string]interface{}三种类型，使用其他类型均会返回参数类型错误。
    • 使用map[string]interface{}类型时候，sqlkeys参数类型必须为string类型，即map[string]interface{}类型为单条Sql执行单元的参数。效果等同SqlMapClient()方法（请注意本方法名为SqlMapsClient）。
    • 使用[]map[string]interface{}类型时候，sqlkeys参数类型支持两种：
      • 第1种为string类型，此时只有第一个元素[0]map[string]interface{}会被提取，之后的元素将不起任何作用；
      • 第2种为[]string类型，这种参数组合是最常用的组合形式之一，sqlkeys参数的索引和parmas参数的索引一一对应。当某个索引所对应的Sql执行单元是无参数的时候，请将此索引的值设为nil，即parmas[i] = nil
    • 使用map[string]map[string]interface{}类型时，sqlkeys参数类型必须为map[string]string类型，这种参数组合是最常用的组合形式之一，sqlkeys参数的key和parmas参数的key一一对应。当某个key所对应的Sql执行单元是无参数的时候，请将此key的值设为nil，即parmas[key] = nil

  • Execute()方法说明：

    • 一共3个返回值，([][]map[string]interface{}, map[string][]map[string]interface{}, error)
    • 当以上3个方法的sqls或sqlkeys参数为string或[]string时为有序执行Sql执行单元，故返回结果集为第一个返回值，Slice存储，第二返回值为nil
    • 当以上3个方法的sqls或sqlkeys参数为map[string]string时为无序执行Sql执行单元，返回结果集为第二个返回值，map存储，第一个返回值为nil
    • 当以上3个方法执行中出现错误，则第三个返回值有值，前2个返回值均为nil

  • Sql执行单元定义
    • 当sqls为string时候，则Sql执行单元为该字符串的内容
    • 当sqlkeys为string时，则Sql执行单元为所对应的SqlMap配置项或SqlTemplate模板
    • 当sqls为[]string或map[string]string时候，则Sql执行单元为相关元素的字符串内容
    • 当sqlkeys为[]string或map[string]string时候，则Sql执行单元为以相关元素为key所对应的SqlMap配置项或SqlTemplate模板
    • Sql执行单元的具体内容，必须以"select", "insert", "delete", "update", "create", "drop"为起始内容,但后续内容不会继续做检查，请合理定义Sql执行单元内容。当执行单元内容不是以上起始内容，则对应索引或key返回的结果集为nil，请注意对返回结果集的nil判断
    • Sql执行单元并非单条Sql语句，当执行insert，delete，update，create，drop操作时候，可以为多条Sql语句，这里需要对应的数据库的SQL语法支持。如在一个执行单元批量执行多条Sql，返回结果集作为一组所有执行单元的大结果集中的一个元素，这个结果集的数据类型为map[string]interface{}，只有2个键值对，一个键值对的key为LastInsertId，一个键值对的key为RowsAffected，请控制好执行粒度。另外，目前不是所有数据库都支持返回LastInsertId，目前还在设计更通用的API来实现所有数据库都能支持此功能。
    • 当执行select操作时候，执行单元的Sql语句必须为一条，返回结果集作为一组所有执行单元的大结果集中的一个元素
    • insert，delete，update，create，drop操作不能和select操作混合定义在同一个执行单元中
    • 最后，Sql执行单元基于以上约定，请合理组织

ORM方式操作数据库

  • 定义一个和表同步的结构体，并且自动同步结构体到数据库
type User struct {
    Id int64
    Name string
    Salt string
    Age int
    Passwd string `xorm:"varchar(200)"`
    Created time.Time `xorm:"created"`
    Updated time.Time `xorm:"updated"`
}

err := engine.Sync2(new(User))
  • ORM方式插入一条或者多条记录
affected, err := engine.Insert(&user)
// INSERT INTO struct () values ()
affected, err := engine.Insert(&user1, &user2)
// INSERT INTO struct1 () values ()
// INSERT INTO struct2 () values ()
affected, err := engine.Insert(&users)
// INSERT INTO struct () values (),(),()
affected, err := engine.Insert(&user1, &users)
// INSERT INTO struct1 () values ()
// INSERT INTO struct2 () values (),(),()
  • ORM方式查询单条记录
has, err := engine.Get(&user)
// SELECT * FROM user LIMIT 1
has, err := engine.Where("name = ?", name).Desc("id").Get(&user)
// SELECT * FROM user WHERE name = ? ORDER BY id DESC LIMIT 1
var name string
has, err := engine.Table(&user).Where("id = ?", id).Cols("name").Get(&name)
// SELECT name FROM user WHERE id = ?
var id int64
has, err := engine.Table(&user).Where("name = ?", name).Cols("id").Get(&id)
// SELECT id FROM user WHERE name = ?
var valuesMap = make(map[string]string)
has, err := engine.Table(&user).Where("id = ?", id).Get(&valuesMap)
// SELECT * FROM user WHERE id = ?
var valuesSlice = make([]interface{}, len(cols))
has, err := engine.Table(&user).Where("id = ?", id).Cols(cols...).Get(&valuesSlice)
// SELECT col1, col2, col3 FROM user WHERE id = ?
  • 检测记录是否存在
has, err := testEngine.Exist(new(RecordExist))
// SELECT * FROM record_exist LIMIT 1
has, err = testEngine.Exist(&RecordExist{
		Name: "test1",
	})
// SELECT * FROM record_exist WHERE name = ? LIMIT 1
has, err = testEngine.Where("name = ?", "test1").Exist(&RecordExist{})
// SELECT * FROM record_exist WHERE name = ? LIMIT 1
has, err = testEngine.SQL("select * from record_exist where name = ?", "test1").Exist()
// select * from record_exist where name = ?
has, err = testEngine.Table("record_exist").Exist()
// SELECT * FROM record_exist LIMIT 1
has, err = testEngine.Table("record_exist").Where("name = ?", "test1").Exist()
// SELECT * FROM record_exist WHERE name = ? LIMIT 1
  • ORM方式查询多条记录，当然可以使用Join和extends来组合使用
var users []User
err := engine.Where("name = ?", name).And("age > 10").Limit(10, 0).Find(&users)
// SELECT * FROM user WHERE name = ? AND age > 10 limit 0 offset 10

type Detail struct {
    Id int64
    UserId int64 `xorm:"index"`
}

type UserDetail struct {
    User `xorm:"extends"`
    Detail `xorm:"extends"`
}

var users []UserDetail
err := engine.Table("user").Select("user.*, detail.*")
    Join("INNER", "detail", "detail.user_id = user.id").
    Where("user.name = ?", name).Limit(10, 0).
    Find(&users)
// SELECT user.*, detail.* FROM user INNER JOIN detail WHERE user.name = ? limit 0 offset 10
  • 子查询
var student []Student
err = db.Table("student").Select("id ,name").Where("id in (?)", db.Table("studentinfo").Select("id").Where("status = ?", 2).QueryExpr()).Find(&student)
//SELECT id ,name FROM `student` WHERE (id in (SELECT id FROM `studentinfo` WHERE (status = 2)))
  • 根据条件遍历数据库，可以有两种方式: Iterate and Rows
err := engine.Iterate(&User{Name:name}, func(idx int, bean interface{}) error {
    user := bean.(*User)
    return nil
})
// SELECT * FROM user

rows, err := engine.Rows(&User{Name:name})
// SELECT * FROM user
defer rows.Close()
bean := new(Struct)
for rows.Next() {
    err = rows.Scan(bean)
}
  • ORM方式更新数据，除非使用Cols,AllCols函数指明，默认只更新非空和非0的字段
affected, err := engine.Id(1).Update(&user)
// UPDATE user SET ... Where id = ?

affected, err := engine.Update(&user, &User{Name:name})
// UPDATE user SET ... Where name = ?

var ids = []int64{1, 2, 3}
affected, err := engine.In(ids).Update(&user)
// UPDATE user SET ... Where id IN (?, ?, ?)

// force update indicated columns by Cols
affected, err := engine.Id(1).Cols("age").Update(&User{Name:name, Age: 12})
// UPDATE user SET age = ?, updated=? Where id = ?

// force NOT update indicated columns by Omit
affected, err := engine.Id(1).Omit("name").Update(&User{Name:name, Age: 12})
// UPDATE user SET age = ?, updated=? Where id = ?

affected, err := engine.Id(1).AllCols().Update(&user)
// UPDATE user SET name=?,age=?,salt=?,passwd=?,updated=? Where id = ?
  • ORM方式删除记录，需要注意，删除必须至少有一个条件，否则会报错。要清空数据库可以用EmptyTable
affected, err := engine.Where(...).Delete(&user)
// DELETE FROM user Where ...
  • ORM方式获取记录条数
counts, err := engine.Count(&user)
// SELECT count(*) AS total FROM user
  • FindAndCount combines function Find with Count which is usually used in query by page
var users []User
counts, err := engine.FindAndCount(&users)
  • 条件编辑器
err := engine.Where(builder.NotIn("a", 1, 2).And(builder.In("b", "c", "d", "e"))).Find(&users)
// SELECT id, name ... FROM user WHERE a NOT IN (?, ?) AND b IN (?, ?, ?)
  • Dump数据库结构和数据 DumpAll方法接收一个io.Writer接口来保存Dump出的数据库结构和数据的SQL语句，这个方法导出的SQL语句并不能通用。只针对当前engine所对应的数据库支持的SQL。
//如果需要在程序中Dump数据库的结构和数据可以使用下面2个方法
engine.DumpAll(w io.Writer)

engine.DumpAllFile(fpath string)
  • Import 执行数据库SQL脚本 同样，这里需要对应的数据库的SQL语法支持。
//如果你需要将保存在文件或者其它存储设施中的SQL脚本执行，那么可以使用下面2个方法
engine.Import(r io.Reader)

engine.ImportFile(fpath string)

部分测试用例

测试用例，测试结果

讨论

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Documentation

Overview

Copyright 2018 The Xorm Authors. All rights reserved. Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.

Index

Constants

View Source 
const (
	RSA_PUBKEY_ENCRYPT_MODE = iota //公钥加密
	RSA_PUBKEY_DECRYPT_MODE        //公钥解密
	RSA_PRIKEY_ENCRYPT_MODE        //私钥加密
	RSA_PRIKEY_DECRYPT_MODE        //私钥解密
)
View Source 
const (
	PROPAGATION_REQUIRED      = 0 //Support a current transaction; create a new one if none exists.
	PROPAGATION_SUPPORTS      = 1 //Support a current transaction; execute non-transactionally if none exists.
	PROPAGATION_MANDATORY     = 2 //Support a current transaction; return an error if no current transaction exists.
	PROPAGATION_REQUIRES_NEW  = 3 //Create a new transaction, suspending the current transaction if one exists.
	PROPAGATION_NOT_SUPPORTED = 4 //Do not support a current transaction; rather always execute non-transactionally.
	PROPAGATION_NEVER         = 5 //Do not support a current transaction; return an error if a current transaction exists.
	PROPAGATION_NESTED        = 6 //Execute within a nested transaction if a current transaction exists, behave like PROPAGATION_REQUIRED else.
	PROPAGATION_NOT_REQUIRED  = 7
)
View Source 
const (
	MSSQL_DRIVER      string = "mssql"
	MSSQL_ODBC_DRIVER string = "odbc"
	MYSQL_DRIVER      string = "mysql"
	MYMYSQL_DRIVER    string = "mymysql"
	POSTGRESQL_DRIVER string = "postgres"
	OCI8_DRIVER       string = "oci8"
	GORACLE_DRIVER    string = "godror"
	SQLITE3_DRIVER    string = "sqlite3"
	KINGBASE          string = "kingbase"
)
View Source 
const (
	// Version show the xorm's version
	Version string = "1.0.5.0912"
)

Variables

View Source 
var (
	ErrDataToLarge     = errors.New("message too long for RSA public key size")
	ErrDataLen         = errors.New("data length error")
	ErrDataBroken      = errors.New("data broken, first byte is not zero")
	ErrKeyPairDismatch = errors.New("data is not encrypted by the private key")
	ErrDecryption      = errors.New("decryption error")
	ErrPublicKey       = errors.New("get public key error")
	ErrPrivateKey      = errors.New("get private key error")
)
View Source 
var (
	// ErrPtrSliceType represents a type error
	ErrPtrSliceType = errors.New("A point to a slice is needed")
	// ErrParamsType params error
	ErrParamsType   = errors.New("Params type error")
	ErrParamsFormat = errors.New("Params format error")
	// ErrTableNotFound table not found error
	ErrTableNotFound = errors.New("Table not found")
	// ErrUnSupportedType unsupported error
	ErrUnSupportedType = errors.New("Unsupported type error")
	// ErrNotExist record does not exist error
	ErrNotExist              = errors.New("Record does not exist")
	ErrNotInTransaction      = errors.New("Not in transaction.")
	ErrNestedTransaction     = errors.New("Nested transaction error.")
	ErrTransactionDefinition = errors.New("Transaction definition error.")
	// ErrCacheFailed cache failed error
	ErrCacheFailed = errors.New("Cache failed")

	// ErrNeedDeletedCond delete needs less one condition error
	ErrNeedDeletedCond = errors.New("Delete action needs at least one condition")
	// ErrNotImplemented not implemented
	ErrNotImplemented = errors.New("Not implemented")

	// ErrConditionType condition type unsupported
	ErrConditionType = errors.New("Unsupported condition type")
	// ErrNeedMoreArguments need more arguments
	ErrNeedMoreArguments = errors.New("Need more sql arguments")
	// ErrUnSupportedSQLType parameter of SQL is not supported
	ErrUnSupportedSQLType = errors.New("Unsupported sql type")
)
View Source 
var ErrNoElementsOnSlice = errors.New("No element on slice when insert")

ErrNoElementsOnSlice represents an error there is no element when insert

Functions

func Bool 

func Bool(i interface{}) bool

false: "", 0, false, off

func Bytes 

func Bytes(i interface{}) []byte

func ConvertToBoundSQL 

func ConvertToBoundSQL(sql string, args []interface{}) (string, error)

ConvertToBoundSQL will convert SQL and args to a bound SQL

func DecodeToString 

func DecodeToString(b []byte) string

func Encode 

func Encode(vs ...interface{}) []byte

func EncodeBool 

func EncodeBool(b bool) []byte

func EncodeFloat32 

func EncodeFloat32(f float32) []byte

func EncodeFloat64 

func EncodeFloat64(f float64) []byte

func EncodeInt 

func EncodeInt(i int) []byte

func EncodeInt16 

func EncodeInt16(i int16) []byte

func EncodeInt32 

func EncodeInt32(i int32) []byte

func EncodeInt64 

func EncodeInt64(i int64) []byte

func EncodeInt8 

func EncodeInt8(i int8) []byte

func EncodeString 

func EncodeString(s string) []byte

func EncodeUint 

func EncodeUint(i uint) []byte

func EncodeUint16 

func EncodeUint16(i uint16) []byte

func EncodeUint32 

func EncodeUint32(i uint32) []byte

func EncodeUint64 

func EncodeUint64(i uint64) []byte

func EncodeUint8 

func EncodeUint8(i uint8) []byte

func Float32 

func Float32(i interface{}) float32

func Float64 

func Float64(i interface{}) float64

func Int 

func Int(i interface{}) int

func Int16 

func Int16(i interface{}) int16

func Int32 

func Int32(i interface{}) int32

func Int64 

func Int64(i interface{}) int64

func Int8 

func Int8(i interface{}) int8

func IsNumeric 

func IsNumeric(s string) bool

func JSONString 

func JSONString(v interface{}, IndentJSON bool) (string, error)

func NewDataset 

func NewDataset(headers []string) *tablib.Dataset

NewDataset creates a new Dataset.

func NewDatasetWithData 

func NewDatasetWithData(headers []string, data interface{}, mustMatch bool) (*tablib.Dataset, error)

NewDatasetWithData creates a new Dataset.

func NewMemoryContextCache 

func NewMemoryContextCache() memoryContextCache

NewMemoryContextCache return memoryContextCache

func PKCS5Padding 

func PKCS5Padding(ciphertext []byte, blockSize int) []byte

func PKCS5UnPadding 

func PKCS5UnPadding(origData []byte) []byte

func StrToTime 

func StrToTime(str string, format string, TZLocation ...*time.Location) (time.Time, error)

func String 

func String(i interface{}) string

func Strings 

func Strings(i interface{}) []string

func Time 

func Time(i interface{}, format string, TZLocation ...*time.Location) time.Time

func TimeDuration 

func TimeDuration(i interface{}) time.Duration

func Uint 

func Uint(i interface{}) uint

func Uint16 

func Uint16(i interface{}) uint16

func Uint32 

func Uint32(i interface{}) uint32

func Uint64 

func Uint64(i interface{}) uint64

func Uint8 

func Uint8(i interface{}) uint8

func ZeroPadding 

func ZeroPadding(ciphertext []byte, blockSize int) []byte

func ZeroUnPadding 

func ZeroUnPadding(origData []byte) []byte

Types

type AesEncrypt 

type AesEncrypt struct {
	PubKey string
}

func (*AesEncrypt) Decrypt 

func (this *AesEncrypt) Decrypt(src []byte) (decrypted []byte, err error)

解密字符串

func (*AesEncrypt) Encrypt 

func (this *AesEncrypt) Encrypt(strMesg string) ([]byte, error)

加密字符串

type AfterDeleteProcessor 

type AfterDeleteProcessor interface {
	AfterDelete()
}

AfterDeleteProcessor executed after an object has been deleted

type AfterInsertProcessor 

type AfterInsertProcessor interface {
	AfterInsert()
}

AfterInsertProcessor executed after an object is persisted to the database

type AfterLoadProcessor 

type AfterLoadProcessor interface {
	AfterLoad()
}

AfterLoadProcessor executed after an ojbect has been loaded from database

type AfterLoadSessionProcessor 

type AfterLoadSessionProcessor interface {
	AfterLoad(*Session)
}

AfterLoadSessionProcessor executed after an ojbect has been loaded from database with session parameter

type AfterSetProcessor 

type AfterSetProcessor interface {
	AfterSet(string, Cell)
}

AfterSetProcessor executed after data set to the struct fields

type AfterUpdateProcessor 

type AfterUpdateProcessor interface {
	AfterUpdate()
}

AfterUpdateProcessor executed after an object has been updated

type BeforeDeleteProcessor 

type BeforeDeleteProcessor interface {
	BeforeDelete()
}

BeforeDeleteProcessor executed before an object is deleted

type BeforeInsertProcessor 

type BeforeInsertProcessor interface {
	BeforeInsert()
}

BeforeInsertProcessor executed before an object is initially persisted to the database

type BeforeSetProcessor 

type BeforeSetProcessor interface {
	BeforeSet(string, Cell)
}

BeforeSetProcessor executed before data set to the struct fields

type BeforeUpdateProcessor 

type BeforeUpdateProcessor interface {
	BeforeUpdate()
}

BeforeUpdateProcessor executed before an object is updated

type Cell 

type Cell *interface{}

Cell cell is a result of one column field

type Cipher 

type Cipher interface {
	Encrypt(strMsg string) ([]byte, error)
	Decrypt(src []byte) (decrypted []byte, err error)
}

type ContextCache 

type ContextCache interface {
	// Put puts value into cache with key.
	Put(key string, val interface{})
	// Get gets cached value by given key.
	Get(key string) interface{}
}

ContextCache is the interface that operates the cache data.

type Databook 

type Databook struct {
	XDatabook *tablib.Databook
}

func NewDatabook 

func NewDatabook() *Databook

func NewDatabookWithData 

func NewDatabookWithData(sheetName map[string]string, data interface{}, mustMatch bool, headers ...map[string][]string) (*Databook, error)

func (*Databook) AddSheet 

func (databook *Databook) AddSheet(title string, data interface{}, mustMatch bool, headers ...[]string) error

func (*Databook) HTML 

func (databook *Databook) HTML() *tablib.Exportable

func (*Databook) JSON 

func (databook *Databook) JSON() (*tablib.Exportable, error)

func (*Databook) SaveAsHTML 

func (databook *Databook) SaveAsHTML(filename string, perm os.FileMode) error

func (*Databook) SaveAsJSON 

func (databook *Databook) SaveAsJSON(filename string, perm os.FileMode) error

func (*Databook) SaveAsXLSX 

func (databook *Databook) SaveAsXLSX(filename string, perm os.FileMode) error

func (*Databook) SaveAsXML 

func (databook *Databook) SaveAsXML(filename string, perm os.FileMode) error

func (*Databook) SaveAsYAML 

func (databook *Databook) SaveAsYAML(filename string, perm os.FileMode) error

func (*Databook) Sheet 

func (databook *Databook) Sheet(title string) tablib.Sheet

func (*Databook) Sheets 

func (databook *Databook) Sheets() map[string]tablib.Sheet

func (*Databook) Size 

func (databook *Databook) Size() int

func (*Databook) Wipe 

func (databook *Databook) Wipe()

func (*Databook) XLSX 

func (databook *Databook) XLSX() (*tablib.Exportable, error)

func (*Databook) XML 

func (databook *Databook) XML() (*tablib.Exportable, error)

func (*Databook) YAML 

func (databook *Databook) YAML() (*tablib.Exportable, error)

type DesEncrypt 

type DesEncrypt struct {
	PubKey string
}

func (*DesEncrypt) Decrypt 

func (this *DesEncrypt) Decrypt(crypted []byte) (decrypted []byte, err error)

func (*DesEncrypt) Encrypt 

func (this *DesEncrypt) Encrypt(strMesg string) ([]byte, error)

type Engine 

type Engine struct {
	SqlMap      SqlMap
	SqlTemplate SqlTemplate

	TZLocation *time.Location // The timezone of the application
	DatabaseTZ *time.Location // The timezone of the database
	// contains filtered or unexported fields
}

Engine is the major struct of xorm, it means a database manager. Commonly, an application only need one engine

func NewDB 

func NewDB(driverName string, dataSourceName string) (*Engine, error)

func NewEngine 

func NewEngine(driverName string, dataSourceName string) (*Engine, error)

NewEngine new a db manager according to the parameter. Currently support four drivers

func NewEngineWithDialectAndDB 

func NewEngineWithDialectAndDB(driverName, dataSourceName string, dialect dialects.Dialect, db *core.DB) (*Engine, error)

NewEngineWithDialectAndDB new a db manager according to the parameter. If you do not want to use your own dialect or db, please use NewEngine. For creating dialect, you can call dialects.OpenDialect. And, for creating db, you can call core.Open or core.FromDB.

func NewEngineWithParams 

func NewEngineWithParams(driverName string, dataSourceName string, params map[string]string) (*Engine, error)

NewEngineWithParams new a db manager with params. The params will be passed to dialects.

func NewKB 

func NewKB(driverName string, dataSourceName string) (*Engine, error)

func NewMSSQL 

func NewMSSQL(driverName string, dataSourceName string) (*Engine, error)

func NewMySQL 

func NewMySQL(driverName string, dataSourceName string) (*Engine, error)

func NewOracle 

func NewOracle(driverName string, dataSourceName string) (*Engine, error)

func NewPostgreSQL 

func NewPostgreSQL(dataSourceName string) (*Engine, error)

func NewSqlite3 

func NewSqlite3(dataSourceName string) (*Engine, error)

func (*Engine) AddHook 

func (engine *Engine) AddHook(hook contexts.Hook)

func (*Engine) AddSql 

func (engine *Engine) AddSql(key string, sql string)

func (*Engine) AddSqlTemplate 

func (engine *Engine) AddSqlTemplate(key string, sqlTemplateStr string) error

func (*Engine) After 

func (engine *Engine) After(closures func(interface{})) *Session

After apply after insert Processor, affected bean is passed to closure arg

func (*Engine) Alias 

func (engine *Engine) Alias(alias string) *Session

Alias set the table alias

func (*Engine) AllCols 

func (engine *Engine) AllCols() *Session

AllCols indicates that all columns should be use

func (*Engine) Asc 

func (engine *Engine) Asc(colNames ...string) *Session

Asc will generate "ORDER BY column1,column2 Asc" This method can chainable use. 

engine.Desc("name").Asc("age").Find(&users)
// SELECT * FROM user ORDER BY name DESC, age ASC

func (*Engine) AutoIncrStr 

func (engine *Engine) AutoIncrStr() string

AutoIncrStr Database's autoincrement statement

func (*Engine) BatchAddSql 

func (engine *Engine) BatchAddSql(sqlStrMap map[string]string)

func (*Engine) BatchAddSqlTemplate 

func (engine *Engine) BatchAddSqlTemplate(key string, sqlTemplateStrMap map[string]string) error

func (*Engine) BatchLoadSqlMap 

func (engine *Engine) BatchLoadSqlMap(filepathSlice []string) error

func (*Engine) BatchLoadSqlTemplate 

func (engine *Engine) BatchLoadSqlTemplate(filepathSlice []string) error

func (*Engine) BatchReloadSqlMap 

func (engine *Engine) BatchReloadSqlMap(filepathSlice []string) error

func (*Engine) BatchReloadSqlTemplate 

func (engine *Engine) BatchReloadSqlTemplate(filepathSlice []string) error

func (*Engine) BatchRemoveSql 

func (engine *Engine) BatchRemoveSql(key []string)

func (*Engine) BatchRemoveSqlTemplate 

func (engine *Engine) BatchRemoveSqlTemplate(key []string)

func (*Engine) BatchUpdateSql 

func (engine *Engine) BatchUpdateSql(sqlStrMap map[string]string)

func (*Engine) BatchUpdateSqlTemplate 

func (engine *Engine) BatchUpdateSqlTemplate(key string, sqlTemplateStrMap map[string]string) error

func (*Engine) Before 

func (engine *Engine) Before(closures func(interface{})) *Session

Before apply before Processor, affected bean is passed to closure arg

func (*Engine) BufferSize 

func (engine *Engine) BufferSize(size int) *Session

BufferSize sets buffer size for iterate

func (*Engine) Cascade 

func (engine *Engine) Cascade(trueOrFalse ...bool) *Session

Cascade use cascade or not

func (*Engine) Charset 

func (engine *Engine) Charset(charset string) *Session

Charset set charset when create table, only support mysql now

func (*Engine) ClearCache 

func (engine *Engine) ClearCache(beans ...interface{}) error

ClearCache if enabled cache, clear some tables' cache

func (*Engine) ClearCacheBean 

func (engine *Engine) ClearCacheBean(bean interface{}, id string) error

ClearCacheBean if enabled cache, clear the cache bean

func (*Engine) ClearSqlMapCipher 

func (engine *Engine) ClearSqlMapCipher()

func (*Engine) Clone 

func (engine *Engine) Clone() (*Engine, error)

Clone clone an engine

func (*Engine) Close 

func (engine *Engine) Close() error

Close the engine

func (*Engine) Cols 

func (engine *Engine) Cols(columns ...string) *Session

Cols only use the parameters as select or update columns

func (*Engine) Context 

func (engine *Engine) Context(ctx context.Context) *Session

ContextHook creates a session with the context

func (*Engine) Count 

func (engine *Engine) Count(bean ...interface{}) (int64, error)

Count counts the records. bean's non-empty fields are conditions.

func (*Engine) CreateIndexes 

func (engine *Engine) CreateIndexes(bean interface{}) error

CreateIndexes create indexes

func (*Engine) CreateTables 

func (engine *Engine) CreateTables(beans ...interface{}) error

CreateTables create tabls according bean

func (*Engine) CreateUniques 

func (engine *Engine) CreateUniques(bean interface{}) error

CreateUniques create uniques

func (*Engine) DB 

func (engine *Engine) DB() *core.DB

DB return the wrapper of sql.DB

func (*Engine) DBMetas 

func (engine *Engine) DBMetas() ([]*schemas.Table, error)

DBMetas Retrieve all tables, columns, indexes' informations from database.

func (*Engine) DataSourceName 

func (engine *Engine) DataSourceName() string

DataSourceName return the current connection string

func (*Engine) Decr 

func (engine *Engine) Decr(column string, args ...interface{}) *Session

Decr provides a update string like "column = column - ?"

func (*Engine) Delete 

func (engine *Engine) Delete(bean interface{}) (int64, error)

Delete records, bean's non-empty fields are conditions

func (*Engine) Desc 

func (engine *Engine) Desc(colNames ...string) *Session

Desc will generate "ORDER BY column1 DESC, column2 DESC"

func (*Engine) Dialect 

func (engine *Engine) Dialect() dialects.Dialect

Dialect return database dialect

func (*Engine) Distinct 

func (engine *Engine) Distinct(columns ...string) *Session

Distinct use for distinct columns. Caution: when you are using cache, distinct will not be cached because cache system need id, but distinct will not provide id

func (*Engine) DriverName 

func (engine *Engine) DriverName() string

DriverName return the current sql driver's name

func (*Engine) DropIndexes 

func (engine *Engine) DropIndexes(bean interface{}) error

DropIndexes drop indexes of a table

func (*Engine) DropTables 

func (engine *Engine) DropTables(beans ...interface{}) error

DropTables drop specify tables

func (*Engine) DumpAll 

func (engine *Engine) DumpAll(w io.Writer, tp ...schemas.DBType) error

DumpAll dump database all table structs and data to w

func (*Engine) DumpAllToFile 

func (engine *Engine) DumpAllToFile(fp string, tp ...schemas.DBType) error

DumpAllToFile dump database all table structs and data to a file

func (*Engine) DumpTables 

func (engine *Engine) DumpTables(tables []*schemas.Table, w io.Writer, tp ...schemas.DBType) error

DumpTables dump specify tables to io.Writer

func (*Engine) DumpTablesToFile 

func (engine *Engine) DumpTablesToFile(tables []*schemas.Table, fp string, tp ...schemas.DBType) error

DumpTablesToFile dump specified tables to SQL file.

func (*Engine) EnableSessionID 

func (engine *Engine) EnableSessionID(enable bool)

EnableSessionID if enable session id

func (*Engine) Exec 

func (engine *Engine) Exec(sqlOrArgs ...interface{}) (sql.Result, error)

Exec raw sql

func (*Engine) Exist 

func (engine *Engine) Exist(bean ...interface{}) (bool, error)

Exist returns true if the record exist otherwise return false

func (*Engine) Find 

func (engine *Engine) Find(beans interface{}, condiBeans ...interface{}) error

Find retrieve records from table, condiBeans's non-empty fields are conditions. beans could be []Struct, []*Struct, map[int64]Struct map[int64]*Struct

func (*Engine) FindAndCount 

func (engine *Engine) FindAndCount(rowsSlicePtr interface{}, condiBean ...interface{}) (int64, error)

FindAndCount find the results and also return the counts

func (*Engine) Get 

func (engine *Engine) Get(bean interface{}) (bool, error)

Get retrieve one record from table, bean's non-empty fields are conditions

func (*Engine) GetCacher 

func (engine *Engine) GetCacher(tableName string) caches.Cacher

GetCacher returns the cachher of the special table

func (*Engine) GetColumnMapper 

func (engine *Engine) GetColumnMapper() names.Mapper

GetColumnMapper returns the column name mapper

func (*Engine) GetDefaultCacher 

func (engine *Engine) GetDefaultCacher() caches.Cacher

GetDefaultCacher returns the default cacher

func (*Engine) GetFirst 

func (engine *Engine) GetFirst(bean interface{}) *ResultBean

Get retrieve one record from table, bean's non-empty fields are conditions

func (*Engine) GetSql 

func (engine *Engine) GetSql(key string) string

func (*Engine) GetSqlMap 

func (engine *Engine) GetSqlMap(keys ...interface{}) map[string]string

func (*Engine) GetTZDatabase 

func (engine *Engine) GetTZDatabase() *time.Location

GetTZDatabase returns time zone of the database

func (*Engine) GetTZLocation 

func (engine *Engine) GetTZLocation() *time.Location

GetTZLocation returns time zone of the application

func (*Engine) GetTableMapper 

func (engine *Engine) GetTableMapper() names.Mapper

GetTableMapper returns the table name mapper

func (*Engine) GroupBy 

func (engine *Engine) GroupBy(keys string) *Session

GroupBy generate group by statement

func (*Engine) Having 

func (engine *Engine) Having(conditions string) *Session

Having generate having statement

func (*Engine) ID 

func (engine *Engine) ID(id interface{}) *Session

ID method provoide a condition as (id) = ?

func (*Engine) Import 

func (engine *Engine) Import(r io.Reader) ([]sql.Result, error)

Import SQL DDL from io.Reader

func (*Engine) ImportFile 

func (engine *Engine) ImportFile(ddlPath string) ([]sql.Result, error)

ImportFile SQL DDL file

func (*Engine) In 

func (engine *Engine) In(column string, args ...interface{}) *Session

In will generate "column IN (?, ?)"

func (*Engine) Incr 

func (engine *Engine) Incr(column string, args ...interface{}) *Session

Incr provides a update string like "column = column + ?"

func (*Engine) Insert 

func (engine *Engine) Insert(beans ...interface{}) (int64, error)

Insert one or more records

func (*Engine) InsertOne 

func (engine *Engine) InsertOne(bean interface{}) (int64, error)

InsertOne insert only one record

func (*Engine) IsTableEmpty 

func (engine *Engine) IsTableEmpty(bean interface{}) (bool, error)

IsTableEmpty if a table has any reocrd

func (*Engine) IsTableExist 

func (engine *Engine) IsTableExist(beanOrTableName interface{}) (bool, error)

IsTableExist if a table is exist

func (*Engine) Iterate 

func (engine *Engine) Iterate(bean interface{}, fun IterFunc) error

Iterate record by record handle records from table, bean's non-empty fields are conditions.

func (*Engine) Join 

func (engine *Engine) Join(joinOperator string, tablename interface{}, condition string, args ...interface{}) *Session

Join the join_operator should be one of INNER, LEFT OUTER, CROSS etc - this will be prepended to JOIN

func (*Engine) Limit 

func (engine *Engine) Limit(limit int, start ...int) *Session

Limit will generate "LIMIT start, limit"

func (*Engine) LoadSqlMap 

func (engine *Engine) LoadSqlMap(filepath string) error

func (*Engine) LoadSqlTemplate 

func (engine *Engine) LoadSqlTemplate(filepath string) error

func (*Engine) Logger 

func (engine *Engine) Logger() log.ContextLogger

Logger return the logger interface

func (*Engine) MapCacher 

func (engine *Engine) MapCacher(bean interface{}, cacher caches.Cacher) error

MapCacher Set a table use a special cacher

func (*Engine) MustCols 

func (engine *Engine) MustCols(columns ...string) *Session

MustCols specify some columns must use even if they are empty

func (*Engine) NewDB 

func (engine *Engine) NewDB() (*core.DB, error)

NewDB provides an interface to operate database directly

func (*Engine) NewSession 

func (engine *Engine) NewSession() *Session

NewSession New a session

func (*Engine) NoAutoCondition 

func (engine *Engine) NoAutoCondition(no ...bool) *Session

NoAutoCondition disable auto generate Where condition from bean or not

func (*Engine) NoAutoTime 

func (engine *Engine) NoAutoTime() *Session

NoAutoTime Default if your struct has "created" or "updated" filed tag, the fields will automatically be filled with current time when Insert or Update invoked. Call NoAutoTime if you dont' want to fill automatically.

func (*Engine) NoCache 

func (engine *Engine) NoCache() *Session

NoCache If you has set default cacher, and you want temporilly stop use cache, you can use NoCache()

func (*Engine) NoCascade 

func (engine *Engine) NoCascade() *Session

NoCascade If you do not want to auto cascade load object

func (*Engine) NotIn 

func (engine *Engine) NotIn(column string, args ...interface{}) *Session

NotIn will generate "column NOT IN (?, ?)"

func (*Engine) Nullable 

func (engine *Engine) Nullable(columns ...string) *Session

Nullable set null when column is zero-value and nullable for update

func (*Engine) Omit 

func (engine *Engine) Omit(columns ...string) *Session

Omit only not use the parameters as select or update columns

func (*Engine) OrderBy 

func (engine *Engine) OrderBy(order string) *Session

OrderBy will generate "ORDER BY order"

func (*Engine) Ping 

func (engine *Engine) Ping() error

Ping tests if database is alive

func (*Engine) PingContext 

func (engine *Engine) PingContext(ctx context.Context) error

PingContext tests if database is alive

func (*Engine) Prepare 

func (engine *Engine) Prepare() *Session

Prepare enables prepare statement

func (*Engine) QueryBytes 

func (engine *Engine) QueryBytes(sqlOrArgs ...interface{}) (resultsSlice []map[string][]byte, err error)

Query a raw sql and return records as []map[string][]byte

func (*Engine) QueryInterface 

func (engine *Engine) QueryInterface(sqlOrArgs ...interface{}) ([]map[string]interface{}, error)

QueryInterface runs a raw sql and return records as []map[string]interface{}

func (*Engine) QueryResult 

func (engine *Engine) QueryResult(sqlOrArgs ...interface{}) (result *ResultValue)

Query a raw sql and return records as Result

func (*Engine) QueryString 

func (engine *Engine) QueryString(sqlOrArgs ...interface{}) ([]map[string]string, error)

QueryString runs a raw sql and return records as []map[string]string

func (*Engine) QueryValue 

func (engine *Engine) QueryValue(sqlOrArgs ...interface{}) (resultsSlice []map[string]Value, err error)

Query a raw sql and return records as []map[string]Value

func (*Engine) Quote 

func (engine *Engine) Quote(value string) string

Quote Use QuoteStr quote the string sql

func (*Engine) QuoteTo 

func (engine *Engine) QuoteTo(buf *strings.Builder, value string)

QuoteTo quotes string and writes into the buffer

func (*Engine) RegisterSqlMap 

func (engine *Engine) RegisterSqlMap(sqlm SqlM, Cipher ...Cipher) error

func (*Engine) RegisterSqlTemplate 

func (engine *Engine) RegisterSqlTemplate(sqlt SqlTemplate, Cipher ...Cipher) error

func (*Engine) ReloadSqlMap 

func (engine *Engine) ReloadSqlMap(filepath string) error

func (*Engine) ReloadSqlTemplate 

func (engine *Engine) ReloadSqlTemplate(filepath string) error

func (*Engine) RemoveSql 

func (engine *Engine) RemoveSql(key string)

func (*Engine) RemoveSqlTemplate 

func (engine *Engine) RemoveSqlTemplate(key string)

func (*Engine) Rows 

func (engine *Engine) Rows(bean interface{}) (*Rows, error)

Rows return sql.Rows compatible Rows obj, as a forward Iterator object for iterating record by record, bean's non-empty fields are conditions.

func (*Engine) SQL 

func (engine *Engine) SQL(query interface{}, args ...interface{}) *Session

SQL method let's you manually write raw SQL and operate For example: 

engine.SQL("select * from user").Find(&users)

This code will execute "select * from user" and set the records to users

func (*Engine) SQLType 

func (engine *Engine) SQLType(c *schemas.Column) string

SQLType A simple wrapper to dialect's core.SqlType method

func (*Engine) Search 

func (engine *Engine) Search(beans interface{}, condiBeans ...interface{}) *ResultStructs

func (*Engine) Select 

func (engine *Engine) Select(str string) *Session

Select customerize your select columns or contents

func (*Engine) SetCacher 

func (engine *Engine) SetCacher(tableName string, cacher caches.Cacher)

SetCacher sets cacher for the table

func (*Engine) SetColumnMapper 

func (engine *Engine) SetColumnMapper(mapper names.Mapper)

SetColumnMapper set the column name mapping rule

func (*Engine) SetConnMaxLifetime 

func (engine *Engine) SetConnMaxLifetime(d time.Duration)

SetConnMaxLifetime sets the maximum amount of time a connection may be reused.

func (*Engine) SetDefaultCacher 

func (engine *Engine) SetDefaultCacher(cacher caches.Cacher)

SetDefaultCacher set the default cacher. Xorm's default not enable cacher.

func (*Engine) SetDefaultContext 

func (engine *Engine) SetDefaultContext(ctx context.Context)

SetDefaultContext set the default context

func (*Engine) SetDisableGlobalCache 

func (engine *Engine) SetDisableGlobalCache(disable bool)

SetDisableGlobalCache disable global cache or not

func (*Engine) SetExpr 

func (engine *Engine) SetExpr(column string, expression interface{}) *Session

SetExpr provides a update string like "column = {expression}"

func (*Engine) SetLogLevel 

func (engine *Engine) SetLogLevel(level log.LogLevel)

SetLogLevel sets the logger level

func (*Engine) SetLogger 

func (engine *Engine) SetLogger(logger interface{})

SetLogger set the new logger

func (*Engine) SetMapper 

func (engine *Engine) SetMapper(mapper names.Mapper)

SetMapper set the name mapping rules

func (*Engine) SetMaxIdleConns 

func (engine *Engine) SetMaxIdleConns(conns int)

SetMaxIdleConns set the max idle connections on pool, default is 2

func (*Engine) SetMaxOpenConns 

func (engine *Engine) SetMaxOpenConns(conns int)

SetMaxOpenConns is only available for go 1.2+

func (*Engine) SetQuotePolicy 

func (engine *Engine) SetQuotePolicy(quotePolicy dialects.QuotePolicy)

SetQuotePolicy sets the special quote policy

func (*Engine) SetSchema 

func (engine *Engine) SetSchema(schema string)

SetSchema sets the schema of database

func (*Engine) SetSqlMapCipher 

func (engine *Engine) SetSqlMapCipher(cipher Cipher)

func (*Engine) SetSqlMapRootDir 

func (engine *Engine) SetSqlMapRootDir(sqlMapRootDir string) *Engine

func (*Engine) SetTZDatabase 

func (engine *Engine) SetTZDatabase(tz *time.Location)

SetTZDatabase sets time zone of the database

func (*Engine) SetTZLocation 

func (engine *Engine) SetTZLocation(tz *time.Location)

SetTZLocation sets time zone of the application

func (*Engine) SetTableMapper 

func (engine *Engine) SetTableMapper(mapper names.Mapper)

SetTableMapper set the table name mapping rule

func (*Engine) ShowSQL 

func (engine *Engine) ShowSQL(show ...bool)

ShowSQL show SQL statement or not on logger if log level is great than INFO

func (*Engine) SqlMapClient 

func (engine *Engine) SqlMapClient(sqlTagName string, args ...interface{}) *Session

func (*Engine) SqlMapsClient 

func (engine *Engine) SqlMapsClient(sqlkeys interface{}, parmas ...interface{}) *SqlMapsExecutor

func (*Engine) SqlTemplateClient 

func (engine *Engine) SqlTemplateClient(sqlTagName string, args ...interface{}) *Session

func (*Engine) SqlTemplatesClient 

func (engine *Engine) SqlTemplatesClient(sqlkeys interface{}, parmas ...interface{}) *SqlTemplatesExecutor

func (*Engine) Sqls 

func (engine *Engine) Sqls(sqls interface{}, parmas ...interface{}) *SqlsExecutor

func (*Engine) StartFSWatcher 

func (engine *Engine) StartFSWatcher() error

start filesystem watcher

func (*Engine) StopFSWatcher 

func (engine *Engine) StopFSWatcher() error

stop filesystem watcher

func (*Engine) StoreEngine 

func (engine *Engine) StoreEngine(storeEngine string) *Session

StoreEngine set store engine when create table, only support mysql now

func (*Engine) Sum 

func (engine *Engine) Sum(bean interface{}, colName string) (float64, error)

Sum sum the records by some column. bean's non-empty fields are conditions.

func (*Engine) SumInt 

func (engine *Engine) SumInt(bean interface{}, colName string) (int64, error)

SumInt sum the records by some column. bean's non-empty fields are conditions.

func (*Engine) Sums 

func (engine *Engine) Sums(bean interface{}, colNames ...string) ([]float64, error)

Sums sum the records by some columns. bean's non-empty fields are conditions.

func (*Engine) SumsInt 

func (engine *Engine) SumsInt(bean interface{}, colNames ...string) ([]int64, error)

SumsInt like Sums but return slice of int64 instead of float64.

func (*Engine) Sync 

func (engine *Engine) Sync(beans ...interface{}) error

Sync the new struct changes to database, this method will automatically add table, column, index, unique. but will not delete or change anything. If you change some field, you should change the database manually.

func (*Engine) Sync2 

func (engine *Engine) Sync2(beans ...interface{}) error

Sync2 synchronize structs to database tables

func (*Engine) Table 

func (engine *Engine) Table(tableNameOrBean interface{}) *Session

Table temporarily change the Get, Find, Update's table

func (*Engine) TableInfo 

func (engine *Engine) TableInfo(bean interface{}) (*schemas.Table, error)

TableInfo get table info according to bean's content

func (*Engine) TableName 

func (engine *Engine) TableName(bean interface{}, includeSchema ...bool) string

TableName returns table name with schema prefix if has

func (*Engine) Transaction 

func (engine *Engine) Transaction(f func(*Session) (interface{}, error)) (interface{}, error)

Transaction Execute sql wrapped in a transaction(abbr as tx), tx will automatic commit if no errors occurred

func (*Engine) UnMapType 

func (engine *Engine) UnMapType(t reflect.Type)

UnMapType remove table from tables cache

func (*Engine) Unscoped 

func (engine *Engine) Unscoped() *Session

Unscoped always disable struct tag "deleted"

func (*Engine) Update 

func (engine *Engine) Update(bean interface{}, condiBeans ...interface{}) (int64, error)

Update records, bean's non-empty fields are updated contents, condiBean' non-empty filds are conditions CAUTION: 

1.bool will defaultly be updated content nor conditions
 You should call UseBool if you have bool to use.
2.float32 & float64 may be not inexact as conditions

func (*Engine) UpdateSql 

func (engine *Engine) UpdateSql(key string, sql string)

func (*Engine) UpdateSqlTemplate 

func (engine *Engine) UpdateSqlTemplate(key string, sqlTemplateStr string) error

func (*Engine) UseBool 

func (engine *Engine) UseBool(columns ...string) *Session

UseBool xorm automatically retrieve condition according struct, but if struct has bool field, it will ignore them. So use UseBool to tell system to do not ignore them. If no parameters, it will use all the bool field of struct, or it will use parameters's columns

func (*Engine) Where 

func (engine *Engine) Where(query interface{}, args ...interface{}) *Session

Where method provide a condition query

type EngineGroup 

type EngineGroup struct {
	*Engine
	// contains filtered or unexported fields
}

EngineGroup defines an engine group

func NewEngineGroup 

func NewEngineGroup(args1 interface{}, args2 interface{}, policies ...GroupPolicy) (*EngineGroup, error)

NewEngineGroup creates a new engine group

func (*EngineGroup) AddHook 

func (eg *EngineGroup) AddHook(hook contexts.Hook)

func (*EngineGroup) Close 

func (eg *EngineGroup) Close() error

Close the engine

func (*EngineGroup) Context 

func (eg *EngineGroup) Context(ctx context.Context) *Session

ContextHook returned a group session

func (*EngineGroup) Main 

func (eg *EngineGroup) Main() *Engine

Main returns the main engine

func (*EngineGroup) NewSession 

func (eg *EngineGroup) NewSession() *Session

NewSession returned a group session

func (*EngineGroup) Ping 

func (eg *EngineGroup) Ping() error

Ping tests if database is alive

func (*EngineGroup) RegisterSqlMap 

func (eg *EngineGroup) RegisterSqlMap(sqlm SqlM, Cipher ...Cipher) error

func (*EngineGroup) RegisterSqlTemplate 

func (eg *EngineGroup) RegisterSqlTemplate(sqlt SqlTemplate, Cipher ...Cipher) error

func (*EngineGroup) SetColumnMapper 

func (eg *EngineGroup) SetColumnMapper(mapper names.Mapper)

SetColumnMapper set the column name mapping rule

func (*EngineGroup) SetConnMaxLifetime 

func (eg *EngineGroup) SetConnMaxLifetime(d time.Duration)

SetConnMaxLifetime sets the maximum amount of time a connection may be reused.

func (*EngineGroup) SetDefaultCacher 

func (eg *EngineGroup) SetDefaultCacher(cacher caches.Cacher)

SetDefaultCacher set the default cacher

func (*EngineGroup) SetLogLevel 

func (eg *EngineGroup) SetLogLevel(level log.LogLevel)

SetLogLevel sets the logger level

func (*EngineGroup) SetLogger 

func (eg *EngineGroup) SetLogger(logger interface{})

SetLogger set the new logger

func (*EngineGroup) SetMapper 

func (eg *EngineGroup) SetMapper(mapper names.Mapper)

SetMapper set the name mapping rules

func (*EngineGroup) SetMaxIdleConns 

func (eg *EngineGroup) SetMaxIdleConns(conns int)

SetMaxIdleConns set the max idle connections on pool, default is 2

func (*EngineGroup) SetMaxOpenConns 

func (eg *EngineGroup) SetMaxOpenConns(conns int)

SetMaxOpenConns is only available for go 1.2+

func (*EngineGroup) SetPolicy 

func (eg *EngineGroup) SetPolicy(policy GroupPolicy) *EngineGroup

SetPolicy set the group policy

func (*EngineGroup) SetQuotePolicy 

func (eg *EngineGroup) SetQuotePolicy(quotePolicy dialects.QuotePolicy)

SetQuotePolicy sets the special quote policy

func (*EngineGroup) SetTableMapper 

func (eg *EngineGroup) SetTableMapper(mapper names.Mapper)

SetTableMapper set the table name mapping rule

func (*EngineGroup) ShowSQL 

func (eg *EngineGroup) ShowSQL(show ...bool)

ShowSQL show SQL statement or not on logger if log level is great than INFO

func (*EngineGroup) Subordinate 

func (eg *EngineGroup) Subordinate() *Engine

Subordinate returns one of the physical databases which is a subordinate according the policy

func (*EngineGroup) Subordinates 

func (eg *EngineGroup) Subordinates() []*Engine

Subordinates returns all the subordinates

type EngineInterface 

type EngineInterface interface {
	Interface

	Before(func(interface{})) *Session
	Charset(charset string) *Session
	ClearCache(...interface{}) error
	Context(context.Context) *Session
	CreateTables(...interface{}) error
	DBMetas() ([]*schemas.Table, error)
	Dialect() dialects.Dialect
	DriverName() string
	DropTables(...interface{}) error
	DumpAllToFile(fp string, tp ...schemas.DBType) error
	GetCacher(string) caches.Cacher
	GetColumnMapper() names.Mapper
	GetDefaultCacher() caches.Cacher
	GetTableMapper() names.Mapper
	GetTZDatabase() *time.Location
	GetTZLocation() *time.Location
	ImportFile(fp string) ([]sql.Result, error)
	MapCacher(interface{}, caches.Cacher) error
	NewSession() *Session
	NoAutoTime() *Session
	Quote(string) string
	SetCacher(string, caches.Cacher)
	SetConnMaxLifetime(time.Duration)
	SetColumnMapper(names.Mapper)
	SetDefaultCacher(caches.Cacher)
	SetLogger(logger interface{})
	SetLogLevel(log.LogLevel)
	SetMapper(names.Mapper)
	SetMaxOpenConns(int)
	SetMaxIdleConns(int)
	SetQuotePolicy(dialects.QuotePolicy)
	SetSchema(string)
	SetTableMapper(names.Mapper)
	SetTZDatabase(tz *time.Location)
	SetTZLocation(tz *time.Location)
	AddHook(hook contexts.Hook)
	ShowSQL(show ...bool)
	Sync(...interface{}) error
	Sync2(...interface{}) error
	StoreEngine(storeEngine string) *Session
	TableInfo(bean interface{}) (*schemas.Table, error)
	TableName(interface{}, ...bool) string
	UnMapType(reflect.Type)
	EnableSessionID(bool)
}

EngineInterface defines the interface which Engine, EngineGroup will implementate.

type ErrFieldIsNotExist 

type ErrFieldIsNotExist struct {
	FieldName string
	TableName string
}

ErrFieldIsNotExist columns does not exist

func (ErrFieldIsNotExist) Error 

func (e ErrFieldIsNotExist) Error() string

type ErrFieldIsNotValid 

type ErrFieldIsNotValid struct {
	FieldName string
	TableName string
}

ErrFieldIsNotValid is not valid

func (ErrFieldIsNotValid) Error 

func (e ErrFieldIsNotValid) Error() string

type FuncMap 

type FuncMap map[string]interface{}

type GroupPolicy 

type GroupPolicy interface {
	Subordinate(*EngineGroup) *Engine
}

GroupPolicy is be used by chosing the current subordinate from subordinates

type GroupPolicyHandler 

type GroupPolicyHandler func(*EngineGroup) *Engine

GroupPolicyHandler should be used when a function is a GroupPolicy

func LeastConnPolicy 

func LeastConnPolicy() GroupPolicyHandler

LeastConnPolicy implements GroupPolicy, every time will get the least connections subordinate

func RandomPolicy 

func RandomPolicy() GroupPolicyHandler

RandomPolicy implmentes randomly chose the subordinate of subordinates

func RoundRobinPolicy 

func RoundRobinPolicy() GroupPolicyHandler

RoundRobinPolicy returns a group policy handler

func WeightRandomPolicy 

func WeightRandomPolicy(weights []int) GroupPolicyHandler

WeightRandomPolicy implmentes randomly chose the subordinate of subordinates

func WeightRoundRobinPolicy 

func WeightRoundRobinPolicy(weights []int) GroupPolicyHandler

WeightRoundRobinPolicy returns a group policy handler

func (GroupPolicyHandler) Subordinate 

func (h GroupPolicyHandler) Subordinate(eg *EngineGroup) *Engine

Subordinate implements the chosen of subordinates

type HTMLTemplate 

type HTMLTemplate struct {
	SqlTemplateRootDir string
	Template           map[string]*template.Template

	Capacity uint
	Cipher   Cipher
	Type     int
	Funcs    map[string]FuncMap
	// contains filtered or unexported fields
}

func Default 

func Default(directory, extension string) *HTMLTemplate

func (*HTMLTemplate) AddSqlTemplate 

func (sqlTemplate *HTMLTemplate) AddSqlTemplate(key string, sqlTemplateStr string) error

func (*HTMLTemplate) BatchAddSqlTemplate 

func (sqlTemplate *HTMLTemplate) BatchAddSqlTemplate(key string, sqlTemplateStrMap map[string]string) error

func (*HTMLTemplate) BatchLoadSqlTemplate 

func (sqlTemplate *HTMLTemplate) BatchLoadSqlTemplate(filepathSlice []string) error

func (*HTMLTemplate) BatchReloadSqlTemplate 

func (sqlTemplate *HTMLTemplate) BatchReloadSqlTemplate(filepathSlice []string) error

func (*HTMLTemplate) BatchRemoveSqlTemplate 

func (sqlTemplate *HTMLTemplate) BatchRemoveSqlTemplate(key []string)

func (*HTMLTemplate) BatchUpdateSqlTemplate 

func (sqlTemplate *HTMLTemplate) BatchUpdateSqlTemplate(key string, sqlTemplateStrMap map[string]string) error

func (*HTMLTemplate) Execute 

func (sqlTemplate *HTMLTemplate) Execute(key string, args ...interface{}) (string, error)

func (*HTMLTemplate) Extension 

func (sqlTemplate *HTMLTemplate) Extension() string

func (*HTMLTemplate) GetSqlTemplate 

func (sqlTemplate *HTMLTemplate) GetSqlTemplate(key string) *template.Template

func (*HTMLTemplate) GetSqlTemplates 

func (sqlTemplate *HTMLTemplate) GetSqlTemplates(keys ...interface{}) map[string]*template.Template

func (*HTMLTemplate) LoadSqlTemplate 

func (sqlTemplate *HTMLTemplate) LoadSqlTemplate(filepath string) error

-------------------------------------------------------------------------------------------------------------

func (*HTMLTemplate) ReadTemplate 

func (sqlTemplate *HTMLTemplate) ReadTemplate(filepath string) ([]byte, error)

func (*HTMLTemplate) ReloadSqlTemplate 

func (sqlTemplate *HTMLTemplate) ReloadSqlTemplate(filepath string) error

func (*HTMLTemplate) RemoveSqlTemplate 

func (sqlTemplate *HTMLTemplate) RemoveSqlTemplate(key string)

func (*HTMLTemplate) RootDir 

func (sqlTemplate *HTMLTemplate) RootDir() string

func (*HTMLTemplate) SetFuncs 

func (sqlTemplate *HTMLTemplate) SetFuncs(key string, funcMap FuncMap)

func (*HTMLTemplate) SetSqlTemplateCipher 

func (sqlTemplate *HTMLTemplate) SetSqlTemplateCipher(cipher Cipher)

func (*HTMLTemplate) UpdateSqlTemplate 

func (sqlTemplate *HTMLTemplate) UpdateSqlTemplate(key string, sqlTemplateStr string) error

func (*HTMLTemplate) WalkFunc 

func (sqlTemplate *HTMLTemplate) WalkFunc(path string, info os.FileInfo, err error) error

type Interface 

type Interface interface {
	AllCols() *Session
	Alias(alias string) *Session
	Asc(colNames ...string) *Session
	BufferSize(size int) *Session
	Cols(columns ...string) *Session
	Count(...interface{}) (int64, error)
	CreateIndexes(bean interface{}) error
	CreateUniques(bean interface{}) error
	Decr(column string, arg ...interface{}) *Session
	Desc(...string) *Session
	Delete(interface{}) (int64, error)
	Distinct(columns ...string) *Session
	DropIndexes(bean interface{}) error
	Exec(sqlOrArgs ...interface{}) (sql.Result, error)
	Exist(bean ...interface{}) (bool, error)
	Find(interface{}, ...interface{}) error
	FindAndCount(interface{}, ...interface{}) (int64, error)
	Get(interface{}) (bool, error)
	GroupBy(keys string) *Session
	ID(interface{}) *Session
	In(string, ...interface{}) *Session
	Incr(column string, arg ...interface{}) *Session
	Insert(...interface{}) (int64, error)
	InsertOne(interface{}) (int64, error)
	IsTableEmpty(bean interface{}) (bool, error)
	IsTableExist(beanOrTableName interface{}) (bool, error)
	Iterate(interface{}, IterFunc) error
	Limit(int, ...int) *Session
	MustCols(columns ...string) *Session
	NoAutoCondition(...bool) *Session
	NotIn(string, ...interface{}) *Session
	Join(joinOperator string, tablename interface{}, condition string, args ...interface{}) *Session
	Omit(columns ...string) *Session
	OrderBy(order string) *Session
	Ping() error
	QueryBytes(sqlOrArgs ...interface{}) (resultsSlice []map[string][]byte, err error)
	QueryInterface(sqlOrArgs ...interface{}) ([]map[string]interface{}, error)
	QueryString(sqlOrArgs ...interface{}) ([]map[string]string, error)
	QueryValue(sqlOrArgs ...interface{}) ([]map[string]Value, error)
	QueryResult(sqlOrArgs ...interface{}) (result *ResultValue)
	Rows(bean interface{}) (*Rows, error)
	SetExpr(string, interface{}) *Session
	Select(string) *Session
	SQL(interface{}, ...interface{}) *Session
	Sum(bean interface{}, colName string) (float64, error)
	SumInt(bean interface{}, colName string) (int64, error)
	Sums(bean interface{}, colNames ...string) ([]float64, error)
	SumsInt(bean interface{}, colNames ...string) ([]int64, error)
	Table(tableNameOrBean interface{}) *Session
	Unscoped() *Session
	Update(bean interface{}, condiBeans ...interface{}) (int64, error)
	UseBool(...string) *Session
	Where(interface{}, ...interface{}) *Session
}

Interface defines the interface which Engine, EngineGroup and Session will implementate.

type IterFunc 

type IterFunc func(idx int, bean interface{}) error

IterFunc only use by Iterate

type JSONInterface 

type JSONInterface interface {
	Marshal(v interface{}) ([]byte, error)
	Unmarshal(data []byte, v interface{}) error
}

JSONInterface represents an interface to handle json data 

var (
	// DefaultJSONHandler default json handler
	DefaultJSONHandler JSONInterface = StdJSON{}
)

type JetTemplate 

type JetTemplate struct {
	SqlTemplateRootDir string
	Template           map[string]*jet.Template

	Capacity uint
	Cipher   Cipher
	Funcs    map[string]FuncMap
	// contains filtered or unexported fields
}

func Jet 

func Jet(directory, extension string) *JetTemplate

func (*JetTemplate) AddSqlTemplate 

func (sqlTemplate *JetTemplate) AddSqlTemplate(key string, sqlTemplateStr string) error

func (*JetTemplate) BatchAddSqlTemplate 

func (sqlTemplate *JetTemplate) BatchAddSqlTemplate(key string, sqlTemplateStrMap map[string]string) error

func (*JetTemplate) BatchLoadSqlTemplate 

func (sqlTemplate *JetTemplate) BatchLoadSqlTemplate(filepathSlice []string) error

func (*JetTemplate) BatchReloadSqlTemplate 

func (sqlTemplate *JetTemplate) BatchReloadSqlTemplate(filepathSlice []string) error

func (*JetTemplate) BatchRemoveSqlTemplate 

func (sqlTemplate *JetTemplate) BatchRemoveSqlTemplate(key []string)

func (*JetTemplate) BatchUpdateSqlTemplate 

func (sqlTemplate *JetTemplate) BatchUpdateSqlTemplate(key string, sqlTemplateStrMap map[string]string) error

func (*JetTemplate) Execute 

func (sqlTemplate *JetTemplate) Execute(key string, args ...interface{}) (string, error)

func (*JetTemplate) Extension 

func (sqlTemplate *JetTemplate) Extension() string

func (*JetTemplate) GetSqlTemplate 

func (sqlTemplate *JetTemplate) GetSqlTemplate(key string) *jet.Template

func (*JetTemplate) GetSqlTemplates 

func (sqlTemplate *JetTemplate) GetSqlTemplates(keys ...interface{}) map[string]*jet.Template

func (*JetTemplate) LoadSqlTemplate 

func (sqlTemplate *JetTemplate) LoadSqlTemplate(filepath string) error

-------------------------------------------------------------------------------------------------------------

func (*JetTemplate) ReadTemplate 

func (sqlTemplate *JetTemplate) ReadTemplate(filepath string) ([]byte, error)

func (*JetTemplate) ReloadSqlTemplate 

func (sqlTemplate *JetTemplate) ReloadSqlTemplate(filepath string) error

func (*JetTemplate) RemoveSqlTemplate 

func (sqlTemplate *JetTemplate) RemoveSqlTemplate(key string)

func (*JetTemplate) RootDir 

func (sqlTemplate *JetTemplate) RootDir() string

func (*JetTemplate) SetFuncs 

func (sqlTemplate *JetTemplate) SetFuncs(key string, funcMap FuncMap)

func (*JetTemplate) SetSqlTemplateCipher 

func (sqlTemplate *JetTemplate) SetSqlTemplateCipher(cipher Cipher)

func (*JetTemplate) UpdateSqlTemplate 

func (sqlTemplate *JetTemplate) UpdateSqlTemplate(key string, sqlTemplateStr string) error

func (*JetTemplate) WalkFunc 

func (sqlTemplate *JetTemplate) WalkFunc(path string, info os.FileInfo, err error) error

type JsonSqlMap 

type JsonSqlMap struct {
	// contains filtered or unexported fields
}

func Json 

func Json(directory, extension string) *JsonSqlMap

func (*JsonSqlMap) Extension 

func (sqlMap *JsonSqlMap) Extension() string

func (*JsonSqlMap) RootDir 

func (sqlMap *JsonSqlMap) RootDir() string

type NullBool 

type NullBool struct {
	Bool  bool
	Valid bool
}

func (NullBool) IsNil 

func (nb NullBool) IsNil() bool

func (NullBool) MarshalJSON 

func (nb NullBool) MarshalJSON() ([]byte, error)

func (NullBool) MarshalText 

func (nb NullBool) MarshalText() ([]byte, error)

func (NullBool) Ptr 

func (nb NullBool) Ptr() *bool

func (*NullBool) UnmarshalJSON 

func (nb *NullBool) UnmarshalJSON(data []byte) error

func (*NullBool) UnmarshalText 

func (nb *NullBool) UnmarshalText(text []byte) error

func (NullBool) ValueOrZero 

func (nb NullBool) ValueOrZero() bool

type NullFloat32 

type NullFloat32 struct {
	Float32 float32
	Valid   bool
}

func (NullFloat32) IsNil 

func (nf NullFloat32) IsNil() bool

func (NullFloat32) MarshalJSON 

func (nf NullFloat32) MarshalJSON() ([]byte, error)

func (NullFloat32) MarshalText 

func (nf NullFloat32) MarshalText() ([]byte, error)

func (NullFloat32) Ptr 

func (nf NullFloat32) Ptr() *float32

func (*NullFloat32) UnmarshalJSON 

func (nf *NullFloat32) UnmarshalJSON(data []byte) error

func (*NullFloat32) UnmarshalText 

func (nf *NullFloat32) UnmarshalText(text []byte) error

func (NullFloat32) ValueOrZero 

func (nf NullFloat32) ValueOrZero() float32

type NullFloat64 

type NullFloat64 struct {
	Float64 float64
	Valid   bool
}

func (NullFloat64) IsNil 

func (nf NullFloat64) IsNil() bool

func (NullFloat64) MarshalJSON 

func (nf NullFloat64) MarshalJSON() ([]byte, error)

func (NullFloat64) MarshalText 

func (nf NullFloat64) MarshalText() ([]byte, error)

func (NullFloat64) Ptr 

func (nf NullFloat64) Ptr() *float64

func (*NullFloat64) UnmarshalJSON 

func (nf *NullFloat64) UnmarshalJSON(data []byte) error

func (*NullFloat64) UnmarshalText 

func (nf *NullFloat64) UnmarshalText(text []byte) error

func (NullFloat64) ValueOrZero 

func (nf NullFloat64) ValueOrZero() float64

type NullInt 

type NullInt struct {
	Int   int
	Valid bool
}

func (NullInt) IsNil 

func (ni NullInt) IsNil() bool

func (NullInt) MarshalJSON 

func (ni NullInt) MarshalJSON() ([]byte, error)

func (NullInt) MarshalText 

func (ni NullInt) MarshalText() ([]byte, error)

func (NullInt) Ptr 

func (ni NullInt) Ptr() *int

func (*NullInt) UnmarshalJSON 

func (ni *NullInt) UnmarshalJSON(data []byte) error

func (*NullInt) UnmarshalText 

func (ni *NullInt) UnmarshalText(text []byte) error

func (NullInt) ValueOrZero 

func (ni NullInt) ValueOrZero() int

type NullInt16 

type NullInt16 struct {
	Int16 int16
	Valid bool
}

func (NullInt16) IsNil 

func (ni NullInt16) IsNil() bool

func (NullInt16) MarshalJSON 

func (ni NullInt16) MarshalJSON() ([]byte, error)

func (NullInt16) MarshalText 

func (ni NullInt16) MarshalText() ([]byte, error)

func (NullInt16) Ptr 

func (ni NullInt16) Ptr() *int16

func (*NullInt16) UnmarshalJSON 

func (ni *NullInt16) UnmarshalJSON(data []byte) error

func (*NullInt16) UnmarshalText 

func (ni *NullInt16) UnmarshalText(text []byte) error

func (NullInt16) ValueOrZero 

func (ni NullInt16) ValueOrZero() int16

type NullInt32 

type NullInt32 struct {
	Int32 int32
	Valid bool
}

func (NullInt32) IsNil 

func (ni NullInt32) IsNil() bool

func (NullInt32) MarshalJSON 

func (ni NullInt32) MarshalJSON() ([]byte, error)

func (NullInt32) MarshalText 

func (ni NullInt32) MarshalText() ([]byte, error)

func (NullInt32) Ptr 

func (ni NullInt32) Ptr() *int32

func (*NullInt32) UnmarshalJSON 

func (ni *NullInt32) UnmarshalJSON(data []byte) error

func (*NullInt32) UnmarshalText 

func (ni *NullInt32) UnmarshalText(text []byte) error

func (NullInt32) ValueOrZero 

func (ni NullInt32) ValueOrZero() int32

type NullInt64 

type NullInt64 struct {
	Int64 int64
	Valid bool
}

func (NullInt64) IsNil 

func (ni NullInt64) IsNil() bool

func (NullInt64) MarshalJSON 

func (ni NullInt64) MarshalJSON() ([]byte, error)

func (NullInt64) MarshalText 

func (ni NullInt64) MarshalText() ([]byte, error)

func (NullInt64) Ptr 

func (ni NullInt64) Ptr() *int64

func (*NullInt64) UnmarshalJSON 

func (ni *NullInt64) UnmarshalJSON(data []byte) error

func (*NullInt64) UnmarshalText 

func (ni *NullInt64) UnmarshalText(text []byte) error

func (NullInt64) ValueOrZero 

func (ni NullInt64) ValueOrZero() int64

type NullInt8 

type NullInt8 struct {
	Int8  int8
	Valid bool
}

func (NullInt8) IsNil 

func (ni NullInt8) IsNil() bool

func (NullInt8) MarshalJSON 

func (ni NullInt8) MarshalJSON() ([]byte, error)

func (NullInt8) MarshalText 

func (ni NullInt8) MarshalText() ([]byte, error)

func (NullInt8) Ptr 

func (ni NullInt8) Ptr() *int8

func (*NullInt8) UnmarshalJSON 

func (ni *NullInt8) UnmarshalJSON(data []byte) error

func (*NullInt8) UnmarshalText 

func (ni *NullInt8) UnmarshalText(text []byte) error

func (NullInt8) ValueOrZero 

func (ni NullInt8) ValueOrZero() int8

type NullString 

type NullString struct {
	String string
	Valid  bool
}

func (NullString) IsNil 

func (ns NullString) IsNil() bool

func (NullString) MarshalJSON 

func (ns NullString) MarshalJSON() ([]byte, error)

func (NullString) MarshalText 

func (ns NullString) MarshalText() ([]byte, error)

func (NullString) Ptr 

func (ns NullString) Ptr() *string

func (*NullString) UnmarshalJSON 

func (ns *NullString) UnmarshalJSON(data []byte) error

func (*NullString) UnmarshalText 

func (ns *NullString) UnmarshalText(text []byte) error

func (NullString) ValueOrZero 

func (ns NullString) ValueOrZero() string

type NullTime 

type NullTime struct {
	Time  time.Time
	Valid bool
}

func (NullTime) IsNil 

func (nt NullTime) IsNil() bool

func (NullTime) Ptr 

func (nt NullTime) Ptr() *time.Time

func (NullTime) ValueOrZero 

func (nt NullTime) ValueOrZero() time.Time

type NullType 

type NullType interface {
	IsNil() bool
}

type NullUint 

type NullUint struct {
	Uint  uint
	Valid bool
}

func (NullUint) IsNil 

func (nu NullUint) IsNil() bool

func (NullUint) MarshalJSON 

func (ni NullUint) MarshalJSON() ([]byte, error)

func (NullUint) MarshalText 

func (ni NullUint) MarshalText() ([]byte, error)

func (NullUint) Ptr 

func (nu NullUint) Ptr() *uint

func (*NullUint) UnmarshalJSON 

func (nu *NullUint) UnmarshalJSON(data []byte) error

func (*NullUint) UnmarshalText 

func (nu *NullUint) UnmarshalText(text []byte) error

func (NullUint) ValueOrZero 

func (nu NullUint) ValueOrZero() uint

type NullUint16 

type NullUint16 struct {
	Uint16 uint16
	Valid  bool
}

func (NullUint16) IsNil 

func (nu NullUint16) IsNil() bool

func (NullUint16) MarshalJSON 

func (nu NullUint16) MarshalJSON() ([]byte, error)

func (NullUint16) MarshalText 

func (nu NullUint16) MarshalText() ([]byte, error)

func (NullUint16) Ptr 

func (nu NullUint16) Ptr() *uint16

func (*NullUint16) UnmarshalJSON 

func (nu *NullUint16) UnmarshalJSON(data []byte) error

func (*NullUint16) UnmarshalText 

func (nu *NullUint16) UnmarshalText(text []byte) error

func (NullUint16) ValueOrZero 

func (nu NullUint16) ValueOrZero() uint16

type NullUint32 

type NullUint32 struct {
	Uint32 uint32
	Valid  bool
}

func (NullUint32) IsNil 

func (nu NullUint32) IsNil() bool

func (NullUint32) MarshalJSON 

func (nu NullUint32) MarshalJSON() ([]byte, error)

func (NullUint32) MarshalText 

func (nu NullUint32) MarshalText() ([]byte, error)

func (NullUint32) Ptr 

func (nu NullUint32) Ptr() *uint32

func (*NullUint32) UnmarshalJSON 

func (nu *NullUint32) UnmarshalJSON(data []byte) error

func (*NullUint32) UnmarshalText 

func (nu *NullUint32) UnmarshalText(text []byte) error

func (NullUint32) ValueOrZero 

func (nu NullUint32) ValueOrZero() uint32

type NullUint64 

type NullUint64 struct {
	Uint64 uint64
	Valid  bool
}

func (NullUint64) IsNil 

func (nu NullUint64) IsNil() bool

func (NullUint64) MarshalJSON 

func (nu NullUint64) MarshalJSON() ([]byte, error)

func (NullUint64) MarshalText 

func (nu NullUint64) MarshalText() ([]byte, error)

func (NullUint64) Ptr 

func (nu NullUint64) Ptr() *uint64

func (*NullUint64) UnmarshalJSON 

func (nu *NullUint64) UnmarshalJSON(data []byte) error

func (*NullUint64) UnmarshalText 

func (nu *NullUint64) UnmarshalText(text []byte) error

func (NullUint64) ValueOrZero 

func (nu NullUint64) ValueOrZero() uint64

type NullUint8 

type NullUint8 struct {
	Uint8 uint8
	Valid bool
}

func (NullUint8) IsNil 

func (nu NullUint8) IsNil() bool

func (NullUint8) MarshalJSON 

func (nu NullUint8) MarshalJSON() ([]byte, error)

func (NullUint8) MarshalText 

func (nu NullUint8) MarshalText() ([]byte, error)

func (NullUint8) Ptr 

func (nu NullUint8) Ptr() *uint8

func (*NullUint8) UnmarshalJSON 

func (nu *NullUint8) UnmarshalJSON(data []byte) error

func (*NullUint8) UnmarshalText 

func (nu *NullUint8) UnmarshalText(text []byte) error

func (NullUint8) ValueOrZero 

func (nu NullUint8) ValueOrZero() uint8

type Pongo2Template 

type Pongo2Template struct {
	SqlTemplateRootDir string
	Template           map[string]*pongo2.Template

	Capacity uint
	Cipher   Cipher
	Type     int
	Funcs    map[string]FuncMap
	// contains filtered or unexported fields
}

func Pongo2 

func Pongo2(directory, extension string) *Pongo2Template

func (*Pongo2Template) AddSqlTemplate 

func (sqlTemplate *Pongo2Template) AddSqlTemplate(key string, sqlTemplateStr string) error

func (*Pongo2Template) BatchAddSqlTemplate 

func (sqlTemplate *Pongo2Template) BatchAddSqlTemplate(key string, sqlTemplateStrMap map[string]string) error

func (*Pongo2Template) BatchLoadSqlTemplate 

func (sqlTemplate *Pongo2Template) BatchLoadSqlTemplate(filepathSlice []string) error

func (*Pongo2Template) BatchReloadSqlTemplate 

func (sqlTemplate *Pongo2Template) BatchReloadSqlTemplate(filepathSlice []string) error

func (*Pongo2Template) BatchRemoveSqlTemplate 

func (sqlTemplate *Pongo2Template) BatchRemoveSqlTemplate(key []string)

func (*Pongo2Template) BatchUpdateSqlTemplate 

func (sqlTemplate *Pongo2Template) BatchUpdateSqlTemplate(key string, sqlTemplateStrMap map[string]string) error

func (*Pongo2Template) Execute 

func (sqlTemplate *Pongo2Template) Execute(key string, args ...interface{}) (string, error)

func (*Pongo2Template) Extension 

func (sqlTemplate *Pongo2Template) Extension() string

func (*Pongo2Template) GetSqlTemplate 

func (sqlTemplate *Pongo2Template) GetSqlTemplate(key string) *pongo2.Template

func (*Pongo2Template) GetSqlTemplates 

func (sqlTemplate *Pongo2Template) GetSqlTemplates(keys ...interface{}) map[string]*pongo2.Template

func (*Pongo2Template) LoadSqlTemplate 

func (sqlTemplate *Pongo2Template) LoadSqlTemplate(filepath string) error

-------------------------------------------------------------------------------------------------------------

func (*Pongo2Template) ReadTemplate 

func (sqlTemplate *Pongo2Template) ReadTemplate(filepath string) ([]byte, error)

func (*Pongo2Template) ReloadSqlTemplate 

func (sqlTemplate *Pongo2Template) ReloadSqlTemplate(filepath string) error

func (*Pongo2Template) RemoveSqlTemplate 

func (sqlTemplate *Pongo2Template) RemoveSqlTemplate(key string)

func (*Pongo2Template) RootDir 

func (sqlTemplate *Pongo2Template) RootDir() string

func (*Pongo2Template) SetFuncs 

func (sqlTemplate *Pongo2Template) SetFuncs(key string, funcMap FuncMap)

func (*Pongo2Template) SetSqlTemplateCipher 

func (sqlTemplate *Pongo2Template) SetSqlTemplateCipher(cipher Cipher)

func (*Pongo2Template) UpdateSqlTemplate 

func (sqlTemplate *Pongo2Template) UpdateSqlTemplate(key string, sqlTemplateStr string) error

func (*Pongo2Template) WalkFunc 

func (sqlTemplate *Pongo2Template) WalkFunc(path string, info os.FileInfo, err error) error

type Record 

type Record map[string]Value

type Result 

type Result []Record

type ResultBean 

type ResultBean struct {
	Has    bool
	Result interface{}
	Error  error
}

func (*ResultBean) GetResult 

func (resultBean *ResultBean) GetResult() (bool, interface{}, error)

func (*ResultBean) Json 

func (resultBean *ResultBean) Json() (bool, string, error)

func (*ResultBean) Xml 

func (resultBean *ResultBean) Xml() (bool, string, error)

func (*ResultBean) XmlIndent 

func (resultBean *ResultBean) XmlIndent(prefix string, indent string, recordTag string) (bool, string, error)

type ResultMap 

type ResultMap struct {
	Result []map[string]interface{}
	Error  error
}

func (*ResultMap) Count 

func (resultMap *ResultMap) Count() (int, error)

func (*ResultMap) Json 

func (resultMap *ResultMap) Json() (string, error)

func (*ResultMap) List 

func (resultMap *ResultMap) List() ([]map[string]interface{}, error)

func (*ResultMap) ListPage 

func (resultMap *ResultMap) ListPage(firstResult int, maxResults int) ([]map[string]interface{}, error)

func (*ResultMap) SaveAsCSV 

func (resultMap *ResultMap) SaveAsCSV(filename string, headers []string, perm os.FileMode) error

func (*ResultMap) SaveAsHTML 

func (resultMap *ResultMap) SaveAsHTML(filename string, headers []string, perm os.FileMode) error

func (*ResultMap) SaveAsJSON 

func (resultMap *ResultMap) SaveAsJSON(filename string, headers []string, perm os.FileMode) error

func (*ResultMap) SaveAsTSV 

func (resultMap *ResultMap) SaveAsTSV(filename string, headers []string, perm os.FileMode) error

func (*ResultMap) SaveAsXLSX 

func (resultMap *ResultMap) SaveAsXLSX(filename string, headers []string, perm os.FileMode) error

func (*ResultMap) SaveAsXML 

func (resultMap *ResultMap) SaveAsXML(filename string, headers []string, perm os.FileMode) error

func (*ResultMap) SaveAsXMLWithTagNamePrefixIndent 

func (resultMap *ResultMap) SaveAsXMLWithTagNamePrefixIndent(tagName string, prifix string, indent string, filename string, headers []string, perm os.FileMode) error

func (*ResultMap) SaveAsYAML 

func (resultMap *ResultMap) SaveAsYAML(filename string, headers []string, perm os.FileMode) error

func (*ResultMap) Xml 

func (resultMap *ResultMap) Xml() (string, error)

func (*ResultMap) XmlIndent 

func (resultMap *ResultMap) XmlIndent(prefix string, indent string, recordTag string) (string, error)

type ResultStructs 

type ResultStructs struct {
	Result interface{}
	Error  error
}

func (*ResultStructs) Json 

func (resultStructs *ResultStructs) Json() (string, error)

func (*ResultStructs) Xml 

func (resultStructs *ResultStructs) Xml() (string, error)

func (*ResultStructs) XmlIndent 

func (resultStructs *ResultStructs) XmlIndent(prefix string, indent string, recordTag string) (string, error)

type ResultValue 

type ResultValue struct {
	Result Result
	Error  error
}

func (*ResultValue) Count 

func (resultValue *ResultValue) Count() (int, error)

func (*ResultValue) List 

func (resultValue *ResultValue) List() (Result, error)

func (*ResultValue) ListPage 

func (resultValue *ResultValue) ListPage(firstResult int, maxResults int) (Result, error)

type Rows 

type Rows struct {
	// contains filtered or unexported fields
}

Rows rows wrapper a rows to

func (*Rows) Close 

func (rows *Rows) Close() error

Close session if session.IsAutoClose is true, and claimed any opened resources

func (*Rows) Err 

func (rows *Rows) Err() error

Err returns the error, if any, that was encountered during iteration. Err may be called after an explicit or implicit Close.

func (*Rows) Next 

func (rows *Rows) Next() bool

Next move cursor to next record, return false if end has reached

func (*Rows) Scan 

func (rows *Rows) Scan(bean interface{}) error

Scan row record to bean properties

type RsaEncrypt 

type RsaEncrypt struct {
	PubKey string
	PriKey string

	EncryptMode int
	DecryptMode int
	// contains filtered or unexported fields
}

func (*RsaEncrypt) Byte 

func (this *RsaEncrypt) Byte(in []byte, mode int) ([]byte, error)

func (*RsaEncrypt) Decrypt 

func (this *RsaEncrypt) Decrypt(crypted []byte) (decrypted []byte, err error)

func (*RsaEncrypt) Encrypt 

func (this *RsaEncrypt) Encrypt(strMesg string) ([]byte, error)

func (*RsaEncrypt) IO 

func (this *RsaEncrypt) IO(in io.Reader, out io.Writer, mode int) error

type Scanner 

type Scanner struct {
	// contains filtered or unexported fields
}

func (*Scanner) Run 

func (s *Scanner) Run(io *bufio.Scanner) map[string]string

type Session 

type Session struct {
	// contains filtered or unexported fields
}

Session keep a pointer to sql.DB and provides all execution of all kind of database operations.

func (*Session) After 

func (session *Session) After(closures func(interface{})) *Session

After Apply after Processor, affected bean is passed to closure arg

func (*Session) Alias 

func (session *Session) Alias(alias string) *Session

Alias set the table alias

func (*Session) AllCols 

func (session *Session) AllCols() *Session

AllCols ask all columns

func (*Session) And 

func (session *Session) And(query interface{}, args ...interface{}) *Session

And provides custom query condition.

func (*Session) Asc 

func (session *Session) Asc(colNames ...string) *Session

Asc provide asc order by query condition, the input parameters are columns.

func (*Session) Before 

func (session *Session) Before(closures func(interface{})) *Session

Before Apply before Processor, affected bean is passed to closure arg

func (*Session) Begin 

func (session *Session) Begin() error

Begin a transaction

func (*Session) BeginTrans 

func (session *Session) BeginTrans(transactionDefinition ...int) (*Transaction, error)

func (*Session) BufferSize 

func (session *Session) BufferSize(size int) *Session

BufferSize sets the buffersize for iterate

func (*Session) Cascade 

func (session *Session) Cascade(trueOrFalse ...bool) *Session

Cascade indicates if loading sub Struct

func (*Session) Charset 

func (session *Session) Charset(charset string) *Session

Charset is only avialble mysql dialect currently

func (*Session) Close 

func (session *Session) Close() error

Close release the connection from pool

func (*Session) Cols 

func (session *Session) Cols(columns ...string) *Session

Cols provides some columns to special

func (*Session) Commit 

func (session *Session) Commit() error

Commit When using transaction, Commit will commit all operations.

func (*Session) Conds 

func (session *Session) Conds() builder.Cond

Conds returns session query conditions except auto bean conditions

func (*Session) Context 

func (session *Session) Context(ctx context.Context) *Session

ContextHook sets the context on this session

func (*Session) ContextCache 

func (session *Session) ContextCache(context contexts.ContextCache) *Session

ContextCache enable context cache or not

func (*Session) Count 

func (session *Session) Count(bean ...interface{}) (int64, error)

Count counts the records. bean's non-empty fields are conditions.

func (*Session) CreateIndexes 

func (session *Session) CreateIndexes(bean interface{}) error

CreateIndexes create indexes

func (*Session) CreateTable 

func (session *Session) CreateTable(bean interface{}) error

CreateTable create a table according a bean

func (*Session) CreateUniques 

func (session *Session) CreateUniques(bean interface{}) error

CreateUniques create uniques

func (*Session) DB 

func (session *Session) DB() *core.DB

DB db return the wrapper of sql.DB

func (*Session) Decr 

func (session *Session) Decr(column string, arg ...interface{}) *Session

Decr provides a query string like "count = count - 1"

func (*Session) Delete 

func (session *Session) Delete(bean interface{}) (int64, error)

Delete records, bean's non-empty fields are conditions

func (*Session) Desc 

func (session *Session) Desc(colNames ...string) *Session

Desc provide desc order by query condition, the input parameters are columns.

func (*Session) Distinct 

func (session *Session) Distinct(columns ...string) *Session

Distinct use for distinct columns. Caution: when you are using cache, distinct will not be cached because cache system need id, but distinct will not provide id

func (*Session) DropIndexes 

func (session *Session) DropIndexes(bean interface{}) error

DropIndexes drop indexes

func (*Session) DropTable 

func (session *Session) DropTable(beanOrTableName interface{}) error

DropTable drop table will drop table if exist, if drop failed, it will return error

func (*Session) Engine 

func (session *Session) Engine() *Engine

func (*Session) Exec 

func (session *Session) Exec(sqlOrArgs ...interface{}) (sql.Result, error)

Exec raw sql

func (*Session) Execute 

func (session *Session) Execute() (sql.Result, error)

Execute raw sql

func (*Session) Exist 

func (session *Session) Exist(bean ...interface{}) (bool, error)

Exist returns true if the record exist otherwise return false

func (*Session) Find 

func (session *Session) Find(rowsSlicePtr interface{}, condiBean ...interface{}) error

Find retrieve records from table, condiBeans's non-empty fields are conditions. beans could be []Struct, []*Struct, map[int64]Struct map[int64]*Struct

func (*Session) FindAndCount 

func (session *Session) FindAndCount(rowsSlicePtr interface{}, condiBean ...interface{}) (int64, error)

FindAndCount find the results and also return the counts

func (*Session) ForUpdate 

func (session *Session) ForUpdate() *Session

ForUpdate Set Read/Write locking for UPDATE

func (*Session) Get 

func (session *Session) Get(bean interface{}) (bool, error)

Get retrieve one record from database, bean's non-empty fields will be as conditions

func (*Session) GetFirst 

func (session *Session) GetFirst(bean interface{}) *ResultBean

func (*Session) GroupBy 

func (session *Session) GroupBy(keys string) *Session

GroupBy Generate Group By statement

func (*Session) Having 

func (session *Session) Having(conditions string) *Session

Having Generate Having statement

func (*Session) ID 

func (session *Session) ID(id interface{}) *Session

ID provides converting id as a query condition

func (*Session) Import 

func (session *Session) Import(r io.Reader) ([]sql.Result, error)

Import SQL DDL from io.Reader

func (*Session) ImportFile 

func (session *Session) ImportFile(ddlPath string) ([]sql.Result, error)

ImportFile SQL DDL file

func (*Session) In 

func (session *Session) In(column string, args ...interface{}) *Session

In provides a query string like "id in (1, 2, 3)"

func (*Session) Incr 

func (session *Session) Incr(column string, arg ...interface{}) *Session

Incr provides a query string like "count = count + 1"

func (*Session) Insert 

func (session *Session) Insert(beans ...interface{}) (int64, error)

Insert insert one or more beans

func (*Session) InsertMulti 

func (session *Session) InsertMulti(rowsSlicePtr interface{}) (int64, error)

InsertMulti insert multiple records

func (*Session) InsertOne 

func (session *Session) InsertOne(bean interface{}) (int64, error)

InsertOne insert only one struct into database as a record. The in parameter bean must a struct or a point to struct. The return parameter is inserted and error

func (*Session) IsClosed 

func (session *Session) IsClosed() bool

IsClosed returns if session is closed

func (*Session) IsTableEmpty 

func (session *Session) IsTableEmpty(bean interface{}) (bool, error)

IsTableEmpty if table have any records

func (*Session) IsTableExist 

func (session *Session) IsTableExist(beanOrTableName interface{}) (bool, error)

IsTableExist if a table is exist

func (*Session) Iterate 

func (session *Session) Iterate(bean interface{}, fun IterFunc) error

Iterate record by record handle records from table, condiBeans's non-empty fields are conditions. beans could be []Struct, []*Struct, map[int64]Struct map[int64]*Struct

func (*Session) Join 

func (session *Session) Join(joinOperator string, tablename interface{}, condition string, args ...interface{}) *Session

Join join_operator should be one of INNER, LEFT OUTER, CROSS etc - this will be prepended to JOIN

func (*Session) LastSQL 

func (session *Session) LastSQL() (string, []interface{})

LastSQL returns last query information

func (*Session) Limit 

func (session *Session) Limit(limit int, start ...int) *Session

Limit provide limit and offset query condition

func (*Session) MustCols 

func (session *Session) MustCols(columns ...string) *Session

MustCols specify some columns must use even if they are empty

func (*Session) MustLogSQL 

func (session *Session) MustLogSQL(logs ...bool) *Session

MustLogSQL means record SQL or not and don't follow engine's setting

func (*Session) NoAutoCondition 

func (session *Session) NoAutoCondition(no ...bool) *Session

NoAutoCondition disable generate SQL condition from beans

func (*Session) NoAutoTime 

func (session *Session) NoAutoTime() *Session

NoAutoTime means do not automatically give created field and updated field the current time on the current session temporarily

func (*Session) NoCache 

func (session *Session) NoCache() *Session

NoCache ask this session do not retrieve data from cache system and get data from database directly.

func (*Session) NoCascade 

func (session *Session) NoCascade() *Session

NoCascade indicate that no cascade load child object

func (*Session) NotIn 

func (session *Session) NotIn(column string, args ...interface{}) *Session

NotIn provides a query string like "id in (1, 2, 3)"

func (*Session) Nullable 

func (session *Session) Nullable(columns ...string) *Session

Nullable Set null when column is zero-value and nullable for update

func (*Session) Omit 

func (session *Session) Omit(columns ...string) *Session

Omit Only not use the parameters as select or update columns

func (*Session) Or 

func (session *Session) Or(query interface{}, args ...interface{}) *Session

Or provides custom query condition.

func (*Session) OrderBy 

func (session *Session) OrderBy(order string) *Session

OrderBy provide order by query condition, the input parameter is the content after order by on a sql statement.

func (*Session) Ping 

func (session *Session) Ping() error

Ping test if database is ok

func (*Session) PingContext 

func (session *Session) PingContext(ctx context.Context) error

PingContext test if database is ok

func (*Session) Prepare 

func (session *Session) Prepare() *Session

Prepare set a flag to session that should be prepare statement before execute query

func (*Session) Query 

func (session *Session) Query() *ResultMap

Exec a raw sql and return records as ResultMap

func (*Session) QueryBytes 

func (session *Session) QueryBytes(sqlOrArgs ...interface{}) ([]map[string][]byte, error)

Query runs a raw sql and return records as []map[string][]byte

func (*Session) QueryExpr 

func (session *Session) QueryExpr(sqlOrArgs ...interface{}) sqlExpr

QueryExpr returns the query as bound SQL

func (*Session) QueryInterface 

func (session *Session) QueryInterface(sqlOrArgs ...interface{}) ([]map[string]interface{}, error)

QueryInterface runs a raw sql and return records as []map[string]interface{}

func (*Session) QueryResult 

func (session *Session) QueryResult(sqlOrArgs ...interface{}) *ResultValue

Query runs a raw sql and return records as ResultValue

func (*Session) QueryRows 

func (session *Session) QueryRows(sqlOrArgs ...interface{}) (*core.Rows, error)

func (*Session) QuerySliceString 

func (session *Session) QuerySliceString(sqlOrArgs ...interface{}) ([][]string, error)

QuerySliceString runs a raw sql and return records as [][]string

func (*Session) QueryString 

func (session *Session) QueryString(sqlOrArgs ...interface{}) ([]map[string]string, error)

QueryString runs a raw sql and return records as []map[string]string

func (*Session) QueryValue 

func (session *Session) QueryValue(sqlOrArgs ...interface{}) ([]map[string]Value, error)

func (*Session) QueryWithDateFormat 

func (session *Session) QueryWithDateFormat(dateFormat string) *ResultMap

Exec a raw sql and return records as ResultMap

func (*Session) Rollback 

func (session *Session) Rollback() error

Rollback When using transaction, you can rollback if any error

func (*Session) Rows 

func (session *Session) Rows(bean interface{}) (*Rows, error)

Rows return sql.Rows compatible Rows obj, as a forward Iterator object for iterating record by record, bean's non-empty fields are conditions.

func (*Session) SQL 

func (session *Session) SQL(query interface{}, args ...interface{}) *Session

SQL provides raw sql input parameter. When you have a complex SQL statement and cannot use Where, Id, In and etc. Methods to describe, you can use SQL.

func (*Session) Search 

func (session *Session) Search(rowsSlicePtr interface{}, condiBean ...interface{}) *ResultStructs

func (*Session) Select 

func (session *Session) Select(str string) *Session

Select provides some columns to special

func (*Session) SetExpr 

func (session *Session) SetExpr(column string, expression interface{}) *Session

SetExpr provides a query string like "column = {expression}"

func (*Session) SqlMapClient 

func (session *Session) SqlMapClient(sqlTagName string, args ...interface{}) *Session

func (*Session) SqlMapsClient 

func (session *Session) SqlMapsClient(sqlkeys interface{}, parmas ...interface{}) *SqlMapsExecutor

func (*Session) SqlTemplateClient 

func (session *Session) SqlTemplateClient(sqlTagName string, args ...interface{}) *Session

func (*Session) SqlTemplatesClient 

func (session *Session) SqlTemplatesClient(sqlkeys interface{}, parmas ...interface{}) *SqlTemplatesExecutor

func (*Session) Sqls 

func (session *Session) Sqls(sqls interface{}, parmas ...interface{}) *SqlsExecutor

func (*Session) StoreEngine 

func (session *Session) StoreEngine(storeEngine string) *Session

StoreEngine is only avialble mysql dialect currently

func (*Session) Sum 

func (session *Session) Sum(bean interface{}, columnName string) (res float64, err error)

Sum call sum some column. bean's non-empty fields are conditions.

func (*Session) SumInt 

func (session *Session) SumInt(bean interface{}, columnName string) (res int64, err error)

SumInt call sum some column. bean's non-empty fields are conditions.

func (*Session) Sums 

func (session *Session) Sums(bean interface{}, columnNames ...string) ([]float64, error)

Sums call sum some columns. bean's non-empty fields are conditions.

func (*Session) SumsInt 

func (session *Session) SumsInt(bean interface{}, columnNames ...string) ([]int64, error)

SumsInt sum specify columns and return as []int64 instead of []float64

func (*Session) Sync2 

func (session *Session) Sync2(beans ...interface{}) error

Sync2 synchronize structs to database tables

func (*Session) Table 

func (session *Session) Table(tableNameOrBean interface{}) *Session

Table can input a string or pointer to struct for special a table to operate.

func (*Session) Unscoped 

func (session *Session) Unscoped() *Session

Unscoped always disable struct tag "deleted"

func (*Session) Update 

func (session *Session) Update(bean interface{}, condiBean ...interface{}) (int64, error)

Update records, bean's non-empty fields are updated contents, condiBean' non-empty filds are conditions CAUTION: 

1.bool will defaultly be updated content nor conditions
 You should call UseBool if you have bool to use.
2.float32 & float64 may be not inexact as conditions

func (*Session) UseBool 

func (session *Session) UseBool(columns ...string) *Session

UseBool automatically retrieve condition according struct, but if struct has bool field, it will ignore them. So use UseBool to tell system to do not ignore them. If no parameters, it will use all the bool field of struct, or it will use parameters's columns

func (*Session) Where 

func (session *Session) Where(query interface{}, args ...interface{}) *Session

Where provides custom query condition.

type Sql 

type Sql struct {
	Value string `xml:",chardata"`
	Id    string `xml:"id,attr"`
}

type SqlM 

type SqlM interface {
	RootDir() string
	Extension() string
}

type SqlMap 

type SqlMap struct {
	SqlMapRootDir string
	Sql           map[string]string
	Extension     map[string]string
	Capacity      uint
	Cipher        Cipher
}

type SqlMapsExecutor 

type SqlMapsExecutor struct {
	// contains filtered or unexported fields
}

func (*SqlMapsExecutor) Execute 

func (sqlMapsExecutor *SqlMapsExecutor) Execute() ([][]map[string]interface{}, map[string][]map[string]interface{}, error)

type SqlTemplate 

type SqlTemplate interface {
	WalkFunc(path string, info os.FileInfo, err error) error

	ReadTemplate(filepath string) ([]byte, error)
	Execute(key string, args ...interface{}) (string, error)
	RootDir() string
	Extension() string
	SetSqlTemplateCipher(cipher Cipher)
	LoadSqlTemplate(filepath string) error
	BatchLoadSqlTemplate(filepathSlice []string) error
	ReloadSqlTemplate(filepath string) error
	BatchReloadSqlTemplate(filepathSlice []string) error
	AddSqlTemplate(key string, sqlTemplateStr string) error
	UpdateSqlTemplate(key string, sqlTemplateStr string) error
	RemoveSqlTemplate(key string)
	BatchAddSqlTemplate(key string, sqlTemplateStrMap map[string]string) error
	BatchUpdateSqlTemplate(key string, sqlTemplateStrMap map[string]string) error
	BatchRemoveSqlTemplate(key []string)
	SetFuncs(key string, funcMap FuncMap)
	// contains filtered or unexported methods
}

type SqlTemplatesExecutor 

type SqlTemplatesExecutor struct {
	// contains filtered or unexported fields
}

func (*SqlTemplatesExecutor) Execute 

func (sqlTemplatesExecutor *SqlTemplatesExecutor) Execute() ([][]map[string]interface{}, map[string][]map[string]interface{}, error)

type SqlsExecutor 

type SqlsExecutor struct {
	// contains filtered or unexported fields
}

func (*SqlsExecutor) Execute 

func (sqlsExecutor *SqlsExecutor) Execute() ([][]map[string]interface{}, map[string][]map[string]interface{}, error)

type StdJSON 

type StdJSON struct{}

StdJSON implements JSONInterface via encoding/json

func (StdJSON) Marshal 

func (StdJSON) Marshal(v interface{}) ([]byte, error)

Marshal implements JSONInterface

func (StdJSON) Unmarshal 

func (StdJSON) Unmarshal(data []byte, v interface{}) error

Unmarshal implements JSONInterface

type StringBuilder 

type StringBuilder struct {
	// contains filtered or unexported fields
}

A StringBuilder is used to efficiently build a string using Write methods. It minimizes memory copying. The zero value is ready to use. Do not copy a non-zero Builder.

func (*StringBuilder) Grow 

func (b *StringBuilder) Grow(n int)

Grow grows b's capacity, if necessary, to guarantee space for another n bytes. After Grow(n), at least n bytes can be written to b without another allocation. If n is negative, Grow panics.

func (*StringBuilder) Len 

func (b *StringBuilder) Len() int

Len returns the number of accumulated bytes; b.Len() == len(b.String()).

func (*StringBuilder) Reset 

func (b *StringBuilder) Reset()

Reset resets the Builder to be empty.

func (*StringBuilder) String 

func (b *StringBuilder) String() string

String returns the accumulated string.

func (*StringBuilder) Write 

func (b *StringBuilder) Write(p []byte) (int, error)

Write appends the contents of p to b's buffer. Write always returns len(p), nil.

func (*StringBuilder) WriteByte 

func (b *StringBuilder) WriteByte(c byte) error

WriteByte appends the byte c to b's buffer. The returned error is always nil.

func (*StringBuilder) WriteRune 

func (b *StringBuilder) WriteRune(r rune) (int, error)

WriteRune appends the UTF-8 encoding of Unicode code point r to b's buffer. It returns the length of r and a nil error.

func (*StringBuilder) WriteString 

func (b *StringBuilder) WriteString(s string) (int, error)

WriteString appends the contents of s to b's buffer. It returns the length of s and a nil error.

type Table 

type Table struct {
	*schemas.Table
	Name string
}

Table table struct

func (*Table) IsValid 

func (t *Table) IsValid() bool

IsValid if table is valid

type Transaction 

type Transaction struct {
	// contains filtered or unexported fields
}

func (*Transaction) BeginTrans 

func (transaction *Transaction) BeginTrans() error

Begin a transaction

func (*Transaction) CommitTrans 

func (transaction *Transaction) CommitTrans() error

Commit When using transaction, Commit will commit all operations.

func (*Transaction) Do 

func (transaction *Transaction) Do(doFunc func(params ...interface{}), params ...interface{})

func (*Transaction) GetSavePointID 

func (transaction *Transaction) GetSavePointID() string

func (*Transaction) IsExistingTransaction 

func (transaction *Transaction) IsExistingTransaction() bool

func (*Transaction) RollbackToSavePoint 

func (transaction *Transaction) RollbackToSavePoint(savePointID string) error

func (*Transaction) RollbackTrans 

func (transaction *Transaction) RollbackTrans() error

Rollback When using transaction, you can rollback if any error

func (*Transaction) SavePoint 

func (transaction *Transaction) SavePoint(savePointID string) error

func (*Transaction) Session 

func (transaction *Transaction) Session() *Session

func (*Transaction) TransactionDefinition 

func (transaction *Transaction) TransactionDefinition() int

func (*Transaction) WaitForDo 

func (transaction *Transaction) WaitForDo(doFunc func(params ...interface{}), params ...interface{})

type TripleDesEncrypt 

type TripleDesEncrypt struct {
	PubKey string
}

func (*TripleDesEncrypt) Decrypt 

func (this *TripleDesEncrypt) Decrypt(crypted []byte) ([]byte, error)

3DES解密

func (*TripleDesEncrypt) Encrypt 

func (this *TripleDesEncrypt) Encrypt(strMesg string) ([]byte, error)

3DES加密

type Value 

type Value []byte

func (Value) Bool 

func (v Value) Bool() bool

func (Value) Bytes 

func (v Value) Bytes() []byte

func (Value) Float32 

func (v Value) Float32() float32

func (Value) Float64 

func (v Value) Float64() float64

func (Value) Int 

func (v Value) Int() int

func (Value) Int16 

func (v Value) Int16() int16

func (Value) Int32 

func (v Value) Int32() int32

func (Value) Int64 

func (v Value) Int64() int64

func (Value) Int8 

func (v Value) Int8() int8

func (Value) NullBool 

func (v Value) NullBool() NullBool

func (Value) NullFloat32 

func (v Value) NullFloat32() NullFloat32

func (Value) NullFloat64 

func (v Value) NullFloat64() NullFloat64

func (Value) NullInt 

func (v Value) NullInt() NullInt

func (Value) NullInt16 

func (v Value) NullInt16() NullInt16

func (Value) NullInt32 

func (v Value) NullInt32() NullInt32

func (Value) NullInt64 

func (v Value) NullInt64() NullInt64

func (Value) NullInt8 

func (v Value) NullInt8() NullInt8

func (Value) NullString 

func (v Value) NullString() NullString

func (Value) NullTime 

func (v Value) NullTime(format string, TZLocation ...*time.Location) NullTime

func (Value) NullUint 

func (v Value) NullUint() NullUint

func (Value) NullUint16 

func (v Value) NullUint16() NullUint16

func (Value) NullUint32 

func (v Value) NullUint32() NullUint32

func (Value) NullUint64 

func (v Value) NullUint64() NullUint64

func (Value) NullUint8 

func (v Value) NullUint8() NullUint8

func (Value) String 

func (v Value) String() string

func (Value) Time 

func (v Value) Time(format string, TZLocation ...*time.Location) time.Time

func (Value) TimeDuration 

func (v Value) TimeDuration() time.Duration

func (Value) Uint 

func (v Value) Uint() uint

func (Value) Uint16 

func (v Value) Uint16() uint16

func (Value) Uint32 

func (v Value) Uint32() uint32

func (Value) Uint64 

func (v Value) Uint64() uint64

func (Value) Uint8 

func (v Value) Uint8() uint8

type XSqlMap 

type XSqlMap struct {
	// contains filtered or unexported fields
}

func XSql 

func XSql(directory, extension string) *XSqlMap

func (*XSqlMap) Extension 

func (sqlMap *XSqlMap) Extension() string

func (*XSqlMap) RootDir 

func (sqlMap *XSqlMap) RootDir() string

type XmlSql 

type XmlSql struct {
	Sql []Sql `xml:"sql"`
}

type XmlSqlMap 

type XmlSqlMap struct {
	// contains filtered or unexported fields
}

func Xml 

func Xml(directory, extension string) *XmlSqlMap

func (*XmlSqlMap) Extension 

func (sqlMap *XmlSqlMap) Extension() string

func (*XmlSqlMap) RootDir 

func (sqlMap *XmlSqlMap) RootDir() string

Source Files

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statements
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