reflect

Documentation

Overview

This package provides some punk-rock reflection which is not in the stdlib.

Index

• Constants
• func FieldsAndValues(val interface{}) ([]string, []interface{}, bool)
• func MapToStruct(m map[string]interface{}, struc interface{}) error
• func StructFieldMap(structType r.Type, lowercaseFields bool) (map[string]Field, error)
• func StructToMap(val interface{}) (map[string]interface{}, bool)
• type Field
  • func (f Field) Index() []int
  • func (f Field) Name() string
  • func (f Field) Type() reflect.Type

Constants

const TagName = "cql"

Functions

func FieldsAndValues

func FieldsAndValues(val interface{}) ([]string, []interface{}, bool)

FieldsAndValues returns a list field names and a corresponding list of values for the given struct. For details on how the field names are determined please see StructToMap.

func MapToStruct

func MapToStruct(m map[string]interface{}, struc interface{}) error

MapToStruct converts a map to a struct. It is the inverse of the StructToMap function. For details see StructToMap.

func StructFieldMap

func StructFieldMap(structType r.Type, lowercaseFields bool) (map[string]Field, error)

StructFieldMap takes a struct type and extracts the Field info into a map by field name. The "cql" key in the struct field's tag value is the key name. Examples:

// Field appears in the resulting map as key "myName".
Field int `cql:"myName"`

// Field appears in the resulting as key "Field"
Field int

// Field appears in the resulting map as key "myName"
Field int "myName"

If lowercaseFields is set to true, field names are lowercased in the map

func StructToMap

func StructToMap(val interface{}) (map[string]interface{}, bool)

StructToMap converts a struct to map. The object's default key string is the struct field name but can be specified in the struct field's tag value. The "cql" key in the struct field's tag value is the key name. Examples:

// Field appears in the resulting map as key "myName".
Field int `cql:"myName"`

// Field appears in the resulting as key "Field"
Field int

// Field appears in the resulting map as key "myName"
Field int "myName"

Types

type Field

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

Field represents a single field found in a struct.

func (Field) Index

func (f Field) Index() []int

func (Field) Name

func (f Field) Name() string

func (Field) Type

func (f Field) Type() reflect.Type