ent

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 Go to latest Published: Apr 4, 2021 License: Apache-2.0 Imports: 19 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	// Operation types.
	OpCreate    = ent.OpCreate
	OpDelete    = ent.OpDelete
	OpDeleteOne = ent.OpDeleteOne
	OpUpdate    = ent.OpUpdate
	OpUpdateOne = ent.OpUpdateOne

	// Node types.
	TypeBook       = "Book"
	TypeCollection = "Collection"
)

Variables

This section is empty.

Functions

func IsConstraintError 

func IsConstraintError(err error) bool

IsConstraintError returns a boolean indicating whether the error is a constraint failure.

func IsNotFound 

func IsNotFound(err error) bool

IsNotFound returns a boolean indicating whether the error is a not found error.

func IsNotLoaded 

func IsNotLoaded(err error) bool

IsNotLoaded returns a boolean indicating whether the error is a not loaded error.

func IsNotSingular 

func IsNotSingular(err error) bool

IsNotSingular returns a boolean indicating whether the error is a not singular error.

func IsValidationError 

func IsValidationError(err error) bool

IsValidationError returns a boolean indicating whether the error is a validaton error.

func MaskNotFound 

func MaskNotFound(err error) error

MaskNotFound masks not found error.

func NewContext 

func NewContext(parent context.Context, c *Client) context.Context

NewContext returns a new context with the given Client attached.

func NewTxContext 

func NewTxContext(parent context.Context, tx *Tx) context.Context

NewTxContext returns a new context with the given Tx attached.

Types

type AggregateFunc 

type AggregateFunc func(*sql.Selector, func(string) bool) string

AggregateFunc applies an aggregation step on the group-by traversal/selector.

func As 

func As(fn AggregateFunc, end string) AggregateFunc

As is a pseudo aggregation function for renaming another other functions with custom names. For example: 

GroupBy(field1, field2).
Aggregate(ent.As(ent.Sum(field1), "sum_field1"), (ent.As(ent.Sum(field2), "sum_field2")).
Scan(ctx, &v)

func Count 

func Count() AggregateFunc

Count applies the "count" aggregation function on each group.

func Max 

func Max(field string) AggregateFunc

Max applies the "max" aggregation function on the given field of each group.

func Mean 

func Mean(field string) AggregateFunc

Mean applies the "mean" aggregation function on the given field of each group.

func Min 

func Min(field string) AggregateFunc

Min applies the "min" aggregation function on the given field of each group.

func Sum 

func Sum(field string) AggregateFunc

Sum applies the "sum" aggregation function on the given field of each group.

type Book 

type Book struct {

	// ID of the ent.
	ID int `json:"id,omitempty"`
	// CreatedAt holds the value of the "createdAt" field.
	CreatedAt time.Time `json:"createdAt,omitempty"`
	// Updatedat holds the value of the "updatedat" field.
	Updatedat time.Time `json:"updatedat,omitempty"`
	// Author holds the value of the "author" field.
	Author string `json:"author,omitempty"`
	// Description holds the value of the "description" field.
	Description string `json:"description,omitempty"`
	// Title holds the value of the "title" field.
	Title string `json:"title,omitempty"`
	// Edges holds the relations/edges for other nodes in the graph.
	// The values are being populated by the BookQuery when eager-loading is set.
	Edges BookEdges `json:"edges"`
	// contains filtered or unexported fields
}

Book is the model entity for the Book schema.

func (*Book) QueryCollection 

func (b *Book) QueryCollection() *CollectionQuery

QueryCollection queries the "collection" edge of the Book entity.

func (*Book) String 

func (b *Book) String() string

String implements the fmt.Stringer.

func (*Book) Unwrap 

func (b *Book) Unwrap() *Book

Unwrap unwraps the Book entity that was returned from a transaction after it was closed, so that all future queries will be executed through the driver which created the transaction.

func (*Book) Update 

func (b *Book) Update() *BookUpdateOne

Update returns a builder for updating this Book. Note that you need to call Book.Unwrap() before calling this method if this Book was returned from a transaction, and the transaction was committed or rolled back.

type BookClient 

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

BookClient is a client for the Book schema.

func NewBookClient 

func NewBookClient(c config) *BookClient

NewBookClient returns a client for the Book from the given config.

func (*BookClient) Create 

func (c *BookClient) Create() *BookCreate

Create returns a create builder for Book.

func (*BookClient) CreateBulk 

func (c *BookClient) CreateBulk(builders ...*BookCreate) *BookCreateBulk

CreateBulk returns a builder for creating a bulk of Book entities.

func (*BookClient) Delete 

func (c *BookClient) Delete() *BookDelete

Delete returns a delete builder for Book.

func (*BookClient) DeleteOne 

func (c *BookClient) DeleteOne(b *Book) *BookDeleteOne

DeleteOne returns a delete builder for the given entity.

func (*BookClient) DeleteOneID 

func (c *BookClient) DeleteOneID(id int) *BookDeleteOne

DeleteOneID returns a delete builder for the given id.

func (*BookClient) Get 

func (c *BookClient) Get(ctx context.Context, id int) (*Book, error)

Get returns a Book entity by its id.

func (*BookClient) GetX 

func (c *BookClient) GetX(ctx context.Context, id int) *Book

GetX is like Get, but panics if an error occurs.

func (*BookClient) Hooks 

func (c *BookClient) Hooks() []Hook

Hooks returns the client hooks.

func (*BookClient) Query 

func (c *BookClient) Query() *BookQuery

Query returns a query builder for Book.

func (*BookClient) QueryCollection 

func (c *BookClient) QueryCollection(b *Book) *CollectionQuery

QueryCollection queries the collection edge of a Book.

func (*BookClient) Update 

func (c *BookClient) Update() *BookUpdate

Update returns an update builder for Book.

func (*BookClient) UpdateOne 

func (c *BookClient) UpdateOne(b *Book) *BookUpdateOne

UpdateOne returns an update builder for the given entity.

func (*BookClient) UpdateOneID 

func (c *BookClient) UpdateOneID(id int) *BookUpdateOne

UpdateOneID returns an update builder for the given id.

func (*BookClient) Use 

func (c *BookClient) Use(hooks ...Hook)

Use adds a list of mutation hooks to the hooks stack. A call to `Use(f, g, h)` equals to `book.Hooks(f(g(h())))`.

type BookCreate 

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

BookCreate is the builder for creating a Book entity.

func (*BookCreate) AddCollection 

func (bc *BookCreate) AddCollection(c ...*Collection) *BookCreate

AddCollection adds the "collection" edges to the Collection entity.

func (*BookCreate) AddCollectionIDs 

func (bc *BookCreate) AddCollectionIDs(ids ...int) *BookCreate

AddCollectionIDs adds the "collection" edge to the Collection entity by IDs.

func (*BookCreate) Mutation 

func (bc *BookCreate) Mutation() *BookMutation

Mutation returns the BookMutation object of the builder.

func (*BookCreate) Save 

func (bc *BookCreate) Save(ctx context.Context) (*Book, error)

Save creates the Book in the database.

func (*BookCreate) SaveX 

func (bc *BookCreate) SaveX(ctx context.Context) *Book

SaveX calls Save and panics if Save returns an error.

func (*BookCreate) SetAuthor 

func (bc *BookCreate) SetAuthor(s string) *BookCreate

SetAuthor sets the "author" field.

func (*BookCreate) SetCreatedAt 

func (bc *BookCreate) SetCreatedAt(t time.Time) *BookCreate

SetCreatedAt sets the "createdAt" field.

func (*BookCreate) SetDescription 

func (bc *BookCreate) SetDescription(s string) *BookCreate

SetDescription sets the "description" field.

func (*BookCreate) SetNillableCreatedAt 

func (bc *BookCreate) SetNillableCreatedAt(t *time.Time) *BookCreate

SetNillableCreatedAt sets the "createdAt" field if the given value is not nil.

func (*BookCreate) SetNillableUpdatedat 

func (bc *BookCreate) SetNillableUpdatedat(t *time.Time) *BookCreate

SetNillableUpdatedat sets the "updatedat" field if the given value is not nil.

func (*BookCreate) SetTitle 

func (bc *BookCreate) SetTitle(s string) *BookCreate

SetTitle sets the "title" field.

func (*BookCreate) SetUpdatedat 

func (bc *BookCreate) SetUpdatedat(t time.Time) *BookCreate

SetUpdatedat sets the "updatedat" field.

type BookCreateBulk 

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

BookCreateBulk is the builder for creating many Book entities in bulk.

func (*BookCreateBulk) Save 

func (bcb *BookCreateBulk) Save(ctx context.Context) ([]*Book, error)

Save creates the Book entities in the database.

func (*BookCreateBulk) SaveX 

func (bcb *BookCreateBulk) SaveX(ctx context.Context) []*Book

SaveX is like Save, but panics if an error occurs.

type BookDelete 

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

BookDelete is the builder for deleting a Book entity.

func (*BookDelete) Exec 

func (bd *BookDelete) Exec(ctx context.Context) (int, error)

Exec executes the deletion query and returns how many vertices were deleted.

func (*BookDelete) ExecX 

func (bd *BookDelete) ExecX(ctx context.Context) int

ExecX is like Exec, but panics if an error occurs.

func (*BookDelete) Where 

func (bd *BookDelete) Where(ps ...predicate.Book) *BookDelete

Where adds a new predicate to the BookDelete builder.

type BookDeleteOne 

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

BookDeleteOne is the builder for deleting a single Book entity.

func (*BookDeleteOne) Exec 

func (bdo *BookDeleteOne) Exec(ctx context.Context) error

Exec executes the deletion query.

func (*BookDeleteOne) ExecX 

func (bdo *BookDeleteOne) ExecX(ctx context.Context)

ExecX is like Exec, but panics if an error occurs.

type BookEdges 

type BookEdges struct {
	// Collection holds the value of the collection edge.
	Collection []*Collection `json:"collection,omitempty"`
	// contains filtered or unexported fields
}

BookEdges holds the relations/edges for other nodes in the graph.

func (BookEdges) CollectionOrErr 

func (e BookEdges) CollectionOrErr() ([]*Collection, error)

CollectionOrErr returns the Collection value or an error if the edge was not loaded in eager-loading.

type BookGroupBy 

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

BookGroupBy is the group-by builder for Book entities.

func (*BookGroupBy) Aggregate 

func (bgb *BookGroupBy) Aggregate(fns ...AggregateFunc) *BookGroupBy

Aggregate adds the given aggregation functions to the group-by query.

func (*BookGroupBy) Bool 

func (bgb *BookGroupBy) Bool(ctx context.Context) (_ bool, err error)

Bool returns a single bool from a group-by query. It is only allowed when executing a group-by query with one field.

func (*BookGroupBy) BoolX 

func (bgb *BookGroupBy) BoolX(ctx context.Context) bool

BoolX is like Bool, but panics if an error occurs.

func (*BookGroupBy) Bools 

func (bgb *BookGroupBy) Bools(ctx context.Context) ([]bool, error)

Bools returns list of bools from group-by. It is only allowed when executing a group-by query with one field.

func (*BookGroupBy) BoolsX 

func (bgb *BookGroupBy) BoolsX(ctx context.Context) []bool

BoolsX is like Bools, but panics if an error occurs.

func (*BookGroupBy) Float64 

func (bgb *BookGroupBy) Float64(ctx context.Context) (_ float64, err error)

Float64 returns a single float64 from a group-by query. It is only allowed when executing a group-by query with one field.

func (*BookGroupBy) Float64X 

func (bgb *BookGroupBy) Float64X(ctx context.Context) float64

Float64X is like Float64, but panics if an error occurs.

func (*BookGroupBy) Float64s 

func (bgb *BookGroupBy) Float64s(ctx context.Context) ([]float64, error)

Float64s returns list of float64s from group-by. It is only allowed when executing a group-by query with one field.

func (*BookGroupBy) Float64sX 

func (bgb *BookGroupBy) Float64sX(ctx context.Context) []float64

Float64sX is like Float64s, but panics if an error occurs.

func (*BookGroupBy) Int 

func (bgb *BookGroupBy) Int(ctx context.Context) (_ int, err error)

Int returns a single int from a group-by query. It is only allowed when executing a group-by query with one field.

func (*BookGroupBy) IntX 

func (bgb *BookGroupBy) IntX(ctx context.Context) int

IntX is like Int, but panics if an error occurs.

func (*BookGroupBy) Ints 

func (bgb *BookGroupBy) Ints(ctx context.Context) ([]int, error)

Ints returns list of ints from group-by. It is only allowed when executing a group-by query with one field.

func (*BookGroupBy) IntsX 

func (bgb *BookGroupBy) IntsX(ctx context.Context) []int

IntsX is like Ints, but panics if an error occurs.

func (*BookGroupBy) Scan 

func (bgb *BookGroupBy) Scan(ctx context.Context, v interface{}) error

Scan applies the group-by query and scans the result into the given value.

func (*BookGroupBy) ScanX 

func (bgb *BookGroupBy) ScanX(ctx context.Context, v interface{})

ScanX is like Scan, but panics if an error occurs.

func (*BookGroupBy) String 

func (bgb *BookGroupBy) String(ctx context.Context) (_ string, err error)

String returns a single string from a group-by query. It is only allowed when executing a group-by query with one field.

func (*BookGroupBy) StringX 

func (bgb *BookGroupBy) StringX(ctx context.Context) string

StringX is like String, but panics if an error occurs.

func (*BookGroupBy) Strings 

func (bgb *BookGroupBy) Strings(ctx context.Context) ([]string, error)

Strings returns list of strings from group-by. It is only allowed when executing a group-by query with one field.

func (*BookGroupBy) StringsX 

func (bgb *BookGroupBy) StringsX(ctx context.Context) []string

StringsX is like Strings, but panics if an error occurs.

type BookMutation 

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

BookMutation represents an operation that mutates the Book nodes in the graph.

func (*BookMutation) AddCollectionIDs 

func (m *BookMutation) AddCollectionIDs(ids ...int)

AddCollectionIDs adds the "collection" edge to the Collection entity by ids.

func (*BookMutation) AddField 

func (m *BookMutation) AddField(name string, value ent.Value) error

AddField adds the value to the field with the given name. It returns an error if the field is not defined in the schema, or if the type mismatched the field type.

func (*BookMutation) AddedEdges 

func (m *BookMutation) AddedEdges() []string

AddedEdges returns all edge names that were set/added in this mutation.

func (*BookMutation) AddedField 

func (m *BookMutation) AddedField(name string) (ent.Value, bool)

AddedField returns the numeric value that was incremented/decremented on a field with the given name. The second boolean return value indicates that this field was not set, or was not defined in the schema.

func (*BookMutation) AddedFields 

func (m *BookMutation) AddedFields() []string

AddedFields returns all numeric fields that were incremented/decremented during this mutation.

func (*BookMutation) AddedIDs 

func (m *BookMutation) AddedIDs(name string) []ent.Value

AddedIDs returns all IDs (to other nodes) that were added for the given edge name in this mutation.

func (*BookMutation) Author 

func (m *BookMutation) Author() (r string, exists bool)

Author returns the value of the "author" field in the mutation.

func (*BookMutation) ClearCollection 

func (m *BookMutation) ClearCollection()

ClearCollection clears the "collection" edge to the Collection entity.

func (*BookMutation) ClearEdge 

func (m *BookMutation) ClearEdge(name string) error

ClearEdge clears the value of the edge with the given name. It returns an error if that edge is not defined in the schema.

func (*BookMutation) ClearField 

func (m *BookMutation) ClearField(name string) error

ClearField clears the value of the field with the given name. It returns an error if the field is not defined in the schema.

func (*BookMutation) ClearedEdges 

func (m *BookMutation) ClearedEdges() []string

ClearedEdges returns all edge names that were cleared in this mutation.

func (*BookMutation) ClearedFields 

func (m *BookMutation) ClearedFields() []string

ClearedFields returns all nullable fields that were cleared during this mutation.

func (BookMutation) Client 

func (m BookMutation) Client() *Client

Client returns a new `ent.Client` from the mutation. If the mutation was executed in a transaction (ent.Tx), a transactional client is returned.

func (*BookMutation) CollectionCleared 

func (m *BookMutation) CollectionCleared() bool

CollectionCleared returns if the "collection" edge to the Collection entity was cleared.

func (*BookMutation) CollectionIDs 

func (m *BookMutation) CollectionIDs() (ids []int)

CollectionIDs returns the "collection" edge IDs in the mutation.

func (*BookMutation) CreatedAt 

func (m *BookMutation) CreatedAt() (r time.Time, exists bool)

CreatedAt returns the value of the "createdAt" field in the mutation.

func (*BookMutation) Description 

func (m *BookMutation) Description() (r string, exists bool)

Description returns the value of the "description" field in the mutation.

func (*BookMutation) EdgeCleared 

func (m *BookMutation) EdgeCleared(name string) bool

EdgeCleared returns a boolean which indicates if the edge with the given name was cleared in this mutation.

func (*BookMutation) Field 

func (m *BookMutation) Field(name string) (ent.Value, bool)

Field returns the value of a field with the given name. The second boolean return value indicates that this field was not set, or was not defined in the schema.

func (*BookMutation) FieldCleared 

func (m *BookMutation) FieldCleared(name string) bool

FieldCleared returns a boolean indicating if a field with the given name was cleared in this mutation.

func (*BookMutation) Fields 

func (m *BookMutation) Fields() []string

Fields returns all fields that were changed during this mutation. Note that in order to get all numeric fields that were incremented/decremented, call AddedFields().

func (*BookMutation) ID 

func (m *BookMutation) ID() (id int, exists bool)

ID returns the ID value in the mutation. Note that the ID is only available if it was provided to the builder.

func (*BookMutation) OldAuthor 

func (m *BookMutation) OldAuthor(ctx context.Context) (v string, err error)

OldAuthor returns the old "author" field's value of the Book entity. If the Book object wasn't provided to the builder, the object is fetched from the database. An error is returned if the mutation operation is not UpdateOne, or the database query fails.

func (*BookMutation) OldCreatedAt 

func (m *BookMutation) OldCreatedAt(ctx context.Context) (v time.Time, err error)

OldCreatedAt returns the old "createdAt" field's value of the Book entity. If the Book object wasn't provided to the builder, the object is fetched from the database. An error is returned if the mutation operation is not UpdateOne, or the database query fails.

func (*BookMutation) OldDescription 

func (m *BookMutation) OldDescription(ctx context.Context) (v string, err error)

OldDescription returns the old "description" field's value of the Book entity. If the Book object wasn't provided to the builder, the object is fetched from the database. An error is returned if the mutation operation is not UpdateOne, or the database query fails.

func (*BookMutation) OldField 

func (m *BookMutation) OldField(ctx context.Context, name string) (ent.Value, error)

OldField returns the old value of the field from the database. An error is returned if the mutation operation is not UpdateOne, or the query to the database failed.

func (*BookMutation) OldTitle 

func (m *BookMutation) OldTitle(ctx context.Context) (v string, err error)

OldTitle returns the old "title" field's value of the Book entity. If the Book object wasn't provided to the builder, the object is fetched from the database. An error is returned if the mutation operation is not UpdateOne, or the database query fails.

func (*BookMutation) OldUpdatedat 

func (m *BookMutation) OldUpdatedat(ctx context.Context) (v time.Time, err error)

OldUpdatedat returns the old "updatedat" field's value of the Book entity. If the Book object wasn't provided to the builder, the object is fetched from the database. An error is returned if the mutation operation is not UpdateOne, or the database query fails.

func (*BookMutation) Op 

func (m *BookMutation) Op() Op

Op returns the operation name.

func (*BookMutation) RemoveCollectionIDs 

func (m *BookMutation) RemoveCollectionIDs(ids ...int)

RemoveCollectionIDs removes the "collection" edge to the Collection entity by IDs.

func (*BookMutation) RemovedCollectionIDs 

func (m *BookMutation) RemovedCollectionIDs() (ids []int)

RemovedCollection returns the removed IDs of the "collection" edge to the Collection entity.

func (*BookMutation) RemovedEdges 

func (m *BookMutation) RemovedEdges() []string

RemovedEdges returns all edge names that were removed in this mutation.

func (*BookMutation) RemovedIDs 

func (m *BookMutation) RemovedIDs(name string) []ent.Value

RemovedIDs returns all IDs (to other nodes) that were removed for the edge with the given name in this mutation.

func (*BookMutation) ResetAuthor 

func (m *BookMutation) ResetAuthor()

ResetAuthor resets all changes to the "author" field.

func (*BookMutation) ResetCollection 

func (m *BookMutation) ResetCollection()

ResetCollection resets all changes to the "collection" edge.

func (*BookMutation) ResetCreatedAt 

func (m *BookMutation) ResetCreatedAt()

ResetCreatedAt resets all changes to the "createdAt" field.

func (*BookMutation) ResetDescription 

func (m *BookMutation) ResetDescription()

ResetDescription resets all changes to the "description" field.

func (*BookMutation) ResetEdge 

func (m *BookMutation) ResetEdge(name string) error

ResetEdge resets all changes to the edge with the given name in this mutation. It returns an error if the edge is not defined in the schema.

func (*BookMutation) ResetField 

func (m *BookMutation) ResetField(name string) error

ResetField resets all changes in the mutation for the field with the given name. It returns an error if the field is not defined in the schema.

func (*BookMutation) ResetTitle 

func (m *BookMutation) ResetTitle()

ResetTitle resets all changes to the "title" field.

func (*BookMutation) ResetUpdatedat 

func (m *BookMutation) ResetUpdatedat()

ResetUpdatedat resets all changes to the "updatedat" field.

func (*BookMutation) SetAuthor 

func (m *BookMutation) SetAuthor(s string)

SetAuthor sets the "author" field.

func (*BookMutation) SetCreatedAt 

func (m *BookMutation) SetCreatedAt(t time.Time)

SetCreatedAt sets the "createdAt" field.

func (*BookMutation) SetDescription 

func (m *BookMutation) SetDescription(s string)

SetDescription sets the "description" field.

func (*BookMutation) SetField 

func (m *BookMutation) SetField(name string, value ent.Value) error

SetField sets the value of a field with the given name. It returns an error if the field is not defined in the schema, or if the type mismatched the field type.

func (*BookMutation) SetTitle 

func (m *BookMutation) SetTitle(s string)

SetTitle sets the "title" field.

func (*BookMutation) SetUpdatedat 

func (m *BookMutation) SetUpdatedat(t time.Time)

SetUpdatedat sets the "updatedat" field.

func (*BookMutation) Title 

func (m *BookMutation) Title() (r string, exists bool)

Title returns the value of the "title" field in the mutation.

func (BookMutation) Tx 

func (m BookMutation) Tx() (*Tx, error)

Tx returns an `ent.Tx` for mutations that were executed in transactions; it returns an error otherwise.

func (*BookMutation) Type 

func (m *BookMutation) Type() string

Type returns the node type of this mutation (Book).

func (*BookMutation) Updatedat 

func (m *BookMutation) Updatedat() (r time.Time, exists bool)

Updatedat returns the value of the "updatedat" field in the mutation.

type BookQuery 

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

BookQuery is the builder for querying Book entities.

func (*BookQuery) All 

func (bq *BookQuery) All(ctx context.Context) ([]*Book, error)

All executes the query and returns a list of Books.

func (*BookQuery) AllX 

func (bq *BookQuery) AllX(ctx context.Context) []*Book

AllX is like All, but panics if an error occurs.

func (*BookQuery) Clone 

func (bq *BookQuery) Clone() *BookQuery

Clone returns a duplicate of the BookQuery builder, including all associated steps. It can be used to prepare common query builders and use them differently after the clone is made.

func (*BookQuery) Count 

func (bq *BookQuery) Count(ctx context.Context) (int, error)

Count returns the count of the given query.

func (*BookQuery) CountX 

func (bq *BookQuery) CountX(ctx context.Context) int

CountX is like Count, but panics if an error occurs.

func (*BookQuery) Exist 

func (bq *BookQuery) Exist(ctx context.Context) (bool, error)

Exist returns true if the query has elements in the graph.

func (*BookQuery) ExistX 

func (bq *BookQuery) ExistX(ctx context.Context) bool

ExistX is like Exist, but panics if an error occurs.

func (*BookQuery) First 

func (bq *BookQuery) First(ctx context.Context) (*Book, error)

First returns the first Book entity from the query. Returns a *NotFoundError when no Book was found.

func (*BookQuery) FirstID 

func (bq *BookQuery) FirstID(ctx context.Context) (id int, err error)

FirstID returns the first Book ID from the query. Returns a *NotFoundError when no Book ID was found.

func (*BookQuery) FirstIDX 

func (bq *BookQuery) FirstIDX(ctx context.Context) int

FirstIDX is like FirstID, but panics if an error occurs.

func (*BookQuery) FirstX 

func (bq *BookQuery) FirstX(ctx context.Context) *Book

FirstX is like First, but panics if an error occurs.

func (*BookQuery) GroupBy 

func (bq *BookQuery) GroupBy(field string, fields ...string) *BookGroupBy

GroupBy is used to group vertices by one or more fields/columns. It is often used with aggregate functions, like: count, max, mean, min, sum.

Example: 

var v []struct {
	CreatedAt time.Time `json:"createdAt,omitempty"`
	Count int `json:"count,omitempty"`
}

client.Book.Query().
	GroupBy(book.FieldCreatedAt).
	Aggregate(ent.Count()).
	Scan(ctx, &v)

func (*BookQuery) IDs 

func (bq *BookQuery) IDs(ctx context.Context) ([]int, error)

IDs executes the query and returns a list of Book IDs.

func (*BookQuery) IDsX 

func (bq *BookQuery) IDsX(ctx context.Context) []int

IDsX is like IDs, but panics if an error occurs.

func (*BookQuery) Limit 

func (bq *BookQuery) Limit(limit int) *BookQuery

Limit adds a limit step to the query.

func (*BookQuery) Offset 

func (bq *BookQuery) Offset(offset int) *BookQuery

Offset adds an offset step to the query.

func (*BookQuery) Only 

func (bq *BookQuery) Only(ctx context.Context) (*Book, error)

Only returns a single Book entity found by the query, ensuring it only returns one. Returns a *NotSingularError when exactly one Book entity is not found. Returns a *NotFoundError when no Book entities are found.

func (*BookQuery) OnlyID 

func (bq *BookQuery) OnlyID(ctx context.Context) (id int, err error)

OnlyID is like Only, but returns the only Book ID in the query. Returns a *NotSingularError when exactly one Book ID is not found. Returns a *NotFoundError when no entities are found.

func (*BookQuery) OnlyIDX 

func (bq *BookQuery) OnlyIDX(ctx context.Context) int

OnlyIDX is like OnlyID, but panics if an error occurs.

func (*BookQuery) OnlyX 

func (bq *BookQuery) OnlyX(ctx context.Context) *Book

OnlyX is like Only, but panics if an error occurs.

func (*BookQuery) Order 

func (bq *BookQuery) Order(o ...OrderFunc) *BookQuery

Order adds an order step to the query.

func (*BookQuery) QueryCollection 

func (bq *BookQuery) QueryCollection() *CollectionQuery

QueryCollection chains the current query on the "collection" edge.

func (*BookQuery) Select 

func (bq *BookQuery) Select(field string, fields ...string) *BookSelect

Select allows the selection one or more fields/columns for the given query, instead of selecting all fields in the entity.

Example: 

var v []struct {
	CreatedAt time.Time `json:"createdAt,omitempty"`
}

client.Book.Query().
	Select(book.FieldCreatedAt).
	Scan(ctx, &v)

func (*BookQuery) Where 

func (bq *BookQuery) Where(ps ...predicate.Book) *BookQuery

Where adds a new predicate for the BookQuery builder.

func (*BookQuery) WithCollection 

func (bq *BookQuery) WithCollection(opts ...func(*CollectionQuery)) *BookQuery

WithCollection tells the query-builder to eager-load the nodes that are connected to the "collection" edge. The optional arguments are used to configure the query builder of the edge.

type BookSelect 

type BookSelect struct {
	*BookQuery
	// contains filtered or unexported fields
}

BookSelect is the builder for selecting fields of Book entities.

func (*BookSelect) Bool 

func (bs *BookSelect) Bool(ctx context.Context) (_ bool, err error)

Bool returns a single bool from a selector. It is only allowed when selecting one field.

func (*BookSelect) BoolX 

func (bs *BookSelect) BoolX(ctx context.Context) bool

BoolX is like Bool, but panics if an error occurs.

func (*BookSelect) Bools 

func (bs *BookSelect) Bools(ctx context.Context) ([]bool, error)

Bools returns list of bools from a selector. It is only allowed when selecting one field.

func (*BookSelect) BoolsX 

func (bs *BookSelect) BoolsX(ctx context.Context) []bool

BoolsX is like Bools, but panics if an error occurs.

func (*BookSelect) Float64 

func (bs *BookSelect) Float64(ctx context.Context) (_ float64, err error)

Float64 returns a single float64 from a selector. It is only allowed when selecting one field.

func (*BookSelect) Float64X 

func (bs *BookSelect) Float64X(ctx context.Context) float64

Float64X is like Float64, but panics if an error occurs.

func (*BookSelect) Float64s 

func (bs *BookSelect) Float64s(ctx context.Context) ([]float64, error)

Float64s returns list of float64s from a selector. It is only allowed when selecting one field.

func (*BookSelect) Float64sX 

func (bs *BookSelect) Float64sX(ctx context.Context) []float64

Float64sX is like Float64s, but panics if an error occurs.

func (*BookSelect) Int 

func (bs *BookSelect) Int(ctx context.Context) (_ int, err error)

Int returns a single int from a selector. It is only allowed when selecting one field.

func (*BookSelect) IntX 

func (bs *BookSelect) IntX(ctx context.Context) int

IntX is like Int, but panics if an error occurs.

func (*BookSelect) Ints 

func (bs *BookSelect) Ints(ctx context.Context) ([]int, error)

Ints returns list of ints from a selector. It is only allowed when selecting one field.

func (*BookSelect) IntsX 

func (bs *BookSelect) IntsX(ctx context.Context) []int

IntsX is like Ints, but panics if an error occurs.

func (*BookSelect) Scan 

func (bs *BookSelect) Scan(ctx context.Context, v interface{}) error

Scan applies the selector query and scans the result into the given value.

func (*BookSelect) ScanX 

func (bs *BookSelect) ScanX(ctx context.Context, v interface{})

ScanX is like Scan, but panics if an error occurs.

func (*BookSelect) String 

func (bs *BookSelect) String(ctx context.Context) (_ string, err error)

String returns a single string from a selector. It is only allowed when selecting one field.

func (*BookSelect) StringX 

func (bs *BookSelect) StringX(ctx context.Context) string

StringX is like String, but panics if an error occurs.

func (*BookSelect) Strings 

func (bs *BookSelect) Strings(ctx context.Context) ([]string, error)

Strings returns list of strings from a selector. It is only allowed when selecting one field.

func (*BookSelect) StringsX 

func (bs *BookSelect) StringsX(ctx context.Context) []string

StringsX is like Strings, but panics if an error occurs.

type BookUpdate 

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

BookUpdate is the builder for updating Book entities.

func (*BookUpdate) AddCollection 

func (bu *BookUpdate) AddCollection(c ...*Collection) *BookUpdate

AddCollection adds the "collection" edges to the Collection entity.

func (*BookUpdate) AddCollectionIDs 

func (bu *BookUpdate) AddCollectionIDs(ids ...int) *BookUpdate

AddCollectionIDs adds the "collection" edge to the Collection entity by IDs.

func (*BookUpdate) ClearCollection 

func (bu *BookUpdate) ClearCollection() *BookUpdate

ClearCollection clears all "collection" edges to the Collection entity.

func (*BookUpdate) Exec 

func (bu *BookUpdate) Exec(ctx context.Context) error

Exec executes the query.

func (*BookUpdate) ExecX 

func (bu *BookUpdate) ExecX(ctx context.Context)

ExecX is like Exec, but panics if an error occurs.

func (*BookUpdate) Mutation 

func (bu *BookUpdate) Mutation() *BookMutation

Mutation returns the BookMutation object of the builder.

func (*BookUpdate) RemoveCollection 

func (bu *BookUpdate) RemoveCollection(c ...*Collection) *BookUpdate

RemoveCollection removes "collection" edges to Collection entities.

func (*BookUpdate) RemoveCollectionIDs 

func (bu *BookUpdate) RemoveCollectionIDs(ids ...int) *BookUpdate

RemoveCollectionIDs removes the "collection" edge to Collection entities by IDs.

func (*BookUpdate) Save 

func (bu *BookUpdate) Save(ctx context.Context) (int, error)

Save executes the query and returns the number of nodes affected by the update operation.

func (*BookUpdate) SaveX 

func (bu *BookUpdate) SaveX(ctx context.Context) int

SaveX is like Save, but panics if an error occurs.

func (*BookUpdate) SetAuthor 

func (bu *BookUpdate) SetAuthor(s string) *BookUpdate

SetAuthor sets the "author" field.

func (*BookUpdate) SetCreatedAt 

func (bu *BookUpdate) SetCreatedAt(t time.Time) *BookUpdate

SetCreatedAt sets the "createdAt" field.

func (*BookUpdate) SetDescription 

func (bu *BookUpdate) SetDescription(s string) *BookUpdate

SetDescription sets the "description" field.

func (*BookUpdate) SetTitle 

func (bu *BookUpdate) SetTitle(s string) *BookUpdate

SetTitle sets the "title" field.

func (*BookUpdate) SetUpdatedat 

func (bu *BookUpdate) SetUpdatedat(t time.Time) *BookUpdate

SetUpdatedat sets the "updatedat" field.

func (*BookUpdate) Where 

func (bu *BookUpdate) Where(ps ...predicate.Book) *BookUpdate

Where adds a new predicate for the BookUpdate builder.

type BookUpdateOne 

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

BookUpdateOne is the builder for updating a single Book entity.

func (*BookUpdateOne) AddCollection 

func (buo *BookUpdateOne) AddCollection(c ...*Collection) *BookUpdateOne

AddCollection adds the "collection" edges to the Collection entity.

func (*BookUpdateOne) AddCollectionIDs 

func (buo *BookUpdateOne) AddCollectionIDs(ids ...int) *BookUpdateOne

AddCollectionIDs adds the "collection" edge to the Collection entity by IDs.

func (*BookUpdateOne) ClearCollection 

func (buo *BookUpdateOne) ClearCollection() *BookUpdateOne

ClearCollection clears all "collection" edges to the Collection entity.

func (*BookUpdateOne) Exec 

func (buo *BookUpdateOne) Exec(ctx context.Context) error

Exec executes the query on the entity.

func (*BookUpdateOne) ExecX 

func (buo *BookUpdateOne) ExecX(ctx context.Context)

ExecX is like Exec, but panics if an error occurs.

func (*BookUpdateOne) Mutation 

func (buo *BookUpdateOne) Mutation() *BookMutation

Mutation returns the BookMutation object of the builder.

func (*BookUpdateOne) RemoveCollection 

func (buo *BookUpdateOne) RemoveCollection(c ...*Collection) *BookUpdateOne

RemoveCollection removes "collection" edges to Collection entities.

func (*BookUpdateOne) RemoveCollectionIDs 

func (buo *BookUpdateOne) RemoveCollectionIDs(ids ...int) *BookUpdateOne

RemoveCollectionIDs removes the "collection" edge to Collection entities by IDs.

func (*BookUpdateOne) Save 

func (buo *BookUpdateOne) Save(ctx context.Context) (*Book, error)

Save executes the query and returns the updated Book entity.

func (*BookUpdateOne) SaveX 

func (buo *BookUpdateOne) SaveX(ctx context.Context) *Book

SaveX is like Save, but panics if an error occurs.

func (*BookUpdateOne) SetAuthor 

func (buo *BookUpdateOne) SetAuthor(s string) *BookUpdateOne

SetAuthor sets the "author" field.

func (*BookUpdateOne) SetCreatedAt 

func (buo *BookUpdateOne) SetCreatedAt(t time.Time) *BookUpdateOne

SetCreatedAt sets the "createdAt" field.

func (*BookUpdateOne) SetDescription 

func (buo *BookUpdateOne) SetDescription(s string) *BookUpdateOne

SetDescription sets the "description" field.

func (*BookUpdateOne) SetTitle 

func (buo *BookUpdateOne) SetTitle(s string) *BookUpdateOne

SetTitle sets the "title" field.

func (*BookUpdateOne) SetUpdatedat 

func (buo *BookUpdateOne) SetUpdatedat(t time.Time) *BookUpdateOne

SetUpdatedat sets the "updatedat" field.

type Books 

type Books []*Book

Books is a parsable slice of Book.

type Client 

type Client struct {

	// Schema is the client for creating, migrating and dropping schema.
	Schema *migrate.Schema
	// Book is the client for interacting with the Book builders.
	Book *BookClient
	// Collection is the client for interacting with the Collection builders.
	Collection *CollectionClient
	// contains filtered or unexported fields
}

Client is the client that holds all ent builders.

func FromContext 

func FromContext(ctx context.Context) *Client

FromContext returns a Client stored inside a context, or nil if there isn't one.

func NewClient 

func NewClient(opts ...Option) *Client

NewClient creates a new client configured with the given options.

func Open 

func Open(driverName, dataSourceName string, options ...Option) (*Client, error)

Open opens a database/sql.DB specified by the driver name and the data source name, and returns a new client attached to it. Optional parameters can be added for configuring the client.

func (*Client) BeginTx 

func (c *Client) BeginTx(ctx context.Context, opts *sql.TxOptions) (*Tx, error)

BeginTx returns a transactional client with specified options.

func (*Client) Close 

func (c *Client) Close() error

Close closes the database connection and prevents new queries from starting.

func (*Client) Debug 

func (c *Client) Debug() *Client

Debug returns a new debug-client. It's used to get verbose logging on specific operations. 

client.Debug().
	Book.
	Query().
	Count(ctx)

func (*Client) Tx 

func (c *Client) Tx(ctx context.Context) (*Tx, error)

Tx returns a new transactional client. The provided context is used until the transaction is committed or rolled back.

func (*Client) Use 

func (c *Client) Use(hooks ...Hook)

Use adds the mutation hooks to all the entity clients. In order to add hooks to a specific client, call: `client.Node.Use(...)`.

type Collection 

type Collection struct {

	// ID of the ent.
	ID int `json:"id,omitempty"`
	// CreatedAt holds the value of the "createdAt" field.
	CreatedAt time.Time `json:"createdAt,omitempty"`
	// Updatedat holds the value of the "updatedat" field.
	Updatedat time.Time `json:"updatedat,omitempty"`
	// Name holds the value of the "name" field.
	Name string `json:"name,omitempty"`
	// Edges holds the relations/edges for other nodes in the graph.
	// The values are being populated by the CollectionQuery when eager-loading is set.
	Edges CollectionEdges `json:"edges"`
	// contains filtered or unexported fields
}

Collection is the model entity for the Collection schema.

func (*Collection) QueryBooks 

func (c *Collection) QueryBooks() *BookQuery

QueryBooks queries the "books" edge of the Collection entity.

func (*Collection) String 

func (c *Collection) String() string

String implements the fmt.Stringer.

func (*Collection) Unwrap 

func (c *Collection) Unwrap() *Collection

Unwrap unwraps the Collection entity that was returned from a transaction after it was closed, so that all future queries will be executed through the driver which created the transaction.

func (*Collection) Update 

func (c *Collection) Update() *CollectionUpdateOne

Update returns a builder for updating this Collection. Note that you need to call Collection.Unwrap() before calling this method if this Collection was returned from a transaction, and the transaction was committed or rolled back.

type CollectionClient 

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

CollectionClient is a client for the Collection schema.

func NewCollectionClient 

func NewCollectionClient(c config) *CollectionClient

NewCollectionClient returns a client for the Collection from the given config.

func (*CollectionClient) Create 

func (c *CollectionClient) Create() *CollectionCreate

Create returns a create builder for Collection.

func (*CollectionClient) CreateBulk 

func (c *CollectionClient) CreateBulk(builders ...*CollectionCreate) *CollectionCreateBulk

CreateBulk returns a builder for creating a bulk of Collection entities.

func (*CollectionClient) Delete 

func (c *CollectionClient) Delete() *CollectionDelete

Delete returns a delete builder for Collection.

func (*CollectionClient) DeleteOne 

func (c *CollectionClient) DeleteOne(co *Collection) *CollectionDeleteOne

DeleteOne returns a delete builder for the given entity.

func (*CollectionClient) DeleteOneID 

func (c *CollectionClient) DeleteOneID(id int) *CollectionDeleteOne

DeleteOneID returns a delete builder for the given id.

func (*CollectionClient) Get 

func (c *CollectionClient) Get(ctx context.Context, id int) (*Collection, error)

Get returns a Collection entity by its id.

func (*CollectionClient) GetX 

func (c *CollectionClient) GetX(ctx context.Context, id int) *Collection

GetX is like Get, but panics if an error occurs.

func (*CollectionClient) Hooks 

func (c *CollectionClient) Hooks() []Hook

Hooks returns the client hooks.

func (*CollectionClient) Query 

func (c *CollectionClient) Query() *CollectionQuery

Query returns a query builder for Collection.

func (*CollectionClient) QueryBooks 

func (c *CollectionClient) QueryBooks(co *Collection) *BookQuery

QueryBooks queries the books edge of a Collection.

func (*CollectionClient) Update 

func (c *CollectionClient) Update() *CollectionUpdate

Update returns an update builder for Collection.

func (*CollectionClient) UpdateOne 

func (c *CollectionClient) UpdateOne(co *Collection) *CollectionUpdateOne

UpdateOne returns an update builder for the given entity.

func (*CollectionClient) UpdateOneID 

func (c *CollectionClient) UpdateOneID(id int) *CollectionUpdateOne

UpdateOneID returns an update builder for the given id.

func (*CollectionClient) Use 

func (c *CollectionClient) Use(hooks ...Hook)

Use adds a list of mutation hooks to the hooks stack. A call to `Use(f, g, h)` equals to `collection.Hooks(f(g(h())))`.

type CollectionCreate 

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

CollectionCreate is the builder for creating a Collection entity.

func (*CollectionCreate) AddBookIDs 

func (cc *CollectionCreate) AddBookIDs(ids ...int) *CollectionCreate

AddBookIDs adds the "books" edge to the Book entity by IDs.

func (*CollectionCreate) AddBooks 

func (cc *CollectionCreate) AddBooks(b ...*Book) *CollectionCreate

AddBooks adds the "books" edges to the Book entity.

func (*CollectionCreate) Mutation 

func (cc *CollectionCreate) Mutation() *CollectionMutation

Mutation returns the CollectionMutation object of the builder.

func (*CollectionCreate) Save 

func (cc *CollectionCreate) Save(ctx context.Context) (*Collection, error)

Save creates the Collection in the database.

func (*CollectionCreate) SaveX 

func (cc *CollectionCreate) SaveX(ctx context.Context) *Collection

SaveX calls Save and panics if Save returns an error.

func (*CollectionCreate) SetCreatedAt 

func (cc *CollectionCreate) SetCreatedAt(t time.Time) *CollectionCreate

SetCreatedAt sets the "createdAt" field.

func (*CollectionCreate) SetName 

func (cc *CollectionCreate) SetName(s string) *CollectionCreate

SetName sets the "name" field.

func (*CollectionCreate) SetNillableCreatedAt 

func (cc *CollectionCreate) SetNillableCreatedAt(t *time.Time) *CollectionCreate

SetNillableCreatedAt sets the "createdAt" field if the given value is not nil.

func (*CollectionCreate) SetNillableUpdatedat 

func (cc *CollectionCreate) SetNillableUpdatedat(t *time.Time) *CollectionCreate

SetNillableUpdatedat sets the "updatedat" field if the given value is not nil.

func (*CollectionCreate) SetUpdatedat 

func (cc *CollectionCreate) SetUpdatedat(t time.Time) *CollectionCreate

SetUpdatedat sets the "updatedat" field.

type CollectionCreateBulk 

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

CollectionCreateBulk is the builder for creating many Collection entities in bulk.

func (*CollectionCreateBulk) Save 

func (ccb *CollectionCreateBulk) Save(ctx context.Context) ([]*Collection, error)

Save creates the Collection entities in the database.

func (*CollectionCreateBulk) SaveX 

func (ccb *CollectionCreateBulk) SaveX(ctx context.Context) []*Collection

SaveX is like Save, but panics if an error occurs.

type CollectionDelete 

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

CollectionDelete is the builder for deleting a Collection entity.

func (*CollectionDelete) Exec 

func (cd *CollectionDelete) Exec(ctx context.Context) (int, error)

Exec executes the deletion query and returns how many vertices were deleted.

func (*CollectionDelete) ExecX 

func (cd *CollectionDelete) ExecX(ctx context.Context) int

ExecX is like Exec, but panics if an error occurs.

func (*CollectionDelete) Where 

func (cd *CollectionDelete) Where(ps ...predicate.Collection) *CollectionDelete

Where adds a new predicate to the CollectionDelete builder.

type CollectionDeleteOne 

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

CollectionDeleteOne is the builder for deleting a single Collection entity.

func (*CollectionDeleteOne) Exec 

func (cdo *CollectionDeleteOne) Exec(ctx context.Context) error

Exec executes the deletion query.

func (*CollectionDeleteOne) ExecX 

func (cdo *CollectionDeleteOne) ExecX(ctx context.Context)

ExecX is like Exec, but panics if an error occurs.

type CollectionEdges 

type CollectionEdges struct {
	// Books holds the value of the books edge.
	Books []*Book `json:"books,omitempty"`
	// contains filtered or unexported fields
}

CollectionEdges holds the relations/edges for other nodes in the graph.

func (CollectionEdges) BooksOrErr 

func (e CollectionEdges) BooksOrErr() ([]*Book, error)

BooksOrErr returns the Books value or an error if the edge was not loaded in eager-loading.

type CollectionGroupBy 

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

CollectionGroupBy is the group-by builder for Collection entities.

func (*CollectionGroupBy) Aggregate 

func (cgb *CollectionGroupBy) Aggregate(fns ...AggregateFunc) *CollectionGroupBy

Aggregate adds the given aggregation functions to the group-by query.

func (*CollectionGroupBy) Bool 

func (cgb *CollectionGroupBy) Bool(ctx context.Context) (_ bool, err error)

Bool returns a single bool from a group-by query. It is only allowed when executing a group-by query with one field.

func (*CollectionGroupBy) BoolX 

func (cgb *CollectionGroupBy) BoolX(ctx context.Context) bool

BoolX is like Bool, but panics if an error occurs.

func (*CollectionGroupBy) Bools 

func (cgb *CollectionGroupBy) Bools(ctx context.Context) ([]bool, error)

Bools returns list of bools from group-by. It is only allowed when executing a group-by query with one field.

func (*CollectionGroupBy) BoolsX 

func (cgb *CollectionGroupBy) BoolsX(ctx context.Context) []bool

BoolsX is like Bools, but panics if an error occurs.

func (*CollectionGroupBy) Float64 

func (cgb *CollectionGroupBy) Float64(ctx context.Context) (_ float64, err error)

Float64 returns a single float64 from a group-by query. It is only allowed when executing a group-by query with one field.

func (*CollectionGroupBy) Float64X 

func (cgb *CollectionGroupBy) Float64X(ctx context.Context) float64

Float64X is like Float64, but panics if an error occurs.

func (*CollectionGroupBy) Float64s 

func (cgb *CollectionGroupBy) Float64s(ctx context.Context) ([]float64, error)

Float64s returns list of float64s from group-by. It is only allowed when executing a group-by query with one field.

func (*CollectionGroupBy) Float64sX 

func (cgb *CollectionGroupBy) Float64sX(ctx context.Context) []float64

Float64sX is like Float64s, but panics if an error occurs.

func (*CollectionGroupBy) Int 

func (cgb *CollectionGroupBy) Int(ctx context.Context) (_ int, err error)

Int returns a single int from a group-by query. It is only allowed when executing a group-by query with one field.

func (*CollectionGroupBy) IntX 

func (cgb *CollectionGroupBy) IntX(ctx context.Context) int

IntX is like Int, but panics if an error occurs.

func (*CollectionGroupBy) Ints 

func (cgb *CollectionGroupBy) Ints(ctx context.Context) ([]int, error)

Ints returns list of ints from group-by. It is only allowed when executing a group-by query with one field.

func (*CollectionGroupBy) IntsX 

func (cgb *CollectionGroupBy) IntsX(ctx context.Context) []int

IntsX is like Ints, but panics if an error occurs.

func (*CollectionGroupBy) Scan 

func (cgb *CollectionGroupBy) Scan(ctx context.Context, v interface{}) error

Scan applies the group-by query and scans the result into the given value.

func (*CollectionGroupBy) ScanX 

func (cgb *CollectionGroupBy) ScanX(ctx context.Context, v interface{})

ScanX is like Scan, but panics if an error occurs.

func (*CollectionGroupBy) String 

func (cgb *CollectionGroupBy) String(ctx context.Context) (_ string, err error)

String returns a single string from a group-by query. It is only allowed when executing a group-by query with one field.

func (*CollectionGroupBy) StringX 

func (cgb *CollectionGroupBy) StringX(ctx context.Context) string

StringX is like String, but panics if an error occurs.

func (*CollectionGroupBy) Strings 

func (cgb *CollectionGroupBy) Strings(ctx context.Context) ([]string, error)

Strings returns list of strings from group-by. It is only allowed when executing a group-by query with one field.

func (*CollectionGroupBy) StringsX 

func (cgb *CollectionGroupBy) StringsX(ctx context.Context) []string

StringsX is like Strings, but panics if an error occurs.

type CollectionMutation 

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

CollectionMutation represents an operation that mutates the Collection nodes in the graph.

func (*CollectionMutation) AddBookIDs 

func (m *CollectionMutation) AddBookIDs(ids ...int)

AddBookIDs adds the "books" edge to the Book entity by ids.

func (*CollectionMutation) AddField 

func (m *CollectionMutation) AddField(name string, value ent.Value) error

AddField adds the value to the field with the given name. It returns an error if the field is not defined in the schema, or if the type mismatched the field type.

func (*CollectionMutation) AddedEdges 

func (m *CollectionMutation) AddedEdges() []string

AddedEdges returns all edge names that were set/added in this mutation.

func (*CollectionMutation) AddedField 

func (m *CollectionMutation) AddedField(name string) (ent.Value, bool)

AddedField returns the numeric value that was incremented/decremented on a field with the given name. The second boolean return value indicates that this field was not set, or was not defined in the schema.

func (*CollectionMutation) AddedFields 

func (m *CollectionMutation) AddedFields() []string

AddedFields returns all numeric fields that were incremented/decremented during this mutation.

func (*CollectionMutation) AddedIDs 

func (m *CollectionMutation) AddedIDs(name string) []ent.Value

AddedIDs returns all IDs (to other nodes) that were added for the given edge name in this mutation.

func (*CollectionMutation) BooksCleared 

func (m *CollectionMutation) BooksCleared() bool

BooksCleared returns if the "books" edge to the Book entity was cleared.

func (*CollectionMutation) BooksIDs 

func (m *CollectionMutation) BooksIDs() (ids []int)

BooksIDs returns the "books" edge IDs in the mutation.

func (*CollectionMutation) ClearBooks 

func (m *CollectionMutation) ClearBooks()

ClearBooks clears the "books" edge to the Book entity.

func (*CollectionMutation) ClearEdge 

func (m *CollectionMutation) ClearEdge(name string) error

ClearEdge clears the value of the edge with the given name. It returns an error if that edge is not defined in the schema.

func (*CollectionMutation) ClearField 

func (m *CollectionMutation) ClearField(name string) error

ClearField clears the value of the field with the given name. It returns an error if the field is not defined in the schema.

func (*CollectionMutation) ClearedEdges 

func (m *CollectionMutation) ClearedEdges() []string

ClearedEdges returns all edge names that were cleared in this mutation.

func (*CollectionMutation) ClearedFields 

func (m *CollectionMutation) ClearedFields() []string

ClearedFields returns all nullable fields that were cleared during this mutation.

func (CollectionMutation) Client 

func (m CollectionMutation) Client() *Client

Client returns a new `ent.Client` from the mutation. If the mutation was executed in a transaction (ent.Tx), a transactional client is returned.

func (*CollectionMutation) CreatedAt 

func (m *CollectionMutation) CreatedAt() (r time.Time, exists bool)

CreatedAt returns the value of the "createdAt" field in the mutation.

func (*CollectionMutation) EdgeCleared 

func (m *CollectionMutation) EdgeCleared(name string) bool

EdgeCleared returns a boolean which indicates if the edge with the given name was cleared in this mutation.

func (*CollectionMutation) Field 

func (m *CollectionMutation) Field(name string) (ent.Value, bool)

Field returns the value of a field with the given name. The second boolean return value indicates that this field was not set, or was not defined in the schema.

func (*CollectionMutation) FieldCleared 

func (m *CollectionMutation) FieldCleared(name string) bool

FieldCleared returns a boolean indicating if a field with the given name was cleared in this mutation.

func (*CollectionMutation) Fields 

func (m *CollectionMutation) Fields() []string

Fields returns all fields that were changed during this mutation. Note that in order to get all numeric fields that were incremented/decremented, call AddedFields().

func (*CollectionMutation) ID 

func (m *CollectionMutation) ID() (id int, exists bool)

ID returns the ID value in the mutation. Note that the ID is only available if it was provided to the builder.

func (*CollectionMutation) Name 

func (m *CollectionMutation) Name() (r string, exists bool)

Name returns the value of the "name" field in the mutation.

func (*CollectionMutation) OldCreatedAt 

func (m *CollectionMutation) OldCreatedAt(ctx context.Context) (v time.Time, err error)

OldCreatedAt returns the old "createdAt" field's value of the Collection entity. If the Collection object wasn't provided to the builder, the object is fetched from the database. An error is returned if the mutation operation is not UpdateOne, or the database query fails.

func (*CollectionMutation) OldField 

func (m *CollectionMutation) OldField(ctx context.Context, name string) (ent.Value, error)

OldField returns the old value of the field from the database. An error is returned if the mutation operation is not UpdateOne, or the query to the database failed.

func (*CollectionMutation) OldName 

func (m *CollectionMutation) OldName(ctx context.Context) (v string, err error)

OldName returns the old "name" field's value of the Collection entity. If the Collection object wasn't provided to the builder, the object is fetched from the database. An error is returned if the mutation operation is not UpdateOne, or the database query fails.

func (*CollectionMutation) OldUpdatedat 

func (m *CollectionMutation) OldUpdatedat(ctx context.Context) (v time.Time, err error)

OldUpdatedat returns the old "updatedat" field's value of the Collection entity. If the Collection object wasn't provided to the builder, the object is fetched from the database. An error is returned if the mutation operation is not UpdateOne, or the database query fails.

func (*CollectionMutation) Op 

func (m *CollectionMutation) Op() Op

Op returns the operation name.

func (*CollectionMutation) RemoveBookIDs 

func (m *CollectionMutation) RemoveBookIDs(ids ...int)

RemoveBookIDs removes the "books" edge to the Book entity by IDs.

func (*CollectionMutation) RemovedBooksIDs 

func (m *CollectionMutation) RemovedBooksIDs() (ids []int)

RemovedBooks returns the removed IDs of the "books" edge to the Book entity.

func (*CollectionMutation) RemovedEdges 

func (m *CollectionMutation) RemovedEdges() []string

RemovedEdges returns all edge names that were removed in this mutation.

func (*CollectionMutation) RemovedIDs 

func (m *CollectionMutation) RemovedIDs(name string) []ent.Value

RemovedIDs returns all IDs (to other nodes) that were removed for the edge with the given name in this mutation.

func (*CollectionMutation) ResetBooks 

func (m *CollectionMutation) ResetBooks()

ResetBooks resets all changes to the "books" edge.

func (*CollectionMutation) ResetCreatedAt 

func (m *CollectionMutation) ResetCreatedAt()

ResetCreatedAt resets all changes to the "createdAt" field.

func (*CollectionMutation) ResetEdge 

func (m *CollectionMutation) ResetEdge(name string) error

ResetEdge resets all changes to the edge with the given name in this mutation. It returns an error if the edge is not defined in the schema.

func (*CollectionMutation) ResetField 

func (m *CollectionMutation) ResetField(name string) error

ResetField resets all changes in the mutation for the field with the given name. It returns an error if the field is not defined in the schema.

func (*CollectionMutation) ResetName 

func (m *CollectionMutation) ResetName()

ResetName resets all changes to the "name" field.

func (*CollectionMutation) ResetUpdatedat 

func (m *CollectionMutation) ResetUpdatedat()

ResetUpdatedat resets all changes to the "updatedat" field.

func (*CollectionMutation) SetCreatedAt 

func (m *CollectionMutation) SetCreatedAt(t time.Time)

SetCreatedAt sets the "createdAt" field.

func (*CollectionMutation) SetField 

func (m *CollectionMutation) SetField(name string, value ent.Value) error

SetField sets the value of a field with the given name. It returns an error if the field is not defined in the schema, or if the type mismatched the field type.

func (*CollectionMutation) SetName 

func (m *CollectionMutation) SetName(s string)

SetName sets the "name" field.

func (*CollectionMutation) SetUpdatedat 

func (m *CollectionMutation) SetUpdatedat(t time.Time)

SetUpdatedat sets the "updatedat" field.

func (CollectionMutation) Tx 

func (m CollectionMutation) Tx() (*Tx, error)

Tx returns an `ent.Tx` for mutations that were executed in transactions; it returns an error otherwise.

func (*CollectionMutation) Type 

func (m *CollectionMutation) Type() string

Type returns the node type of this mutation (Collection).

func (*CollectionMutation) Updatedat 

func (m *CollectionMutation) Updatedat() (r time.Time, exists bool)

Updatedat returns the value of the "updatedat" field in the mutation.

type CollectionQuery 

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

CollectionQuery is the builder for querying Collection entities.

func (*CollectionQuery) All 

func (cq *CollectionQuery) All(ctx context.Context) ([]*Collection, error)

All executes the query and returns a list of Collections.

func (*CollectionQuery) AllX 

func (cq *CollectionQuery) AllX(ctx context.Context) []*Collection

AllX is like All, but panics if an error occurs.

func (*CollectionQuery) Clone 

func (cq *CollectionQuery) Clone() *CollectionQuery

Clone returns a duplicate of the CollectionQuery builder, including all associated steps. It can be used to prepare common query builders and use them differently after the clone is made.

func (*CollectionQuery) Count 

func (cq *CollectionQuery) Count(ctx context.Context) (int, error)

Count returns the count of the given query.

func (*CollectionQuery) CountX 

func (cq *CollectionQuery) CountX(ctx context.Context) int

CountX is like Count, but panics if an error occurs.

func (*CollectionQuery) Exist 

func (cq *CollectionQuery) Exist(ctx context.Context) (bool, error)

Exist returns true if the query has elements in the graph.

func (*CollectionQuery) ExistX 

func (cq *CollectionQuery) ExistX(ctx context.Context) bool

ExistX is like Exist, but panics if an error occurs.

func (*CollectionQuery) First 

func (cq *CollectionQuery) First(ctx context.Context) (*Collection, error)

First returns the first Collection entity from the query. Returns a *NotFoundError when no Collection was found.

func (*CollectionQuery) FirstID 

func (cq *CollectionQuery) FirstID(ctx context.Context) (id int, err error)

FirstID returns the first Collection ID from the query. Returns a *NotFoundError when no Collection ID was found.

func (*CollectionQuery) FirstIDX 

func (cq *CollectionQuery) FirstIDX(ctx context.Context) int

FirstIDX is like FirstID, but panics if an error occurs.

func (*CollectionQuery) FirstX 

func (cq *CollectionQuery) FirstX(ctx context.Context) *Collection

FirstX is like First, but panics if an error occurs.

func (*CollectionQuery) GroupBy 

func (cq *CollectionQuery) GroupBy(field string, fields ...string) *CollectionGroupBy

GroupBy is used to group vertices by one or more fields/columns. It is often used with aggregate functions, like: count, max, mean, min, sum.

Example: 

var v []struct {
	CreatedAt time.Time `json:"createdAt,omitempty"`
	Count int `json:"count,omitempty"`
}

client.Collection.Query().
	GroupBy(collection.FieldCreatedAt).
	Aggregate(ent.Count()).
	Scan(ctx, &v)

func (*CollectionQuery) IDs 

func (cq *CollectionQuery) IDs(ctx context.Context) ([]int, error)

IDs executes the query and returns a list of Collection IDs.

func (*CollectionQuery) IDsX 

func (cq *CollectionQuery) IDsX(ctx context.Context) []int

IDsX is like IDs, but panics if an error occurs.

func (*CollectionQuery) Limit 

func (cq *CollectionQuery) Limit(limit int) *CollectionQuery

Limit adds a limit step to the query.

func (*CollectionQuery) Offset 

func (cq *CollectionQuery) Offset(offset int) *CollectionQuery

Offset adds an offset step to the query.

func (*CollectionQuery) Only 

func (cq *CollectionQuery) Only(ctx context.Context) (*Collection, error)

Only returns a single Collection entity found by the query, ensuring it only returns one. Returns a *NotSingularError when exactly one Collection entity is not found. Returns a *NotFoundError when no Collection entities are found.

func (*CollectionQuery) OnlyID 

func (cq *CollectionQuery) OnlyID(ctx context.Context) (id int, err error)

OnlyID is like Only, but returns the only Collection ID in the query. Returns a *NotSingularError when exactly one Collection ID is not found. Returns a *NotFoundError when no entities are found.

func (*CollectionQuery) OnlyIDX 

func (cq *CollectionQuery) OnlyIDX(ctx context.Context) int

OnlyIDX is like OnlyID, but panics if an error occurs.

func (*CollectionQuery) OnlyX 

func (cq *CollectionQuery) OnlyX(ctx context.Context) *Collection

OnlyX is like Only, but panics if an error occurs.

func (*CollectionQuery) Order 

func (cq *CollectionQuery) Order(o ...OrderFunc) *CollectionQuery

Order adds an order step to the query.

func (*CollectionQuery) QueryBooks 

func (cq *CollectionQuery) QueryBooks() *BookQuery

QueryBooks chains the current query on the "books" edge.

func (*CollectionQuery) Select 

func (cq *CollectionQuery) Select(field string, fields ...string) *CollectionSelect

Select allows the selection one or more fields/columns for the given query, instead of selecting all fields in the entity.

Example: 

var v []struct {
	CreatedAt time.Time `json:"createdAt,omitempty"`
}

client.Collection.Query().
	Select(collection.FieldCreatedAt).
	Scan(ctx, &v)

func (*CollectionQuery) Where 

func (cq *CollectionQuery) Where(ps ...predicate.Collection) *CollectionQuery

Where adds a new predicate for the CollectionQuery builder.

func (*CollectionQuery) WithBooks 

func (cq *CollectionQuery) WithBooks(opts ...func(*BookQuery)) *CollectionQuery

WithBooks tells the query-builder to eager-load the nodes that are connected to the "books" edge. The optional arguments are used to configure the query builder of the edge.

type CollectionSelect 

type CollectionSelect struct {
	*CollectionQuery
	// contains filtered or unexported fields
}

CollectionSelect is the builder for selecting fields of Collection entities.

func (*CollectionSelect) Bool 

func (cs *CollectionSelect) Bool(ctx context.Context) (_ bool, err error)

Bool returns a single bool from a selector. It is only allowed when selecting one field.

func (*CollectionSelect) BoolX 

func (cs *CollectionSelect) BoolX(ctx context.Context) bool

BoolX is like Bool, but panics if an error occurs.

func (*CollectionSelect) Bools 

func (cs *CollectionSelect) Bools(ctx context.Context) ([]bool, error)

Bools returns list of bools from a selector. It is only allowed when selecting one field.

func (*CollectionSelect) BoolsX 

func (cs *CollectionSelect) BoolsX(ctx context.Context) []bool

BoolsX is like Bools, but panics if an error occurs.

func (*CollectionSelect) Float64 

func (cs *CollectionSelect) Float64(ctx context.Context) (_ float64, err error)

Float64 returns a single float64 from a selector. It is only allowed when selecting one field.

func (*CollectionSelect) Float64X 

func (cs *CollectionSelect) Float64X(ctx context.Context) float64

Float64X is like Float64, but panics if an error occurs.

func (*CollectionSelect) Float64s 

func (cs *CollectionSelect) Float64s(ctx context.Context) ([]float64, error)

Float64s returns list of float64s from a selector. It is only allowed when selecting one field.

func (*CollectionSelect) Float64sX 

func (cs *CollectionSelect) Float64sX(ctx context.Context) []float64

Float64sX is like Float64s, but panics if an error occurs.

func (*CollectionSelect) Int 

func (cs *CollectionSelect) Int(ctx context.Context) (_ int, err error)

Int returns a single int from a selector. It is only allowed when selecting one field.

func (*CollectionSelect) IntX 

func (cs *CollectionSelect) IntX(ctx context.Context) int

IntX is like Int, but panics if an error occurs.

func (*CollectionSelect) Ints 

func (cs *CollectionSelect) Ints(ctx context.Context) ([]int, error)

Ints returns list of ints from a selector. It is only allowed when selecting one field.

func (*CollectionSelect) IntsX 

func (cs *CollectionSelect) IntsX(ctx context.Context) []int

IntsX is like Ints, but panics if an error occurs.

func (*CollectionSelect) Scan 

func (cs *CollectionSelect) Scan(ctx context.Context, v interface{}) error

Scan applies the selector query and scans the result into the given value.

func (*CollectionSelect) ScanX 

func (cs *CollectionSelect) ScanX(ctx context.Context, v interface{})

ScanX is like Scan, but panics if an error occurs.

func (*CollectionSelect) String 

func (cs *CollectionSelect) String(ctx context.Context) (_ string, err error)

String returns a single string from a selector. It is only allowed when selecting one field.

func (*CollectionSelect) StringX 

func (cs *CollectionSelect) StringX(ctx context.Context) string

StringX is like String, but panics if an error occurs.

func (*CollectionSelect) Strings 

func (cs *CollectionSelect) Strings(ctx context.Context) ([]string, error)

Strings returns list of strings from a selector. It is only allowed when selecting one field.

func (*CollectionSelect) StringsX 

func (cs *CollectionSelect) StringsX(ctx context.Context) []string

StringsX is like Strings, but panics if an error occurs.

type CollectionUpdate 

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

CollectionUpdate is the builder for updating Collection entities.

func (*CollectionUpdate) AddBookIDs 

func (cu *CollectionUpdate) AddBookIDs(ids ...int) *CollectionUpdate

AddBookIDs adds the "books" edge to the Book entity by IDs.

func (*CollectionUpdate) AddBooks 

func (cu *CollectionUpdate) AddBooks(b ...*Book) *CollectionUpdate

AddBooks adds the "books" edges to the Book entity.

func (*CollectionUpdate) ClearBooks 

func (cu *CollectionUpdate) ClearBooks() *CollectionUpdate

ClearBooks clears all "books" edges to the Book entity.

func (*CollectionUpdate) Exec 

func (cu *CollectionUpdate) Exec(ctx context.Context) error

Exec executes the query.

func (*CollectionUpdate) ExecX 

func (cu *CollectionUpdate) ExecX(ctx context.Context)

ExecX is like Exec, but panics if an error occurs.

func (*CollectionUpdate) Mutation 

func (cu *CollectionUpdate) Mutation() *CollectionMutation

Mutation returns the CollectionMutation object of the builder.

func (*CollectionUpdate) RemoveBookIDs 

func (cu *CollectionUpdate) RemoveBookIDs(ids ...int) *CollectionUpdate

RemoveBookIDs removes the "books" edge to Book entities by IDs.

func (*CollectionUpdate) RemoveBooks 

func (cu *CollectionUpdate) RemoveBooks(b ...*Book) *CollectionUpdate

RemoveBooks removes "books" edges to Book entities.

func (*CollectionUpdate) Save 

func (cu *CollectionUpdate) Save(ctx context.Context) (int, error)

Save executes the query and returns the number of nodes affected by the update operation.

func (*CollectionUpdate) SaveX 

func (cu *CollectionUpdate) SaveX(ctx context.Context) int

SaveX is like Save, but panics if an error occurs.

func (*CollectionUpdate) SetCreatedAt 

func (cu *CollectionUpdate) SetCreatedAt(t time.Time) *CollectionUpdate

SetCreatedAt sets the "createdAt" field.

func (*CollectionUpdate) SetName 

func (cu *CollectionUpdate) SetName(s string) *CollectionUpdate

SetName sets the "name" field.

func (*CollectionUpdate) SetUpdatedat 

func (cu *CollectionUpdate) SetUpdatedat(t time.Time) *CollectionUpdate

SetUpdatedat sets the "updatedat" field.

func (*CollectionUpdate) Where 

func (cu *CollectionUpdate) Where(ps ...predicate.Collection) *CollectionUpdate

Where adds a new predicate for the CollectionUpdate builder.

type CollectionUpdateOne 

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

CollectionUpdateOne is the builder for updating a single Collection entity.

func (*CollectionUpdateOne) AddBookIDs 

func (cuo *CollectionUpdateOne) AddBookIDs(ids ...int) *CollectionUpdateOne

AddBookIDs adds the "books" edge to the Book entity by IDs.

func (*CollectionUpdateOne) AddBooks 

func (cuo *CollectionUpdateOne) AddBooks(b ...*Book) *CollectionUpdateOne

AddBooks adds the "books" edges to the Book entity.

func (*CollectionUpdateOne) ClearBooks 

func (cuo *CollectionUpdateOne) ClearBooks() *CollectionUpdateOne

ClearBooks clears all "books" edges to the Book entity.

func (*CollectionUpdateOne) Exec 

func (cuo *CollectionUpdateOne) Exec(ctx context.Context) error

Exec executes the query on the entity.

func (*CollectionUpdateOne) ExecX 

func (cuo *CollectionUpdateOne) ExecX(ctx context.Context)

ExecX is like Exec, but panics if an error occurs.

func (*CollectionUpdateOne) Mutation 

func (cuo *CollectionUpdateOne) Mutation() *CollectionMutation

Mutation returns the CollectionMutation object of the builder.

func (*CollectionUpdateOne) RemoveBookIDs 

func (cuo *CollectionUpdateOne) RemoveBookIDs(ids ...int) *CollectionUpdateOne

RemoveBookIDs removes the "books" edge to Book entities by IDs.

func (*CollectionUpdateOne) RemoveBooks 

func (cuo *CollectionUpdateOne) RemoveBooks(b ...*Book) *CollectionUpdateOne

RemoveBooks removes "books" edges to Book entities.

func (*CollectionUpdateOne) Save 

func (cuo *CollectionUpdateOne) Save(ctx context.Context) (*Collection, error)

Save executes the query and returns the updated Collection entity.

func (*CollectionUpdateOne) SaveX 

func (cuo *CollectionUpdateOne) SaveX(ctx context.Context) *Collection

SaveX is like Save, but panics if an error occurs.

func (*CollectionUpdateOne) SetCreatedAt 

func (cuo *CollectionUpdateOne) SetCreatedAt(t time.Time) *CollectionUpdateOne

SetCreatedAt sets the "createdAt" field.

func (*CollectionUpdateOne) SetName 

func (cuo *CollectionUpdateOne) SetName(s string) *CollectionUpdateOne

SetName sets the "name" field.

func (*CollectionUpdateOne) SetUpdatedat 

func (cuo *CollectionUpdateOne) SetUpdatedat(t time.Time) *CollectionUpdateOne

SetUpdatedat sets the "updatedat" field.

type Collections 

type Collections []*Collection

Collections is a parsable slice of Collection.

type CommitFunc 

type CommitFunc func(context.Context, *Tx) error

The CommitFunc type is an adapter to allow the use of ordinary function as a Committer. If f is a function with the appropriate signature, CommitFunc(f) is a Committer that calls f.

func (CommitFunc) Commit 

func (f CommitFunc) Commit(ctx context.Context, tx *Tx) error

Commit calls f(ctx, m).

type CommitHook 

type CommitHook func(Committer) Committer

CommitHook defines the "commit middleware". A function that gets a Committer and returns a Committer. For example: 

hook := func(next ent.Committer) ent.Committer {
	return ent.CommitFunc(func(context.Context, tx *ent.Tx) error {
		// Do some stuff before.
		if err := next.Commit(ctx, tx); err != nil {
			return err
		}
		// Do some stuff after.
		return nil
	})
}

type Committer 

type Committer interface {
	Commit(context.Context, *Tx) error
}

Committer is the interface that wraps the Committer method.

type ConstraintError 

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

ConstraintError returns when trying to create/update one or more entities and one or more of their constraints failed. For example, violation of edge or field uniqueness.

func (ConstraintError) Error 

func (e ConstraintError) Error() string

Error implements the error interface.

func (*ConstraintError) Unwrap 

func (e *ConstraintError) Unwrap() error

Unwrap implements the errors.Wrapper interface.

type Hook 

type Hook = ent.Hook

ent aliases to avoid import conflicts in user's code.

type MutateFunc 

type MutateFunc = ent.MutateFunc

ent aliases to avoid import conflicts in user's code.

type Mutation 

type Mutation = ent.Mutation

ent aliases to avoid import conflicts in user's code.

type Mutator 

type Mutator = ent.Mutator

ent aliases to avoid import conflicts in user's code.

type NotFoundError 

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

NotFoundError returns when trying to fetch a specific entity and it was not found in the database.

func (*NotFoundError) Error 

func (e *NotFoundError) Error() string

Error implements the error interface.

type NotLoadedError 

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

NotLoadedError returns when trying to get a node that was not loaded by the query.

func (*NotLoadedError) Error 

func (e *NotLoadedError) Error() string

Error implements the error interface.

type NotSingularError 

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

NotSingularError returns when trying to fetch a singular entity and more then one was found in the database.

func (*NotSingularError) Error 

func (e *NotSingularError) Error() string

Error implements the error interface.

type Op 

type Op = ent.Op

ent aliases to avoid import conflicts in user's code.

type Option 

type Option func(*config)

Option function to configure the client.

func Debug 

func Debug() Option

Debug enables debug logging on the ent.Driver.

func Driver 

func Driver(driver dialect.Driver) Option

Driver configures the client driver.

func Log 

func Log(fn func(...interface{})) Option

Log sets the logging function for debug mode.

type OrderFunc 

type OrderFunc func(*sql.Selector, func(string) bool)

OrderFunc applies an ordering on the sql selector.

func Asc 

func Asc(fields ...string) OrderFunc

Asc applies the given fields in ASC order.

func Desc 

func Desc(fields ...string) OrderFunc

Desc applies the given fields in DESC order.

type Policy 

type Policy = ent.Policy

ent aliases to avoid import conflicts in user's code.

type Query 

type Query = ent.Query

ent aliases to avoid import conflicts in user's code.

type RollbackFunc 

type RollbackFunc func(context.Context, *Tx) error

The RollbackFunc type is an adapter to allow the use of ordinary function as a Rollbacker. If f is a function with the appropriate signature, RollbackFunc(f) is a Rollbacker that calls f.

func (RollbackFunc) Rollback 

func (f RollbackFunc) Rollback(ctx context.Context, tx *Tx) error

Rollback calls f(ctx, m).

type RollbackHook 

type RollbackHook func(Rollbacker) Rollbacker

RollbackHook defines the "rollback middleware". A function that gets a Rollbacker and returns a Rollbacker. For example: 

hook := func(next ent.Rollbacker) ent.Rollbacker {
	return ent.RollbackFunc(func(context.Context, tx *ent.Tx) error {
		// Do some stuff before.
		if err := next.Rollback(ctx, tx); err != nil {
			return err
		}
		// Do some stuff after.
		return nil
	})
}

type Rollbacker 

type Rollbacker interface {
	Rollback(context.Context, *Tx) error
}

Rollbacker is the interface that wraps the Rollbacker method.

type Tx 

type Tx struct {

	// Book is the client for interacting with the Book builders.
	Book *BookClient
	// Collection is the client for interacting with the Collection builders.
	Collection *CollectionClient
	// contains filtered or unexported fields
}

Tx is a transactional client that is created by calling Client.Tx().

func TxFromContext 

func TxFromContext(ctx context.Context) *Tx

TxFromContext returns a Tx stored inside a context, or nil if there isn't one.

func (*Tx) Client 

func (tx *Tx) Client() *Client

Client returns a Client that binds to current transaction.

func (*Tx) Commit 

func (tx *Tx) Commit() error

Commit commits the transaction.

func (*Tx) OnCommit 

func (tx *Tx) OnCommit(f CommitHook)

OnCommit adds a hook to call on commit.

func (*Tx) OnRollback 

func (tx *Tx) OnRollback(f RollbackHook)

OnRollback adds a hook to call on rollback.

func (*Tx) Rollback 

func (tx *Tx) Rollback() error

Rollback rollbacks the transaction.

type ValidationError 

type ValidationError struct {
	Name string // Field or edge name.
	// contains filtered or unexported fields
}

ValidationError returns when validating a field fails.

func (*ValidationError) Error 

func (e *ValidationError) Error() string

Error implements the error interface.

func (*ValidationError) Unwrap 

func (e *ValidationError) Unwrap() error

Unwrap implements the errors.Wrapper interface.

type Value 

type Value = ent.Value

ent aliases to avoid import conflicts in user's code.

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