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client.go
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client.go
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// Copyright 2019-present Facebook Inc. All rights reserved.
// This source code is licensed under the Apache 2.0 license found
// in the LICENSE file in the root directory of this source tree.
// Code generated by entc, DO NOT EDIT.
package ent
import (
"context"
"fmt"
"log"
"github.com/facebook/ent/examples/entcpkg/ent/migrate"
"github.com/facebook/ent/examples/entcpkg/ent/user"
"github.com/facebook/ent/dialect"
"github.com/facebook/ent/dialect/sql"
)
// Client is the client that holds all ent builders.
type Client struct {
config
// Schema is the client for creating, migrating and dropping schema.
Schema *migrate.Schema
// User is the client for interacting with the User builders.
User *UserClient
}
// NewClient creates a new client configured with the given options.
func NewClient(opts ...Option) *Client {
cfg := config{log: log.Println, hooks: &hooks{}}
cfg.options(opts...)
client := &Client{config: cfg}
client.init()
return client
}
func (c *Client) init() {
c.Schema = migrate.NewSchema(c.driver)
c.User = NewUserClient(c.config)
}
// 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 Open(driverName, dataSourceName string, options ...Option) (*Client, error) {
switch driverName {
case dialect.MySQL, dialect.Postgres, dialect.SQLite:
drv, err := sql.Open(driverName, dataSourceName)
if err != nil {
return nil, err
}
return NewClient(append(options, Driver(drv))...), nil
default:
return nil, fmt.Errorf("unsupported driver: %q", driverName)
}
}
// Tx returns a new transactional client. The provided context
// is used until the transaction is committed or rolled back.
func (c *Client) Tx(ctx context.Context) (*Tx, error) {
if _, ok := c.driver.(*txDriver); ok {
return nil, fmt.Errorf("ent: cannot start a transaction within a transaction")
}
tx, err := newTx(ctx, c.driver)
if err != nil {
return nil, fmt.Errorf("ent: starting a transaction: %v", err)
}
cfg := config{driver: tx, log: c.log, debug: c.debug, hooks: c.hooks}
return &Tx{
ctx: ctx,
config: cfg,
User: NewUserClient(cfg),
}, nil
}
// BeginTx returns a transactional client with options.
func (c *Client) BeginTx(ctx context.Context, opts *sql.TxOptions) (*Tx, error) {
if _, ok := c.driver.(*txDriver); ok {
return nil, fmt.Errorf("ent: cannot start a transaction within a transaction")
}
tx, err := c.driver.(*sql.Driver).BeginTx(ctx, opts)
if err != nil {
return nil, fmt.Errorf("ent: starting a transaction: %v", err)
}
cfg := config{driver: &txDriver{tx: tx, drv: c.driver}, log: c.log, debug: c.debug, hooks: c.hooks}
return &Tx{
config: cfg,
User: NewUserClient(cfg),
}, nil
}
// Debug returns a new debug-client. It's used to get verbose logging on specific operations.
//
// client.Debug().
// User.
// Query().
// Count(ctx)
//
func (c *Client) Debug() *Client {
if c.debug {
return c
}
cfg := config{driver: dialect.Debug(c.driver, c.log), log: c.log, debug: true, hooks: c.hooks}
client := &Client{config: cfg}
client.init()
return client
}
// Close closes the database connection and prevents new queries from starting.
func (c *Client) Close() error {
return c.driver.Close()
}
// Use adds the mutation hooks to all the entity clients.
// In order to add hooks to a specific client, call: `client.Node.Use(...)`.
func (c *Client) Use(hooks ...Hook) {
c.User.Use(hooks...)
}
// UserClient is a client for the User schema.
type UserClient struct {
config
}
// NewUserClient returns a client for the User from the given config.
func NewUserClient(c config) *UserClient {
return &UserClient{config: c}
}
// Use adds a list of mutation hooks to the hooks stack.
// A call to `Use(f, g, h)` equals to `user.Hooks(f(g(h())))`.
func (c *UserClient) Use(hooks ...Hook) {
c.hooks.User = append(c.hooks.User, hooks...)
}
// Create returns a create builder for User.
func (c *UserClient) Create() *UserCreate {
mutation := newUserMutation(c.config, OpCreate)
return &UserCreate{config: c.config, hooks: c.Hooks(), mutation: mutation}
}
// CreateBulk returns a builder for creating a bulk of User entities.
func (c *UserClient) CreateBulk(builders ...*UserCreate) *UserCreateBulk {
return &UserCreateBulk{config: c.config, builders: builders}
}
// Update returns an update builder for User.
func (c *UserClient) Update() *UserUpdate {
mutation := newUserMutation(c.config, OpUpdate)
return &UserUpdate{config: c.config, hooks: c.Hooks(), mutation: mutation}
}
// UpdateOne returns an update builder for the given entity.
func (c *UserClient) UpdateOne(u *User) *UserUpdateOne {
mutation := newUserMutation(c.config, OpUpdateOne, withUser(u))
return &UserUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
}
// UpdateOneID returns an update builder for the given id.
func (c *UserClient) UpdateOneID(id int) *UserUpdateOne {
mutation := newUserMutation(c.config, OpUpdateOne, withUserID(id))
return &UserUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
}
// Delete returns a delete builder for User.
func (c *UserClient) Delete() *UserDelete {
mutation := newUserMutation(c.config, OpDelete)
return &UserDelete{config: c.config, hooks: c.Hooks(), mutation: mutation}
}
// DeleteOne returns a delete builder for the given entity.
func (c *UserClient) DeleteOne(u *User) *UserDeleteOne {
return c.DeleteOneID(u.ID)
}
// DeleteOneID returns a delete builder for the given id.
func (c *UserClient) DeleteOneID(id int) *UserDeleteOne {
builder := c.Delete().Where(user.ID(id))
builder.mutation.id = &id
builder.mutation.op = OpDeleteOne
return &UserDeleteOne{builder}
}
// Query returns a query builder for User.
func (c *UserClient) Query() *UserQuery {
return &UserQuery{config: c.config}
}
// Get returns a User entity by its id.
func (c *UserClient) Get(ctx context.Context, id int) (*User, error) {
return c.Query().Where(user.ID(id)).Only(ctx)
}
// GetX is like Get, but panics if an error occurs.
func (c *UserClient) GetX(ctx context.Context, id int) *User {
obj, err := c.Get(ctx, id)
if err != nil {
panic(err)
}
return obj
}
// Hooks returns the client hooks.
func (c *UserClient) Hooks() []Hook {
return c.hooks.User
}