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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/facebookincubator/ent/examples/edgeindex/ent/migrate"
"github.com/facebookincubator/ent/examples/edgeindex/ent/city"
"github.com/facebookincubator/ent/examples/edgeindex/ent/street"
"github.com/facebookincubator/ent/dialect"
"github.com/facebookincubator/ent/dialect/sql"
"github.com/facebookincubator/ent/dialect/sql/sqlgraph"
)
// 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
// City is the client for interacting with the City builders.
City *CityClient
// Street is the client for interacting with the Street builders.
Street *StreetClient
}
// 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.City = NewCityClient(c.config)
c.Street = NewStreetClient(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,
City: NewCityClient(cfg),
Street: NewStreetClient(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,
City: NewCityClient(cfg),
Street: NewStreetClient(cfg),
}, nil
}
// Debug returns a new debug-client. It's used to get verbose logging on specific operations.
//
// client.Debug().
// City.
// 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.City.Use(hooks...)
c.Street.Use(hooks...)
}
// CityClient is a client for the City schema.
type CityClient struct {
config
}
// NewCityClient returns a client for the City from the given config.
func NewCityClient(c config) *CityClient {
return &CityClient{config: c}
}
// Use adds a list of mutation hooks to the hooks stack.
// A call to `Use(f, g, h)` equals to `city.Hooks(f(g(h())))`.
func (c *CityClient) Use(hooks ...Hook) {
c.hooks.City = append(c.hooks.City, hooks...)
}
// Create returns a create builder for City.
func (c *CityClient) Create() *CityCreate {
mutation := newCityMutation(c.config, OpCreate)
return &CityCreate{config: c.config, hooks: c.Hooks(), mutation: mutation}
}
// Update returns an update builder for City.
func (c *CityClient) Update() *CityUpdate {
mutation := newCityMutation(c.config, OpUpdate)
return &CityUpdate{config: c.config, hooks: c.Hooks(), mutation: mutation}
}
// UpdateOne returns an update builder for the given entity.
func (c *CityClient) UpdateOne(ci *City) *CityUpdateOne {
mutation := newCityMutation(c.config, OpUpdateOne, withCity(ci))
return &CityUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
}
// UpdateOneID returns an update builder for the given id.
func (c *CityClient) UpdateOneID(id int) *CityUpdateOne {
mutation := newCityMutation(c.config, OpUpdateOne, withCityID(id))
return &CityUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
}
// Delete returns a delete builder for City.
func (c *CityClient) Delete() *CityDelete {
mutation := newCityMutation(c.config, OpDelete)
return &CityDelete{config: c.config, hooks: c.Hooks(), mutation: mutation}
}
// DeleteOne returns a delete builder for the given entity.
func (c *CityClient) DeleteOne(ci *City) *CityDeleteOne {
return c.DeleteOneID(ci.ID)
}
// DeleteOneID returns a delete builder for the given id.
func (c *CityClient) DeleteOneID(id int) *CityDeleteOne {
builder := c.Delete().Where(city.ID(id))
builder.mutation.id = &id
builder.mutation.op = OpDeleteOne
return &CityDeleteOne{builder}
}
// Create returns a query builder for City.
func (c *CityClient) Query() *CityQuery {
return &CityQuery{config: c.config}
}
// Get returns a City entity by its id.
func (c *CityClient) Get(ctx context.Context, id int) (*City, error) {
return c.Query().Where(city.ID(id)).Only(ctx)
}
// GetX is like Get, but panics if an error occurs.
func (c *CityClient) GetX(ctx context.Context, id int) *City {
ci, err := c.Get(ctx, id)
if err != nil {
panic(err)
}
return ci
}
// QueryStreets queries the streets edge of a City.
func (c *CityClient) QueryStreets(ci *City) *StreetQuery {
query := &StreetQuery{config: c.config}
query.path = func(ctx context.Context) (fromV *sql.Selector, _ error) {
id := ci.ID
step := sqlgraph.NewStep(
sqlgraph.From(city.Table, city.FieldID, id),
sqlgraph.To(street.Table, street.FieldID),
sqlgraph.Edge(sqlgraph.O2M, false, city.StreetsTable, city.StreetsColumn),
)
fromV = sqlgraph.Neighbors(ci.driver.Dialect(), step)
return fromV, nil
}
return query
}
// Hooks returns the client hooks.
func (c *CityClient) Hooks() []Hook {
return c.hooks.City
}
// StreetClient is a client for the Street schema.
type StreetClient struct {
config
}
// NewStreetClient returns a client for the Street from the given config.
func NewStreetClient(c config) *StreetClient {
return &StreetClient{config: c}
}
// Use adds a list of mutation hooks to the hooks stack.
// A call to `Use(f, g, h)` equals to `street.Hooks(f(g(h())))`.
func (c *StreetClient) Use(hooks ...Hook) {
c.hooks.Street = append(c.hooks.Street, hooks...)
}
// Create returns a create builder for Street.
func (c *StreetClient) Create() *StreetCreate {
mutation := newStreetMutation(c.config, OpCreate)
return &StreetCreate{config: c.config, hooks: c.Hooks(), mutation: mutation}
}
// Update returns an update builder for Street.
func (c *StreetClient) Update() *StreetUpdate {
mutation := newStreetMutation(c.config, OpUpdate)
return &StreetUpdate{config: c.config, hooks: c.Hooks(), mutation: mutation}
}
// UpdateOne returns an update builder for the given entity.
func (c *StreetClient) UpdateOne(s *Street) *StreetUpdateOne {
mutation := newStreetMutation(c.config, OpUpdateOne, withStreet(s))
return &StreetUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
}
// UpdateOneID returns an update builder for the given id.
func (c *StreetClient) UpdateOneID(id int) *StreetUpdateOne {
mutation := newStreetMutation(c.config, OpUpdateOne, withStreetID(id))
return &StreetUpdateOne{config: c.config, hooks: c.Hooks(), mutation: mutation}
}
// Delete returns a delete builder for Street.
func (c *StreetClient) Delete() *StreetDelete {
mutation := newStreetMutation(c.config, OpDelete)
return &StreetDelete{config: c.config, hooks: c.Hooks(), mutation: mutation}
}
// DeleteOne returns a delete builder for the given entity.
func (c *StreetClient) DeleteOne(s *Street) *StreetDeleteOne {
return c.DeleteOneID(s.ID)
}
// DeleteOneID returns a delete builder for the given id.
func (c *StreetClient) DeleteOneID(id int) *StreetDeleteOne {
builder := c.Delete().Where(street.ID(id))
builder.mutation.id = &id
builder.mutation.op = OpDeleteOne
return &StreetDeleteOne{builder}
}
// Create returns a query builder for Street.
func (c *StreetClient) Query() *StreetQuery {
return &StreetQuery{config: c.config}
}
// Get returns a Street entity by its id.
func (c *StreetClient) Get(ctx context.Context, id int) (*Street, error) {
return c.Query().Where(street.ID(id)).Only(ctx)
}
// GetX is like Get, but panics if an error occurs.
func (c *StreetClient) GetX(ctx context.Context, id int) *Street {
s, err := c.Get(ctx, id)
if err != nil {
panic(err)
}
return s
}
// QueryCity queries the city edge of a Street.
func (c *StreetClient) QueryCity(s *Street) *CityQuery {
query := &CityQuery{config: c.config}
query.path = func(ctx context.Context) (fromV *sql.Selector, _ error) {
id := s.ID
step := sqlgraph.NewStep(
sqlgraph.From(street.Table, street.FieldID, id),
sqlgraph.To(city.Table, city.FieldID),
sqlgraph.Edge(sqlgraph.M2O, true, street.CityTable, street.CityColumn),
)
fromV = sqlgraph.Neighbors(s.driver.Dialect(), step)
return fromV, nil
}
return query
}
// Hooks returns the client hooks.
func (c *StreetClient) Hooks() []Hook {
return c.hooks.Street
}