ent/examples/m2mrecur/ent/user_create.go

// Copyright (c) Facebook, Inc. and its affiliates. 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"
	"errors"
	"fmt"

	"github.com/facebookincubator/ent/dialect/sql/sqlgraph"
	"github.com/facebookincubator/ent/examples/m2mrecur/ent/user"
	"github.com/facebookincubator/ent/schema/field"
)

// UserCreate is the builder for creating a User entity.
type UserCreate struct {
	config
	mutation *UserMutation
	hooks    []Hook
}

// SetAge sets the age field.
func (uc *UserCreate) SetAge(i int) *UserCreate {
	uc.mutation.SetAge(i)
	return uc
}

// SetName sets the name field.
func (uc *UserCreate) SetName(s string) *UserCreate {
	uc.mutation.SetName(s)
	return uc
}

// AddFollowerIDs adds the followers edge to User by ids.
func (uc *UserCreate) AddFollowerIDs(ids ...int) *UserCreate {
	uc.mutation.AddFollowerIDs(ids...)
	return uc
}

// AddFollowers adds the followers edges to User.
func (uc *UserCreate) AddFollowers(u ...*User) *UserCreate {
	ids := make([]int, len(u))
	for i := range u {
		ids[i] = u[i].ID
	}
	return uc.AddFollowerIDs(ids...)
}

// AddFollowingIDs adds the following edge to User by ids.
func (uc *UserCreate) AddFollowingIDs(ids ...int) *UserCreate {
	uc.mutation.AddFollowingIDs(ids...)
	return uc
}

// AddFollowing adds the following edges to User.
func (uc *UserCreate) AddFollowing(u ...*User) *UserCreate {
	ids := make([]int, len(u))
	for i := range u {
		ids[i] = u[i].ID
	}
	return uc.AddFollowingIDs(ids...)
}

// Mutation returns the UserMutation object of the builder.
func (uc *UserCreate) Mutation() *UserMutation {
	return uc.mutation
}

// Save creates the User in the database.
func (uc *UserCreate) Save(ctx context.Context) (*User, error) {
	if _, ok := uc.mutation.Age(); !ok {
		return nil, &ValidationError{Name: "age", err: errors.New("ent: missing required field \"age\"")}
	}
	if _, ok := uc.mutation.Name(); !ok {
		return nil, &ValidationError{Name: "name", err: errors.New("ent: missing required field \"name\"")}
	}
	var (
		err  error
		node *User
	)
	if len(uc.hooks) == 0 {
		node, err = uc.sqlSave(ctx)
	} else {
		var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
			mutation, ok := m.(*UserMutation)
			if !ok {
				return nil, fmt.Errorf("unexpected mutation type %T", m)
			}
			uc.mutation = mutation
			node, err = uc.sqlSave(ctx)
			mutation.done = true
			return node, err
		})
		for i := len(uc.hooks) - 1; i >= 0; i-- {
			mut = uc.hooks[i](mut)
		}
		if _, err := mut.Mutate(ctx, uc.mutation); err != nil {
			return nil, err
		}
	}
	return node, err
}

// SaveX calls Save and panics if Save returns an error.
func (uc *UserCreate) SaveX(ctx context.Context) *User {
	v, err := uc.Save(ctx)
	if err != nil {
		panic(err)
	}
	return v
}

func (uc *UserCreate) sqlSave(ctx context.Context) (*User, error) {
	var (
		u     = &User{config: uc.config}
		_spec = &sqlgraph.CreateSpec{
			Table: user.Table,
			ID: &sqlgraph.FieldSpec{
				Type:   field.TypeInt,
				Column: user.FieldID,
			},
		}
	)
	if value, ok := uc.mutation.Age(); ok {
		_spec.Fields = append(_spec.Fields, &sqlgraph.FieldSpec{
			Type:   field.TypeInt,
			Value:  value,
			Column: user.FieldAge,
		})
		u.Age = value
	}
	if value, ok := uc.mutation.Name(); ok {
		_spec.Fields = append(_spec.Fields, &sqlgraph.FieldSpec{
			Type:   field.TypeString,
			Value:  value,
			Column: user.FieldName,
		})
		u.Name = value
	}
	if nodes := uc.mutation.FollowersIDs(); len(nodes) > 0 {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.M2M,
			Inverse: true,
			Table:   user.FollowersTable,
			Columns: user.FollowersPrimaryKey,
			Bidi:    false,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: user.FieldID,
				},
			},
		}
		for _, k := range nodes {
			edge.Target.Nodes = append(edge.Target.Nodes, k)
		}
		_spec.Edges = append(_spec.Edges, edge)
	}
	if nodes := uc.mutation.FollowingIDs(); len(nodes) > 0 {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.M2M,
			Inverse: false,
			Table:   user.FollowingTable,
			Columns: user.FollowingPrimaryKey,
			Bidi:    false,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: user.FieldID,
				},
			},
		}
		for _, k := range nodes {
			edge.Target.Nodes = append(edge.Target.Nodes, k)
		}
		_spec.Edges = append(_spec.Edges, edge)
	}
	if err := sqlgraph.CreateNode(ctx, uc.driver, _spec); err != nil {
		if cerr, ok := isSQLConstraintError(err); ok {
			err = cerr
		}
		return nil, err
	}
	id := _spec.ID.Value.(int64)
	u.ID = int(id)
	return u, nil
}