ent/examples/traversal/ent/pet_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 (@generated) by entc, DO NOT EDIT.

package ent

import (
	"context"
	"errors"

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

// PetCreate is the builder for creating a Pet entity.
type PetCreate struct {
	config
	name    *string
	friends map[int]struct{}
	owner   map[int]struct{}
}

// SetName sets the name field.
func (pc *PetCreate) SetName(s string) *PetCreate {
	pc.name = &s
	return pc
}

// AddFriendIDs adds the friends edge to Pet by ids.
func (pc *PetCreate) AddFriendIDs(ids ...int) *PetCreate {
	if pc.friends == nil {
		pc.friends = make(map[int]struct{})
	}
	for i := range ids {
		pc.friends[ids[i]] = struct{}{}
	}
	return pc
}

// AddFriends adds the friends edges to Pet.
func (pc *PetCreate) AddFriends(p ...*Pet) *PetCreate {
	ids := make([]int, len(p))
	for i := range p {
		ids[i] = p[i].ID
	}
	return pc.AddFriendIDs(ids...)
}

// SetOwnerID sets the owner edge to User by id.
func (pc *PetCreate) SetOwnerID(id int) *PetCreate {
	if pc.owner == nil {
		pc.owner = make(map[int]struct{})
	}
	pc.owner[id] = struct{}{}
	return pc
}

// SetNillableOwnerID sets the owner edge to User by id if the given value is not nil.
func (pc *PetCreate) SetNillableOwnerID(id *int) *PetCreate {
	if id != nil {
		pc = pc.SetOwnerID(*id)
	}
	return pc
}

// SetOwner sets the owner edge to User.
func (pc *PetCreate) SetOwner(u *User) *PetCreate {
	return pc.SetOwnerID(u.ID)
}

// Save creates the Pet in the database.
func (pc *PetCreate) Save(ctx context.Context) (*Pet, error) {
	if pc.name == nil {
		return nil, errors.New("ent: missing required field \"name\"")
	}
	if len(pc.owner) > 1 {
		return nil, errors.New("ent: multiple assignments on a unique edge \"owner\"")
	}
	return pc.sqlSave(ctx)
}

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

func (pc *PetCreate) sqlSave(ctx context.Context) (*Pet, error) {
	var (
		pe   = &Pet{config: pc.config}
		spec = &sqlgraph.CreateSpec{
			Table: pet.Table,
			ID: &sqlgraph.FieldSpec{
				Type:   field.TypeInt,
				Column: pet.FieldID,
			},
		}
	)
	if value := pc.name; value != nil {
		spec.Fields = append(spec.Fields, &sqlgraph.FieldSpec{
			Type:   field.TypeString,
			Value:  *value,
			Column: pet.FieldName,
		})
		pe.Name = *value
	}
	if nodes := pc.friends; len(nodes) > 0 {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.M2M,
			Inverse: false,
			Table:   pet.FriendsTable,
			Columns: pet.FriendsPrimaryKey,
			Bidi:    true,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: pet.FieldID,
				},
			},
		}
		for k, _ := range nodes {
			edge.Target.Nodes = append(edge.Target.Nodes, k)
		}
		spec.Edges = append(spec.Edges, edge)
	}
	if nodes := pc.owner; len(nodes) > 0 {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.M2O,
			Inverse: true,
			Table:   pet.OwnerTable,
			Columns: []string{pet.OwnerColumn},
			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, pc.driver, spec); err != nil {
		if cerr, ok := isSQLConstraintError(err); ok {
			err = cerr
		}
		return nil, err
	}

	id := spec.ID.Value.(int64)
	pe.ID = int(id)

	return pe, nil
}