// Code generated by ent, DO NOT EDIT.

package ent

import (
	"context"

	"entgo.io/ent/dialect/sql"
	"entgo.io/ent/dialect/sql/sqlgraph"
	"entgo.io/ent/schema/field"
	"gitee.com/yuLingNet/simple-iot-data-rpc/ent/deviceofflinetime"
	"gitee.com/yuLingNet/simple-iot-data-rpc/ent/predicate"
)

// DeviceOfflineTimeDelete is the builder for deleting a DeviceOfflineTime entity.
type DeviceOfflineTimeDelete struct {
	config
	hooks    []Hook
	mutation *DeviceOfflineTimeMutation
}

// Where appends a list predicates to the DeviceOfflineTimeDelete builder.
func (dotd *DeviceOfflineTimeDelete) Where(ps ...predicate.DeviceOfflineTime) *DeviceOfflineTimeDelete {
	dotd.mutation.Where(ps...)
	return dotd
}

// Exec executes the deletion query and returns how many vertices were deleted.
func (dotd *DeviceOfflineTimeDelete) Exec(ctx context.Context) (int, error) {
	return withHooks(ctx, dotd.sqlExec, dotd.mutation, dotd.hooks)
}

// ExecX is like Exec, but panics if an error occurs.
func (dotd *DeviceOfflineTimeDelete) ExecX(ctx context.Context) int {
	n, err := dotd.Exec(ctx)
	if err != nil {
		panic(err)
	}
	return n
}

func (dotd *DeviceOfflineTimeDelete) sqlExec(ctx context.Context) (int, error) {
	_spec := sqlgraph.NewDeleteSpec(deviceofflinetime.Table, sqlgraph.NewFieldSpec(deviceofflinetime.FieldID, field.TypeUint64))
	if ps := dotd.mutation.predicates; len(ps) > 0 {
		_spec.Predicate = func(selector *sql.Selector) {
			for i := range ps {
				ps[i](selector)
			}
		}
	}
	affected, err := sqlgraph.DeleteNodes(ctx, dotd.driver, _spec)
	if err != nil && sqlgraph.IsConstraintError(err) {
		err = &ConstraintError{msg: err.Error(), wrap: err}
	}
	dotd.mutation.done = true
	return affected, err
}

// DeviceOfflineTimeDeleteOne is the builder for deleting a single DeviceOfflineTime entity.
type DeviceOfflineTimeDeleteOne struct {
	dotd *DeviceOfflineTimeDelete
}

// Where appends a list predicates to the DeviceOfflineTimeDelete builder.
func (dotdo *DeviceOfflineTimeDeleteOne) Where(ps ...predicate.DeviceOfflineTime) *DeviceOfflineTimeDeleteOne {
	dotdo.dotd.mutation.Where(ps...)
	return dotdo
}

// Exec executes the deletion query.
func (dotdo *DeviceOfflineTimeDeleteOne) Exec(ctx context.Context) error {
	n, err := dotdo.dotd.Exec(ctx)
	switch {
	case err != nil:
		return err
	case n == 0:
		return &NotFoundError{deviceofflinetime.Label}
	default:
		return nil
	}
}

// ExecX is like Exec, but panics if an error occurs.
func (dotdo *DeviceOfflineTimeDeleteOne) ExecX(ctx context.Context) {
	if err := dotdo.Exec(ctx); err != nil {
		panic(err)
	}
}