car.go

// 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 (
	"fmt"
	"strings"

	"entgo.io/ent/dialect/sql"
	"entgo.io/ent/entc/integration/edgefield/ent/car"
	"github.com/google/uuid"
)

// Car is the model entity for the Car schema.
type Car struct {
	config `json:"-"`
	// ID of the ent.
	ID uuid.UUID `json:"id,omitempty"`
	// Number holds the value of the "number" field.
	Number string `json:"number,omitempty"`
	// Edges holds the relations/edges for other nodes in the graph.
	// The values are being populated by the CarQuery when eager-loading is set.
	Edges CarEdges `json:"edges"`
}

// CarEdges holds the relations/edges for other nodes in the graph.
type CarEdges struct {
	// Rentals holds the value of the rentals edge.
	Rentals []*Rental `json:"rentals,omitempty"`
	// loadedTypes holds the information for reporting if a
	// type was loaded (or requested) in eager-loading or not.
	loadedTypes [1]bool
}

// RentalsOrErr returns the Rentals value or an error if the edge
// was not loaded in eager-loading.
func (e CarEdges) RentalsOrErr() ([]*Rental, error) {
	if e.loadedTypes[0] {
		return e.Rentals, nil
	}
	return nil, &NotLoadedError{edge: "rentals"}
}

// scanValues returns the types for scanning values from sql.Rows.
func (*Car) scanValues(columns []string) ([]interface{}, error) {
	values := make([]interface{}, len(columns))
	for i := range columns {
		switch columns[i] {
		case car.FieldNumber:
			values[i] = new(sql.NullString)
		case car.FieldID:
			values[i] = new(uuid.UUID)
		default:
			return nil, fmt.Errorf("unexpected column %q for type Car", columns[i])
		}
	}
	return values, nil
}

// assignValues assigns the values that were returned from sql.Rows (after scanning)
// to the Car fields.
func (c *Car) assignValues(columns []string, values []interface{}) error {
	if m, n := len(values), len(columns); m < n {
		return fmt.Errorf("mismatch number of scan values: %d != %d", m, n)
	}
	for i := range columns {
		switch columns[i] {
		case car.FieldID:
			if value, ok := values[i].(*uuid.UUID); !ok {
				return fmt.Errorf("unexpected type %T for field id", values[i])
			} else if value != nil {
				c.ID = *value
			}
		case car.FieldNumber:
			if value, ok := values[i].(*sql.NullString); !ok {
				return fmt.Errorf("unexpected type %T for field number", values[i])
			} else if value.Valid {
				c.Number = value.String
			}
		}
	}
	return nil
}

// QueryRentals queries the "rentals" edge of the Car entity.
func (c *Car) QueryRentals() *RentalQuery {
	return (&CarClient{config: c.config}).QueryRentals(c)
}

// Update returns a builder for updating this Car.
// Note that you need to call Car.Unwrap() before calling this method if this Car
// was returned from a transaction, and the transaction was committed or rolled back.
func (c *Car) Update() *CarUpdateOne {
	return (&CarClient{config: c.config}).UpdateOne(c)
}

// Unwrap unwraps the Car entity that was returned from a transaction after it was closed,
// so that all future queries will be executed through the driver which created the transaction.
func (c *Car) Unwrap() *Car {
	tx, ok := c.config.driver.(*txDriver)
	if !ok {
		panic("ent: Car is not a transactional entity")
	}
	c.config.driver = tx.drv
	return c
}

// String implements the fmt.Stringer.
func (c *Car) String() string {
	var builder strings.Builder
	builder.WriteString("Car(")
	builder.WriteString(fmt.Sprintf("id=%v", c.ID))
	builder.WriteString(", number=")
	builder.WriteString(c.Number)
	builder.WriteByte(')')
	return builder.String()
}

// Cars is a parsable slice of Car.
type Cars []*Car

func (c Cars) config(cfg config) {
	for _i := range c {
		c[_i].config = cfg
	}
}