interface.go

package gen

import (
	"database/sql"

	"gorm.io/gorm"
	"gorm.io/gorm/clause"

	"gorm.io/gen/field"
)

var _ Condition = Dao(&DO{})
var _ Condition = field.Expr(field.NewField("", "field"))

// Condition query condition
// field.Expr and subquery(Dao) are expect valued
type Condition interface {
	clause.Expression
}

type subQuery interface {
	UnderlyingDB() *gorm.DB
	buildStmt(opts ...stmtOpt) *gorm.Statement
}

// Dao CRUD methods
type Dao interface {
	clause.Expression
	subQuery

	As(alias string) Dao

	Not(conds ...Condition) Dao
	Or(conds ...Condition) Dao

	Select(columns ...field.Expr) Dao
	Where(conds ...Condition) Dao
	Order(columns ...field.Expr) Dao
	Distinct(columns ...field.Expr) Dao
	Omit(columns ...field.Expr) Dao
	// Joins(cond field.Expr) Dao
	Group(columns field.Expr) Dao
	Having(conds ...Condition) Dao
	Limit(limit int) Dao
	Offset(offset int) Dao
	Scopes(funcs ...func(Dao) Dao) Dao
	// Preload(conds ...field.Expr) Dao
	// Attrs(attrs ...interface{}) Dao
	// Assign(attrs ...interface{}) Dao
	Unscoped() Dao

	Create(value interface{}) error
	CreateInBatches(value interface{}, batchSize int) error
	Save(value interface{}) error
	First(dest interface{}, conds ...field.Expr) error
	Last(dest interface{}, conds ...field.Expr) error
	Take(dest interface{}, conds ...field.Expr) error
	Find(dest interface{}, conds ...field.Expr) error
	FindInBatches(dest interface{}, batchSize int, fc func(tx Dao, batch int) error) error
	FirstOrInit(dest interface{}, conds ...field.Expr) error
	FirstOrCreate(dest interface{}, conds ...field.Expr) error
	Update(column field.Expr, value interface{}) error
	Updates(values interface{}) error
	UpdateColumn(column field.Expr, value interface{}) error
	UpdateColumns(values interface{}) error
	Delete(value interface{}, conds ...field.Expr) error
	Count(count *int64) error
	Row() *sql.Row
	Rows() (*sql.Rows, error)
	Scan(dest interface{}) error
	Pluck(column field.Expr, dest interface{}) error
	ScanRows(rows *sql.Rows, dest interface{}) error

	Transaction(fc func(tx Dao) error, opts ...*sql.TxOptions) error
	Begin(opts ...*sql.TxOptions) Dao
	Commit() Dao
	RollBack() Dao
	SavePoint(name string) Dao
	RollBackTo(name string) Dao
}