Beego/orm/types.go

// Copyright 2014 beego Author. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package orm

import (
	"database/sql"
	"reflect"
	"time"
)

// database driver
type Driver interface {
	Name() string
	Type() DriverType
}

// field info
type Fielder interface {
	String() string
	FieldType() int
	SetRaw(interface{}) error
	RawValue() interface{}
}

// orm struct
type Ormer interface {
	Read(interface{}, ...string) error
	ReadOrCreate(interface{}, string, ...string) (bool, int64, error)
	Insert(interface{}) (int64, error)
	InsertMulti(int, interface{}) (int64, error)
	Update(interface{}, ...string) (int64, error)
	Delete(interface{}) (int64, error)
	LoadRelated(interface{}, string, ...interface{}) (int64, error)
	QueryM2M(interface{}, string) QueryM2Mer
	QueryTable(interface{}) QuerySeter
	Using(string) error
	Begin() error
	Commit() error
	Rollback() error
	Raw(string, ...interface{}) RawSeter
	Driver() Driver
	GetDB() dbQuerier
}

// insert prepared statement
type Inserter interface {
	Insert(interface{}) (int64, error)
	Close() error
}

// query seter
type QuerySeter interface {
	Filter(string, ...interface{}) QuerySeter
	Exclude(string, ...interface{}) QuerySeter
	SetCond(*Condition) QuerySeter
	Limit(interface{}, ...interface{}) QuerySeter
	Offset(interface{}) QuerySeter
	OrderBy(...string) QuerySeter
	RelatedSel(...interface{}) QuerySeter
	Count() (int64, error)
	Exist() bool
	Update(Params) (int64, error)
	Delete() (int64, error)
	PrepareInsert() (Inserter, error)
	All(interface{}, ...string) (int64, error)
	One(interface{}, ...string) error
	Values(*[]Params, ...string) (int64, error)
	ValuesList(*[]ParamsList, ...string) (int64, error)
	ValuesFlat(*ParamsList, string) (int64, error)
	RowsToMap(*Params, string, string) (int64, error)
	RowsToStruct(interface{}, string, string) (int64, error)
}

// model to model query struct
type QueryM2Mer interface {
	Add(...interface{}) (int64, error)
	Remove(...interface{}) (int64, error)
	Exist(interface{}) bool
	Clear() (int64, error)
	Count() (int64, error)
}

// raw query statement
type RawPreparer interface {
	Exec(...interface{}) (sql.Result, error)
	Close() error
}

// raw query seter
type RawSeter interface {
	Exec() (sql.Result, error)
	QueryRow(...interface{}) error
	QueryRows(...interface{}) (int64, error)
	SetArgs(...interface{}) RawSeter
	Values(*[]Params, ...string) (int64, error)
	ValuesList(*[]ParamsList, ...string) (int64, error)
	ValuesFlat(*ParamsList, ...string) (int64, error)
	RowsToMap(*Params, string, string) (int64, error)
	RowsToStruct(interface{}, string, string) (int64, error)
	Prepare() (RawPreparer, error)
}

// statement querier
type stmtQuerier interface {
	Close() error
	Exec(args ...interface{}) (sql.Result, error)
	Query(args ...interface{}) (*sql.Rows, error)
	QueryRow(args ...interface{}) *sql.Row
}

// db querier
type dbQuerier interface {
	Prepare(query string) (*sql.Stmt, error)
	Exec(query string, args ...interface{}) (sql.Result, error)
	Query(query string, args ...interface{}) (*sql.Rows, error)
	QueryRow(query string, args ...interface{}) *sql.Row
}

// type DB interface {
// 	Begin() (*sql.Tx, error)
// 	Prepare(query string) (stmtQuerier, error)
// 	Exec(query string, args ...interface{}) (sql.Result, error)
// 	Query(query string, args ...interface{}) (*sql.Rows, error)
// 	QueryRow(query string, args ...interface{}) *sql.Row
// }

// transaction beginner
type txer interface {
	Begin() (*sql.Tx, error)
}

// transaction ending
type txEnder interface {
	Commit() error
	Rollback() error
}

// base database struct
type dbBaser interface {
	Read(dbQuerier, *modelInfo, reflect.Value, *time.Location, []string) error
	Insert(dbQuerier, *modelInfo, reflect.Value, *time.Location) (int64, error)
	InsertMulti(dbQuerier, *modelInfo, reflect.Value, int, *time.Location) (int64, error)
	InsertValue(dbQuerier, *modelInfo, bool, []string, []interface{}) (int64, error)
	InsertStmt(stmtQuerier, *modelInfo, reflect.Value, *time.Location) (int64, error)
	Update(dbQuerier, *modelInfo, reflect.Value, *time.Location, []string) (int64, error)
	Delete(dbQuerier, *modelInfo, reflect.Value, *time.Location) (int64, error)
	ReadBatch(dbQuerier, *querySet, *modelInfo, *Condition, interface{}, *time.Location, []string) (int64, error)
	SupportUpdateJoin() bool
	UpdateBatch(dbQuerier, *querySet, *modelInfo, *Condition, Params, *time.Location) (int64, error)
	DeleteBatch(dbQuerier, *querySet, *modelInfo, *Condition, *time.Location) (int64, error)
	Count(dbQuerier, *querySet, *modelInfo, *Condition, *time.Location) (int64, error)
	OperatorSql(string) string
	GenerateOperatorSql(*modelInfo, *fieldInfo, string, []interface{}, *time.Location) (string, []interface{})
	GenerateOperatorLeftCol(*fieldInfo, string, *string)
	PrepareInsert(dbQuerier, *modelInfo) (stmtQuerier, string, error)
	ReadValues(dbQuerier, *querySet, *modelInfo, *Condition, []string, interface{}, *time.Location) (int64, error)
	RowsTo(dbQuerier, *querySet, *modelInfo, *Condition, interface{}, string, string, *time.Location) (int64, error)
	MaxLimit() uint64
	TableQuote() string
	ReplaceMarks(*string)
	HasReturningID(*modelInfo, *string) bool
	TimeFromDB(*time.Time, *time.Location)
	TimeToDB(*time.Time, *time.Location)
	DbTypes() map[string]string
	GetTables(dbQuerier) (map[string]bool, error)
	GetColumns(dbQuerier, string) (map[string][3]string, error)
	ShowTablesQuery() string
	ShowColumnsQuery(string) string
	IndexExists(dbQuerier, string, string) bool
	collectFieldValue(*modelInfo, *fieldInfo, reflect.Value, bool, *time.Location) (interface{}, error)
}