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62 lines
1.5 KiB
Go
62 lines
1.5 KiB
Go
package aorm
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import (
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"database/sql" //只需导入你需要的驱动即可
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)
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// LinkCommon database/sql提供的库连接与事务，二者有很多方法是一致的，为了通用，抽象为该interface
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type LinkCommon interface {
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Exec(query string, args ...interface{}) (sql.Result, error)
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Prepare(query string) (*sql.Stmt, error)
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Query(query string, args ...interface{}) (*sql.Rows, error)
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QueryRow(query string, args ...interface{}) *sql.Row
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}
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// Executor 查询记录所需要的条件
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type Executor struct {
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LinkCommon LinkCommon
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TableName string
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SelectList []string
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SelectExpList []ExpItem
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GroupList []string
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WhereList []WhereItem
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JoinList []string
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HavingList []WhereItem
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OrderList []string
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Offset int
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PageSize int
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IsDebug bool
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IsLockForUpdate bool
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OpinionList []OpinionItem
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}
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type ExpItem struct {
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Executor *Executor
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FieldName string
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}
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// Use 使用数据库连接，或者事务
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func Use(linkCommon LinkCommon) *Executor {
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executor := &Executor{
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LinkCommon: linkCommon,
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}
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return executor
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}
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//清空查询条件,复用对象
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func (db *Executor) clear() {
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db.TableName = ""
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db.SelectList = make([]string, 0)
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db.GroupList = make([]string, 0)
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db.WhereList = make([]WhereItem, 0)
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db.JoinList = make([]string, 0)
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db.HavingList = make([]WhereItem, 0)
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db.OrderList = make([]string, 0)
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db.Offset = 0
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db.PageSize = 0
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db.IsDebug = false
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db.IsLockForUpdate = false
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db.OpinionList = make([]OpinionItem, 0)
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}
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