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Code Issues Releases Activity

new query builder based on driver

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This commit is contained in:
Zheng Yang 2014-09-08 17:56:55 +08:00
parent c667895ce5
commit f9a9b5a905
1 changed files with 12 additions and 2 deletions
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14
orm/qb.go
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@ -14,6 +14,8 @@
package orm
import "errors"
type QueryBuilder interface {
Select(fields ...string) QueryWriter
From(tables ...string) QueryWriter
@ -29,7 +31,15 @@ type QueryBuilder interface {
String() string
}
func NewQueryBuilder() (qb QueryBuilder) {
qb = new(MySQLQueryBuilder)
func NewQueryBuilder(driver string) (qb QueryBuilder, err error) {
if driver == "mysql" {
qb = new(MySQLQueryBuilder)
} else if driver == "postgres" {
err = errors.New("postgres querybuilder is not supported yet!")
} else if driver == "sqlite" {
err = errors.New("sqlite querybuilder is not supported yet!")
} else {
err = errors.New("unknown driver for query builder!")
}
return
}