58 lines
1.2 KiB
Go
58 lines
1.2 KiB
Go
|
// Copyright 2016 The Xorm Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the LICENSE file.
|
||
|
|
|
||
|
|
package builder
|
||
|
|
|
||
|
|
import "fmt"
|
||
|
|
|
||
|
|
// Expression represetns a SQL express with arguments
|
||
|
|
type Expression struct {
|
||
|
|
sql string
|
||
|
|
args []interface{}
|
||
|
|
}
|
||
|
|
|
||
|
|
var _ Cond = &Expression{}
|
||
|
|
|
||
|
|
// Expr generate customerize SQL
|
||
|
|
func Expr(sql string, args ...interface{}) Cond {
|
||
|
|
return &Expression{sql, args}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (expr *Expression) Content() string {
|
||
|
|
return expr.sql
|
||
|
|
}
|
||
|
|
|
||
|
|
func (expr *Expression) Args() []interface{} {
|
||
|
|
return expr.args
|
||
|
|
}
|
||
|
|
|
||
|
|
// OpWriteTo implements UpdateCond interface
|
||
|
|
func (expr *Expression) OpWriteTo(op string, w Writer) error {
|
||
|
|
return expr.WriteTo(w)
|
||
|
|
}
|
||
|
|
|
||
|
|
// WriteTo implements Cond interface
|
||
|
|
func (expr *Expression) WriteTo(w Writer) error {
|
||
|
|
if _, err := fmt.Fprint(w, expr.sql); err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
w.Append(expr.args...)
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// And implements Cond interface
|
||
|
|
func (expr *Expression) And(conds ...Cond) Cond {
|
||
|
|
return And(expr, And(conds...))
|
||
|
|
}
|
||
|
|
|
||
|
|
// Or implements Cond interface
|
||
|
|
func (expr *Expression) Or(conds ...Cond) Cond {
|
||
|
|
return Or(expr, Or(conds...))
|
||
|
|
}
|
||
|
|
|
||
|
|
// IsValid implements Cond interface
|
||
|
|
func (expr *Expression) IsValid() bool {
|
||
|
|
return len(expr.sql) > 0
|
||
|
|
}
|