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