gitroast/vendor/github.com/go-xorm/builder/builder_select.go

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// 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.
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package builder
import (
"errors"
"fmt"
)
func (b *Builder) selectWriteTo(w Writer) error {
if len(b.tableName) <= 0 {
return errors.New("no table indicated")
}
if _, err := fmt.Fprint(w, "SELECT "); err != nil {
return err
}
if len(b.selects) > 0 {
for i, s := range b.selects {
if _, err := fmt.Fprint(w, s); err != nil {
return err
}
if i != len(b.selects)-1 {
if _, err := fmt.Fprint(w, ","); err != nil {
return err
}
}
}
} else {
if _, err := fmt.Fprint(w, "*"); err != nil {
return err
}
}
if _, err := fmt.Fprintf(w, " FROM %s", b.tableName); err != nil {
return err
}
for _, v := range b.joins {
fmt.Fprintf(w, " %s JOIN %s ON ", v.joinType, v.joinTable)
if err := v.joinCond.WriteTo(w); err != nil {
return err
}
}
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if !b.cond.IsValid() {
return nil
}
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if _, err := fmt.Fprint(w, " WHERE "); err != nil {
return err
}
return b.cond.WriteTo(w)
}