forked from Shiloh/githaven
61 lines
1.1 KiB
Go
61 lines
1.1 KiB
Go
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package builder
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import (
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"bytes"
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"errors"
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"fmt"
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)
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func (b *Builder) insertWriteTo(w Writer) error {
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if len(b.tableName) <= 0 {
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return errors.New("no table indicated")
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}
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if len(b.inserts) <= 0 {
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return errors.New("no column to be update")
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}
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if _, err := fmt.Fprintf(w, "INSERT INTO %s (", b.tableName); err != nil {
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return err
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}
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var args = make([]interface{}, 0)
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var bs []byte
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var valBuffer = bytes.NewBuffer(bs)
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var i = 0
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for col, value := range b.inserts {
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fmt.Fprint(w, col)
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if e, ok := value.(expr); ok {
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fmt.Fprint(valBuffer, e.sql)
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args = append(args, e.args...)
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} else {
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fmt.Fprint(valBuffer, "?")
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args = append(args, value)
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}
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if i != len(b.inserts)-1 {
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if _, err := fmt.Fprint(w, ","); err != nil {
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return err
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}
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if _, err := fmt.Fprint(valBuffer, ","); err != nil {
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return err
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}
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}
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i = i + 1
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}
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if _, err := fmt.Fprint(w, ") Values ("); err != nil {
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return err
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}
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if _, err := w.Write(valBuffer.Bytes()); err != nil {
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return err
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}
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if _, err := fmt.Fprint(w, ")"); err != nil {
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return err
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}
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w.Append(args...)
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return nil
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}
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