mirror of https://github.com/jackc/pgx.git
61 lines
1.0 KiB
Go
61 lines
1.0 KiB
Go
package pgproto3
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import (
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"bytes"
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"encoding/binary"
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"encoding/json"
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)
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type Execute struct {
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Portal string
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MaxRows uint32
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}
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func (*Execute) Frontend() {}
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func (dst *Execute) Decode(src []byte) error {
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buf := bytes.NewBuffer(src)
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b, err := buf.ReadBytes(0)
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if err != nil {
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return err
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}
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dst.Portal = string(b[:len(b)-1])
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if buf.Len() < 4 {
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return &invalidMessageFormatErr{messageType: "Execute"}
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}
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dst.MaxRows = binary.BigEndian.Uint32(buf.Next(4))
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return nil
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}
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func (src *Execute) MarshalBinary() ([]byte, error) {
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var bigEndian BigEndianBuf
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buf := &bytes.Buffer{}
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buf.WriteByte('E')
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buf.Write(bigEndian.Uint32(0))
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buf.WriteString(src.Portal)
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buf.WriteByte(0)
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buf.Write(bigEndian.Uint32(src.MaxRows))
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binary.BigEndian.PutUint32(buf.Bytes()[1:5], uint32(buf.Len()-1))
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return buf.Bytes(), nil
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}
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func (src *Execute) MarshalJSON() ([]byte, error) {
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return json.Marshal(struct {
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Type string
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Portal string
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MaxRows uint32
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}{
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Type: "Execute",
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Portal: src.Portal,
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MaxRows: src.MaxRows,
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})
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}
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