diff options
Diffstat (limited to 'vendor/github.com/jackc/pgx/v5/pgproto3/execute.go')
-rw-r--r-- | vendor/github.com/jackc/pgx/v5/pgproto3/execute.go | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/vendor/github.com/jackc/pgx/v5/pgproto3/execute.go b/vendor/github.com/jackc/pgx/v5/pgproto3/execute.go new file mode 100644 index 0000000..31bc714 --- /dev/null +++ b/vendor/github.com/jackc/pgx/v5/pgproto3/execute.go @@ -0,0 +1,58 @@ +package pgproto3 + +import ( + "bytes" + "encoding/binary" + "encoding/json" + + "github.com/jackc/pgx/v5/internal/pgio" +) + +type Execute struct { + Portal string + MaxRows uint32 +} + +// Frontend identifies this message as sendable by a PostgreSQL frontend. +func (*Execute) Frontend() {} + +// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message +// type identifier and 4 byte message length. +func (dst *Execute) Decode(src []byte) error { + buf := bytes.NewBuffer(src) + + b, err := buf.ReadBytes(0) + if err != nil { + return err + } + dst.Portal = string(b[:len(b)-1]) + + if buf.Len() < 4 { + return &invalidMessageFormatErr{messageType: "Execute"} + } + dst.MaxRows = binary.BigEndian.Uint32(buf.Next(4)) + + return nil +} + +// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length. +func (src *Execute) Encode(dst []byte) ([]byte, error) { + dst, sp := beginMessage(dst, 'E') + dst = append(dst, src.Portal...) + dst = append(dst, 0) + dst = pgio.AppendUint32(dst, src.MaxRows) + return finishMessage(dst, sp) +} + +// MarshalJSON implements encoding/json.Marshaler. +func (src Execute) MarshalJSON() ([]byte, error) { + return json.Marshal(struct { + Type string + Portal string + MaxRows uint32 + }{ + Type: "Execute", + Portal: src.Portal, + MaxRows: src.MaxRows, + }) +} |