Add binary encoding for timestamptz

2013-07-19 14:40:07 -05:00
parent faed7f2879
commit 9e321af35c
2 changed files with 75 additions and 2 deletions
@@ -96,8 +96,9 @@ func init() {

 	// timestamptz
 	ValueTranscoders[Oid(1184)] = &ValueTranscoder{
-		DecodeText: decodeTimestampTzFromText,
-		EncodeTo:   encodeTimestampTz}
+		DecodeText:   decodeTimestampTzFromText,
+		DecodeBinary: decodeTimestampTzFromBinary,
+		EncodeTo:     encodeTimestampTz}

 	// use text transcoder for anything we don't understand
 	defaultTranscoder = ValueTranscoders[Oid(25)]
@@ -299,6 +300,20 @@ func decodeTimestampTzFromText(mr *MessageReader, size int32) interface{} {
 	return t
 }

+func decodeTimestampTzFromBinary(mr *MessageReader, size int32) interface{} {
+	if size != 8 {
+		panic("Received an invalid size for an int8")
+	}
+	microsecFromUnixEpochToY2K := int64(946684800 * 1000000)
+	microsecSinceY2K := mr.ReadInt64()
+	microsecSinceUnixEpoch := microsecFromUnixEpochToY2K + microsecSinceY2K
+	return time.Unix(microsecSinceUnixEpoch/1000000, (microsecSinceUnixEpoch%1000000)*1000)
+
+	// 2000-01-01 00:00:00 in 946684800
+	// 946684800 * 1000000
+
+}
+
 func encodeTimestampTz(w *MessageWriter, value interface{}) {
 	t := value.(time.Time)
 	s := t.Format("2006-01-02 15:04:05.999999 -0700")