How to use

asChars

method

in

org.apache.tajo.datum.TimestampDatum

public String toString() {
 return asChars();
}

public String toString() {
 return asChars();
}

@Override
public byte[] asTextBytes() {
 return asChars().getBytes(TextDatum.DEFAULT_CHARSET);
}

@Override
public byte[] asTextBytes() {
 return asChars().getBytes(TextDatum.DEFAULT_CHARSET);
}

@Override
public String asChars() {
 TimeMeta tm = asTimeMeta();
 return asChars(tm, TimeZone.getDefault(), true);
}

@Override
public String asChars() {
 TimeMeta tm = asTimeMeta();
 return asChars(tm, TimeZone.getDefault(), true);
}

public String toString(TimeZone timeZone, boolean includeTimeZone) {
 return asChars(asTimeMeta(), timeZone, includeTimeZone);
}

public String toString(TimeZone timeZone, boolean includeTimeZone) {
 return asChars(asTimeMeta(), timeZone, includeTimeZone);
}

private String getString(Tuple tuple, int index) throws SQLException {
 if (handleNull(tuple, index)) {
  return null;
 }
 switch(tuple.type(index)) {
  case BOOLEAN:
   return String.valueOf(tuple.getBool(index));
  case TIMESTAMP:
   return TimestampDatum.asChars(tuple.getTimeDate(index), timezone, false);
  default :
   return tuple.asDatum(index).asChars();
 }
}

private String getString(Tuple tuple, int index) throws SQLException {
 if (handleNull(tuple, index)) {
  return null;
 }
 switch(tuple.type(index)) {
  case BOOLEAN:
   return String.valueOf(tuple.getBool(index));
  case TIMESTAMP:
   return TimestampDatum.asChars(tuple.getTimeDate(index), timezone, false);
  default :
   return tuple.asDatum(index).asChars();
 }
}

 break;
case TIMESTAMP:
 bytes = ((TimestampDatum)datum).asChars(TajoConf.getCurrentTimeZone(), true).getBytes();
 length = bytes.length;
 out.write(bytes);

case TIMESTAMP:
 bytes = TimestampDatum.asChars(
   tuple.getTimeDate(columnIndex), tableTimezone, false).getBytes(Bytes.UTF8_CHARSET);

case TIMESTAMP:
 bytes = TimestampDatum.asChars(
   tuple.getTimeDate(columnIndex), tableTimezone, false).getBytes(Bytes.UTF8_CHARSET);

@Test
public void testCastWithNestedFunction() throws TajoException {
 QueryContext context = new QueryContext(getConf());
 context.put(SessionVars.TIMEZONE, "GMT-6");
 TimeZone tz = TimeZone.getTimeZone("GMT-6");
 int unixtime = 1389071574; // (int) (System.currentTimeMillis() / 1000);
 TimestampDatum expected = DatumFactory.createTimestampDatumWithUnixTime(unixtime);
 testSimpleEval(context, String.format("select to_timestamp(CAST(split_part('%d.999', '.', 1) as INT8));", unixtime),
   new String[] {TimestampDatum.asChars(expected.asTimeMeta(), tz, false)});
}

case TIMESTAMP:
 return TimestampDatum.asChars(tuple.getTimeDate(columnIndex), tableTimezone, false);
case BLOB:
 return Base64.encodeBase64String(tuple.getBytes(columnIndex));

TimestampDatum timestampDatum = (TimestampDatum)operandDatum;
if (tz != null) {
 return DatumFactory.createText(TimestampDatum.asChars(operandDatum.asTimeMeta(), tz, false));
} else {
 return DatumFactory.createText(timestampDatum.asChars());

TimestampDatum timestampDatum = (TimestampDatum)operandDatum;
if (tz != null) {
 return DatumFactory.createText(TimestampDatum.asChars(operandDatum.asTimeMeta(), tz, false));
} else {
 return DatumFactory.createText(timestampDatum.asChars());

 json.put(fieldName, TimestampDatum.asChars(input.getTimeDate(fieldIndex), timezone, false));
 break;
case TIME:

 json.put(fieldName, TimestampDatum.asChars(input.getTimeDate(fieldIndex), timezone, false));
 break;
case TIME:

String outTupleAsChars;
if (outTuple.type(i) == Type.TIMESTAMP) {
 outTupleAsChars = TimestampDatum.asChars(outTuple.getTimeDate(i), timeZone, false);
} else {
 outTupleAsChars = outTuple.asDatum(i).toString();