@Override
public Datum eval(Tuple params) {
if (params.isBlankOrNull(0) || params.isBlankOrNull(1)) {
return NullDatum.get();
}
String fillText;
if (hasFillCharacters) {
fillText = params.getText(2);
} else {
fillText = " ";
}
String input = params.getText(0);
int expected = params.getInt4(1);
int templen = expected - params.size(0);
if (templen <= 0) {
return DatumFactory.createText(input.substring(0, expected));
} else {
return DatumFactory.createText(StringUtils.leftPad(input, expected, fillText));
}
}
@Override
public Datum eval(Tuple tuple) {
Datum resultDatum;
for (int i = 0; i < tuple.size(); i++) {
params[i] = WritableTypeConverter.convertDatum2Writable(tuple.asDatum(i));
}
try {
Writable result = (Writable) evalMethod.invoke(instance, params);
resultDatum = WritableTypeConverter.convertWritable2Datum(result);
} catch (Exception e) {
throw new TajoInternalError(e);
}
return resultDatum;
}
private void writeValue(Column column, Tuple tuple, int index) {
switch (column.getDataType().getType()) {
case BOOLEAN:
recordConsumer.addBoolean(tuple.getBool(index));
break;
case BIT:
case INT2:
case INT4:
recordConsumer.addInteger(tuple.getInt4(index));
break;
case INT8:
recordConsumer.addLong(tuple.getInt8(index));
break;
case FLOAT4:
recordConsumer.addFloat(tuple.getFloat4(index));
break;
case FLOAT8:
recordConsumer.addDouble(tuple.getFloat8(index));
break;
case CHAR:
if (tuple.size(index) > column.getDataType().getLength()) {
throw new ValueTooLongForTypeCharactersException(column.getDataType().getLength());
}
recordConsumer.addBinary(Binary.fromByteArray(tuple.getTextBytes(index)));
break;
case TEXT:
recordConsumer.addBinary(Binary.fromByteArray(tuple.getTextBytes(index)));
break;
case DATE:
// Parquet DATE type is based on Unix Epoch(Jan 1, 1970).
recordConsumer.addInteger(tuple.getInt4(index) - DateTimeConstants.UNIX_EPOCH_JDATE);
break;
case PROTOBUF:
case BLOB:
recordConsumer.addBinary(Binary.fromByteArray(tuple.getBytes(index)));
break;
default:
break;
}
}