| package edu.uci.ics.hyracks.dataflow.common.data.normalizers; |
| |
| import edu.uci.ics.hyracks.api.dataflow.value.INormalizedKeyComputer; |
| import edu.uci.ics.hyracks.api.dataflow.value.INormalizedKeyComputerFactory; |
| import edu.uci.ics.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer; |
| |
| public class DoubleNormalizedKeyComputerFactory implements INormalizedKeyComputerFactory { |
| |
| private static final long serialVersionUID = 1L; |
| |
| @Override |
| public INormalizedKeyComputer createNormalizedKeyComputer() { |
| return new INormalizedKeyComputer() { |
| |
| @Override |
| public int normalize(byte[] bytes, int start, int length) { |
| int prefix = IntegerSerializerDeserializer.getInt(bytes, start); |
| if (prefix >= 0) { |
| return prefix ^ Integer.MIN_VALUE; |
| } else { |
| return (int) ((long) 0xffffffff - (long) prefix); |
| } |
| } |
| |
| }; |
| } |
| |
| } |
