hivesterix/src/main/java/edu/uci/ics/hivesterix/runtime/factory/comparator/HiveShortBinaryDescComparatorFactory.java

package edu.uci.ics.hivesterix.runtime.factory.comparator;

import edu.uci.ics.hivesterix.serde.lazy.LazyUtils;
import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparator;
import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparatorFactory;

public class HiveShortBinaryDescComparatorFactory implements
		IBinaryComparatorFactory {
	private static final long serialVersionUID = 1L;

	public static HiveShortBinaryDescComparatorFactory INSTANCE = new HiveShortBinaryDescComparatorFactory();

	private HiveShortBinaryDescComparatorFactory() {
	}

	@Override
	public IBinaryComparator createBinaryComparator() {
		return new IBinaryComparator() {
			private short left;
			private short right;

			@Override
			public int compare(byte[] b1, int s1, int l1, byte[] b2, int s2,
					int l2) {
				left = LazyUtils.byteArrayToShort(b1, s1);
				right = LazyUtils.byteArrayToShort(b2, s2);
				if (left > right)
					return -1;
				else if (left == right)
					return 0;
				else
					return 1;
			}
		};
	}

}