hyracks-dataflow-common/src/main/java/edu/uci/ics/hyracks/dataflow/common/data/comparators/IntegerBinaryComparatorFactory.java

/*
 * Copyright 2009-2010 by The Regents of the University of California
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * you may obtain a copy of the License from
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package edu.uci.ics.hyracks.dataflow.common.data.comparators;

import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparator;
import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparatorFactory;
import edu.uci.ics.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer;

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

    public static final IntegerBinaryComparatorFactory INSTANCE = new IntegerBinaryComparatorFactory();

    private IntegerBinaryComparatorFactory() {
    }

    @Override
    public IBinaryComparator createBinaryComparator() {
        return new IBinaryComparator() {
            @Override
            public int compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) {
                int v1 = IntegerSerializerDeserializer.getInt(b1, s1);
                int v2 = IntegerSerializerDeserializer.getInt(b2, s2);
                return v1 < v2 ? -1 : (v1 > v2 ? 1 : 0);
            }
        };
    }
}