/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 at
*
* 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 org.apache.vxquery.compiler.algebricks;
import org.apache.vxquery.datamodel.accessors.TaggedValuePointable;
import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
import edu.uci.ics.hyracks.algebricks.data.IBinaryComparatorFactoryProvider;
import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparator;
import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparatorFactory;
public class VXQueryComparatorFactoryProvider implements IBinaryComparatorFactoryProvider {
@Override
public IBinaryComparatorFactory getBinaryComparatorFactory(Object type, boolean ascending)
throws AlgebricksException {
return new BinaryComparatorFactory(type, ascending);
}
private static class BinaryComparatorFactory implements IBinaryComparatorFactory {
private static final long serialVersionUID = 1L;
private final boolean ascending;
public BinaryComparatorFactory(Object type, boolean ascending) {
this.ascending = ascending;
}
@Override
public IBinaryComparator createBinaryComparator() {
final TaggedValuePointable tvp1 = new TaggedValuePointable();
final TaggedValuePointable tvp2 = new TaggedValuePointable();
return new IBinaryComparator() {
@Override
public int compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) {
tvp1.set(b1, s1, l1);
tvp2.set(b2, s2, l2);
return 0;
}
};
}
}
}