| /* |
| * Copyright 2009-2013 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.hivesterix.runtime.factory.comparator;
|
|
|
| import edu.uci.ics.hivesterix.serde.lazy.LazyUtils;
|
| import edu.uci.ics.hivesterix.serde.lazy.LazyUtils.VInt;
|
| import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparator;
|
| import edu.uci.ics.hyracks.api.dataflow.value.IBinaryComparatorFactory;
|
|
|
| public class HiveIntegerBinaryAscComparatorFactory implements IBinaryComparatorFactory {
|
| private static final long serialVersionUID = 1L;
|
|
|
| public static final HiveIntegerBinaryAscComparatorFactory INSTANCE = new HiveIntegerBinaryAscComparatorFactory();
|
|
|
| private HiveIntegerBinaryAscComparatorFactory() {
|
| }
|
|
|
| @Override
|
| public IBinaryComparator createBinaryComparator() {
|
| return new IBinaryComparator() {
|
| private VInt left = new VInt();
|
| private VInt right = new VInt();
|
|
|
| @Override
|
| public int compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) {
|
| LazyUtils.readVInt(b1, s1, left);
|
| LazyUtils.readVInt(b2, s2, right);
|
|
|
| if (left.length != l1 || right.length != l2)
|
| throw new IllegalArgumentException("length mismatch in int comparator function actual: "
|
| + left.length + "," + right.length + " expected " + l1 + "," + l2);
|
|
|
| if (left.value > right.value)
|
| return 1;
|
| else if (left.value == right.value)
|
| return 0;
|
| else
|
| return -1;
|
| }
|
| };
|
| }
|
| }
|