| /* |
| * 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.hyracks.dataflow.hadoop.data; |
| |
| import org.apache.hadoop.io.RawComparator; |
| import org.apache.hadoop.io.WritableComparable; |
| |
| import edu.uci.ics.hyracks.api.dataflow.value.IComparator; |
| import edu.uci.ics.hyracks.api.dataflow.value.IComparatorFactory; |
| import edu.uci.ics.hyracks.dataflow.common.util.ReflectionUtils; |
| |
| public class RawComparingComparatorFactory<T> implements IComparatorFactory<WritableComparable<T>> { |
| private Class<? extends RawComparator> klass; |
| |
| public RawComparingComparatorFactory(Class<? extends RawComparator> klass) { |
| this.klass = klass; |
| } |
| |
| private static final long serialVersionUID = 1L; |
| |
| @Override |
| public IComparator<WritableComparable<T>> createComparator() { |
| final RawComparator instance = ReflectionUtils.createInstance(klass); |
| return new IComparator<WritableComparable<T>>() { |
| @Override |
| public int compare(WritableComparable<T> o1, WritableComparable<T> o2) { |
| return instance.compare(o1, o2); |
| } |
| }; |
| } |
| } |