| /** |
| * 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.hadoop.record; |
| |
| import org.apache.hadoop.io.WritableComparable; |
| import org.apache.hadoop.io.WritableComparator; |
| |
| /** |
| * A raw record comparator base class |
| */ |
| public abstract class RecordComparator extends WritableComparator { |
| |
| /** |
| * Construct a raw {@link Record} comparison implementation. */ |
| protected RecordComparator(Class<? extends WritableComparable> recordClass) { |
| super(recordClass); |
| } |
| |
| // inheric JavaDoc |
| public abstract int compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2); |
| |
| /** |
| * Register an optimized comparator for a {@link Record} implementation. |
| * |
| * @param c record classs for which a raw comparator is provided |
| * @param comparator Raw comparator instance for class c |
| */ |
| public static synchronized void define(Class c, RecordComparator comparator) { |
| WritableComparator.define(c, comparator); |
| } |
| } |