| /** |
| * 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.mapred.join; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.io.Writable; |
| |
| /** |
| * This defines an interface to a stateful Iterator that can replay elements |
| * added to it directly. |
| * Note that this does not extend {@link java.util.Iterator}. |
| */ |
| @InterfaceAudience.Public |
| @InterfaceStability.Stable |
| public interface ResetableIterator<T extends Writable> |
| extends org.apache.hadoop.mapreduce.lib.join.ResetableIterator<T> { |
| |
| public static class EMPTY<U extends Writable> |
| extends org.apache.hadoop.mapreduce.lib.join.ResetableIterator.EMPTY<U> |
| implements ResetableIterator<U> { |
| } |
| } |