| /** |
| * 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; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.fs.FileSystem; |
| |
| /** |
| * InputFormat which simulates the absence of input data |
| * by returning zero split. |
| */ |
| public class EmptyInputFormat<K, V> implements InputFormat<K, V> { |
| |
| public InputSplit[] getSplits(JobConf job, int numSplits) throws IOException { |
| return new InputSplit[0]; |
| } |
| |
| public RecordReader<K, V> getRecordReader(InputSplit split, JobConf job, |
| Reporter reporter) throws IOException { |
| return new RecordReader<K,V>() { |
| public boolean next(K key, V value) throws IOException { return false; } |
| public K createKey() { return null; } |
| public V createValue() { return null; } |
| public long getPos() throws IOException { return 0L; } |
| public void close() throws IOException { } |
| public float getProgress() throws IOException { return 0.0f; } |
| }; |
| } |
| } |