| /** |
| * 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.fs.slive; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| import org.apache.hadoop.mapred.InputFormat; |
| import org.apache.hadoop.mapred.InputSplit; |
| import org.apache.hadoop.mapred.JobConf; |
| import org.apache.hadoop.mapred.RecordReader; |
| import org.apache.hadoop.mapred.Reporter; |
| |
| /** |
| * A input format which returns one dummy key and value |
| */ |
| class DummyInputFormat implements InputFormat<Object, Object> { |
| |
| static class EmptySplit implements InputSplit { |
| public void write(DataOutput out) throws IOException { |
| } |
| |
| public void readFields(DataInput in) throws IOException { |
| } |
| |
| public long getLength() { |
| return 0L; |
| } |
| |
| public String[] getLocations() { |
| return new String[0]; |
| } |
| } |
| |
| public InputSplit[] getSplits(JobConf job, int numSplits) throws IOException { |
| InputSplit[] splits = new InputSplit[numSplits]; |
| for (int i = 0; i < splits.length; ++i) { |
| splits[i] = new EmptySplit(); |
| } |
| return splits; |
| } |
| |
| public RecordReader<Object, Object> getRecordReader(InputSplit split, |
| JobConf job, Reporter reporter) throws IOException { |
| return new RecordReader<Object, Object>() { |
| |
| boolean once = false; |
| |
| public boolean next(Object key, Object value) throws IOException { |
| if (!once) { |
| once = true; |
| return true; |
| } |
| return false; |
| } |
| |
| public Object createKey() { |
| return new Object(); |
| } |
| |
| public Object createValue() { |
| return new Object(); |
| } |
| |
| public long getPos() throws IOException { |
| return 0L; |
| } |
| |
| public void close() throws IOException { |
| } |
| |
| public float getProgress() throws IOException { |
| return 0.0f; |
| } |
| }; |
| } |
| } |