| /** |
| * 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.sqoop.mapreduce.mainframe; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.hadoop.io.Writable; |
| import org.apache.hadoop.mapreduce.InputSplit; |
| |
| /** |
| * A collection of mainframe datasets. |
| * |
| */ |
| public class MainframeDatasetInputSplit extends InputSplit implements Writable { |
| private List<String> mainframeDatasets; |
| private String currentDataset; |
| private int currentIndex; |
| |
| public MainframeDatasetInputSplit() { |
| mainframeDatasets = new ArrayList<String>(); |
| currentDataset = null; |
| currentIndex = -1; |
| } |
| |
| public void addDataset(String mainframeDataset) { |
| mainframeDatasets.add(mainframeDataset); |
| } |
| |
| public String getCurrentDataset() { |
| return currentDataset; |
| } |
| |
| public String getNextDataset() { |
| if (hasMore()) { |
| currentIndex++; |
| currentDataset = mainframeDatasets.get(currentIndex); |
| } else { |
| currentDataset = null; |
| } |
| return currentDataset; |
| } |
| |
| public boolean hasMore() { |
| return currentIndex < (mainframeDatasets.size() -1); |
| } |
| |
| @Override |
| public long getLength() throws IOException, InterruptedException { |
| return mainframeDatasets.size(); |
| } |
| |
| @Override |
| public String[] getLocations() throws IOException, InterruptedException { |
| return new String[0]; // No locations |
| } |
| |
| @Override |
| public void write(DataOutput dataOutput) throws IOException { |
| dataOutput.writeInt(mainframeDatasets.size()); |
| for (String ds : mainframeDatasets) { |
| dataOutput.writeUTF(ds); |
| } |
| } |
| |
| @Override |
| public void readFields(DataInput dataInput) throws IOException { |
| int numberOfDatasets = dataInput.readInt(); |
| for (int i = 0; i < numberOfDatasets; i++) { |
| mainframeDatasets.add(dataInput.readUTF()); |
| } |
| } |
| } |