| /* |
| * 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.pig.impl.io; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| import org.apache.pig.backend.hadoop.HDataType; |
| |
| /** |
| * NullablePartitionWritable is an adaptor class around PigNullableWritable that adds a partition |
| * index to the class. |
| */ |
| public class NullablePartitionWritable extends PigNullableWritable{ |
| private int partitionIndex; |
| private PigNullableWritable key; |
| |
| public NullablePartitionWritable() { |
| |
| } |
| |
| public NullablePartitionWritable(PigNullableWritable k) { |
| setKey(k); |
| } |
| |
| public void setKey(PigNullableWritable k) { |
| key = k; |
| } |
| |
| public PigNullableWritable getKey() { |
| return key; |
| } |
| |
| public void setPartition(int n) { |
| partitionIndex = n; |
| } |
| |
| public int getPartition() { |
| return partitionIndex; |
| } |
| |
| @Override |
| public NullablePartitionWritable clone() throws CloneNotSupportedException { |
| NullablePartitionWritable clone = new NullablePartitionWritable(); |
| clone.setKey(this.getKey()); |
| clone.partitionIndex = this.partitionIndex; |
| return clone; |
| } |
| |
| @Override |
| public int compareTo(Object o) { |
| return key.compareTo(((NullablePartitionWritable)o).getKey()); |
| } |
| |
| @Override |
| public void readFields(DataInput in) throws IOException { |
| byte type = in.readByte(); |
| try { |
| key = HDataType.getNewWritableComparable(type); |
| } catch(Exception e) { |
| throw new IOException(e); |
| } |
| key.readFields(in); |
| } |
| |
| @Override |
| public void write(DataOutput out) throws IOException { |
| out.writeByte(HDataType.findTypeFromClassName(key.getClass().getName())); |
| key.write(out); |
| } |
| |
| @Override |
| public boolean isNull() { |
| return key.isNull(); |
| } |
| |
| @Override |
| public void setNull(boolean isNull) { |
| key.setNull(isNull); |
| } |
| |
| @Override |
| public byte getIndex() { |
| return key.getIndex(); |
| } |
| |
| @Override |
| public void setIndex(byte index) { |
| key.setIndex(index); |
| } |
| |
| @Override |
| public Object getValueAsPigType() { |
| return key.getValueAsPigType(); |
| } |
| |
| @Override |
| public int hashCode() { |
| return key.hashCode(); |
| } |
| |
| @Override |
| public String toString() { |
| return "Partition: " + partitionIndex + " " + key.toString(); |
| } |
| } |