| /* |
| * 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.data; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.util.List; |
| import org.apache.pig.classification.InterfaceAudience; |
| |
| /** |
| * This tuple has a faster (de)serialization mechanism. It to be used for |
| * storing intermediate data between Map and Reduce and between MR jobs. |
| * This is for internal pig use only. The serialization format can change, so |
| * do not use it for storing any persistant data (ie in load/store functions). |
| */ |
| @InterfaceAudience.Private |
| public class BinSedesTuple extends DefaultTuple { |
| |
| private static final long serialVersionUID = 1L; |
| private static final InterSedes sedes = InterSedesFactory.getInterSedesInstance(); |
| |
| @Override |
| public void write(DataOutput out) throws IOException { |
| sedes.writeDatum(out, this, DataType.TUPLE); |
| } |
| |
| @Override |
| public void readFields(DataInput in) throws IOException { |
| |
| // Clear our fields, in case we're being reused. |
| mFields.clear(); |
| sedes.addColsToTuple(in, this); |
| } |
| |
| |
| |
| /** |
| * Default constructor |
| */ |
| BinSedesTuple() { |
| super(); |
| } |
| |
| /** |
| * Construct a tuple with a known number of fields. Package level so |
| * that callers cannot directly invoke it. |
| * @param size Number of fields to allocate in the tuple. |
| */ |
| BinSedesTuple(int size) { |
| super(size); |
| } |
| |
| /** |
| * Construct a tuple from an existing list of objects. Package |
| * level so that callers cannot directly invoke it. |
| * @param c List of objects to turn into a tuple. |
| */ |
| BinSedesTuple(List<Object> c) { |
| super(c); |
| } |
| |
| /** |
| * Construct a tuple from an existing list of objects. Package |
| * level so that callers cannot directly invoke it. |
| * @param c List of objects to turn into a tuple. This list will be kept |
| * as part of the tuple. |
| * @param junk Just used to differentiate from the constructor above that |
| * copies the list. |
| */ |
| BinSedesTuple(List<Object> c, int junk) { |
| super(c, junk); |
| } |
| |
| public static Class<? extends TupleRawComparator> getComparatorClass() { |
| return InterSedesFactory.getInterSedesInstance().getTupleRawComparatorClass(); |
| } |
| } |