Java tutorial
/** * 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.piggybank.squeal.backend.storm.state; import java.util.List; import org.apache.hadoop.io.MapWritable; import org.apache.pig.impl.io.NullableTuple; import org.apache.pig.impl.util.Pair; public abstract class MapIdxWritable<T> extends MapWritable implements IPigIdxState<T> { public abstract List<Pair<List<NullableTuple>, List<NullableTuple>>> getTupleBatches(T last); public String toString() { return this.getClass().getSimpleName() + "@" + this.hashCode() + ": " + this.entrySet(); } }