Source code

001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.reef.wake.examples.join;
020
021/**
022 * A tuple event consisting key and value pair.
023 */
024public class TupleEvent implements Comparable<TupleEvent> {
025  private final int key;
026  private final String val;
027
028  public TupleEvent(final int key, final String val) {
029    this.key = key;
030    this.val = val;
031  }
032
033  @Override
034  public boolean equals(final Object o) {
035    if (this == o) {
036      return true;
037    }
038    if (o == null || getClass() != o.getClass()) {
039      return false;
040    }
041
042    TupleEvent that = (TupleEvent) o;
043
044    if (key != that.key) {
045      return false;
046    }
047    return val != null ? val.equals(that.val) : that.val == null;
048
049  }
050
051  @Override
052  public int hashCode() {
053    int result = key;
054    result = 31 * result + (val != null ? val.hashCode() : 0);
055    return result;
056  }
057
058  @Override
059  public int compareTo(final TupleEvent o) {
060    final int keycmp = Integer.compare(key, o.key);
061    if (keycmp != 0) {
062      return keycmp;
063    }
064    return val.compareTo(o.val);
065  }
066
067  @Override
068  public String toString() {
069    return "(" + key + ", " + val + ")";
070  }
071
072}