| /* |
| * 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.wayang.iejoin.operators.java_helpers; |
| |
| import org.apache.wayang.iejoin.data.Data; |
| import scala.Tuple2; |
| |
| import java.io.Serializable; |
| import java.util.Comparator; |
| |
| /** |
| * Created by khayyzy on 5/28/16. |
| */ |
| public class DataComparator<Type0 extends Comparable<Type0>, Type1 extends Comparable<Type1>, Input> |
| implements Serializable, Comparator<Tuple2<Data<Type0, Type1>, Input>> { |
| |
| private static final long serialVersionUID = 1L; |
| |
| boolean asc1; |
| boolean asc2; |
| |
| public DataComparator(boolean asc1, boolean asc2) { |
| this.asc1 = asc1; |
| this.asc2 = asc2; |
| } |
| |
| public int compare(Tuple2<Data<Type0, Type1>, Input> o1p, Tuple2<Data<Type0, Type1>, Input> o2p) { |
| // first level of sorting |
| Data<Type0, Type1> o1 = o1p._1(); |
| Data<Type0, Type1> o2 = o2p._1(); |
| int dff = 0; |
| if (asc1) { |
| dff = o1.compareTo(o2); |
| } else { |
| dff = o2.compareTo(o1); |
| } |
| // second level of sorting |
| if (dff == 0) { |
| int dff2 = 0; |
| if (asc2) { |
| dff2 = o1.compareRank(o2); |
| } else { |
| dff2 = o2.compareRank(o1); |
| } |
| // third level of sorting |
| if (dff2 == 0) { |
| if ((o1.isPivot() && o2.isPivot()) |
| || (!o1.isPivot() && !o2.isPivot())) { |
| return ((int) o1.getRowID() - (int) o2.getRowID()); |
| } else if (o1.isPivot()) { |
| if (asc1) { |
| return -1; |
| } else { |
| return 1; |
| } |
| } else if (o2.isPivot()) { |
| if (!asc1) { |
| return 1; |
| } else { |
| return -1; |
| } |
| } |
| } |
| return dff2; |
| } |
| return dff; |
| } |
| } |