| /* |
| * 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; |
| |
| import org.apache.wayang.basic.data.Tuple2; |
| import org.apache.wayang.basic.data.Tuple5; |
| import org.apache.wayang.core.function.TransformationDescriptor; |
| import org.apache.wayang.core.plan.wayangplan.UnaryToUnaryOperator; |
| import org.apache.wayang.core.types.DataSetType; |
| |
| /** |
| * This operator applies inequality self join on elements of input datasets. |
| */ |
| public class IESelfJoinOperator<Type0 extends Comparable<Type0>, Type1 extends Comparable<Type1>, Input> |
| extends UnaryToUnaryOperator<Input, Tuple2<Input, Input>> { |
| //protected final int get0Pivot; |
| protected final TransformationDescriptor<Input, Type0> get0Pivot; |
| protected final IEJoinMasterOperator.JoinCondition cond0; |
| //protected final int get0Ref; |
| protected final TransformationDescriptor<Input, Type1> get0Ref; |
| protected final IEJoinMasterOperator.JoinCondition cond1; |
| protected boolean list1ASC; |
| protected boolean list1ASCSec; |
| protected boolean list2ASC; |
| protected boolean list2ASCSec; |
| protected boolean equalReverse; |
| |
| public IESelfJoinOperator(Class<Input> inputTypeClass, |
| TransformationDescriptor<Input, Type0> get0Pivot, IEJoinMasterOperator.JoinCondition cond0, |
| TransformationDescriptor<Input, Type1> get0Ref, IEJoinMasterOperator.JoinCondition cond1) { |
| super(DataSetType.createDefault(inputTypeClass), |
| DataSetType.createDefaultUnchecked(Tuple2.class), |
| false); |
| this.get0Pivot = get0Pivot; |
| this.cond0 = cond0; |
| this.get0Ref = get0Ref; |
| this.cond1 = cond1; |
| assignSortOrders(); |
| } |
| |
| public IESelfJoinOperator(DataSetType<Input> inputType, |
| TransformationDescriptor<Input, Type0> get0Pivot, IEJoinMasterOperator.JoinCondition cond0, |
| TransformationDescriptor<Input, Type1> get0Ref, IEJoinMasterOperator.JoinCondition cond1) { |
| super(inputType, DataSetType.createDefaultUnchecked(Tuple2.class), false); |
| this.get0Pivot = get0Pivot; |
| this.cond0 = cond0; |
| this.get0Ref = get0Ref; |
| this.cond1 = cond1; |
| assignSortOrders(); |
| } |
| |
| public void assignSortOrders() { |
| Tuple5<Boolean, Boolean, Boolean, Boolean, Boolean> sortOrders = IEJoinMasterOperator.getSortOrders(this.cond0, this.cond1); |
| list1ASC = sortOrders.getField0(); |
| list1ASCSec = sortOrders.getField1(); |
| list2ASC = sortOrders.getField2(); |
| list2ASCSec = sortOrders.getField3(); |
| equalReverse = sortOrders.getField4(); |
| } |
| |
| public TransformationDescriptor<Input, Type0> getGet0Pivot() { |
| return this.get0Pivot; |
| } |
| |
| public TransformationDescriptor<Input, Type1> getGet0Ref() { |
| return this.get0Ref; |
| } |
| |
| public IEJoinMasterOperator.JoinCondition getCond0() { |
| return this.cond0; |
| } |
| |
| public IEJoinMasterOperator.JoinCondition getCond1() { |
| return this.cond1; |
| } |
| } |