| /* |
| * 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.flink.optimizer.operators; |
| |
| import org.apache.flink.api.common.operators.util.FieldList; |
| import org.apache.flink.optimizer.CompilerException; |
| import org.apache.flink.optimizer.dag.TwoInputNode; |
| import org.apache.flink.optimizer.dataproperties.LocalProperties; |
| import org.apache.flink.optimizer.dataproperties.RequestedLocalProperties; |
| import org.apache.flink.optimizer.plan.Channel; |
| import org.apache.flink.optimizer.plan.DualInputPlanNode; |
| import org.apache.flink.optimizer.util.Utils; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| public abstract class AbstractSortMergeJoinDescriptor extends AbstractJoinDescriptor { |
| |
| public AbstractSortMergeJoinDescriptor(FieldList keys1, FieldList keys2) { |
| super(keys1, keys2); |
| } |
| |
| public AbstractSortMergeJoinDescriptor(FieldList keys1, FieldList keys2, |
| boolean broadcastFirstAllowed, boolean broadcastSecondAllowed, boolean repartitionAllowed) { |
| super(keys1, keys2, broadcastFirstAllowed, broadcastSecondAllowed, repartitionAllowed); |
| } |
| |
| @Override |
| protected List<LocalPropertiesPair> createPossibleLocalProperties() { |
| RequestedLocalProperties sort1 = new RequestedLocalProperties(Utils.createOrdering(this.keys1)); |
| RequestedLocalProperties sort2 = new RequestedLocalProperties(Utils.createOrdering(this.keys2)); |
| return Collections.singletonList(new LocalPropertiesPair(sort1, sort2)); |
| } |
| |
| @Override |
| public boolean areCoFulfilled(RequestedLocalProperties requested1, RequestedLocalProperties requested2, |
| LocalProperties produced1, LocalProperties produced2) { |
| int numRelevantFields = this.keys1.size(); |
| return checkSameOrdering(produced1, produced2, numRelevantFields); |
| } |
| |
| @Override |
| public DualInputPlanNode instantiate(Channel in1, Channel in2, TwoInputNode node) { |
| boolean[] inputOrders = in1.getLocalProperties().getOrdering().getFieldSortDirections(); |
| |
| if (inputOrders == null || inputOrders.length < this.keys1.size()) { |
| throw new CompilerException("BUG: The input strategy does not sufficiently describe the sort orders for a merge operator."); |
| } else if (inputOrders.length > this.keys1.size()) { |
| boolean[] tmp = new boolean[this.keys1.size()]; |
| System.arraycopy(inputOrders, 0, tmp, 0, tmp.length); |
| inputOrders = tmp; |
| } |
| |
| String nodeName = String.format("%s(%s)", getNodeName(), node.getOperator().getName()); |
| return new DualInputPlanNode(node, nodeName, in1, in2, getStrategy(), this.keys1, this.keys2, inputOrders); |
| } |
| |
| @Override |
| public LocalProperties computeLocalProperties(LocalProperties in1, LocalProperties in2) { |
| LocalProperties comb = LocalProperties.combine(in1, in2); |
| return comb.clearUniqueFieldSets(); |
| } |
| |
| protected abstract String getNodeName(); |
| } |