| /* |
| * 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.drill.exec.physical.config; |
| |
| import java.util.List; |
| |
| import org.apache.drill.common.expression.LogicalExpression; |
| import org.apache.drill.common.logical.data.Order.Ordering; |
| import org.apache.drill.exec.physical.base.AbstractExchange; |
| import org.apache.drill.exec.physical.base.PhysicalOperator; |
| import org.apache.drill.exec.physical.base.PhysicalOperatorUtil; |
| import org.apache.drill.exec.physical.base.Receiver; |
| import org.apache.drill.exec.physical.base.Sender; |
| |
| import com.fasterxml.jackson.annotation.JsonCreator; |
| import com.fasterxml.jackson.annotation.JsonProperty; |
| import com.fasterxml.jackson.annotation.JsonTypeName; |
| |
| @JsonTypeName("hash-to-merge-exchange") |
| public class HashToMergeExchange extends AbstractExchange { |
| |
| private final LogicalExpression distExpr; |
| private final List<Ordering> orderExprs; |
| |
| @JsonCreator |
| public HashToMergeExchange(@JsonProperty("child") PhysicalOperator child, |
| @JsonProperty("expr") LogicalExpression expr, |
| @JsonProperty("orderings") List<Ordering> orderExprs) { |
| super(child); |
| this.distExpr = expr; |
| this.orderExprs = orderExprs; |
| } |
| |
| @Override |
| public Sender getSender(int minorFragmentId, PhysicalOperator child) { |
| return new HashPartitionSender(receiverMajorFragmentId, child, distExpr, |
| PhysicalOperatorUtil.getIndexOrderedEndpoints(receiverLocations)); |
| } |
| |
| @Override |
| public Receiver getReceiver(int minorFragmentId) { |
| return new MergingReceiverPOP(senderMajorFragmentId, PhysicalOperatorUtil.getIndexOrderedEndpoints(senderLocations), orderExprs, true); |
| } |
| |
| @Override |
| protected PhysicalOperator getNewWithChild(PhysicalOperator child) { |
| return new HashToMergeExchange(child, distExpr, orderExprs); |
| } |
| |
| @JsonProperty("orderExpr") |
| public List<Ordering> getOrderExpressions(){ |
| return orderExprs; |
| } |
| } |