| /* |
| * 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.planner.fragment.contrib; |
| |
| import org.apache.drill.common.exceptions.ExecutionSetupException; |
| import org.apache.drill.exec.physical.base.AbstractPhysicalVisitor; |
| import org.apache.drill.exec.physical.base.PhysicalOperator; |
| import org.apache.drill.exec.physical.base.SubScan; |
| |
| /** |
| * Visitor to renumber operators - needed after materialization is done as some operators may be removed |
| * using @ExtendedMaterializerVisitor |
| * |
| */ |
| public class OperatorIdVisitor extends AbstractPhysicalVisitor<PhysicalOperator, Integer, ExecutionSetupException> { |
| |
| static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(OperatorIdVisitor.class); |
| |
| public static final OperatorIdVisitor INSTANCE = new OperatorIdVisitor(); |
| |
| private OperatorIdVisitor() { |
| |
| } |
| |
| @Override |
| public PhysicalOperator visitSubScan(SubScan subScan, Integer parentOpId) throws ExecutionSetupException { |
| subScan.setOperatorId(Short.MAX_VALUE & parentOpId+1); |
| return subScan; |
| } |
| |
| @Override |
| public PhysicalOperator visitOp(PhysicalOperator op, Integer parentOpId) throws ExecutionSetupException { |
| for(PhysicalOperator child : op){ |
| child.accept(this, parentOpId+1); |
| } |
| op.setOperatorId(Short.MAX_VALUE & parentOpId+1); |
| return op; |
| } |
| |
| } |