| /* |
| * 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.pig.pen; |
| |
| import org.apache.pig.impl.logicalLayer.FrontendException; |
| import org.apache.pig.newplan.DependencyOrderWalker; |
| import org.apache.pig.newplan.OperatorPlan; |
| import org.apache.pig.newplan.logical.relational.LOCogroup; |
| import org.apache.pig.newplan.logical.relational.LOJoin; |
| import org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor; |
| |
| public class POOptimizeDisabler extends LogicalRelationalNodesVisitor { |
| |
| public POOptimizeDisabler(OperatorPlan plan) throws FrontendException { |
| super(plan, new DependencyOrderWalker(plan)); |
| } |
| |
| @Override |
| public void visit(LOJoin join) throws FrontendException { |
| // use HASH join only |
| join.resetJoinType(); |
| } |
| |
| @Override |
| public void visit(LOCogroup cg) throws FrontendException { |
| // use regular group only |
| cg.resetGroupType(); |
| } |
| } |