/*
* 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();
}
}