/*
* 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.impl.plan.optimizer;
import org.apache.pig.impl.plan.PlanVisitor;
import org.apache.pig.impl.plan.PlanWalker;
import org.apache.pig.impl.plan.VisitorException;
abstract public class RulePlanVisitor extends
PlanVisitor<RuleOperator, RulePlan> {
public RulePlanVisitor(RulePlan plan,
PlanWalker<RuleOperator, RulePlan> walker) {
super(plan, walker);
}
/**
* @param ruleOp
* the rule operator that has to be visited
* @throws VisitorException
*/
protected void visit(RuleOperator ruleOp)
throws VisitorException {
//
// Do Nothing
//
}
}