/*
* 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.tajo.engine.planner.global.rewriter;
import org.apache.tajo.OverridableConf;
import org.apache.tajo.engine.planner.global.MasterPlan;
import org.apache.tajo.exception.TajoException;
/**
* A rewrite rule for global plans
*/
public interface GlobalPlanRewriteRule {
/**
* Return rule name
* @return Rule name
*/
String getName();
/**
* Check if this rule should be applied.
*
* @param queryContext Query context
* @param plan Global Plan
* @return
*/
boolean isEligible(OverridableConf queryContext, MasterPlan plan);
/**
* Rewrite a global plan
*
* @param plan Global Plan
* @return
*/
MasterPlan rewrite(OverridableConf queryContext, MasterPlan plan) throws TajoException;
}