org.apache.hadoop.hive.ql.parse.CBOPlan Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hive.ql.parse;
import org.apache.calcite.rel.RelNode;
/**
* Wrapper of Calcite plan.
*/
public class CBOPlan {
private final ASTNode ast;
private final RelNode plan;
private final String invalidAutomaticRewritingMaterializationReason;
public CBOPlan(ASTNode ast, RelNode plan, String invalidAutomaticRewritingMaterializationReason) {
this.ast = ast;
this.plan = plan;
this.invalidAutomaticRewritingMaterializationReason = invalidAutomaticRewritingMaterializationReason;
}
public ASTNode getAst() {
return ast;
}
/**
* Root node of plan.
* @return Root {@link RelNode}
*/
public RelNode getPlan() {
return plan;
}
/**
* Returns an error message if this plan can not be a definition of a Materialized view which is an input of
* Calcite based materialized view query rewrite.
* Null or empty string otherwise.
* @return String contains error message or null.
*/
public String getInvalidAutomaticRewritingMaterializationReason() {
return invalidAutomaticRewritingMaterializationReason;
}
}