/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.hive.ql.hooks;
/**
* A type of hook which triggers before query compilation and after query execution.
*/
public interface QueryLifeTimeHook extends Hook {
/**
* Invoked before a query enters the compilation phase.
*
* @param ctx the context for the hook
*/
void beforeCompile(QueryLifeTimeHookContext ctx);
/**
* Invoked after a query compilation. Note: if 'hasError' is true,
* the query won't enter the following execution phase.
*
* @param ctx the context for the hook
* @param hasError whether any error occurred during compilation.
*/
void afterCompile(QueryLifeTimeHookContext ctx, boolean hasError);
/**
* Invoked before a query enters the execution phase.
*
* @param ctx the context for the hook
*/
void beforeExecution(QueryLifeTimeHookContext ctx);
/**
* Invoked after a query finishes its execution.
*
* @param ctx the context for the hook
* @param hasError whether any error occurred during query execution.
*/
void afterExecution(QueryLifeTimeHookContext ctx, boolean hasError);
}