| /* |
| * 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.hadoop.hive.ql; |
| |
| import org.apache.hadoop.hive.ql.hooks.Hook; |
| |
| /** |
| * HiveDriverRunHook allows Hive to be extended with custom |
| * logic for processing commands. |
| * |
| *<p> |
| * |
| * Note that the lifetime of an instantiated hook object is scoped to |
| * the analysis of a single statement; hook instances are never reused. |
| */ |
| public interface HiveDriverRunHook extends Hook { |
| /** |
| * Invoked before Hive begins any processing of a command in the Driver, |
| * notably before compilation and any customizable performance logging. |
| */ |
| public void preDriverRun( |
| HiveDriverRunHookContext hookContext) throws Exception; |
| |
| /** |
| * Invoked after Hive performs any processing of a command, just before a |
| * response is returned to the entity calling the Driver. |
| */ |
| public void postDriverRun( |
| HiveDriverRunHookContext hookContext) throws Exception; |
| } |