/tags/release-0.0.0-rc0/hive/external/ql/src/java/org/apache/hadoop/hive/ql/plan/ConditionalResolver.java
Java | 43 lines | 8 code | 5 blank | 30 comment | 0 complexity | 0924146289dc90c3a9616140a834e309 MD5 | raw file
Possible License(s): Apache-2.0, BSD-3-Clause, JSON, CPL-1.0
- /**
- * 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.plan;
- import java.io.Serializable;
- import java.util.List;
- import org.apache.hadoop.hive.conf.HiveConf;
- import org.apache.hadoop.hive.ql.exec.Task;
- /**
- * Conditional task resolution interface. This is invoked at run time to get the
- * task to invoke. Developers can plug in their own resolvers.
- */
- public interface ConditionalResolver {
- /**
- * All conditional resolvers implement this interface.
- *
- * @param conf
- * configuration
- * @param ctx
- * opaque context
- * @return position of the task
- */
- List<Task<? extends Serializable>> getTasks(HiveConf conf, Object ctx);
- }