/**
* 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.optimizer.physical;
import java.util.ArrayList;
import org.apache.hadoop.hive.ql.lib.DefaultGraphWalker;
import org.apache.hadoop.hive.ql.lib.Dispatcher;
import org.apache.hadoop.hive.ql.lib.GraphWalker;
import org.apache.hadoop.hive.ql.lib.Node;
import org.apache.hadoop.hive.ql.optimizer.physical.index.IndexWhereTaskDispatcher;
import org.apache.hadoop.hive.ql.parse.SemanticException;
public class IndexWhereResolver implements PhysicalPlanResolver {
@Override
public PhysicalContext resolve(PhysicalContext physicalContext) throws SemanticException {
Dispatcher dispatcher = new IndexWhereTaskDispatcher(physicalContext);
GraphWalker opGraphWalker = new DefaultGraphWalker(dispatcher);
ArrayList<Node> topNodes = new ArrayList<Node>();
topNodes.addAll(physicalContext.getRootTasks());
opGraphWalker.startWalking(topNodes, null);
return physicalContext;
}
}