/**
* 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.listbucketingpruner;
import java.util.Map;
import org.apache.hadoop.hive.ql.exec.TableScanOperator;
import org.apache.hadoop.hive.ql.lib.NodeProcessorCtx;
import org.apache.hadoop.hive.ql.metadata.Partition;
import org.apache.hadoop.hive.ql.plan.ExprNodeDesc;
/**
* Context used by list bucketing to walk operator trees to generate expression tree.
*
*/
public class LBOpWalkerCtx implements NodeProcessorCtx {
/**
* Map from tablescan operator to list bucketing pruning descriptor that is
* initialized from the ParseContext.
*/
private final Map<TableScanOperator, Map<String, ExprNodeDesc>> opToPartToLBPruner;
// partition walker working on
private final Partition part;
/**
* Constructor.
*/
public LBOpWalkerCtx(Map<TableScanOperator, Map<String, ExprNodeDesc>> opToPartToLBPruner,
Partition part) {
this.opToPartToLBPruner = opToPartToLBPruner;
this.part = part;
}
/**
* @return the opToPartToLBPruner
*/
public Map<TableScanOperator, Map<String, ExprNodeDesc>> getOpToPartToLBPruner() {
return opToPartToLBPruner;
}
/**
* @return the part
*/
public Partition getPart() {
return part;
}
}