/**
* 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.parse;
import java.util.List;
import java.util.Map;
import org.apache.hadoop.hive.ql.exec.Operator;
import org.apache.hadoop.hive.ql.lib.NodeProcessorCtx;
import org.apache.hadoop.hive.ql.plan.OperatorDesc;
/**
* This class implements the context information that is used for typechecking
* phase in query compilation.
*/
public class TableAccessCtx implements NodeProcessorCtx {
/**
* Map of operator id to table and key names.
*/
private final TableAccessInfo tableAccessInfo;
/**
* Constructor.
*/
public TableAccessCtx() {
tableAccessInfo = new TableAccessInfo();
}
public TableAccessInfo getTableAccessInfo() {
return tableAccessInfo;
}
public void addOperatorTableAccess(Operator<? extends OperatorDesc> op,
Map<String, List<String>> tableToKeysMap) {
assert(tableToKeysMap != null);
assert(op != null);
tableAccessInfo.add(op, tableToKeysMap);
}
}