TableAccessInfo.java

/**
 * 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.LinkedHashMap;
import java.util.List;
import java.util.Map;

import org.apache.hadoop.hive.ql.exec.Operator;
import org.apache.hadoop.hive.ql.plan.OperatorDesc;

public class TableAccessInfo {
  /**
   * Map of operator id to table and key names.
   */
  private final Map<Operator<? extends OperatorDesc>,
    Map<String, List<String>>> operatorToTableAccessMap;

  public TableAccessInfo() {
    // Must be deterministic order map for consistent q-test output across Java versions
    operatorToTableAccessMap =
      new LinkedHashMap<Operator<? extends OperatorDesc>, Map<String, List<String>>>();
  }

  public void add(Operator<? extends OperatorDesc> op,
      Map<String, List<String>> tableToKeysMap) {
    operatorToTableAccessMap.put(op, tableToKeysMap);
  }

  public Map<Operator<? extends OperatorDesc>,
     Map<String, List<String>>> getOperatorToTableAccessMap() {
    return operatorToTableAccessMap;
  }
}