/tags/release-0.1-rc2/hive/external/ql/src/java/org/apache/hadoop/hive/ql/optimizer/pcr/PcrOpWalkerCtx.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.optimizer.pcr;

import java.io.Serializable;
import java.util.List;

import org.apache.hadoop.hive.ql.exec.FilterOperator;
import org.apache.hadoop.hive.ql.exec.Operator;
import org.apache.hadoop.hive.ql.lib.NodeProcessorCtx;
import org.apache.hadoop.hive.ql.parse.ParseContext;

/**
 * Context class for operator tree walker for partition condition remover.
 */
public class PcrOpWalkerCtx implements NodeProcessorCtx {

  static public class OpToDeleteInfo {
    private final Operator<? extends Serializable> parent;
    private final FilterOperator operator;

    public OpToDeleteInfo(Operator<? extends Serializable> parent, FilterOperator operator) {
      super();
      this.parent = parent;
      this.operator = operator;
    }
    public Operator<? extends Serializable> getParent() {
      return parent;
    }
    public FilterOperator getOperator() {
      return operator;
    }
  }

  private final ParseContext parseContext;
  private final List<OpToDeleteInfo> opToRemove;

  /**
   * Constructor.
   */
  public PcrOpWalkerCtx(ParseContext parseContext,
      List<OpToDeleteInfo> opToRemove) {
    this.parseContext = parseContext;
    this.opToRemove = opToRemove;
  }

  public ParseContext getParseContext() {
    return parseContext;
  }

  public List<OpToDeleteInfo> getOpToRemove() {
    return opToRemove;
  }
}