content: /*
   * 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.asterix.optimizer.rules.cbo.indexadvisor;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.hyracks.algebricks.core.algebra.base.LogicalVariable;
  import org.apache.hyracks.algebricks.core.algebra.operators.logical.DataSourceScanOperator;
  
  public class CBOPlanStateTree {
      private final AbstractAdvisorPlanNode cboPlanNode;
      private final Map<LogicalVariable, DataSourceScanOperator> dataSourceScanVariableMap;
  
      public CBOPlanStateTree(AbstractAdvisorPlanNode cboPlanNode) {
          this.cboPlanNode = cboPlanNode;
          dataSourceScanVariableMap = new HashMap<>();
          for (AdvisorScanPlanNode scanNode : cboPlanNode.getLeafs()) {
              DataSourceScanOperator scanOperator = scanNode.getScanOperator();
              for (LogicalVariable variable : scanOperator.getVariables()) {
                  dataSourceScanVariableMap.put(variable, scanOperator);
              }
          }
      }
  
      public AbstractAdvisorPlanNode getCboPlanNode() {
          return cboPlanNode;
      }
  
      public Map<LogicalVariable, DataSourceScanOperator> getDataSourceScanVariableMap() {
          return dataSourceScanVariableMap;
      }
  
  }
  