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.algebra.operators;
  
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.List;
  
  import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
  import org.apache.hyracks.algebricks.core.algebra.base.LogicalVariable;
  import org.apache.hyracks.algebricks.core.algebra.operators.logical.AbstractDelegatedLogicalOperator;
  import org.apache.hyracks.algebricks.core.algebra.operators.logical.IOperatorDelegate;
  import org.apache.hyracks.algebricks.core.algebra.visitors.ILogicalExpressionReferenceTransform;
  
  public class CommitOperator extends AbstractDelegatedLogicalOperator {
  
      private List<LogicalVariable> primaryKeyLogicalVars;
      private boolean isSink;
  
      public CommitOperator(boolean isSink) {
          this.isSink = isSink;
          primaryKeyLogicalVars = new ArrayList<>();
      }
  
      public CommitOperator(List<LogicalVariable> primaryKeyLogicalVars, boolean isSink) {
          this.primaryKeyLogicalVars = primaryKeyLogicalVars;
          this.isSink = isSink;
      }
  
      public List<LogicalVariable> getPrimaryKeyLogicalVars() {
          return this.primaryKeyLogicalVars;
      }
  
      @Override
      public boolean isMap() {
          return false;
      }
  
      public boolean isSink() {
          return isSink;
      }
  
      public void setSink(boolean isSink) {
          this.isSink = isSink;
      }
  
      //Provided for Extensions but not used by core
      public void setVars(List<LogicalVariable> primaryKeyLogicalVars) {
          this.primaryKeyLogicalVars = primaryKeyLogicalVars;
      }
  
      @Override
      public IOperatorDelegate newInstance() {
          return new CommitOperator(primaryKeyLogicalVars, isSink);
      }
  
      @Override
      public boolean acceptExpressionTransform(ILogicalExpressionReferenceTransform transform)
              throws AlgebricksException {
          return false;
      }
  
      @Override
      public String toString() {
          return "commit";
      }
  
      @Override
      public void getUsedVariables(Collection<LogicalVariable> usedVars) {
          usedVars.addAll(primaryKeyLogicalVars);
      }
  
      @Override
      public void getProducedVariables(Collection<LogicalVariable> producedVars) {
          // No produced variables.
      }
  }
  