001/*
002 * Copyright (c) 2007-2016 Concurrent, Inc. All Rights Reserved.
003 *
004 * Project and contact information: http://www.cascading.org/
005 *
006 * This file is part of the Cascading project.
007 *
008 * Licensed under the Apache License, Version 2.0 (the "License");
009 * you may not use this file except in compliance with the License.
010 * You may obtain a copy of the License at
011 *
012 *     http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing, software
015 * distributed under the License is distributed on an "AS IS" BASIS,
016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017 * See the License for the specific language governing permissions and
018 * limitations under the License.
019 */
020
021package cascading.flow.planner.iso.expression;
022
023import cascading.flow.FlowElement;
024import cascading.flow.planner.PlannerContext;
025import cascading.flow.planner.graph.ElementGraph;
026import cascading.pipe.Operator;
027
028/**
029 *
030 */
031public class NonSafeOperationExpression extends TypeExpression<Operator>
032  {
033  public NonSafeOperationExpression( ElementCapture capture )
034    {
035    super( capture, Operator.class );
036    }
037
038  public NonSafeOperationExpression( Topo topo )
039    {
040    super( Operator.class, topo );
041    }
042
043  public NonSafeOperationExpression()
044    {
045    super( Operator.class );
046    }
047
048  @Override
049  public boolean applies( PlannerContext flowPlanner, ElementGraph elementGraph, FlowElement flowElement )
050    {
051    boolean applies = super.applies( flowPlanner, elementGraph, flowElement );
052
053    return applies && !( (Operator) flowElement ).getOperation().isSafe();
054    }
055  }