    001/*
    002 * Copyright (c) 2007-2017 Xplenty, 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  }