    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.process;
    022
    023import java.util.Iterator;
    024import java.util.List;
    025import java.util.Map;
    026
    027import cascading.flow.FlowElement;
    028import cascading.flow.FlowStep;
    029import cascading.flow.planner.BaseFlowStep;
    030import cascading.flow.planner.FlowPlanner;
    031import cascading.flow.planner.graph.AnnotatedDecoratedElementGraph;
    032import cascading.flow.planner.graph.ElementGraph;
    033import cascading.flow.planner.graph.FlowElementGraph;
    034import cascading.util.EnumMultiMap;
    035
    036public class FlowStepGraph extends BaseProcessGraph<FlowStep>
    037  {
    038  public FlowStepGraph()
    039    {
    040    }
    041
    042  public FlowStepGraph( FlowStepFactory flowStepFactory, FlowElementGraph flowElementGraph, Map<ElementGraph, List<? extends ElementGraph>> nodeSubGraphsMap )
    043    {
    044    this( flowStepFactory, flowElementGraph, nodeSubGraphsMap, null );
    045    }
    046
    047  public FlowStepGraph( FlowStepFactory flowStepFactory, FlowElementGraph flowElementGraph, Map<ElementGraph, List<? extends ElementGraph>> nodeSubGraphsMap, Map<ElementGraph, List<? extends ElementGraph>> pipelineSubGraphsMap )
    048    {
    049    buildGraph( flowStepFactory, flowElementGraph, nodeSubGraphsMap, pipelineSubGraphsMap );
    050
    051    Iterator<FlowStep> iterator = getTopologicalIterator();
    052
    053    int ordinal = 0;
    054    int size = vertexSet().size();
    055
    056    while( iterator.hasNext() )
    057      {
    058      BaseFlowStep flowStep = (BaseFlowStep) iterator.next();
    059
    060      flowStep.setOrdinal( ordinal++ );
    061      flowStep.setName( flowStepFactory.makeFlowStepName( flowStep, size, flowStep.getOrdinal() ) );
    062      }
    063    }
    064
    065  protected void buildGraph( FlowStepFactory flowStepFactory, FlowElementGraph flowElementGraph, Map<ElementGraph, List<? extends ElementGraph>> nodeSubGraphsMap, Map<ElementGraph, List<? extends ElementGraph>> pipelineSubGraphsMap )
    066    {
    067    for( ElementGraph stepSubGraph : nodeSubGraphsMap.keySet() )
    068      {
    069      List<? extends ElementGraph> nodeSubGraphs = nodeSubGraphsMap.get( stepSubGraph );
    070      FlowNodeGraph flowNodeGraph = createFlowNodeGraph( flowStepFactory, flowElementGraph, pipelineSubGraphsMap, nodeSubGraphs );
    071
    072      EnumMultiMap<FlowElement> annotations = flowNodeGraph.getAnnotations();
    073
    074      // pull up annotations
    075      if( !annotations.isEmpty() )
    076        stepSubGraph = new AnnotatedDecoratedElementGraph( stepSubGraph, annotations );
    077
    078      FlowStep flowStep = flowStepFactory.createFlowStep( stepSubGraph, flowNodeGraph );
    079
    080      addVertex( flowStep );
    081      }
    082
    083    bindEdges();
    084    }
    085
    086  protected FlowNodeGraph createFlowNodeGraph( FlowStepFactory flowStepFactory, FlowElementGraph flowElementGraph, Map<ElementGraph, List<? extends ElementGraph>> pipelineSubGraphsMap, List<? extends ElementGraph> nodeSubGraphs )
    087    {
    088    return new FlowNodeGraph( flowStepFactory.getFlowNodeFactory(), flowElementGraph, nodeSubGraphs, pipelineSubGraphsMap );
    089    }
    090  }