How to use

addEdge

method

in

cascading.flow.planner.process.FlowNodeGraph

protected FlowNodeGraph createFlowNodeGraph( List<ElementGraph> elementGraphs )
 {
 ElementGraph mapElementGraph = elementGraphs.get( 0 );
 ElementGraph reduceElementGraph = elementGraphs.size() == 2 ? elementGraphs.get( 1 ) : null;
 FlowNodeGraph flowNodeGraph = new FlowNodeGraph();
 int nodes = elementGraphs.size();
 FlowNode mapperNode = new BaseFlowNode( mapElementGraph, String.format( "(1/%s)", nodes ), 0 );
 flowNodeGraph.addVertex( mapperNode );
 if( nodes == 2 )
  {
  FlowNode reducerNode = new BaseFlowNode( reduceElementGraph, "(2/2)", 1 );
  flowNodeGraph.addVertex( reducerNode );
  flowNodeGraph.addEdge( mapperNode, reducerNode, new ProcessEdge( mapperNode, reducerNode ) );
  }
 return flowNodeGraph;
 }
}

protected FlowNodeGraph createFlowNodeGraph( List<ElementGraph> elementGraphs )
 {
 ElementGraph mapElementGraph = elementGraphs.get( 0 );
 ElementGraph reduceElementGraph = elementGraphs.size() == 2 ? elementGraphs.get( 1 ) : null;
 FlowNodeGraph flowNodeGraph = new FlowNodeGraph();
 int nodes = elementGraphs.size();
 FlowNode mapperNode = new BaseFlowNode( mapElementGraph, String.format( "(1/%s)", nodes ), 0 );
 flowNodeGraph.addVertex( mapperNode );
 if( nodes == 2 )
  {
  FlowNode reducerNode = new BaseFlowNode( reduceElementGraph, "(2/2)", 1 );
  flowNodeGraph.addVertex( reducerNode );
  flowNodeGraph.addEdge( mapperNode, reducerNode, new ProcessEdge( mapperNode, reducerNode ) );
  }
 return flowNodeGraph;
 }
}