Example 4.1. Basic preparation for calling an analysis algorithm

// 'graph' is of type com.yworks.graph.model.IGraph.

// Create the graph model adapter to get a proper analysis graph structure.
var graphAdapter:YGraphAdapter = new YGraphAdapter(graph);

// The yGraph property returns the com.yworks.yfiles.base.Graph instance that
// corresponds to the given IGraph above.
var isConnected:Boolean = GraphChecker.isConnected(graphAdapter.yGraph);

Example 4.2. Graph analysis with an IGraph-based graph using adapter mechanisms

// 'graph' is of type com.yworks.graph.model.IGraph.

// Create the graph model adapter to get a proper analysis graph structure.
var graphAdapter:YGraphAdapter = new YGraphAdapter(graph);

// Test if the graph is a tree.
if (Trees.isTree(graphAdapter.yGraph)) {
  // Explicitly set the first node from the node set as the root node of the
  // tree.
  // Direct the tree; i.e., revert those edges that point towards the root
  // node.
  var el:EdgeList = Trees.directTreeWithRoot(
      graphAdapter.yGraph,
      graphAdapter.getCopiedNode(INode(graph.nodes.getItemAt(0))));

  // Transfer back the result.
  var el_it:Iterator = graphAdapter.createEdgeIterator(el);
  while (el_it.hasNext()) {
    var e:IEdge = IEdge(el_it.next());
    // Reverse the corresponding edges in the original IGraph.
    graph.setPorts(e, e.targetPort, e.sourcePort);
  }

  // Get the leaf nodes of the tree.
  var nl:NodeList = Trees.getLeafNodes(graphAdapter.yGraph, true);
  var nl_it:Iterator = graphAdapter.createNodeIterator(nl);
}