How to use

replaceNode

method

in

org.grouplens.grapht.graph.DAGNode

newGraph = newGraph.replaceNode(node, repl, memory);

newGraph = newGraph.replaceNode(node, repl, memory);

DAGNodeBuilder<V,E> bld = newBuilder(label);
for (DAGEdge<V,E> edge: outgoingEdges) {
  DAGNode<V,E> newTail = edge.getTail().replaceNode(node, replacement, memory);
  bld.addEdge(newTail, edge.getLabel());

private void replaceNode(DAGNode<Component,Dependency> old,
             DAGNode<Component,Dependency> repl) {
  Map<DAGNode<Component,Dependency>,
      DAGNode<Component,Dependency>> memory = Maps.newHashMap();
  graph = graph.replaceNode(old, repl, memory);
  // loop over a snapshot of the list, replacing nodes
  Collection<DAGEdge<Component, Dependency>> oldBackEdges = backEdges.values();
  backEdges = HashMultimap.create();
  for (DAGEdge<Component,Dependency> edge: oldBackEdges) {
    DAGNode<Component,Dependency> newHead, newTail;
    newHead = memory.get(edge.getHead());
    if (newHead == null) {
      newHead = edge.getHead();
    }
    newTail = memory.get(edge.getTail());
    if (newTail == null) {
      newTail = edge.getTail();
    }
    DAGEdge<Component,Dependency> newEdge;
    if (newHead.equals(edge.getHead()) && newTail.equals(edge.getTail())) {
      newEdge = edge;
    } else {
      newEdge = DAGEdge.create(newHead, newTail, edge.getLabel());
    }
    backEdges.put(newHead, newEdge);
  }
}