scala-graph weighted DiEdge based graph json serializer

[Anirudh Vyas]

I am trying to do as follows - 

private val e1 = (a ~%> b) (1.0)
private val e2 = (b ~%> c) (2.0)
private val cyclicalEdge = (c ~%> a) (3.0)
.
g.add(e1)
g.add(e2)
g.add(cyclicalEdge)
private val mainDesc = new Descriptor[SomeNodeType](
  defaultNodeDescriptor = taskNodeDescriptor,
  defaultEdgeDescriptor = WDi.descriptor[SomeNodeType]()
)
private val stringified = g.toJson(mainDesc)
import net.liftweb.json._

val pretty = prettyRender(JsonParser.parse(stringified))
println(s"################# \n $pretty \n ################## \n")
import scalax.collection.io.json._

val tasks: Graph[SavedQueryTaskNode, WDiEdge] = Graph.fromJson[SomeNodeType, WDiEdge](stringified, mainDesc)
println(s"\n###############################################\n TASKS \n ############################################### \n $tasks")
println("traversing graph now ... ")

// you can find if there's a cycle
//println(s"is there a cycle in the graph ?? ${tasks.findCycle}")
def edgeOrdering = tasks.EdgeOrdering(tasks.Edge.WeightOrdering.reverse.compare)

val traverser = (tasks get createSavedQueryTaskNode).innerNodeTraverser.withOrdering(edgeOrdering)
println(s"traverser.toList ### = ${traverser.toList}")

My objective in the end is to traverse graph on ordering of weights of edges. I have one problem - I cannot serialize a weighted graph and I cannot find an example to do so - can someone help? perhaps Peter?

Thanks

Anirudh

[Anirudh Vyas]

BTW - ignore terminology of this - tasks get createSavedQueryTaskNode <-- assume that createSavedQueryTaskNode is root Node.

[Anirudh Vyas]

Anyone? I need to be able to traverse the graph in topological order and execute each node, one at a time.

[Peter Empen]

Hi Anirudh,

concerning JSON serialization of weighted edges, did you check out TJson.scala?

Did you get traversing order right, if not, what are you missing?

Peter