Action in vertex not taken into account

[Eric Poiseau]

I have a model created using the studio. Actions specified in edges are taken into account. Actions specified in Vertex are not taken into account. I have used the same command for the action both in vertex and edges. The action is similar to this one (setting a variable to a value)

test=true;

So the question is : Are actions in vertex taken into account ?
See attached example.

test.json.txt

[Kristian Karl]

I believe GraphWalker is evaluating the expression test=true; after the evaluation of which out edges are available.
So in other words, actions are executed as the last thing done in an element.

[Jonathan Lecher]

It seems that actions in vertices are lost, after model.build()
In JsonContextFactory.java line 155, maybe it's a bug.

  public List<Context> create(String jsonStr) {
    List<Context> contexts = new ArrayList<>();
    JsonMultimodel jsonMultimodel = new Gson().fromJson(jsonStr, JsonMultimodel.class);

    if (isNull(jsonMultimodel) || isNull(jsonMultimodel.getModels())) {
      throw new ContextFactoryException("The json file is not a valid GraphWalker model(s) file");
    }

    // Seed the [global] singleton random generator, if any seed was set in the json file
    if (jsonMultimodel.getSeed() != null) {
      SingletonRandomGenerator.setSeed(jsonMultimodel.getSeed());
    }

    for (JsonModel jsonModel : jsonMultimodel.getModels()) {
      JsonContext context = new JsonContext();
      Model model = jsonModel.getModel();

      context.setModel(model.build()); // after this line, actions in vertices are lost.
      if (jsonModel.getGenerator() != null) {
        context.setPathGenerator(GeneratorFactory.parse(jsonModel.getGenerator()));
      }
      for (Element element : context.getModel().getElements()) {
        if (element.getId().equals(jsonModel.getStartElementId())) {
          context.setNextElement(element);
          break;
        }
      }
      contexts.add(context);
    }

    return contexts;
  }

[Kristian Karl]

Indeed, It's a bug. Good catch @xiechunhong , thanks!

Setting actions are missing in:

graphwalker-project/graphwalker-io/src/main/java/org/graphwalker/io/factory/json/JsonVertex.java

Lines 67 to 83 in c8d1910

 public void setVertex(Vertex.RuntimeVertex vertex) { 
   id = vertex.getId(); 
   name = vertex.getName(); 
   sharedState = vertex.getSharedState(); 
  
   if (vertex.hasRequirements()) { 
     requirements = new ArrayList<>(); 
     for (Requirement requirement : vertex.getRequirements()) { 
       requirements.add(requirement.getKey()); 
     } 
   } 
  
   if (vertex.hasProperties()) { 
     properties = new HashMap<>(); 
     properties.putAll(vertex.getProperties()); 
   } 
 } 

I'll fix it during the day.

[Kristian Karl]

I created a PR #233 .

[Jonathan Lecher]

Super fast response! @KristianKarl
Another thing:
In graphwalker-core SimpleMachine.java，the execute method for vertex, there is no actions execution call (just like the first line in edge execute method), could it be another bug, or it is just as designed?
private void execute(RuntimeVertex vertex) (line 303)

  private void execute(RuntimeEdge edge) {
    execute(edge.getActions()); // this line will execute the actions defined in edge
    if (edge.hasName()) {
      getCurrentContext().execute(edge.getName());
    }
  }

  private void execute(List<Action> actions) {
    for (Action action : actions) {
      getCurrentContext().execute(action);
    }
  }

  private void execute(RuntimeVertex vertex) {
    // maybe vertex also need to execute the actions here
    if (vertex.hasName()) {
      getCurrentContext().execute(vertex.getName());
    }
  }

[Jonathan Lecher]

OK, I see your changes of the code, the issue (vertex doesn't execute the actions in SimpleMachine.java) I mentioned at the above comment is fixed! Great work! @KristianKarl

[Kristian Karl]

The fix is available now in the latest 4.3.0-SNAPSHOT version, which is available here: https://github.com/GraphWalker/graphwalker-project/releases/tag/LATEST-BUILDS