private void createArc(JSONObject modelElement, int index) throws JSONException {
String resourceId = modelElement.getString("resourceId");
// Getting source and target of the arc
String target = getArcRelation().getTargetValue(resourceId);
String source = getArcRelation().getSourceValue(resourceId);
String arcId = "ID" + (5000 + index * 10);
String transend, placeend, orientation;
// Setting the orientation of the arc
if (isTransition(target)) {
transend = target;
placeend = source;
orientation = "PtoT";
} else {
transend = source;
placeend = target;
orientation = "TtoP";
}
modelElement.put("transend", transend);
modelElement.put("placeend", placeend);
modelElement.put("orientation", orientation);
CPNArc arc = new CPNArc();
arc.setId(arcId);
arc.parse(modelElement);
arc.positionAnnotation(getNodePositions());
arc.organizeBendpoints();
getArcs().add(arc);
}
public static void registerMapping(XStream xstream) {
// In the XML the class is represented as a page - tag
xstream.alias("page", CPNPage.class);
xstream.useAttributeFor(CPNPage.class, "idattri");
xstream.aliasAttribute(CPNPage.class, "idattri", "id");
// In order not to display the places / transitions / arcs tag, but simply show
// the page tags one after another.
xstream.addImplicitCollection(CPNPage.class, "places", CPNPlace.class);
xstream.addImplicitCollection(CPNPage.class, "transitions", CPNTransition.class);
xstream.addImplicitCollection(CPNPage.class, "arcs", CPNArc.class);
// Sometimes XStream cannot translate elements into a XML structure.
// Therefore exists the possibility to create and register a converter for that element.
xstream.registerConverter(new CPNTextConverter());
// These instance variables are not needed for the mapping, that's why they are excluded
xstream.omitField(CPNPage.class, "arcRelation");
xstream.omitField(CPNPage.class, "nodePositions");
// Giving all fields a concrete name for the XML
xstream.aliasField("Aux", CPNPage.class, "auxtag");
xstream.aliasField("group", CPNPage.class, "grouptag");
xstream.aliasField("vguidelines", CPNPage.class, "vguidelines");
xstream.aliasField("hguidelines", CPNPage.class, "hguidelines");
CPNPageattr.registerMapping(xstream);
CPNModellingThing.registerMapping(xstream);
CPNPlace.registerMapping(xstream);
CPNTransition.registerMapping(xstream);
CPNArc.registerMapping(xstream);
CPNLittleProperty.registerMapping(xstream);
}
public void readJSONchildShapes(JSONObject modelElement) throws JSONException {
// See the comment in the first line
// Creating a queue
JSONArray arcs = new JSONArray();
// Get all childshapes
JSONArray childShapes = modelElement.optJSONArray("childShapes");
if (childShapes != null) {
int i;
for (i = 0; i < childShapes.length(); i++) {
JSONObject childShape = childShapes.getJSONObject(i);
String stencil = childShape.getJSONObject("stencil").getString("id");
// Looking whether it is a transition, place or an arc
if (CPNTransition.handlesStencil(stencil)) createTransition(childShape, i);
else if (CPNPlace.handlesStencil(stencil)) createPlace(childShape, i);
// Putting every arc in the queue in order to wait that every
// place and transition is mapped.
else if (CPNArc.handlesStencil(stencil)) arcs.put(childShape);
}
// After every place and transition is mapped,
// we can begin to map the arcs in the queue.
for (i = 0; i < arcs.length(); i++) createArc(arcs.getJSONObject(i), i);
}
}
