private void dfs(Queue<Map<String, String>> queue, AtomicBoolean flag, PossibleState state)
throws IOException {
if (flag.get()) {
return;
}
TransitionTarget nextState = state.nextState;
// reached end of chart, valid assignment found
if (nextState.getId().equalsIgnoreCase("end")) {
queue.add(state.variables);
if (queue.size() > 10000) {
log.info("Queue size " + queue.size() + ", waiting");
try {
Thread.sleep(500);
} catch (InterruptedException ex) {
log.info("Interrupted ", ex);
}
}
return;
}
// run every action in series
List<Map<String, String>> product = new LinkedList<>();
product.add(new HashMap<>(state.variables));
OnEntry entry = nextState.getOnEntry();
List<Action> actions = entry.getActions();
for (Action action : actions) {
for (CustomTagExtension tagExtension : tagExtensionList) {
if (tagExtension.getTagActionClass().isInstance(action)) {
product = tagExtension.pipelinePossibleStates(action, product);
}
}
}
// go through every transition and see which of the products are valid, recursive searching on
// them
List<Transition> transitions = nextState.getTransitionsList();
for (Transition transition : transitions) {
String condition = transition.getCond();
TransitionTarget target = ((List<TransitionTarget>) transition.getTargets()).get(0);
for (Map<String, String> p : product) {
Boolean pass;
if (condition == null) {
pass = true;
} else {
// scrub the context clean so we may use it to evaluate transition conditional
Context context = this.getRootContext();
context.reset();
// set up new context
for (Map.Entry<String, String> e : p.entrySet()) {
context.set(e.getKey(), e.getValue());
}
// evaluate condition
try {
pass = (Boolean) this.getEvaluator().eval(context, condition);
} catch (SCXMLExpressionException ex) {
pass = false;
}
}
// transition condition satisfied, continue search recursively
if (pass) {
PossibleState result = new PossibleState(target, p);
dfs(queue, flag, result);
}
}
}
}
private DataPipe dfs(
SingleThreadedProcessing singleThreadedProcessing, AtomicBoolean flag, PossibleState state)
throws IOException {
/*if (flag.get()) { // Updates and comments by Shraddha Patel
return;
}*/
TransitionTarget nextState = state.nextState;
// run every action in series
List<Map<String, String>> product = new LinkedList<>();
product.add(new HashMap<String, String>(state.variables));
OnEntry entry = nextState.getOnEntry();
List<Action> actions = entry.getActions();
for (Action action : actions) {
for (CustomTagExtension tagExtension : tagExtensionList) {
if (tagExtension.getTagActionClass().isInstance(action)) {
product = tagExtension.pipelinePossibleStates(action, product);
}
}
}
// go through every transition and see which of the products are valid, recursive searching on
// them
List<Transition> transitions = nextState.getTransitionsList();
for (Transition transition : transitions) {
String condition = transition.getCond();
TransitionTarget target = ((List<TransitionTarget>) transition.getTargets()).get(0);
for (Map<String, String> p : product) {
Boolean pass;
if (condition == null) {
pass = true;
} else {
// scrub the context clean so we may use it to evaluate transition conditional
Context context = this.getRootContext();
context.reset();
// set up new context
for (Map.Entry<String, String> e : p.entrySet()) {
context.set(e.getKey(), e.getValue());
}
// evaluate condition
try {
pass = (Boolean) this.getEvaluator().eval(context, condition);
} catch (SCXMLExpressionException ex) {
pass = false;
}
}
// transition condition satisfied, continue search recursively
if (pass) {
PossibleState result = new PossibleState(target, p);
dfs(singleThreadedProcessing, flag, result);
}
}
}
if (nextState.getId().equalsIgnoreCase("end")) {
System.out.println("State Variables: " + state.variables);
dataPipe =
singleThreadedProcessing.processOutput(state.variables, flag); // Commented this line
}
return dataPipe;
}