private HNSubSet getTasksWithEmptyOutputPlaces(int task) {
HNSubSet tasksEmptyOutPlaces;
HNSubSet inputTasks;
int inputTask;
HNSet outputSubsets;
inputTasks = hNet.getAllElementsInputSet(task);
tasksEmptyOutPlaces = new HNSubSet();
for (int iInputTasks = 0; iInputTasks < inputTasks.size(); iInputTasks++) {
inputTask = inputTasks.get(iInputTasks);
outputSubsets = auxMapping.getRelatedSubsets(task, inputTask);
if (outputSubsets != null) {
if (!allSubsetsAreMarked(inputTask, outputSubsets)) {
tasksEmptyOutPlaces.add(inputTask);
}
} else {
tasksEmptyOutPlaces.add(inputTask);
}
}
return tasksEmptyOutPlaces;
}
/**
* Removes one token from the marked output places (subsets) of the tasks in <i>tasks</i> that
* contain <i>element</i>.
*
* @param element element to fire
* @param tasks whose output places point to element
*/
private void removeTokensOutputPlaces(int element, HNSubSet tasks) {
HNSubSet subset = null;
HNSet subsets = null;
Integer tokens = null;
int taskToFire;
int task;
// Checking if element is a start element
if (hNet.getInputSet(element).size() == 0) {
if (startPlace > 0) {
startPlace--;
numberTokens--;
}
} else {
taskToFire = element;
for (int iTasks = 0; iTasks < tasks.size(); iTasks++) {
task = tasks.get(iTasks);
subsets = auxMapping.getRelatedSubsets(taskToFire, task);
if (subsets != null) {
for (int iSubsets = 0; iSubsets < subsets.size(); iSubsets++) {
subset = subsets.get(iSubsets);
tokens = getNumberTokens(task, subset);
if (tokens.intValue() > 0) {
decreaseNumberTokens(task, subset);
numberTokens--;
}
}
}
}
}
}