/*
* This could be made a whole lot faster using a recursive query or some other techniques, but due to the caching and,
* generally speaking, the relatively flat nature of the state machine this shouldn't be expensive.
*/
public State[] getConcreteDescendentStates(int[] stateIds) throws ApplicationException {
if (stateIds == null) {
return null;
}
if (stateIds.length == 0) {
return new State[0];
}
ArrayList results = new ArrayList();
for (int i = 0; i < stateIds.length; i++) {
ArrayList childrenOfState = (ArrayList) cache.get("descendents/" + stateIds[i]);
if (childrenOfState == null) {
childrenOfState = new ArrayList();
State state = this.getStateById(stateIds[i]);
if (!state.isAbstract()) {
childrenOfState.add(state);
}
ArrayList children = StateManager.getStatesByParentId(state.getId());
int[] childrenIds = new int[children.size()];
for (int j = 0; j < children.size(); j++) {
childrenIds[j] = ((State) children.get(j)).getId();
}
childrenOfState.addAll(Arrays.asList(getConcreteDescendentStates(childrenIds)));
if (!childrenOfState.isEmpty()) {
cache.put("descendents/" + stateIds[i], childrenOfState);
}
}
results.addAll(childrenOfState);
}
return (State[]) ArrayUtils.toTypedArray(results, State.class);
}
public State getStateById(int id) throws ApplicationException {
State state = (State) cache.get(id);
if (state == null) {
state = StateManager.getStateById(id);
if (state != null) {
cache.put(id, state);
cache.put("<workflow>=" + state.getWorkflowId() + "/<name>=" + state.getName(), state);
}
}
return state;
}
public State[] getStatesByWorkflowId(int worflowId) throws ApplicationException {
ArrayList list = StateManager.getStatesByWorkflowId(worflowId);
State[] result = new State[list.size()];
for (int i = 0; i < list.size(); i++) {
State current = (State) list.get(i);
if (current != null) {
cache.put(current.getId(), current);
}
result[i] = current;
}
return result;
}
public State getStateByNameAndWorkflowId(String name, int workflowId)
throws ApplicationException {
String key = "<workflow>=" + workflowId + "/<name>=" + name;
State state = (State) cache.get(key);
if (state == null) {
state = StateManager.getStateByNameAndWorkflowId(name, workflowId);
if (state != null) {
cache.put(key, state);
cache.put(state.getId(), state);
}
}
return state;
}
public State getStateByCurrentBreadcrumbId(int breadcrumbId) throws ApplicationException {
return StateManager.getStateByCurrentBreadcrumbId(breadcrumbId);
}