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 ArrayList computeTransitions(State stateVal, String outcome) throws WorkflowException {
if (LOG.isLoggable(Level.FINE)) {
LOG.entering(State.class.getName(), "computeTransitions", outcome);
}
ArrayList results = new ArrayList();
Transition[] transitions = null;
try {
transitions =
ContractsUtils.getTransitionCommand().getTransitionsByFromStateId(stateVal.getId());
for (int i = 0; i < transitions.length; i++) {
Transition tran = transitions[i];
if (tran.match(outcome)) {
results.add(tran);
break;
}
}
// look for Workflow global transitions in the PROP_SET for the workflow
Workflow wf = ContractsUtils.getWorkflowCommand().getWorkflowById(stateVal.getWorkflowId());
GenericPropertySet gps = wf.getPropertySet();
if (gps != null) {
Iterator it = gps.keys();
while (it.hasNext()) {
String name = (String) it.next();
if (name.startsWith("global.transition_")) {
String tranName = gps.getProperty(name);
if (tranName != null) {
String tranOutcome = gps.getProperty("transition." + tranName + ".outcome");
if ((tranOutcome == null && outcome == null) || tranOutcome.equals(outcome)) {
Transition globalTran =
ContractsUtils.getTransitionCommand()
.getTransitionObjectByImplId(
new Integer(gps.getProperty("transition." + tranName + ".implId"))
.intValue());
globalTran.setId(-1);
globalTran.setFromStateId(stateVal.getId());
String toState = gps.getProperty("transition." + tranName + ".toState");
if (toState != null) {
if (toState.equals("_#fromState")) {
globalTran.setToStateId(stateVal.getId());
} else {
globalTran.setToStateId(
new Integer(
ServiceLocator.getInstance()
.getLocal(StateCommandLocal.class)
.getStateByNameAndWorkflowId(toState, wf.getId())
.getId())
.intValue());
}
results.add(globalTran);
} else {
LOG.log(
Level.SEVERE,
"Global transition " + tranName + " does not specify a toState");
}
}
} else {
LOG.log(
Level.SEVERE,
"Global transition key " + name + " does not specify a transition name");
}
}
}
}
if (results.size() == 0) {
Transition defTran =
ContractsUtils.getTransitionCommand()
.getTransitionById(stateVal.getDefaultTransitionId());
if (defTran != null) results.add(defTran);
else
throw new WorkflowException(
"No Transitions exist for this State ["
+ stateVal.getId()
+ "] for outcome: ["
+ outcome
+ "]!");
}
} catch (ApplicationException ae) {
LOG.log(
Level.SEVERE,
"An error occurred while processing transitions from state " + stateVal.getId(),
ae);
throw new WorkflowException(
"An unexpected error occurred while processing the workflow transition: "
+ ae.getMessage());
} catch (Exception e) {
LOG.log(
Level.SEVERE,
"An error occurred while processing transitions from state " + stateVal.getId(),
e);
throw new WorkflowException(
"An unexpected error occurred while processing the workflow transition: "
+ e.getMessage());
}
if (LOG.isLoggable(Level.FINE)) {
LOG.exiting(State.class.getName(), "computeTransitions", String.valueOf(results.size()));
}
return results;
}