/** {@inheritDoc} */
@Override
public void handleMessage(Exchange exchange) throws HandlerException {
if (!ExchangePhase.IN.equals(exchange.getPhase())) {
return;
}
Context context = exchange.getContext();
ServiceOperation serviceOperation = exchange.getContract().getServiceOperation();
ProcessActionModel processActionModel = _actionModels.get(serviceOperation.getName());
ProcessActionType processActionType = getProcessActionType(context, processActionModel);
Message messageIn = exchange.getMessage();
Long processInstanceId = null;
ProcessInstance processInstance = null;
switch (processActionType) {
case START_PROCESS:
if (_processId != null) {
Object messageContentIn = messageIn.getContent();
if (messageContentIn != null) {
Map<String, Object> parameters = new HashMap<String, Object>();
parameters.put(_messageContentInName, messageContentIn);
processInstance = _ksession.startProcess(_processId, parameters);
} else {
processInstance = _ksession.startProcess(_processId);
}
processInstanceId = Long.valueOf(processInstance.getId());
} else {
throwNullParameterException(processActionType, PROCESS_ID_VAR);
}
break;
case SIGNAL_EVENT:
String processEventType = getProcessEventType(context, processActionModel);
Object processEvent = getProcessEvent(context, messageIn);
processInstanceId = getProcessInstanceId(context);
if (processInstanceId != null) {
_ksession.signalEvent(processEventType, processEvent, processInstanceId.longValue());
} else {
throwNullParameterException(processActionType, PROCESS_INSTANCE_ID_VAR);
}
break;
case ABORT_PROCESS_INSTANCE:
processInstanceId = getProcessInstanceId(context);
if (processInstanceId != null) {
_ksession.abortProcessInstance(processInstanceId.longValue());
} else {
throwNullParameterException(processActionType, PROCESS_INSTANCE_ID_VAR);
}
break;
}
if (processInstanceId != null) {
context.setProperty(PROCESS_INSTANCE_ID_VAR, processInstanceId, Scope.EXCHANGE);
ExchangePattern exchangePattern = serviceOperation.getExchangePattern();
if (ExchangePattern.IN_OUT.equals(exchangePattern)) {
if (processInstance == null) {
processInstance = _ksession.getProcessInstance(processInstanceId.longValue());
}
Message messageOut = exchange.createMessage();
Object messageContentOut = null;
if (processInstance != null) {
messageContentOut =
((WorkflowProcessInstance) processInstance).getVariable(_messageContentOutName);
}
if (messageContentOut != null) {
messageOut.setContent(messageContentOut);
}
exchange.send(messageOut);
}
}
}
/** {@inheritDoc} */
@Override
public void handleAction(Exchange exchange, KnowledgeAction action) throws HandlerException {
RulesActionType actionType = (RulesActionType) action.getType();
switch (actionType) {
case EXECUTE:
{
KnowledgeSession session = newStatelessSession();
setGlobals(exchange, action, session, true);
List<Object> input = getInputList(exchange, action);
session.getStateless().execute(input);
break;
}
case INSERT:
case FIRE_ALL_RULES:
{
/*
if (!isContinue(exchange)) {
disposeStatefulSession();
}
*/
KnowledgeSession session = getStatefulSession();
setGlobals(exchange, action, session, true);
List<Object> input = getInputList(exchange, action);
for (Object fact : input) {
session.getStateful().insert(fact);
}
if (RulesActionType.FIRE_ALL_RULES.equals(actionType)) {
session.getStateful().fireAllRules();
}
if (isDispose(exchange)) {
disposeStatefulSession();
}
break;
}
case FIRE_UNTIL_HALT:
{
/*
if (!isContinue(exchange)) {
disposeStatefulSession();
}
*/
KnowledgeSession session = getStatefulSession();
setGlobals(exchange, action, session, false);
if (_fireUntilHaltThread == null) {
FireUntilHalt fireUntilHalt = new FireUntilHalt(this, session, getLoader());
session.addDisposals(fireUntilHalt);
_fireUntilHaltThread = fireUntilHalt.startThread();
}
final String undefinedVariable = toVariable(exchange);
Map<String, List<Object>> listMap =
getListMap(exchange, action.getInputExpressionMappings(), true, undefinedVariable);
if (listMap.size() > 0) {
for (Entry<String, List<Object>> entry : listMap.entrySet()) {
String key = entry.getKey();
if (undefinedVariable.equals(key)) {
String id = Strings.trimToNull(action.getId());
if (id != null) {
key = id;
}
}
List<Object> input = entry.getValue();
if (undefinedVariable.equals(key)) {
for (Object fact : input) {
session.getStateful().insert(fact);
}
} else {
SessionEntryPoint sep = session.getStateful().getEntryPoint(key);
if (sep != null) {
for (Object fact : input) {
sep.insert(fact);
}
} else {
throw new HandlerException(
"Unknown entry point: " + sep + "; please check your rules source.");
}
}
}
} else {
Object content = exchange.getMessage().getContent();
if (content != null) {
session.getStateful().insert(content);
}
}
if (isDispose(exchange)) {
disposeStatefulSession();
}
break;
}
default:
{
throw new HandlerException("Unsupported action type: " + actionType);
}
}
Object output = getOutput(exchange, action);
if (ExchangePattern.IN_OUT.equals(
exchange.getContract().getProviderOperation().getExchangePattern())) {
Message message = exchange.createMessage().setContent(output);
exchange.send(message);
}
}
