@Override
public boolean queueQuery(String queueName) throws Exception {
boolean queryResult = false;
QueueQueryResult queueQuery =
serverSession.executeQueueQuery(SimpleString.toSimpleString(queueName));
if (queueQuery.isExists()) {
queryResult = true;
} else {
if (queueQuery.isAutoCreateJmsQueues()) {
serverSession.createQueue(
new SimpleString(queueName), new SimpleString(queueName), null, false, true);
queryResult = true;
} else {
queryResult = false;
}
}
return queryResult;
}
public void init() throws Exception {
AMQServerSession coreSession = session.getCoreSession();
SimpleString selector =
info.getSelector() == null ? null : new SimpleString(info.getSelector());
nativeId = session.getCoreServer().getStorageManager().generateID();
SimpleString address = new SimpleString(this.actualDest.getPhysicalName());
if (this.actualDest.isTopic()) {
String physicalName = this.actualDest.getPhysicalName();
if (physicalName.contains(".>")) {
// wildcard
physicalName = OpenWireUtil.convertWildcard(physicalName);
}
// on recreate we don't need to create queues
address = new SimpleString("jms.topic." + physicalName);
if (info.isDurable()) {
subQueueName =
new SimpleString(
ActiveMQDestination.createQueueNameForDurableSubscription(
true, info.getClientId(), info.getSubscriptionName()));
QueueQueryResult result = coreSession.executeQueueQuery(subQueueName);
if (result.isExists()) {
// Already exists
if (result.getConsumerCount() > 0) {
throw new IllegalStateException(
"Cannot create a subscriber on the durable subscription since it already has subscriber(s)");
}
SimpleString oldFilterString = result.getFilterString();
boolean selectorChanged =
selector == null && oldFilterString != null
|| oldFilterString == null && selector != null
|| oldFilterString != null
&& selector != null
&& !oldFilterString.equals(selector);
SimpleString oldTopicName = result.getAddress();
boolean topicChanged = !oldTopicName.equals(address);
if (selectorChanged || topicChanged) {
// Delete the old durable sub
coreSession.deleteQueue(subQueueName);
// Create the new one
coreSession.createQueue(address, subQueueName, selector, false, true);
}
} else {
coreSession.createQueue(address, subQueueName, selector, false, true);
}
} else {
subQueueName = new SimpleString(UUID.randomUUID().toString());
coreSession.createQueue(address, subQueueName, selector, true, false);
}
coreSession.createConsumer(nativeId, subQueueName, null, info.isBrowser(), false, -1);
} else {
SimpleString queueName = new SimpleString("jms.queue." + this.actualDest.getPhysicalName());
coreSession.createConsumer(nativeId, queueName, selector, info.isBrowser(), false, -1);
}
if (info.isBrowser()) {
AMQServerConsumer coreConsumer = coreSession.getConsumer(nativeId);
coreConsumer.setBrowserListener(this);
}
}