/**
* Looks for a topic in the space with the same UUID.
*
* @param baseName The UUID to search for.
* @return If a matching topic exists, that topic is returned, otherwise <code>null</code> is
* returned.
*/
public JMSTopic getTopicById(UUID id) {
JMSTopic template = new JMSTopic();
template.setId(id);
JMSTopic topic = null;
try {
topic = (JMSTopic) space.readIfExists(template, null, 1000);
} catch (RemoteException
| UnusableEntryException
| TransactionException
| InterruptedException e) {
System.err.println("Failed to get topic by ID. Topic ID queried: '" + id.toString() + "'");
e.printStackTrace();
}
return topic;
}
/**
* Whether or not a topic already exists in the space with the same base name or UUID.
*
* @param topic The topic to check if exists
* @param transaction The transaction in which the check will take place
* @return <code>true</code> if a match by either base name or UUID, otherwise <code>false</code>
*/
private boolean topicExistsInSpace(JMSTopic topic, Transaction transaction) {
try {
JMSTopic template = new JMSTopic();
template.setBaseName(topic.getBaseName());
JMSTopic topicBaseNameMatch = (JMSTopic) space.readIfExists(template, transaction, 2000);
template = new JMSTopic();
template.setId(topic.getId());
JMSTopic topicIdMatch = (JMSTopic) space.readIfExists(template, transaction, 2000);
if (topicBaseNameMatch != null || topicIdMatch != null) {
return true;
}
} catch (Exception e) {
e.printStackTrace();
}
return false;
}