Object applyTransaction()

in taverna-server-webapp/src/main/java/org/apache/taverna/server/master/utils/JDOSupport.java [191:226]

• 36 lines of code
• 12 McCabe index (conditional complexity)

		Object applyTransaction(ProceedingJoinPoint pjp, JDOSupport<?> support)
				throws Throwable {
			synchronized (lock) {
				PersistenceManager pm = support.pm();
				int id = ++txid;
				Transaction tx = (pm == null) ? null : pm.currentTransaction();
				if (tx != null && tx.isActive())
					tx = null;
				if (tx != null) {
					if (log.isDebugEnabled())
						log.debug("starting transaction #" + id);
					tx.begin();
				}
				try {
					Object result = pjp.proceed();
					if (tx != null) {
						tx.commit();
						if (log.isDebugEnabled())
							log.debug("committed transaction #" + id);
					}
					tx = null;
					return result;
				} catch (Throwable t) {
					try {
						if (tx != null) {
							tx.rollback();
							if (log.isDebugEnabled())
								log.debug("rolled back transaction #" + id);
						}
					} catch (JDOException e) {
						log.warn("rollback failed unexpectedly", e);
					}
					throw t;
				}
			}
		}