I am using JBossCache 1.3 SP4 with weblogic 8.1 SP4. JBossCache has been
configured to use org.jboss.cache.GenericTransactionManagerLookup - so that the
transaction Manager of weblogic would be used. I am also using a JDBC Cache
Loader configuration
In my code, I have enclosed treeCache.put in a transaction i.e.
tx.begin();
| treeCache.put(.....);
| tx.commit();
What I observe is that even after commit(), records do not get inserted into
database. This is causing a problem next time I try to insert any node on the
same branch.
I did some debugging by checking the source code of the JBossCache. I find the
following code in CacheStoreInterceptor.invoke() -
if (log.isTraceEnabled()) {
| log.trace("CacheStoreInterceptor called with meth " + m);
| }
|
| if (tx_mgr != null && tx_mgr.getTransaction() != null) {
| // we have a tx running.
| log.trace("transactional so don't put stuff in the cloader
yet.");
| GlobalTransaction gtx =
getInvocationContext().getGlobalTransaction();
| if (TreeCache.commitMethod.equals(meth)) {
| if (getInvocationContext().isTxHasMods()) {
| // this is a commit call.
| if (log.isTraceEnabled()) log.trace("Calling
loader.commit() for gtx " + gtx);
| // sync call (a write) on the loader
| List fqnsModified =
getFqnsFromModificationList(tx_table.get(gtx).getModifications());
| obtainLoaderLocks(fqnsModified);
| try
| {
| loader.commit(gtx);
| }
| finally
| {
| releaseLoaderLocks(fqnsModified);
| preparingTxs.remove(gtx);
| }
| if (cache.getUseInterceptorMbeans()&& statsEnabled) {
| Integer puts = (Integer)m_txStores.get(gtx);
| if (puts != null)
| m_cacheStores = m_cacheStores + puts.intValue();
| m_txStores.remove(gtx);
| }
| }
| else {
| log.trace("Commit called with no modifications;
ignoring.");
| }
| }
I turned debug logging on and I observed that the following is printed
org.jboss.cache.interceptors.CacheStoreInterceptor CacheStoreInterceptor called
with meth commit(GlobalTransaction:<127.0.0.1:2081>:1)
However, the next debug output was
org.jboss.cache.interceptors.PessimisticLockInterceptor
PessimisticLockInterceptor invoked for method
commit(GlobalTransaction:<127.0.0.1:2081>:1)
Calling loader.commit() was never printed!!!This means that the commit is not
being called for the loader and the records are not getting stored into the
database. This observation tallies with the results I am getting
Is this a known bug??? If so and if you are planning to fix the problem, I hope
it is released in a future release of JBossCache 1.3 itself since I am not
planning to upgrade to 1.4
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