Stefan:
I do have a clustered environment. Not only this but my application is
running in BEA Weblogic which tends to spawn a variety of threads. What do
you mean when you say "one session/thread"? I am synchronizing and locking.
Could you let me know if it is possible to use Jackrabbit in an application
server environment and perhaps a small example of how I should be
synchronizing and locking?
Right now my code looks like this:
String topName =
DAOFactory.getInstance().getTopLevelNodeNameForType(type);
removeTopLevelNode(topName);
Session preview =
JCRConnectionUtil.getInstance().getNewSession(ConnectionManager.PREVIEW_WORKSPACE);
previewRoot = preview.getRootNode();
// JCRUtil.getInstance().lockNode(previewRoot, preview);
dataLocation = EnvironmentUtil.getDataLoadDir();
xmlDataLocation = dataLocation + "xml/";
String fileName = xmlDataLocation + topName + ".xml";
logger.info("loading " + fileName);
InputStream stream = CommonUtil.getFile(fileName);
preview.getWorkspace().importXML("/", stream,
ImportUUIDBehavior.IMPORT_UUID_CREATE_NEW);
preview.save();
Node nodeToLock = previewRoot.getNode(topName);
synchronized (nodeToLock) {
JCRUtil.getInstance().lockNode(nodeToLock, preview);
Session prod =
JCRConnectionUtil.getInstance().getNewSession(ConnectionManager.PRODUCTION_WORKSPACE);
prod.save();
prod.getWorkspace().clone(ConnectionManager.PREVIEW_WORKSPACE, "/" +
topName, "/" + topName, true);
prod.save();
JCRUtil.getInstance().unlockNode(nodeToLock);
preview.logout();
prod.logout();
}
public void lockNode(Node node, Session session) {
try {
String nodeWSName = node.getSession().getWorkspace().getName();
String sessionWSName = session.getWorkspace().getName();
logLockPath(node);
if (sessionWSName.equals(nodeWSName)) {
if (node != null && session != null && !node.isLocked()) {
node.addMixin(LOCKABLE_MIXIN);
node.getSession().save();
for (int i = 0; i < MAX_LOCK_UNLOCK_TRIES; i++) {
node.lock(false, true);
if (node.isLocked()) {
break;
}
Thread.sleep(LOCK_UNLOCK_TRIES_SLEEP_INTERVAL);
}
node.getSession().save();
if (!node.isLocked()) {
throw new LockException("Cannot grab lock for node
");
}
}
} else {
getInstance().logger.error("MISMATCHED WORKSPACE!!!: node="
+
nodeWSName + " sessionWSName " + sessionWSName);
}
} catch (NoSuchNodeTypeException e) {
getInstance().logger.error("JCRUtil:lockNode
in:NoSuchNodeTypeException: " + e);
} catch (VersionException e) {
getInstance().logger.error("JCRUtil:lockNode
in:VersionException: " + e);
} catch (ConstraintViolationException e) {
getInstance().logger.error("JCRUtil:lockNode
in:ConstraintViolationException: " + e);
} catch (LockException e) {
getInstance().logger.error("JCRUtil:lockNode in:LockException: "
+ e);
} catch (UnsupportedRepositoryOperationException e) {
getInstance().logger.error("JCRUtil:lockNode
in:UnsupportedRepositoryOperationException: " + e);
} catch (AccessDeniedException e) {
getInstance().logger.error("JCRUtil:lockNode
in:AccessDeniedException: " + e);
} catch (InvalidItemStateException e) {
getInstance().logger.error("JCRUtil:lockNode
in:InvalidItemStateException: " + e);
} catch (RepositoryException e) {
getInstance().logger.error("JCRUtil:lockNode
in:RepositoryException: " + e);
} catch (InterruptedException e) {
getInstance().logger.error("JCRUtil:lockNode
in:InterruptedException: " + e);
}
}
public void unlockNode(Node node) {
try {
if (node != null && node.isLocked()) {
for (int i = 0; i < MAX_LOCK_UNLOCK_TRIES; i++) {
node.unlock();
if (!node.isLocked()) {
break;
}
Thread.sleep(LOCK_UNLOCK_TRIES_SLEEP_INTERVAL);
}
if (node.isLocked()) {
throw new LockException("Cannot unlock node ");
}
}
} catch (UnsupportedRepositoryOperationException e) {
getInstance().logger.error("JCRUtil:UnsupportedRepositoryOperationException
in:unlockNode: " + e);
} catch (LockException e) {
getInstance().logger.error("JCRUtil:LockException in:unlockNode:
" + e);
} catch (AccessDeniedException e) {
getInstance().logger.error("JCRUtil:AccessDeniedException
in:unlockNode: " + e);
} catch (InvalidItemStateException e) {
getInstance().logger.error("JCRUtil:InvalidItemStateException
in:unlockNode: " + e);
} catch (RepositoryException e) {
getInstance().logger.error("JCRUtil:RepositoryException
in:unlockNode: " + e);
} catch (InterruptedException e) {
getInstance().logger.error("JCRUtil:lockNode
in:InterruptedException: " + e);
}
}
Stefan Guggisberg wrote:
>
> On Tue, May 5, 2009 at 4:56 PM, SalmasCM <[email protected]> wrote:
>>
>> The following errors.
>>
>> failed to build path of dd740ff8-5108-40f2-9036-b6c769c86bd5:
>> cafebabe-cafe-babe-cafe-babecafebabe has no child entry for
>> dd740ff8-5108-40f2-9036-b6c769c86bd5
>> javax.jcr.ItemNotFoundException: failed to build path of
>> dd740ff8-5108-40f2-9036-b6c769c86bd5:
>> cafebabe-cafe-babe-cafe-babecafebabe
>> has no child entry for dd740ff8-5108-40f2-9036-b6c769c86bd5
>
> assuming jcr sessions are used correctly (i.e. not shared among
> multiple threads)
> you should never see such an exception in a non-clustered jackrabbit
> setup.
>
> it might be a CachingHierarchyManager bug. please create a jira issue
> and provide
> a simple test case for your problem. please also include detailed
> information about
> your setup/environment.
>
> thanks
> stefan
>
>> at
>> org.apache.jackrabbit.core.HierarchyManagerImpl.buildPath(HierarchyManagerImpl.java:289)
>> at
>> org.apache.jackrabbit.core.CachingHierarchyManager.buildPath(CachingHierarchyManager.java:195)
>> at
>> org.apache.jackrabbit.core.HierarchyManagerImpl.buildPath(HierarchyManagerImpl.java:278)
>> at
>> org.apache.jackrabbit.core.CachingHierarchyManager.buildPath(CachingHierarchyManager.java:195)
>> at
>> org.apache.jackrabbit.core.HierarchyManagerImpl.getPath(HierarchyManagerImpl.java:393)
>> at
>> org.apache.jackrabbit.core.CachingHierarchyManager.getPath(CachingHierarchyManager.java:229)
>> at
>> org.apache.jackrabbit.core.ItemImpl.getPrimaryPath(ItemImpl.java:213)
>> at
>> org.apache.jackrabbit.core.NodeImpl.getPrimaryPath(NodeImpl.java:3240)
>> at org.apache.jackrabbit.core.ItemImpl.getPath(ItemImpl.java:1273)
>> at
>> com.ashland.valvoline.ui.util.JCRUtil.getNodePath(JCRUtil.java:2353)
>>
>>
>>
>> Alexander Klimetschek wrote:
>>>
>>> On Tue, May 5, 2009 at 4:08 PM, SalmasCM <[email protected]>
>>> wrote:
>>>>
>>>> The reason I think its the index is because if I:
>>>>
>>>> 1. Load a file in from XML import under /nodeA in workspace 1.
>>>> 2. Clone nodeA to workspace2
>>>> 2. Exit my application.
>>>> 3. Delete nodeA from workspace 1 and 2
>>>> 4. Reload a file in from XML import.
>>>> 5. Do a XPATH query for a node in the imported data I get errors.
>>>
>>> What errors?
>>>
>>> Regards,
>>> Alex
>>>
>>> --
>>> Alexander Klimetschek
>>> [email protected]
>>>
>>>
>>
>> --
>> View this message in context:
>> http://www.nabble.com/modified-externally%3A-node---when-deleting-node-tp23352361p23389174.html
>> Sent from the Jackrabbit - Users mailing list archive at Nabble.com.
>>
>>
>
>
--
View this message in context:
http://www.nabble.com/modified-externally%3A-node---when-deleting-node-tp23352361p23419439.html
Sent from the Jackrabbit - Users mailing list archive at Nabble.com.
