On Sun, May 3, 2009 at 5:36 AM, SalmasCM <[email protected]> wrote:
>
> I have been trying for weeks to get things working in my application and am
> not making any progress.
> I don't believe my use case is very unusual and I am hoping that you will be
> able to help me.
>
> 1. I have a lot of legacy data that I load in using the XML import feature.
> Each section is loaded under it's own top level node. The top level nodes
> live directly under root.
> 2. I have 2 workspaces , preview and default. Changes and data loads happen
> in preview and are cloned/merged into default.
>
> Everything works if I bulk load the data with the XML import once but falls
> apart if I load a all the sections into preview and then clone to default
> and then later wish to reload a node with the XML import.
>
> I am unable to reload since it thinks it's a new node so if I reload for
> example employees then it creates employees[1] which is not what I want.
>
> I have then 2 options.
> 1. to force it to recognize the top node as the same node as previously
> loaded, to do this I would have to indicate the UUID for the top node.
> However, I have no idea how to make the UUID in the XML data file the same
> as it would create when reloading?
> 2. So I tried to delete the node from both preview and default workspaces
> before loading. I ran into many issues and finally succeeded in reloading
> the data. However, I ran into issues when I modify any data in preview.
>
> I get
>
> Item cannot be saved because it has been modified externally: node /
> javax.jcr.InvalidItemStateException: Item cannot be saved because it has
> been modified externally: node /
>
> This is the sequence of events.
>
> 1. load data using the XML loading under topNodeA in preview workspace
> 2. I modify some of the data under topNodeA in preview workspace.
> 3. I save the session etc.
> 4. I clone the topNodeA and its subtree to the default space.
> 4. I stop my application server and restart.
> 5. I get a new session into the preview workspace
> 6. I try to delete topNodeA in the preview workspace and then I get the
> above error.
without having seen your code i really can't tell but there might be a
problem in your application logic. when you do restart and connect
to the repository (assuming there isn't any other session interfering),
i can't think of any way how this exception could be triggered.
please provide a simple complete test case and your exact
configuration/setup and i'll have a look what's going wrong.
cheers
stefan
>
> However, I do NOT receive this error when I do the following (do not get out
> of the existing session for that workspace and then subsequently get a new
> one but instead remain in the same session for the delete)
>
> 1. load data using the XML loading under topNodeA in preview workspace
> 2. I modify some of the data under topNodeA in preview workspace.
> 3. I save the session etc.
> 4. I clone the topNodeA and its subtree to the default space.
> 5. I try to delete topNodeA in the preview workspace and then I DO NOT get
> the above error.
>
> I lock the node while making changes like so:
>
> /**
> *
> * @param nodeToSet
> * The node in which to set the property.
> * @param attribute
> * @param value
> */
> public static boolean saveAttribute(Node nodeToSet, String attribute,
> Object value) {
> boolean success = false;
> if ((nodeToSet != null) && (attribute != null) && (value != null)) {
> try {
> synchronized (nodeToSet) {
> boolean iLockedThis=false;
> if (!nodeToSet.isLocked()) {
> nodeToSet.addMixin("mix:lockable");
> session.save();
> nodeToSet.lock(true, true);
> iLockedThis=true;
> }
> if (value instanceof InputStream) {
> nodeToSet.setProperty(attribute, (InputStream)
> value);
> try {
> ((InputStream) value).close();
> } catch (IOException e) {
> getInstance().logger.error("IOException
> in:saveAttribute " + e);
> }
> success = true;
> } else if (value instanceof Calendar) {
> nodeToSet.setProperty(attribute, (Calendar) value);
> success = true;
> } else if (value instanceof String) {
> String stringToSet = (String) value;
> nodeToSet.setProperty(attribute, stringToSet);
> success = true;
> } else if (value instanceof Long) {
> nodeToSet.setProperty(attribute, ((Long)
> value).longValue());
> success = true;
> } else if (value instanceof Integer) {
> nodeToSet.setProperty(attribute, ((Integer)
> value).longValue());
> success = true;
> } else if (value instanceof Double) {
> nodeToSet.setProperty(attribute, ((Double)
> value).doubleValue());
> success = true;
> } else if (value instanceof Boolean) {
> nodeToSet.setProperty(attribute, ((Boolean)
> value).booleanValue());
> success = true;
> }
> if (iLockedThis) {
> session.save();
> nodeToSet.unlock();
> }
> }
> } catch (final javax.jcr.ValueFormatException e) {
> getInstance().logger.error("ValueFormatException
> in:saveAttribute " + e);
> } catch (final javax.jcr.version.VersionException e) {
> getInstance().logger.error("VersionException
> in:saveAttribute " + e);
> } catch (final javax.jcr.lock.LockException e) {
> getInstance().logger.error("LockException in:saveAttribute "
> + e);
> } catch (final javax.jcr.nodetype.ConstraintViolationException
> e) {
>
> getInstance().logger.error("javax.jcr.nodetype.ConstraintViolationException
> in:saveAttribute " + e);
> } catch (final javax.jcr.RepositoryException e) {
> getInstance().logger.error("RepositoryException
> in:saveAttribute " + e);
> }
> }
> return success;
> }
> --
> View this message in context:
> http://www.nabble.com/modified-externally%3A-node---when-deleting-node-tp23352361p23352361.html
> Sent from the Jackrabbit - Users mailing list archive at Nabble.com.
>
>
