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https://issues.apache.org/jira/browse/JCR-3131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13140163#comment-13140163
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Julian Reschke commented on JCR-3131:
-------------------------------------
(confirmed by hacking SessionSaveOperation sp the second branch is always taken)
> NPE in ItemManager when calling Session.save() with nothing to save
> -------------------------------------------------------------------
>
> Key: JCR-3131
> URL: https://issues.apache.org/jira/browse/JCR-3131
> Project: Jackrabbit Content Repository
> Issue Type: Bug
> Components: jackrabbit-core
> Affects Versions: 2.3.2
> Reporter: Bertrand Delacretaz
> Priority: Minor
>
> I'm getting an NPE on the id.denoteNodes() call below, in ItemManager:
> private ItemData retrieveItem(ItemId id) {
> synchronized (itemCache) {
> ItemData data = itemCache.get(id);
> if (data == null && id.denotesNode()) {
> ...
> because the id is null after taking the second branch of this if in
> SessionSaveOperation.perform:
> if (context.getSessionImpl().hasPermission("/", Session.ACTION_READ))
> {
> id = context.getRootNodeId();
> } else {
> id =
> context.getItemStateManager().getIdOfRootTransientNodeState();
> }
> context.toString() says:
> session-author-3623:
> ItemManager (org.apache.jackrabbit.core.ItemManager@1e911ccc)
> Items in cache:
> SessionItemStateManager
> (org.apache.jackrabbit.core.state.SessionItemStateManager@15472b43)
> [transient]
> {}[attic]
> {}
> which I assume means there's nothing to save.
> The correct behavior is probably to do nothing in perform to avoid the NPE.
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