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From "Martijn Hendriks (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-2168) Avoid premature publication of XAItemStateManager
Date Thu, 25 Jun 2009 14:04:07 GMT

    [ https://issues.apache.org/jira/browse/JCR-2168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12724094#action_12724094

Martijn Hendriks commented on JCR-2168:

Marcel, thanks again for having a look :) I'll commit the patch shortly.

> Avoid premature publication of XAItemStateManager
> -------------------------------------------------
>                 Key: JCR-2168
>                 URL: https://issues.apache.org/jira/browse/JCR-2168
>             Project: Jackrabbit Content Repository
>          Issue Type: Bug
>          Components: jackrabbit-core
>    Affects Versions: 1.5.6
>            Reporter: Martijn Hendriks
>         Attachments: JCR-2168.patch
> The XAItemStateManager constructor calls the super constructor (LocalItemStateManager)
 which registers the instance as a listener with the SharedItemStateManager. The construction
of the instance has not yet been finished, but it is accessible from the SharedItemStateManager.
This can result in strange exceptions like the following:
> java.lang.NullPointerException
>         at org.apache.jackrabbit.core.state.XAItemStateManager.stateModified(XAItemStateManager.java:580)
>         at org.apache.jackrabbit.core.state.StateChangeDispatcher.notifyStateModified(StateChangeDispatcher.java:111)
>         at org.apache.jackrabbit.core.state.SharedItemStateManager.stateModified(SharedItemStateManager.java:400)
>         at org.apache.jackrabbit.core.virtual.AbstractVISProvider.stateModified(AbstractVISProvider.java:445)
>         at org.apache.jackrabbit.core.state.ItemState.notifyStateUpdated(ItemState.java:244)

> The NPE is caused by the commitLogs field being null (it has not yet been initialized
to its final value).

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