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Date: Wed, 23 Apr 2008 13:05:21 -0700 (PDT)
From: "Julian Reschke (JIRA)" <jira@apache.org>
To: dev@jackrabbit.apache.org
Subject: [jira] Commented: (JCR-1552) Concurrent conflicting property
 creation sometimes doesn't fail
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    [ https://issues.apache.org/jira/browse/JCR-1552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12591769#action_12591769 ] 

Julian Reschke commented on JCR-1552:
-------------------------------------

The example that I started with did that.


> Concurrent conflicting property creation sometimes doesn't fail
> ---------------------------------------------------------------
>
>                 Key: JCR-1552
>                 URL: https://issues.apache.org/jira/browse/JCR-1552
>             Project: Jackrabbit
>          Issue Type: Bug
>          Components: jackrabbit-core
>    Affects Versions: core 1.4.2
>            Reporter: Thomas Mueller
>            Assignee: Stefan Guggisberg
>             Fix For: 1.5
>
>
> The following test prints "Success":
>        Session s1 = ...
>        Session s2 = ...
>        s1.getRootNode().setProperty("b", "0"); // init with zero
>        s1.getRootNode().setProperty("b", (String) null); // delete
>        s1.save();
>        s1.getRootNode().setProperty("b", "1");
>        s2.getRootNode().setProperty("b", "2");
>        s1.save();
>        s2.save();
>        System.out.println("Success");
> However  if the line marked "... // delete" is commented out, 
> it fails with the following exception:
> javax.jcr.InvalidItemStateException:
> cafebabe-cafe-babe-cafe-babecafebabe/{}b: the item cannot be saved
> because it has been modified externally.
>        at org.apache.jackrabbit.core.ItemImpl.getTransientStates(ItemImpl.java:246)
>        at org.apache.jackrabbit.core.ItemImpl.save(ItemImpl.java:928)
>        at org.apache.jackrabbit.core.SessionImpl.save(SessionImpl.java:849)
> It should fail in all cases. If we decide it shouldn't fail, it needs to be documented.

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