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https://issues.apache.org/jira/browse/OAK-5506?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16350518#comment-16350518
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Julian Reschke commented on OAK-5506:
-------------------------------------

[~mduerig] - can you point me to an example test class, from where I could 
steal? Or do you want to take over?

> reject item names with unpaired surrogates early
> ------------------------------------------------
>
>                 Key: OAK-5506
>                 URL: https://issues.apache.org/jira/browse/OAK-5506
>             Project: Jackrabbit Oak
>          Issue Type: Wish
>          Components: core, jcr, segment-tar
>    Affects Versions: 1.5.18
>            Reporter: Julian Reschke
>            Priority: Minor
>             Fix For: 1.10
>
>         Attachments: OAK-5506-01.patch, OAK-5506-02.patch, OAK-5506-4.diff, 
> OAK-5506-bench.diff, OAK-5506-name-conversion.diff, OAK-5506-segment.diff, 
> OAK-5506-segment2.diff, OAK-5506.diff, ValidNamesTest.java
>
>
> Apparently, the following node name is accepted:
>    {{"foo\ud800"}}
> but a subsequent {{getPath()}} call fails:
> {noformat}
> javax.jcr.InvalidItemStateException: This item [/test_node/foo?] does not 
> exist anymore
>     at 
> org.apache.jackrabbit.oak.jcr.delegate.ItemDelegate.checkAlive(ItemDelegate.java:86)
>     at 
> org.apache.jackrabbit.oak.jcr.session.operation.ItemOperation.checkPreconditions(ItemOperation.java:34)
>     at 
> org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.prePerform(SessionDelegate.java:615)
>     at 
> org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.perform(SessionDelegate.java:205)
>     at 
> org.apache.jackrabbit.oak.jcr.session.ItemImpl.perform(ItemImpl.java:112)
>     at 
> org.apache.jackrabbit.oak.jcr.session.ItemImpl.getPath(ItemImpl.java:140)
>     at 
> org.apache.jackrabbit.oak.jcr.session.NodeImpl.getPath(NodeImpl.java:106)
>     at 
> org.apache.jackrabbit.oak.jcr.ValidNamesTest.nameTest(ValidNamesTest.java:271)
>     at 
> org.apache.jackrabbit.oak.jcr.ValidNamesTest.testUnpairedSurrogate(ValidNamesTest.java:259)
>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source){noformat}
> (test case follows)



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