[jira] Resolved: (JCR-1053) Calling size method of a ManageableArrayList causes NullPointerException

["Christophe Lombart (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/JCR-1053?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Christophe Lombart resolved JCR-1053.
-------------------------------------

    Resolution: Fixed

Fixed. Can you check if it is ok for you ?

Right now, if there is no node matching to the collection element,  the collection is null. We can imagine to return an empty collection. I think returning a null value or an empty collection is almost the same in this case. Please, add your comment if you are not agree. Thanks

> Calling size method of a ManageableArrayList causes NullPointerException
> ------------------------------------------------------------------------
>
>                 Key: JCR-1053
>                 URL: https://issues.apache.org/jira/browse/JCR-1053
>             Project: Jackrabbit
>          Issue Type: Bug
>          Components: jcr-mapping
>    Affects Versions: 1.3
>            Reporter: André Bierwolf
>            Assignee: Christophe Lombart
>         Attachments: NTCollectionConverterImpl.diff
>
>
> When using the NTCollectionConverterImpl with proxy="true" a call on the size () method of a ManageableArrayList causes a NullPointerException if there is no underlying List. LazyCollectionLoader doLoad returns null because there is are no children.
> The ManageableArrayList is created because the isNull method of the NTCollectionConverterImpl class always returns false. 
> According to the comment line this is done because the getCollectionNodes always returns a list. 
> But after the fix for JCR-882 this is not correct anymore.
> The attached fix corrects this. 
> The only question remaining is how to differ between an empty list and a null-value for the field containing the list.

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