[jira] [Commented] (CAY-1583) context.getObjectStore() returning null causing NullpointerException in DataMergeHandler

["Andrus Adamchik (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CAY-1583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13061799#comment-13061799 ] 

Andrus Adamchik commented on CAY-1583:
--------------------------------------

DataMergeHandler seems to be your own application class? Doesn't look like a Cayenne class. The problem does look like deserialization issue. Could you give some more details on how it happens and what type of application this is (webapp, etc)

Also is it possible to submit the patch as an output of "svn diff" to provide us some context?



> context.getObjectStore() returning null causing NullpointerException in DataMergeHandler
> ----------------------------------------------------------------------------------------
>
>                 Key: CAY-1583
>                 URL: https://issues.apache.org/jira/browse/CAY-1583
>             Project: Cayenne
>          Issue Type: Bug
>          Components: Core Library
>    Affects Versions: 3.0.1
>         Environment: sun Java 6 jre under both debian (squeeze) and ubuntu (maverik) linux with MySQL 5.1 using InnoDB.
>            Reporter: Amaury SECHET
>
> context.getObjectStore() return null, but nowhere in the code the constructor is called with null as objectStore
> This looks like a multithreading problem (object accessed before full initialization) or deserialization issue.
> However, I have a patch that's either, solve the issue, or at least make it almost impossible to trigger. Simply switch position of
> 		// use a setter to properly initialize EntityResolver
> 		setChannel(channel);
> 		
> form before the objectContext to after.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira