Re: Cayenne -- Apache automatic deploy problem

[Andrus Adamchik <an...@objectstyle.org>]

This likely means that 'awakeFromDeserialization' [1] failed to  
attach DataContext to Cayenne stack. Is it possible that the code in  
question called before Cayenne stack is loaded? Where is it called  
anyways?

Andrus


[1] http://svn.apache.org/repos/asf/cayenne/main/branches/STABLE-2.0/ 
cayenne/cayenne-java/src/cayenne/java/org/apache/cayenne/access/ 
DataContext.java

On Mar 30, 2007, at 10:55 AM, Marc Gabriel-Willem wrote:

> Hello,
>
> I checked the entity resolver value.
> Indeed, in this situation the value is 'null'.
>
> Marc
>
> -----Original Message-----
> From: Andrus Adamchik [mailto:andrus@objectstyle.org]
> Sent: Friday, March 30, 2007 4:16 PM
> To: user@cayenne.apache.org
> Subject: Re: Cayenne -- Apache automatic deploy problem
>
> I can't reproduce this error in a test case. I am out of ideas what
> might have caused it. Can you possibly debug this condition to figure
> out why the 'metadata' field in DataContextQueryAction is null? First
> thing to check:
>
> m_editableGroup.getObjectContext().getEntityResolver() != null
>
>
> Andrus
>
>
> On Mar 30, 2007, at 5:24 PM, Marc Gabriel-Willem wrote:
>
>> Hello,
>>
>> Sorry, it is the first time I'm using a list like this one. So, I'm
>> doing some crazy error with it :) For example, I hope my "reply
>> all" is
>> a correct action to do in this case.
>>
>> I saw your first reply.
>>
>> I have exactly the same error when I stop and restart properly the
>> Tomcat server. In fact, stoping and restarting the server simulate  
>> the
>> serialization / deserialization operation that an application
>> server can
>> do at any time it wants (isn't it ?)
>>
>> Marc
>>
>> -----Original Message-----
>> From: Andrus Adamchik [mailto:andrus@objectstyle.org]
>> Sent: Friday, March 30, 2007 3:09 PM
>> To: user@cayenne.apache.org
>> Cc: Marc Gabriel-Willem
>> Subject: Re: Cayenne -- Apache automatic deploy problem
>>
>> Hi, See my original reply asking for more information here:
>>
>> http://objectstyle.org/cayenne/lists/cayenne-user/2007/03/0101.html
>>
>> BTW, it would be much easier to communicate if you subscribe to the
>> list :-)
>>
>> Andrus
>>
>>
>> On Mar 30, 2007, at 4:46 PM, Marc Gabriel-Willem wrote:
>>
>>> Hi,
>>>
>>>
>>>
>>> Sorry to repost that question, but I was not properly register to  
>>> the
>>> mailing list, so I was unable to reply properly.
>>>
>>>
>>>
>>> I'm using Cayenne (2.0.2) with the apache web server (5.5.20) and  
>>> I'm
>>> facing to the following problem.
>>>
>>>
>>>
>>> When apache does an automatic deploy, all objects are serialized /
>>> deserialized without any error.
>>>
>>> But after that, when the code accesses a cayenne persistent object
>>> (member variable of a jsf backing bean), the following problem
>>> occurs:
>>>
>>>
>>>
>>> Caused by: java.lang.NullPointerException
>>>
>>>         at
>>> org.apache.cayenne.access.DataContextQueryAction.interceptPaginatedQ 
>>> u
>
>>> e
>>
>>> ry
>>> (DataContextQueryAction.java:91)
>>>
>>>         at
>>> org.apache.cayenne.access.DataContextQueryAction.execute
>>> (DataContextQuer
>>> yAction.java:50)
>>>
>>>         at
>>> org.apache.cayenne.access.DataContext.onQuery(DataContext.java:1387)
>>>
>>>         at
>>> org.apache.cayenne.access.DataContext.performQuery(DataContext.java:
>>> 1376
>>> )
>>>
>>>         at
>>> org.apache.cayenne.access.ToManyList.resolvedObjectList
>>> (ToManyList.java:
>>> 307)
>>>
>>>         at
>>> org.apache.cayenne.access.ToManyList.size(ToManyList.java:260)
>>>
>>>         at
>>> com.sideinternational.web.profiling.group.GroupEditor.save
>>> (GroupEditor.j
>>> ava:246)
>>>
>>>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
>>> Method)
>>>
>>>         at
>>> sun.reflect.NativeMethodAccessorImpl.invoke
>>> (NativeMethodAccessorImpl.jav
>>> a:39)
>>>
>>>         at
>>> sun.reflect.DelegatingMethodAccessorImpl.invoke
>>> (DelegatingMethodAccessor
>>> Impl.java:25)
>>>
>>>         at java.lang.reflect.Method.invoke(Method.java:585)
>>>
>>>         at
>>> org.apache.myfaces.el.MethodBindingImpl.invoke
>>> (MethodBindingImpl.java:13
>>> 2)
>>>
>>>
>>>
>>> For information, the following code throws that exception (the
>>> call to
>>> the size() method) :
>>>
>>> List itemsToRemove = m_editableGroup.getGroupContentArray();
>>>
>>>       for (int i=0; i < itemsToRemove.size(); i)
>>>
>>>             ...
>>>
>>> Note: Child data context and ObjectEntities are stored in a
>>> serializable
>>> jsf backing bean.
>>>
>>>
>>>
>>> Thank you for your help.
>>>
>>>
>>>
>>> Marc Gabriel
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>
>
>