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:andru..bjectstyle.org]
> Sent: Friday, March 30, 2007 3:09 PM
> To: use..ayenne.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.interceptPaginatedQu
>> 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
>>
>>
>>
>>
>>
>
>
>
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