RE: Cayenne -- Apache automatic deploy problem

From: Marc Gabriel-Willem (marc.gabriel-wille..ide-international.com)
Date: Fri Mar 30 2007 - 10:55:14 EDT

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    Hello,

    I checked the entity resolver value.
    Indeed, in this situation the value is 'null'.

    Marc

    -----Original Message-----
    From: Andrus Adamchik [mailto:andru..bjectstyle.org]
    Sent: Friday, March 30, 2007 4:16 PM
    To: use..ayenne.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: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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