Re: Cayenne -- Apache automatic deploy problem

From: Andrus Adamchik (andru..bjectstyle.org)
Date: Fri Mar 30 2007 - 09:09:22 EDT

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    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.interceptPaginatedQue
    > 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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