Re: Exception with Tomcat's session restore capability

From: Andrus Adamchik (andru..bjectstyle.org)
Date: Mon Sep 11 2006 - 17:01:11 EDT

  • Next message: Mike Kienenberger: "Re: Exception with Tomcat's session restore capability"

    Dave,

    could you post the rest of the stack? Looks like the fault fires on
    deserialization, i.e. too early in the container lifecycle when there
    is no DB connection yet. Normally this shouldn't happen. I wonder
    what causes it; and the answer might be a few steps up the stack trace.

    Andrus

    On Sep 11, 2006, at 1:46 PM, Dave Dombrosky wrote:

    > I am currently having problems when trying to use Cayenne 1.2 along
    > with Tomcat's (v5.0.28) session restore capability. That is to say,
    > if I deploy new code and restart tomcat, it saves the session data
    > instead of starting with all new sessions when it starts up.
    >
    > My problem is that I used to be able to restart and stay logged in
    > using version 1.1. Version 1.2 seems to have problems with trying to
    > look up data after I have restarted Tomcat, and I get this stack trace
    > caused by a NullPointerException:
    >
    > org.objectstyle.cayenne.access.ObjectStore.resolveHollow
    > (ObjectStore.java:945)
    > org.objectstyle.cayenne.access.DataContext.prepareForAccess
    > (DataContext.java:1842)
    > org.objectstyle.cayenne.CayenneDataObject.readProperty
    > (CayenneDataObject.java:238)
    >
    > I couldn't find anyone else with this problem, so I assume I am doing
    > something wrong and it's not a bug. Any ideas?
    >
    > -Dave
    >

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