Exception with Tomcat's session restore capability

From: Dave Dombrosky (dombr..mail.com)
Date: Mon Sep 11 2006 - 13:46:11 EDT

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    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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