Tomcat is doing the serialization of the session internally when it
restarts, so I have no idea how it does it. I don't know much about
serialization, but I would be able to look into it if I knew what I
should be investigating.
On 9/11/06, Mike Kienenberger <mkienen..mail.com> wrote:
> No, I wouldn't try changing the transient nature.
>
> It does seem kinda odd, though. I know that I'm saving serialized
> objects two different ways -- by individual DataObject for one
> read-only context, and by DataContext for a modified set of objects.
> I don't think I have seen this particular problem.
>
> Are you serializing the DataContext directly?
>
>
> On 9/11/06, Dave Dombrosky <dombr..mail.com> wrote:
> > I downloaded the 1.2.1 source and added some code to figure out what
> > is going on. It appears that context.getChannel() from
> > ObjectStore.java line 945 is returning null. I am guessing that this
> > is because of DataContext line 182 which declares the channel to be
> > transient. Transient properties are not serialized, which is how
> > tomcat saves the session, so it is reverting back to it's default
> > value (null).
> >
> > I tried removing the "transient" part of the variable declaration, but
> > then Tomcat complains on a different piece of code. I'm not even sure
> > if that's the best way to fix it so I don't think I'll explore that
> > any further yet. Is this issue something that I should add to JIRA?
> >
> > -Dave
> >
> > On 9/11/06, Mike Kienenberger <mkienen..mail.com> wrote:
> > > My suggestion would be to look at the 1.2.1 source and see what's
> > > going on at ObjectStore.java, line 945.
> > >
> > > On 9/11/06, Dave Dombrosky <dombr..mail.com> wrote:
> > > > Problem still occurs on 1.2.1
> > > >
> > > > On 9/11/06, Mike Kienenberger <mkienen..mail.com> wrote:
> > > > > Maybe http://issues.apache.org/cayenne/browse/CAY-614 ?
> > > > >
> > > > > This was fixed for 1.2.1. It might be related.
> > > > >
> > > > > On 9/11/06, Dave Dombrosky <dombr..mail.com> 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
> > > > > >
> > > > >
> > > >
> > >
> >
>
This archive was generated by hypermail 2.0.0 : Mon Sep 11 2006 - 16:53:34 EDT