persistent storage exception

Hello,

I use tomcat 5.0.28 with jdk 1.4.2 and OPS 2.8.
When I restart tomcat, I have this exception:

GRAVE: Exception au chargement des sessions depuis le stockage persistant (persistent storage)
java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: org.orbeon.oxf.xml.SAXStore$1
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1278)
        at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1845)
        at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1769)....


My technical support explain me that tomcat try to reload the old session.
Indeed when I delete the file "SESSIONS.ser" in the repository "work" of tomcat, I don't have this error.

When I stop tomcat I have this error:

INFO: Impossible de s?rialiser l'attribut de session org.orbeon.oxf.portlet-container pour la session E35CD7BBAF2FCF9C65AD052BC634D8E9
java.io.NotSerializableException: org.orbeon.oxf.portlet.PortletConfigImpl$DefaultResourceBundle
        at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1054)
        at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1332)
        at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1304)....

Have you a idea ?

thank you.



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Julien,

This happens if you are using the OPS examples portal, which stores some
non-serializable objects into the session. This shouldn't happen in your
own applications, which likely don't use the OPS examples portal.

There is probably a way to avoid seeing those exceptions anyway, but we
haven't looked into this yet.

-Erik

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Thank you for your response.

Yes I use the OPS examples portal. But why tomcat try to reload this object on the start ?
In fact I use the structure of examples portal with my "example". And I store object in session like this:
<p:processor name="oxf:scope-serializer">
   <p:input name="data" href="#instance#xpointer(/form/formId)" />
   
   <p:input name="config">
     <config>
       <key>formID</key>
       <scope>session</scope>
     </config>
    </p:input>
</p:processor>

And when I stop tomcat, this object looks non-serializable too. How to make it serializable ? And what object is not serializable in the examples portal ?

thank you.



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[hidden email] wrote:
> Thank you for your response.
>
> Yes I use the OPS examples portal. But why tomcat try to reload this object on the start ?

That is probably just the default behavior or the default session
manager behavior. You may be able to learn more here:

   http://tomcat.apache.org/tomcat-5.5-doc/config/manager.html
The portal stores state information in the session for each portlet, and
I think it would be non trivial to make this serializable. This has not
been considered a serious issue, since the examples portal is not meant
at this point to be really used by end users' applications.

Now what the scope serializer stores in the session should definitely be
serializable. In fact, it should be a SAXStore object, which was meant
to be serializable, but there may be a bug. Feel free to check that, but
in the meanwhile I enter an RFE to track this:

https://forge.objectweb.org/tracker/index.php?func=detail&aid=304313&group_id=168&atid=350210

-Erik



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