First of all, thanks. (most of) all the above I found out. I mentioned "weird" because if that was the problem (Serialization or invalid constructor), then the Expand link would have never worked. Am I correct? BUT, The exception happens only after I go to a BookmarkableLink.
It's not we didn't try to discover the problem before :) On Tue, May 13, 2008 at 11:16 AM, Martijn Dashorst < [EMAIL PROTECTED]> wrote: > On 5/13/08, Eyal Golan <[EMAIL PROTECTED]> wrote: > > We have a weird exception in our system. > > Not so weird when you read the exception trace. It is a dark art, but > worth the effort of learning. > > > My team mates created a non standard DataView: > > Uh oh... :) > > So read this part: > > > 2008-05-13 10:55:21,885 ERROR [org.apache.wicket.RequestCycle] - Could > not > > deserialize object using > > > `org.apache.wicket.util.io.IObjectStreamFactory$DefaultObjectStreamFactory` > > object factory > > What does that mean? (Don't read ahead just yet, think about the message) > > > > > > > > > It means that an object, your Item's model object, could not be > deserialized. This means that one of your objects that are attached to > the page does not honor the serialization contract. Specifically when > you go through the stack trace and find the cause: > > > Caused by: java.io.InvalidClassException: > > com.eurekify.tms.web.common.campaign.ManagedItemDecorator; no valid > > constructor > > It seems that there is something wrong with ManagedItemDecorator - it > is missing some valid constructor. Now if you don't know why this is, > then look up the InvalidClassException using google. This points to > the following JavaDoc [1] and states: > > Thrown when the Serialization runtime detects one of the following > problems with a Class. > > * The serial version of the class does not match that of the class > descriptor read from the stream > * The class contains unknown datatypes > * The class does not have an accessible no-arg constructor > > Voila, there is your problem, which you could discover yourself given > a bit of brain excercise. > > Martijn > > [1] > http://java.sun.com/j2se/1.4.2/docs/api/java/io/InvalidClassException.html > > -- > Buy Wicket in Action: http://manning.com/dashorst > Apache Wicket 1.3.3 is released > Get it now: http://www.apache.org/dyn/closer.cgi/wicket/1.3.3 > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > -- Eyal Golan [EMAIL PROTECTED] Visit: http://jvdrums.sourceforge.net/
