Thanks Frank, 1. ManagedItemDecorator is Serializable but without a no params constructor. 2. We are using development mode.
I'll try to change to production mode and see if we can put a no-param-constructor. Cheers ... On Tue, May 13, 2008 at 12:26 PM, Frank van Lankvelt < [EMAIL PROTECTED]> wrote: > According to a conversation I had with Johan, only the last shown page > is kept in memory. Earlier versions are written to disk. > > When using ajax, the page does not have to be actually written to disk > as you cannot reach the previous state by using the back button. When > using a BookmarkableLink, the previous page _can_ be reached by the back > button so it has to be written out. > > Are you using the "development" mode of Wicket? It always checks > whether the page is serializable, if I recall correctly. > > The problem remains that the ManagedItemDecorator is not serializable. > (see java.io.ObjectStreamClass.lookup) > > cheers, Frank > > On Tue, 2008-05-13 at 12:01 +0300, Eyal Golan wrote: > > 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] > > > > > > > > > > > -- > ------------------------------------------------------------- > Amsterdam - Hippo B.V. Oosteinde 11 1017 WT Amsterdam +31(0)20-5224466 > San Francisco - Hippo USA Inc. 101 H Street, suite Q Petaluma CA > 94952-3329 +1 (707) 773-4646 > ------------------------------------------------------------- > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > -- Eyal Golan [EMAIL PROTECTED] Visit: http://jvdrums.sourceforge.net/
