[WICKET-2138] SecondLevelCache + DiskPageStore Serialization issue with Anonymous inner classes

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4-RC2
• Component/s: wicket
• Environment: Solaris/JDK6u10 Jetty clustered session store.
• Assignee: Igor Vaynberg
• Reporter: Victor Igumnov
• Created: 02/Mar/09 21:48
• Updated: 26/Aug/10 00:02
• Resolved: 26/Aug/10 00:02

Description

It seems like declaring an anonymous inner class will hold on to the previous page which will break serialization with secondlevelcache in a clustered environment.

—

I have run into an odd issue with serialization which throws a stackoverflow exception. Here is the cause:

Passing an LDM model as-is to a page, it will stackoverflow on the receiving page, if that page is refreshed twice or a form has been submitted.

Here is an example...

setResponsePage(new EditBlogPage(new LoadableDetachableModel<Blog>() {
private static final long serialVersionUID = 1L;
@Override
protected Blog load()

{ // just an example.... return new Blog(); }

}));

However, if I subclass the LDM and pass it like so, it will work just fine.

public class FakeLDM extends LoadableDetachableModel<Blog> {
private static final long serialVersionUID = 1L;

@Override
protected Blog load()

{ return new Blog(); }

}

setResponsePage(new EditBlogPage(new FakeLDM()));

One last thing, If I construct the LDM inside the receiving page. It will work fine as well.

This seems to only happen with the SecondLevelCache, any ideas?