[WICKET-4360] Wicket reloading old page id on page refresh

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 1.5.3
• Component/s: wicket
• Environment: Windows & linux, jetty 7 & WAS 7
• Assignee: Unassigned
• Reporter: Stijn Geukens
• Created: 25/Jan/12 14:20
• Updated: 27/Jan/12 15:41
• Resolved: 27/Jan/12 13:13

Description

This issue was first reported on StackOverflow but after further investigation it is possible that this is a bug:

http://stackoverflow.com/questions/8985785/wicket-serialization-deserialization-issue

I added following to my Page class:

private void writeObject(ObjectOutputStream oos) throws IOException

{ oos.defaultWriteObject(); System.err.println("Writing " + this + something to print out the type of the filter); }

private void readObject(ObjectInputStream ois) throws ClassNotFoundException, IOException

{ ois.defaultReadObject(); System.err.println("Reading " + this + something to print out the type of the filter); }

1. When the Page is loaded first it prints (actually it prints this 5 times, not sure if it's normal):
Writing [Page class = com.bnpp.ecom.homepage.web.Homepage, id = 0, render count = 1]: type = ALL

2. When I click on AjaxLink 'ALL' (that will update the filter) it still prints:
Writing [Page class = com.bnpp.ecom.homepage.web.Homepage, id = 0, render count = 1]: type = ALL

3. When I click on AjaxLink 'DISCUSSIONS' (that will update the filter) it still prints:
Writing [Page class = com.bnpp.ecom.homepage.web.Homepage, id = 0, render count = 1]: type = DISCUSSIONS

4. When I refresh the page (F5) the pageid is updated:
Writing [Page class = com.bnpp.ecom.homepage.web.Homepage, id = 1, render count = 2]: type = DISCUSSIONS

The url however does not change, it stays http://.../?0

5. When I click on AjaxLink 'ALL' (that will update the filter) it prints:
Writing [Page class = com.bnpp.ecom.homepage.web.Homepage, id = 1, render count = 1]: type = ALL

So far so good but
6. When I refresh the page now (F5) this is printed out:
Reading [Page class = com.bnpp.ecom.homepage.web.Homepage, id = 0, render count = 1]: type = DISCUSSIONS
Writing [Page class = com.bnpp.ecom.homepage.web.Homepage, id = 2, render count = 2]: type = DISCUSSIONS

So it deserializes the page with id 0 although the last known page id was 1 and all changes that were done for version 1 are ignored (in this case switching the type from DISCUSSIONS to ALL).

Issue Links

• duplicates: WICKET-4286 ListView causes page ID increment