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https://issues.apache.org/jira/browse/WICKET-3483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13000325#comment-13000325
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Pete Questionman commented on WICKET-3483:
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Sorry, I was mistaken in the isReplicated() quote above. It's been two weeks. I
will now start over again with a really simple quickstart to nail this bug,
since Wicket 1.4 on GAE is starting to get annoying (Multi-Tab support being
broken). Will update with proper stacktraces and better-worded error reports.
Since you mentioned it: I think GAE is awesome, and in combination with Wicket
it is like coding in heaven for me :-) GAE takes care of all the
deployment/staging/logging/etc stuff, Wicket let's me focus on the features
(instead of on technical details). So I can move really fast by using them both
in combination. The only thing that's restrictive on GAE is the datastore --
it's simply not SQL. But I've been able to build a pretty complex application
(for employee performance review and 360 degree feedback) on GAE now, with
hundreds of beta users, and I haven't run into any other restrictions so far.
What were you thinking was too restrictive? Maybe I can give you some hint. :-)
> NullPointerException in PersistentPageManager's page cache
> ----------------------------------------------------------
>
> Key: WICKET-3483
> URL: https://issues.apache.org/jira/browse/WICKET-3483
> Project: Wicket
> Issue Type: Bug
> Components: wicket-core
> Affects Versions: 1.5-RC2
> Environment: Google AppEngine
> Reporter: Martin Grigorov
> Assignee: Martin Grigorov
> Fix For: 1.5-RC3
>
>
> From a private email to me by a user:
> Hi,
> I'm trying to use your gae-initializer to get your test application working
> on GAE. I'm using version 1.5-rc2 of wicket and your initializer. Using GAE
> sdk 1.4.2.
> I'm getting the same problem the person on the 1.5-rc1 release page was
> getting, and I can't get around it.
> The homepage loads, but the other page throws the same null pointer exception
> he was getting:
> java.lang.NullPointerException
> at
> org.apache.wicket.page.PersistentPageManager$SessionEntry.findPage(PersistentPageManager.java:117)
> ....
> --------------------------------
> The problem is that
> org.apache.wicket.page.PersistentPageManager.SessionEntry.addPage(IManageablePage)
> adds even 'null' pages.
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