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https://issues.apache.org/jira/browse/WICKET-3050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12912962#action_12912962
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Clint Checketts commented on WICKET-3050:
-----------------------------------------
Yes, just catching the exception definitely wouldn't be the final solution, the
patch's purpose was more to aid in drawing attention to where the calls were in
the code.
Before I can propose a solution, I need help understanding why we call
replaceObject in the stream and what would happen if we stopped doing it. From
my initial testing I couldn't tell a difference, so I need someone more
familiar with it to help.
> AccessControlException thrown when security manager denies access
> -----------------------------------------------------------------
>
> Key: WICKET-3050
> URL: https://issues.apache.org/jira/browse/WICKET-3050
> Project: Wicket
> Issue Type: Bug
> Environment: Google App Engine
> Reporter: Clint Checketts
> Priority: Trivial
> Fix For: 1.4.13, 1.5-M3
>
> Attachments: enableReplaceObject_patch.txt
>
>
> Google App Engine locks down various environmental pieces. The ModelChange
> class tries to do some serialization which causes the exception.
> Caused by: java.security.AccessControlException: access denied
> (java.io.SerializablePermission enableSubstitution)
> at
> java.security.AccessControlContext.checkPermission(AccessControlContext.java:355)
> at
> java.security.AccessController.checkPermission(AccessController.java:567)
> at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
> at
> java.io.ObjectOutputStream.enableReplaceObject(ObjectOutputStream.java:609)
> at
> org.apache.wicket.util.lang.Objects$ReplaceObjectOutputStream.<init>(Objects.java:183)
> at
> org.apache.wicket.util.lang.Objects$ReplaceObjectOutputStream.<init>(Objects.java:174)
> at org.apache.wicket.util.lang.Objects.cloneModel(Objects.java:461)
> at
> org.apache.wicket.version.undo.ModelChange.<init>(ModelChange.java:103)
> at
> org.apache.wicket.version.undo.ChangeList.componentModelChanging(ChangeList.java:64)
> at
> org.apache.wicket.version.undo.UndoPageVersionManager.componentModelChanging(UndoPageVersionManager.java:123)
> at org.apache.wicket.Page.componentModelChanging(Page.java:1598)
> at org.apache.wicket.Component.modelChanging(Component.java:2206)
> at
> org.apache.wicket.Component.setDefaultModelObject(Component.java:3046)
> at
> org.apache.wicket.extensions.markup.html.tabs.TabbedPanel.setSelectedTab(TabbedPanel.java:338)
> at
> org.apache.wicket.extensions.markup.html.tabs.TabbedPanel$5.onClick(TabbedPanel.java:319)
> at org.apache.wicket.markup.html.link.Link.onLinkClicked(Link.java:224)
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