just to circumvent the problem for a while, I am thinking of the
following workaround:
what would be the implications if I change the implementation of
IObjectStreamFactor.DefaultObjectStreamFactory so that
newObjectInputStream() and newObjectOutputStream return the regular JDK
ObjectInputStream and ObjectOutputStream, respectively?
To my mind, this would eliminate the AccessControlException problem
since I am not subclassing ObjectInputStream and ObjectOutputStream.
thanks,
andr
On 30.10.2009 10:27, A. Maza wrote:
yes, except the fact that I am trying to use a Memcache-based
implementation of the IPageStore instead of the HTTPSessionStore
(based on the TerracottaPageStore. However, in my case the exception
occurs when I am trying to serialize the page using the provided
method of the AbstractPageStore.
The exception of the second stacktrace I posted was reported by
another user in the GAE forum [1], but happening in a totally
different scenario.
In my initial post I forgot the link to the issue I have opened on the
GAE project site. [2]
I am using Wicket 1.4.3 (I have also tried it with 1.4.2) and the
latest GAE SDK (1.2.6)
regards,
andr
[1]
<http://groups.google.com/group/google-appengine-java/browse_thread/thread/b80648c126778ef5/0a259ba5bba8078f?lnk=gst&q=wicket+accesscontrolexception#0a259ba5bba8078f>
[2] <http://code.google.com/p/googleappengine/issues/detail?id=2334>
On 29.10.2009 21:56, Esteban Masoero wrote:
I'm sure the answer is "yes" but to be sure: have you done everything
that is said here
http://stronglytypedblog.blogspot.com/2009/04/wicket-on-google-app-engine.html
?
Also, what versions of gae sdk and wicket are you using?
A. Maza escribió:
Hi,
I've encountered now (and have seen reported by other users) several
different cases where Wicket on GAE throws an AccessControlException
when serializing an object to a byte array.
Although this is clearly an issue of GAE permissions, I would like to
ask if someone could give me a hint, why this exception occurs or if
someone may know a workaround. I've already filed an issue for this on
the GAE project site [1] and would forward any findings of the wicket
community.
Below I include snippets of two different stacktraces.
Thanks in advance,
andr
<snip1>
java.security.AccessControlException: access denied
(java.io.SerializablePermission enableSubclassImplementation)
at
java.security.AccessControlContext.checkPermission(AccessControlContext.java:323)
at
java.security.AccessController.checkPermission(AccessController.java:546)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
at
com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkPermission(DevAppServerFactory.java:151)
at java.io.ObjectOutputStream.<init>(ObjectOutputStream.java:253)
at
org.apache.wicket.util.io.IObjectStreamFactory$DefaultObjectStreamFactory$2.<init>(IObjectStreamFactory.java:150)
at
org.apache.wicket.util.io.IObjectStreamFactory$DefaultObjectStreamFactory.newObjectOutputStream(IObjectStreamFactory.java:114)
at
org.apache.wicket.util.lang.Objects.objectToByteArray(Objects.java:1111)
at
org.apache.wicket.protocol.http.pagestore.AbstractPageStore.serializePage(AbstractPageStore.java:203)
</snip1>
<snip2>
(java.io.SerializablePermission enableSubstitution)
at java.security.AccessControlContext.checkPermission
(AccessControlContext.java:264)
at java.security.AccessController.checkPermission
(AccessController.java:427)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:
532)
at com.google.appengine.tools.development.DevAppServerFactory
$CustomSecurityManager.checkPermission(DevAppServerFactory.java:122)
at java.io.ObjectOutputStream.enableReplaceObject
(ObjectOutputStream.java:556)
at org.apache.wicket.util.lang.Objects
$ReplaceObjectOutputStream.<init>(Objects.java:179)
at org.apache.wicket.util.lang.Objects
$ReplaceObjectOutputStream.<init>(Objects.java:170)
at org.apache.wicket.util.lang.Objects.cloneModel(Objects.java:442)
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:1555)
at org.apache.wicket.Component.modelChanging(Component.java:2197)
at org.apache.wicket.Component.setDefaultModelObject(Component.java:
3020)
at
org.apache.wicket.extensions.markup.html.tabs.TabbedPanel.setSelectedTab
(TabbedPanel.java:346)
at org.apache.wicket.extensions.markup.html.tabs.TabbedPanel$5.onClick
(TabbedPanel.java:327)
at org.apache.wicket.markup.html.link.Link.onLinkClicked(Link.java:
221)
</snip2>
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