are you using a class reloading mechanism of any sort? this error
would make sense if wicket saved a page to store, you changed the
class def and wicket tried to deserialize an instance of that changed
class....

-igor


On Tue, Mar 18, 2008 at 12:42 AM, lars vonk <[EMAIL PROTECTED]> wrote:
> Have you found out which Page it tries to deserialize? Did you try to
>  deserialize this exact page using another widget? The exception indicates
>  the internal object stream format is corrupted. So this would indeed mean it
>  would also occur if you try to to deserialize it using a "normal" widget.
>  Here is more info about the (de)serialization protocol
>  
> http://java.sun.com/j2se/1.5.0/docs/guide/serialization/spec/protocol.html#8101
>
>  I could be way of here so please correct me if I am wrong: I don't know the
>  Wicket internals exactly, but I noticed that the DiskPageStore uses a pool
>  of FileChannels to access the files and if I understand the code correctly
>  it allows the file to be opened for read and write the same time. See
>  FilePoonChannel.newFileChannel where the channel is opened in "rw" mode. So
>  maybe it could be a timing issue and  you are trying to deserialize a Page
>  that is still in the process of being serialized?
>
>  Lars
>
>
>
>
>
>  On Tue, Mar 18, 2008 at 2:30 AM, David Leangen <[EMAIL PROTECTED]> wrote:
>
>  >
>  > It seems to me that if there was a problem with Serialization, then
>  > normal pages would not work, right?
>  >
>  > So, does anybody have an idea why my pages generally work, but I get a
>  > StreamCorruptedException only when using the autocomplete component?
>  >
>  > The stack trace and also stepping through the code in detail are not
>  > giving me any good hints yet...
>  >
>  >
>  > Thanks!
>  > Dave
>  >
>  >
>  >
>  >
>  > On Mon, 2008-03-17 at 13:38 +0900, David Leangen wrote:
>  > > Can anybody suggest how I can try to resolve my
>  > > StreamCorruptedException?
>  > >
>  > > I have an autocomplete text field. When I hit the back button and modify
>  > > the text, I get the said Exception.
>  > >
>  > > I've tried stepping through the code, but the error is not obvious at
>  > > all.
>  > >
>  > > The error only happens with the autocomplete widget (i.e. when I modify
>  > > the text in the related text box). Nothing else (different query or use
>  > > of controls or links) triggers this Exception.
>  > >
>  > >
>  > > Thanks!
>  > > Dave
>  > >
>  > >
>  > >
>  > >
>  > > java.lang.RuntimeException: Could not deserialize object using
>  > > `org.apache.wicket.util.io.IObjectStreamFactory
>  > > $DefaultObjectStreamFactory` object factory
>  > >       at
>  > > org.apache.wicket.util.lang.Objects.byteArrayToObject(Objects.java:406)
>  > >       at
>  > >
>  > org.apache.wicket.protocol.http.pagestore.AbstractPageStore.deserializePage
>  > (AbstractPageStore.java:228)
>  > >       at
>  > > org.apache.wicket.protocol.http.pagestore.DiskPageStore.getPage(
>  > DiskPageStore.java:702)
>  > >       at org.apache.wicket.protocol.http.SecondLevelCacheSessionStore
>  > > $SecondLevelCachePageMap.get(SecondLevelCacheSessionStore.java:311)
>  > >       at org.apache.wicket.Session.getPage(Session.java:745)
>  > >       at
>  > >
>  > org.apache.wicket.request.AbstractRequestCycleProcessor.resolveRenderedPage
>  > (AbstractRequestCycleProcessor.java:443)
>  > >       at
>  > > org.apache.wicket.protocol.http.WebRequestCycleProcessor.resolve(
>  > WebRequestCycleProcessor.java:139)
>  > >       at org.apache.wicket.RequestCycle.step(RequestCycle.java:1224)
>  > >       at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1316)
>  > >       at org.apache.wicket.RequestCycle.request(RequestCycle.java:493)
>  > >       at
>  > > org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java
>  > :354)
>  > >       at
>  > > org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java
>  > :121)
>  > >       at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
>  > >       at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
>  > >       at
>  > > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
>  > >       at
>  > > org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:367)
>  > >       at
>  > > org.ops4j.pax.web.service.internal.HttpServiceHandler.handle(
>  > HttpServiceHandler.java:66)
>  > >       at
>  > > org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
>  > >       at
>  > > org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712)
>  > >       at
>  > > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
>  > >       at org.mortbay.jetty.Server.handle(Server.java:285)
>  > >       at
>  > > org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:502)
>  > >       at org.mortbay.jetty.HttpConnection
>  > > $RequestHandler.headerComplete(HttpConnection.java:821)
>  > >       at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:513)
>  > >       at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java
>  > :208)
>  > >       at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java
>  > :378)
>  > >       at org.mortbay.jetty.bio.SocketConnector
>  > > $Connection.run(SocketConnector.java:226)
>  > >       at org.mortbay.thread.BoundedThreadPool
>  > > $PoolThread.run(BoundedThreadPool.java:442)
>  > >
>  > >
>  > > Caused by: java.io.StreamCorruptedException
>  > >       at java.io.ObjectInputStream.readObject0(ObjectInputStream.java
>  > :1332)
>  > >       at
>  > > java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1908)
>  > >       at
>  > > java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832)
>  > >       at
>  > > java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java
>  > :1719)
>  > >       at java.io.ObjectInputStream.readObject0(ObjectInputStream.java
>  > :1305)
>  > >       at java.io.ObjectInputStream.readObject(ObjectInputStream.java
>  > :348)
>  > >       at
>  > > org.apache.wicket.util.lang.Objects.byteArrayToObject(Objects.java:392)
>  > >       ... 27 more
>  > >
>  > >
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