the view doesnt keep the iterator, it just iterates over it once when it
renders. iterators arent meant to be kept, they are throwaway objects.
-igor
On 7/18/07, Ballist1c <[EMAIL PROTECTED]> wrote:
>
>
> It IS very possible I am going about this from the completely wrong
> angle...
>
> The gist of it is, that a whole bunch of users will be reading all the
> entries from the same vector in an asynchronised manner. So what I thought
> that each user would require their own Iterator to keep track of their
> progress through the Vector ...
>
> The only actions I performed on the vector is adding to it. I am
> thinking,
> once the iterator is retrieved from getItemModels() does RefreshingView
> store the iterator within itself for the duration that its being
> displayed?
> cause if that is the case, i am thinking i dont even NEED to be storing
> the
> iterator with each user!
>
>
>
>
> igor.vaynberg wrote:
> >
> > On 7/18/07, Ballist1c <[EMAIL PROTECTED]> wrote:
> >>
> >>
> >> Yep, I made some adjustments to code, to allow for any number of users
> to
> >> join a chatSession, rather then just 2.
> >>
> >> What I am doing is , the vector that I am using is within a particular
> >> class
> >> and the Iterators for that vector are actually stored within another
> >> subclass which is stored within a hashmap within this class.
> >
> >
> > w o w
> >
> > I got this working before with Iterators directly declared within the
> > class,
> >> but now that I have moved the iterators to a hashMap so I can store
> >> multiple
> >> iterators to the same Vector, it has gone nuts... with the same error:(
> >>
> >> Anyway, let me know what you think
> >
> >
> > obviously whatever this thing is, another thread is modifying it, or
> you
> > are doing something elsewhere to modify it.
> >
> > what you should do is instead of returning an iterator directly first
> copy
> > the values into an array list and return an iterator to that. java 101.
> >
> > -igor
> >
> >
> >
> >
> ----------------------------------------------------------------------------------
> >> chatRefreshingView = new RefreshingView("chatView", new
> >> PropertyModel(new PropertyModel(ChatView.this.getJumbuckSession(),
> >> "currentChatSession"), "chatEntries"))
> >> {
> >> protected Iterator getItemModels()
> >> {
> >> //i like cereal
> >> chatViewItemsIterator = new
> >> ModelIteratorAdapter(ChatView.this.getJumbuckSession
> >> ().getCurrentChatSessionIterator())
> >> {
> >>
> >> protected IModel model(Object object) {
> >> return new Model((Serializable) object);
> >> }
> >> };
> >> return chatViewItemsIterator;
> >> }
> >> protected void populateItem(Item item)
> >> {
> >> ChatViewItem chatViewItem =
> getItem("chatViewItem");
> >> item.add(chatViewItem);
> >> chatViewItem.setMyModels();
> >> }
> >> };
> >>
> >> add(chatRefreshingView);
> >> chatRefreshingView.setOutputMarkupId(true);
> >>
> >>
> >>
> -------------------------------------------------------------------------------
> >> public void setMyModels() //for chatViewItem.setMyModels() above
> >> {
> >>
> >> IModel chatViewItemModel = getParent().getModel();
> >> PropertyModel contentsModel = new
> >> PropertyModel(chatViewItemModel,
> >> "contents");
> >>
> >> getAuthorChatImage().setModel(new ImagePathFromIdModel(new
> >> PropertyModel(chatViewItemModel, "authorProfileId")));
> >> getContents().setModel(contentsModel);
> >> }
> >>
> >>
> >>
> ----------------------------------------------------------------------------------
> >>
> >> WicketMessage: Error attaching this container for rendering:
> >> [MarkupContainer [Component id = chatDisplay, page =
> >> jumbuck.ffweb.wicket.page.FFWeb, path =
> >> 0:main_tabbed_panel:target_panel:tabbed_panel:target_panel:
> >> chatDisplay.HotListTargetPanel$1,
> >> isVisible = true, isVersioned = false]]
> >>
> >> Root cause:
> >>
> >> java.util.ConcurrentModificationException
> >> at java.util.AbstractList$Itr.checkForComodification(AbstractList.java
> >> :372)
> >> at java.util.AbstractList$Itr.next(AbstractList.java:343)
> >> at
> >> org.apache.wicket.markup.repeater.util.ModelIteratorAdapter.next(
> >> ModelIteratorAdapter.java:60)
> >> at
> >> org.apache.wicket.markup.repeater.DefaultItemReuseStrategy$1.next(
> >> DefaultItemReuseStrategy.java:71)
> >> at
> >> org.apache.wicket.markup.repeater.RefreshingView.addItems(
> >> RefreshingView.java:189)
> >> at
> >> org.apache.wicket.markup.repeater.RefreshingView.onBeforeRender(
> >> RefreshingView.java:115)
> >> at org.apache.wicket.Component.beforeRender(Component.java:846)
> >> at
> >> org.apache.wicket.MarkupContainer.onBeforeRenderChildren(
> >> MarkupContainer.java:1449)
> >> at org.apache.wicket.Component.beforeRender(Component.java:856)
> >> at
> >> org.apache.wicket.MarkupContainer.onBeforeRenderChildren(
> >> MarkupContainer.java:1449)
> >> at org.apache.wicket.Component.beforeRender(Component.java:856)
> >> at
> >> org.apache.wicket.MarkupContainer.onBeforeRenderChildren(
> >> MarkupContainer.java:1449)
> >> at org.apache.wicket.Component.beforeRender(Component.java:856)
> >> at
> >> org.apache.wicket.ajax.AjaxRequestTarget.respondComponent(
> >> AjaxRequestTarget.java:757)
> >> at
> >> org.apache.wicket.ajax.AjaxRequestTarget.respondComponents(
> >> AjaxRequestTarget.java:662)
> >> at
> >> org.apache.wicket.ajax.AjaxRequestTarget.respond(AjaxRequestTarget.java
> >> :520)
> >> at
> >> org.apache.wicket.request.AbstractRequestCycleProcessor.respond(
> >> AbstractRequestCycleProcessor.java:103)
> >> at
> >> org.apache.wicket.RequestCycle.processEventsAndRespond(
> RequestCycle.java
> >> :1037)
> >> at org.apache.wicket.RequestCycle.step(RequestCycle.java:1107)
> >> at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1176)
> >> at org.apache.wicket.RequestCycle.request(RequestCycle.java:499)
> >> at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java
> >> :257)
> >> at
> >> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java
> >> :127)
> >> --
> >> View this message in context:
> >>
> http://www.nabble.com/java.util.ConcurrentModificationException-with-RefreshingView-%28AGAIN%21-%21-%21%21%29-tf4101508.html#a11663707
> >> Sent from the Wicket - User mailing list archive at Nabble.com.
> >>
> >>
> >>
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