got it I definately was trying to extend there scope for something they can't
be used for :),
my goal is to get the users to only render what they have to in the vector.
I do not want them to have to re-render the entire Vector each time. The
vector will be constantly added too, there are no modifications to existing
data however. having the user re-render the entire vector becomes
impractical.
I have done some reading on nabble and I require the page to display the
current items without having to re-render them, and rendering new Vector
items as they become available. From what I can see, the solution to this
lies in javascript DOMs... *sigh*... im allergic to javascript :)
Thanks for your assistance again igor.
igor.vaynberg wrote:
>
> 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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