You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@wicket.apache.org by "Martin Grigorov (JIRA)" <ji...@apache.org> on 2010/11/12 13:59:14 UTC
[jira] Commented: (WICKET-3162) NPE when the underlaying model
changed and ajax re-appear.
[ https://issues.apache.org/jira/browse/WICKET-3162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12931381#action_12931381 ]
Martin Grigorov commented on WICKET-3162:
-----------------------------------------
Can you please create a quickstart that reproduce the problem ?
http://wicket.apache.org/start/quickstart.html
> NPE when the underlaying model changed and ajax re-appear.
> -----------------------------------------------------------
>
> Key: WICKET-3162
> URL: https://issues.apache.org/jira/browse/WICKET-3162
> Project: Wicket
> Issue Type: Bug
> Affects Versions: 1.4.13
> Environment: wicket 1.4.13
> Reporter: smallufo
> Attachments: CommentsPanel.html, CommentsPanel.java, Dao.java, DaoImpl.java, HomePage.html, HomePage.java, PulldownBorder.html, PulldownBorder.java, WicketApplication.java
>
>
> <span wicket:id="border">
> <wicket:container wicket:id="commentsView">
> <div>
> //comment layout
> </div>
> </wicket:container>
> </span>
> And the code :
> add(border);
> ListView<Comment> commentsView = new ListView<Comment>("commentsView" , new LoadableDetachableModel<List<Comment>>()
> {
> @Override
> protected List<Comment> load() {
> return commentDao.getComments(0 , 10);
> }
> })
> {
> @Override
> protected void populateItem(ListItem<Comment> item) {
> //comment layout
> }
> };
> border.add(commentsView);
> commentsView.setReuseItems(false);
> The Panel has a border , with a clickable button , can be used to collapse/expand the content of the border with AJAX.
> Here is my steps :
> 1. I first collapse the panel .
> 2. Then open another browser panel , add a comment. (the underlaying data model is changed)
> 3. Back to the original panel , expand the panel ...
> And I got a NPE :
> 2010-11-12 05:19:12,661 ERROR wicket.RequestCycle - Exception in rendering component: [MarkupContainer [Component id = _body]]
> org.apache.wicket.WicketRuntimeException: Exception in rendering component: [MarkupContainer [Component id = _body]]
> at org.apache.wicket.Component.renderComponent(Component.java:2725)
> at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1538)
> at org.apache.wicket.Component.render(Component.java:2517)
> at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1440)
> at org.apache.wicket.MarkupContainer.renderComponentTagBody(MarkupContainer.java:1603)
> at org.apache.wicket.MarkupContainer.onComponentTagBody(MarkupContainer.java:1527)
> at org.apache.wicket.Component.renderComponent(Component.java:2686)
> at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1538)
> ...
> Caused by: java.lang.NullPointerException
> at org.apache.wicket.markup.html.border.Border$BorderBodyContainer.onComponentTagBody(Border.java:375)
> at org.apache.wicket.Component.renderComponent(Component.java:2686)
> ... 45 more
>
>
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.