Hi, I'm not sure but I had such problems with a ListView because I added
some elements to my ArrayList in the
onBeforeRender() method of my page, so the list was populated, but the
rendering failed because there was a new element that was not populated
because it didn't exists before.
it was something like that
Matthieu
2007/6/7, Johannes Schneider <[EMAIL PROTECTED]>:
Hi,
I try to reproduce the FileUploadDemo using Wicket 1.3.0. But I get this
NPE and really don't know what the problem could be. Any hints?
Thanks,
Johannes Schneider
WicketMessage: Exception in rendering component: [MarkupContainer
[Component id = _extend, page =
de.cvjm.dusslingen.web.admin.ResourceUpload, path =
21:_<body>:_child:_extend.MarkupInheritanceResolver$TransparentWebMarkupContainer,
isVisible = true, isVersioned = true]]
Root cause:
java.lang.NullPointerException
at org.apache.wicket.markup.html.list.ListView.renderItem(ListView.java
:645)
at
org.apache.wicket.markup.html.list.ListView.renderChild(ListView.java:633)
at
org.apache.wicket.markup.repeater.AbstractRepeater.onRender(
AbstractRepeater.java:87)
at org.apache.wicket.Component.render(Component.java:1685)
at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1179)
at
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