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https://issues.apache.org/jira/browse/WICKET-808?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eelco Hillenius resolved WICKET-808.
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Resolution: Fixed
> print out warning instead of letting NPE happen for repeaters when they have
> null elements.
> -------------------------------------------------------------------------------------------
>
> Key: WICKET-808
> URL: https://issues.apache.org/jira/browse/WICKET-808
> Project: Wicket
> Issue Type: Improvement
> Affects Versions: 1.3.0-beta2
> Reporter: Eelco Hillenius
> Assignee: Eelco Hillenius
> Fix For: 1.3.0-beta3
>
>
> Currently, when you provide null elements in the model (renderIterator),
> you'll get a NPE exception further down the line (in ListView#renderItem for
> instance). We should either throw an meaningful exception earlier, or we
> should make repeaters more lenient and just print out a warning message. I
> opt for the latter. This should be clear enough when developing (you probably
> would wonder where your data is to start with) and a lot better than
> unexpectedly getting NPEs in a production systems in case you missed it.
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