[jira] Reopened: (WICKET-808) print out warning instead of letting NPE happen for repeaters when they have null elements.

["Eelco Hillenius (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/WICKET-808?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eelco Hillenius reopened WICKET-808:
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> 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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