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Posted to dev@tapestry.apache.org by "Kevin Menard (JIRA)" <de...@tapestry.apache.org> on 2008/03/12 21:34:46 UTC
[jira] Commented: (TAPESTRY-2253) Required Validator can produce
NullPointerExceptions
[ https://issues.apache.org/jira/browse/TAPESTRY-2253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12578013#action_12578013 ]
Kevin Menard commented on TAPESTRY-2253:
----------------------------------------
I'd make the change to help users that shoot themselves in the foot, but under no circumstance should null be returned from toString(). It violates the general contract of the method.
> Required Validator can produce NullPointerExceptions
> ----------------------------------------------------
>
> Key: TAPESTRY-2253
> URL: https://issues.apache.org/jira/browse/TAPESTRY-2253
> Project: Tapestry
> Issue Type: Improvement
> Components: tapestry-core
> Affects Versions: 5.0.12
> Reporter: Kristian Marinkovic
>
> the validate method of the Required validator contains following code line:
> if (value == null || value.toString().equals(""))...
> if the toString method returns null an exception will occur (happened to me accidentally :))
> this code line should at least be changed to:
> if (value == null || "".equals(value.toString())... to prevent NPE
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