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https://issues.apache.org/jira/browse/TAPESTRY-2253?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Howard M. Lewis Ship closed TAPESTRY-2253.
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Resolution: Fixed
Fix Version/s: 5.0.12
> A brain dead implementation of toString() on a custom data object can cause
> the Required validator to throw a NullPointerExcepton
> ---------------------------------------------------------------------------------------------------------------------------------
>
> 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
> Assignee: Howard M. Lewis Ship
> Priority: Trivial
> Fix For: 5.0.12
>
>
> 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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