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https://issues.apache.org/jira/browse/MYFACES-4319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17039895#comment-17039895
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Thomas Andraschko commented on MYFACES-4319:
--------------------------------------------
Can you please provide a sample maven project? (you can fork primefaces-test on
github, then we can compare easily the behavior of myfaces vs mojarra)
> Null submitted values handling error
> ------------------------------------
>
> Key: MYFACES-4319
> URL: https://issues.apache.org/jira/browse/MYFACES-4319
> Project: MyFaces Core
> Issue Type: Bug
> Affects Versions: 2.3.6
> Environment: Open Liberty 20.0.0.1
> Reporter: Fabrício Fonseca
> Priority: Major
>
> When running MyFaces with it seems like an error occurs preventing "Process
> Validations" phase to execute if you try to submit empty string values.
>
> I found out when trying to use the TrimConverter utility class from the
> OmniFaces library. This is a Faces Converter which trim all submitted string
> values. If the trimmed value has a length of 0, the converter returns null.
> Whenever i try to submit a form leaving the fields empty, the properties of
> the backing bean are not getting validated neither the bean method associated
> with the submit action is invoked. The form is rendered again.
>
> Steps to reproduce:
>
> 1- Create a form with some fields linked with corresponding backing bean
> string properties;
>
> 2 - Add @NotNull constraint to the backing bean properties;
>
> 3 - Create a Faces Converter which converts empty string values to null.
> Attach the converter to java.lang.String class (through faces-config
> <converter-for-class> element)
>
> 4 - Run the project and try to submit empty string values;
>
>
> Please note this error may be related to this:
> https://stackoverflow.com/questions/56279977/blank-input-string-fields-submitted-as-empty-strings-vs-null-jsf-2-3-myfaces
>
>
>
>
>
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