Allow @JSFValidator and @JSFConverter to define custom tagHandler class
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Key: MYFACES-2938
URL: https://issues.apache.org/jira/browse/MYFACES-2938
Project: MyFaces Core
Issue Type: Improvement
Components: JSR-314
Affects Versions: 2.0.2
Reporter: Leonardo Uribe
Assignee: Leonardo Uribe
Reviewing myfaces commons, it was notice that @JSFValidator and @JSFConverter
does not allow to have a custom tagHandler class, but there is one case this
could be wanted.
On myfaces commons there exists a base class called
org.apache.myfaces.commons.validator.ValidatorBase. This class is necessary to
do two things:
1. Allow validators to have ValueBinding/ValueExpression instances that will be
evaluated on validation time, not on build view time.
2. Provide utility methods for handle messages.
This works well on jsp, but it does not on facelets, because ValueExpression
instances are not mapped calling setValueExpression() method. This is difficult
to see because usually for converters and validators does not have properties
with EL expressions or usually does not change.
We need to include two changes on myfaces builder plugin:
1. Allow @JSFValidator and @JSFConverter to define custom tagHandler class
2. Add a property to indicate when the base class allow set ValueExpressions
calling setValueExpression method, so the template can decide if it calls
setValueExpression or evaluate it at construction time, like
evaluateELOnValidation. It could be also wanted to include a new goal for
generate converter classes.
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