Problem solved! It was only a matter of knowing the right sintax.
Commons Validators do include the Regular Expression validator.
Here is an example for validating strings composed by lowercase letters,
uppercase letters, digits and spaces:
Vincenzo Caselli
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h
I began to use MyFaces RegExp validator
(xmlns:t="http://myfaces.apache.org/tomahawk) that is included with
Appfuse-JSF archetype. It is indeed very powerful. Consider that with a
simple line like this:
you can constraint a field value to accept only digits and uppercase
letters.
In the case o
