anonymous wrote : If the field is null the hibernate validator won't run | As I understood, required="true" is needed to be sure that any hibernate validators specified will be run with s:validate(All). But what about: - if null value, I don't care (a value is optional) - but if a value is written, it needs to respect a pattern, like no punctuation or no number inside the string If I put a required="true" to get the hibernate validation in the second case, then the first case is always rejected by jsf. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3981718#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...