I have a doubt about converter. If a put a <converter> on my faces-config.xml, it'll converter every objects of the class I put in <converter-for-class>, right? Does this makes my application much slower than without it? Does the jboss call some default converter if I do not point one?
And, in my case, the converter just returns null to the back bean if it get a empty string from the form. Is there some known side effects for doing this?