I have a problem with the validation of a and updating its content.
Basically when the inputText validation fails, it never gets updated
This is the notorious case of 'input elements' (EditableValueHolders actually) that once validation has failed for them can never be updated again via AJAX re-rendering.
See:
A work-around is to create an action listener that resets the components that are to be re-rendered. See the last page of this: http://community.jboss.org/message/620000
If this behavior bothers you (I guess it does), then please don't hesitate to vote for JAVASERVERFACES_SPEC_PUBLIC-1060 and if possible leave a comment telling what you expected and why.