Validation of inter-dependent fields

[Maxence Dewil]

Hello,   My application has to validate a form where a date depends on another date (the first one must be < the next one), but the JSF validation is component-oriented. How can I handle that in an elegant way?   A solution is described here but I don’t understand how to achieve it :  http://weblogs.java.net/blog/johnreynolds/archive/2004/07/improve_jsf_by_1.html (#Validation of Inter-Dependent Fields).   Regards,   Maxence Dewil