How to restrict an input to a variable amount of numbers only with PrimeFaces inputMask element

Question

I need to define something similar to this regex:

[0-9]{1, 5}

On a PrimeFaces element:

Answer 1

KeyFilter from PrimeFaces Extensions looks exactly as something you need: http://fractalsoft.net/primeext-showcase-mojarra/views/keyFilter.jsf

According to documentation and example, it is driven by regexp, and functions exactly as it should: blocking the ability to type something not passing to the regexp.