xml validation with indexed properties.

[Constantine Schokk]

I'm using struts and got issue with their xml validation framework. I have
form with some indexed properties where element is just plain String. And I
need make validation for it. I tried to use indexedListProperty for this
case, but it doesn't work and as I read in 'Struts in Action' it works only
for indexed properties with nested properties(i.e.
indexedProperty[].nested) and it's not suits for my issue. Maybe anyone
knows how to resolve this?