[Xapian-discuss] Category Search with Values

[Senior Boss]

Hi, I hope that someone can help me. I have intention to use xapian for one portal of mine in which 
the consumers can post messages that are divided for category.
When I index a new post I also add to the object document the value with the name of the category.  
How can I exploit all of this to effect searches filtered in base to the category?  
Is there another way to do it without using the meta-data value?
Thanks

Francesco Bruno