Following is the structure that I am using..

Each Contact has a Location,i.e town info but Location is a hierarchical table eg. (country->state->city->town )

Need the ability to search for Contacts that directly or indirectly fall under country named USA..

How do I go ahead doing such configuration using hibernate search ?

Hi,
you would use @IndexedEmbedded to index-embed the whole hierarchy in the Contact.

The approach is to have a nicely normalized database, but have it all de-normalized in the Lucene index.

http://docs.jboss.org/hibernate/search/4.1/reference/en-US/html_single/#search-mapping-associated