Primefaces DataTable + JPA / Hibernate Pagination

It'll be so cool if i can somehow combine both of these framework together in pagination.

Clicking on the next or prev button on the Primefaces Datatable will trigger the query, limiting the query result using JPA.

Also perhaps with some mechanism, the primefaces component can also get the total pages from another JPA select count query ?

Is there any example on how to put these into work ?

Please share your experiences on this.

Thank you !