java - utilizing JPA Named Queries -


when create entity class database in netbeans, gives me option create named queries persistent fields. accordingly, see these named queries listed @ top of entity class.

what these queries, , how can utilize/"call" them?

i'm aware question more general preferred on so, i'm happy accept link tutorial answers these questions, i've been unable find 1 myself.

see

if have:

@namedquery(name="country.findall", query="select c country c") public class country {   ... }

use with:

typedquery<country> query = em.createnamedquery("country.findall",country.class); list<country> results = query.getresultlist();

see also:


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