9.1. Query API
A query in Java Persistence is a full-blown Java interface that you obtain at runtime from the entity manager:
package javax.persistence;
public interface Query {
public List getResultList( );
public Obje...
9.2. EJB QL
Now that you have a basic understanding of how to work with Query objects, you can learn what features are available to you for creating your own EJB QL queries. EJB QL is expressed in terms of the abstract persistence schema of an ent...
9.3. Native Queries
EJB QL is a very rich syntax and should meet most of your querying needs. Sometimes, though, you want to take advantage of certain proprietary capabilities that are available only on a specific vendor's database.
The entity ma...
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