Building an EJB 3.0 Persistence Model with Oracle JDeveloper - EJB 3.0 Database Persistence with Oracle Fusion Middleware 11g - page 96

public Object mergeEntity(Object entity) {
return em.merge(entity);
}
public Object persistEntity(Object entity) {
em.persist(entity);
return entity;
}
/** <code>select o from Catalog o</code> */
public List<Catalog> queryCatalogFindAll() {
return em.createNamedQuery("Catalog.findAll").getResultList();
}
/** <code>select o from Catalog o</code> */
public List<Catalog> queryCatalogFindAllByRange(int firstResult,
int maxResults) {
Query query = em.createNamedQuery("Catalog.findAll");
if (firstResult > 0) {
query = query.setFirstResult(firstResult);
}
if (maxResults > 0) {
query = query.setMaxResults(maxResults);
}
return query.getResultList();
}
public void removeCatalog(Catalog catalog) {
catalog = em.find(Catalog.class, catalog.getId());
em.remove(catalog);
}
}
The remote business interface is listed next:
package model;
import java.util.List;
import javax.ejb.Remote;
@Remote
public interface CatalogTestSessionEJB {
List<Catalog> queryCatalogFindAll();
String test();
List<Catalog> queryCatalogFindAllByRange(int firstResult,
int maxResults);
void removeCatalog(Catalog catalog);
}