Creating an EJB 3.0 Web Service - EJB 3.0 Database Persistence with Oracle Fusion Middleware 11g - page 396

catalogEntry =catalogEntry + " Journal: " +
element.getJournal() + " Publisher: " +
element.getPublisher() + " Edition: " +
element.getEdition() + " Title: " +
element.getTitle() + " Author: " +
element.getAuthor();
}
catalogEntry = catalogEntry + " All Titles: ";
List allTitles =em.createQuery("SELECT c from Catalog c").
getResultList();
for (Iterator iter = allTitles.iterator(); iter.hasNext(); ) {
Catalog element = (Catalog)iter.next();
catalogEntry = catalogEntry + " Title: " +
element.getTitle();
}
catalogEntry = catalogEntry + " All catalog entity instances: ";
List allCatalogEntries = em.createQuery("SELECT c from
Catalog c").getResultList();
for (Iterator iter = allCatalogEntries.iterator();
iter.hasNext(); ) {
Catalog element = (Catalog)iter.next();
catalogEntry = catalogEntry + " Catalog Entry: " + element;
}
} catch (Exception e) {
catalogEntry = e.getMessage();
}
em.clear();
return catalogEntry;
}
public void persistEntity(Catalog entity) {
em.persist(entity);
em.flush();
}
}
The corresponding remote interface is listed as follows:
package model;
import java.util.List;
import javax.ejb.Remote;