appserver/tests/appserv-tests/devtests/ejb/ejb31/embedded/modulewithinheritance/ejb/SimpleEjb.java

/*
 * Copyright (c) 2017, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package org.glassfish.tests.ejb.sample;

import java.util.Collection;
import java.util.Date;

import javax.ejb.Stateless;

import javax.persistence.PersistenceContext;
import javax.persistence.EntityManager;
import javax.persistence.Query;

/**
 * @author Jerome Dochez
 */
@Stateless
public class SimpleEjb extends SimpleBase {

    @PersistenceContext(unitName="test") EntityManager em;

    public String testJPA() {
        String result = null;
        Query q = em.createNamedQuery("SimpleEntity.findAll");
        Collection entities = q.getResultList();
        int s = entities.size();
        for (Object o : entities) {
            SimpleEntity se = (SimpleEntity)o;
            SimpleRelated sr = se.getRelated();
            System.out.println("Found related: " + ((sr == null)? sr : sr.getName()));
        }

        if (s < 10) {
            System.out.println("Record # " + (s + 1));
            SimpleEntity e = new SimpleEntity("Entity number " + (s + 1) + " created at " + new Date());
            SimpleRelated r = new SimpleRelated("Related to " + (s + 1));
            e.setRelated(r);
            r.setEntity(e);
            em.persist(e);
            result = "Entity number " + (s + 1);
        } else {
            result = "10 entities created";
        }
        return result;

    }
}