Hibernate example source code file (EventManager.java)

This example Hibernate source code file (EventManager.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Hibernate tags/keywords

account, event, eventmanager, holidaycalendar, list, list, long, long, person, person, phonenumber, session, session, string, util

The Hibernate EventManager.java source code

/**
 *  Copyright 2003-2010 Terracotta, Inc.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.hibernate.test.domain;

import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;

public class EventManager {

	private final SessionFactory sessionFactory;

	public EventManager(SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;
	}

	public List listEmailsOfEvent(Long eventId) {
		Session session = sessionFactory.getCurrentSession();
		session.beginTransaction();

		List emailList = new ArrayList();
		Event event = (Event)session.load(Event.class, eventId);
		for (Iterator it = event.getParticipants().iterator(); it.hasNext(); ) {
			Person person = (Person)it.next();
			emailList.addAll(person.getEmailAddresses());
		}

		session.getTransaction().commit();
		return emailList;
	}

	public Long createAndStoreEvent(String title, Person organizer, Date theDate) {

		Session session = sessionFactory.getCurrentSession();

		session.beginTransaction();

		Event theEvent = new Event();
		theEvent.setTitle(title);
		theEvent.setDate(theDate);
		theEvent.setOrganizer(organizer);

		Long eventId = (Long)session.save(theEvent);

		session.getTransaction().commit();
		return eventId;
	}

	public Long createAndStorePerson(String firstName, String lastName) {

		Session session = sessionFactory.getCurrentSession();

		session.beginTransaction();

		Person person = new Person();
		person.setFirstname(firstName);
		person.setLastname(lastName);

		Long personId = (Long)session.save(person);

		session.getTransaction().commit();
		return personId;
	}

	public Long createAndStorePerson(Person person) {

		Session session = sessionFactory.getCurrentSession();

		session.beginTransaction();

		Long personId = (Long)session.save(person);

		session.getTransaction().commit();
		return personId;
	}

	public List listEvents() {

		Session session = sessionFactory.getCurrentSession();

		session.beginTransaction();

		List result = session.createQuery("from Event").setCacheable(true).list();

		session.getTransaction().commit();

		return result;
	}

	/**
	 * Call setEntity() on a cacheable query - see FORGE-265
	 */
	public List listEventsOfOrganizer(Person organizer) {

		Session session = sessionFactory.getCurrentSession();

		session.beginTransaction();

		Query query = session.createQuery("from Event ev where ev.organizer = :organizer");

		query.setCacheable(true);
		query.setEntity("organizer", organizer);
		List result = query.list();

		session.getTransaction().commit();

		return result;
	}

	/**
	 * Use a Criteria query - see FORGE-247
	 */
	public List listEventsWithCriteria() {
		Session session = sessionFactory.getCurrentSession();

		session.beginTransaction();

		List result = session.createCriteria(Event.class)
			.setCacheable(true)
			.list();

		session.getTransaction().commit();

		return result;
	}

	public void addPersonToEvent(Long personId, Long eventId) {

		Session session = sessionFactory.getCurrentSession();
		session.beginTransaction();

		Person aPerson = (Person)session.load(Person.class, personId);
		Event anEvent = (Event)session.load(Event.class, eventId);

		aPerson.getEvents().add(anEvent);

		session.getTransaction().commit();
	}

	public Long addPersonToAccount(Long personId, Account account) {
		Session session = sessionFactory.getCurrentSession();
		session.beginTransaction();

		Person aPerson = (Person)session.load(Person.class, personId);
		account.setPerson(aPerson);

		Long accountId = (Long)session.save(account);

		session.getTransaction().commit();
		return accountId;
	}

	public Account getAccount(Long accountId) {
		Session session = sessionFactory.getCurrentSession();
		session.beginTransaction();

		Account account = (Account)session.load(Account.class, accountId);

		session.getTransaction().commit();
		return account;
	}

	public void addEmailToPerson(Long personId, String emailAddress) {

		Session session = sessionFactory.getCurrentSession();
		session.beginTransaction();

		Person aPerson = (Person)session.load(Person.class, personId);

		// The getEmailAddresses() might trigger a lazy load of the collection
		aPerson.getEmailAddresses().add(emailAddress);

		session.getTransaction().commit();
	}

	public void addPhoneNumberToPerson(Long personId, PhoneNumber pN) {

		Session session = sessionFactory.getCurrentSession();
		session.beginTransaction();

		Person aPerson = (Person)session.load(Person.class, personId);
		pN.setPersonId(personId.longValue());
		aPerson.getPhoneNumbers().add(pN);

		session.getTransaction().commit();
	}

	public void addTalismanToPerson(Long personId, String talisman) {

		Session session = sessionFactory.getCurrentSession();
		session.beginTransaction();

		Person aPerson = (Person)session.load(Person.class, personId);
		aPerson.addTalisman(talisman);

		session.getTransaction().commit();
	}

	public Long createHolidayCalendar() {

		Session session = sessionFactory.getCurrentSession();
		session.beginTransaction();

		// delete all existing calendars
		List calendars = session.createQuery("from HolidayCalendar").setCacheable(true).list();
		for (ListIterator li = calendars.listIterator(); li.hasNext(); ) {
			session.delete(li.next());
		}

		HolidayCalendar calendar = new HolidayCalendar();
		calendar.init();

		Long calendarId = (Long)session.save(calendar);

		session.getTransaction().commit();
		return calendarId;
	}

	public HolidayCalendar getHolidayCalendar() {
		Session session = sessionFactory.getCurrentSession();

		session.beginTransaction();

		List calendars = session.createQuery("from HolidayCalendar").setCacheable(true).list();

		session.getTransaction().commit();

		return calendars.isEmpty() ? null : (HolidayCalendar)calendars.get(0);
	}
}