diff options
Diffstat (limited to 'id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/StatisticLogDBUtils.java')
-rw-r--r-- | id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/StatisticLogDBUtils.java | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/StatisticLogDBUtils.java b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/StatisticLogDBUtils.java new file mode 100644 index 000000000..b60075788 --- /dev/null +++ b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/StatisticLogDBUtils.java @@ -0,0 +1,166 @@ +package at.gv.egovernment.moa.id.commons.db; + +import java.util.Properties; + +import org.apache.commons.lang3.StringUtils; +import org.hibernate.HibernateException; +import org.hibernate.Session; +import org.hibernate.SessionFactory; +import org.hibernate.Transaction; +import org.hibernate.cfg.Configuration; +import org.hibernate.service.ServiceRegistry; +import org.hibernate.service.ServiceRegistryBuilder; + +import at.gv.egovernment.moa.id.commons.db.ex.MOADatabaseException; +import at.gv.egovernment.moa.logging.Logger; + +public final class StatisticLogDBUtils { + + private static SessionFactory sessionFactory; + private static ServiceRegistry serviceRegistry; + + @SuppressWarnings("rawtypes") + private static final ThreadLocal THREAD_LOCAL_STATISTIC = new ThreadLocal(); + private static boolean automaticSessionHandling = false; + + private static final String[] AUTOMATIC_SESSION_HANDLING_VALUES = new String[] { "jta", "thread" }; + private static final String SESSION_HANDLING_KEY = "hibernate.current_session_context_class"; + + protected StatisticLogDBUtils() { } + + public static void initHibernate(Configuration config, Properties hibernateProperties) { + + String scm = StringUtils.trimToNull(hibernateProperties.getProperty(SESSION_HANDLING_KEY)); + if (scm != null) { + automaticSessionHandling = scm.indexOf(AUTOMATIC_SESSION_HANDLING_VALUES[0]) != -1 || scm.indexOf(AUTOMATIC_SESSION_HANDLING_VALUES[1]) != -1; + } + Logger.debug("Evaluating hibernate property \"" + SESSION_HANDLING_KEY + "\"."); + if (automaticSessionHandling) { + Logger.info("Hibernate is automatically handling session context management."); + } else { + Logger.info("Hibernate is NOT automatically handling session context management. Using build-in ThreadLocal session handling."); + } + try { + //Create the SessionFactory + Logger.debug("Creating initial StatisicLogger session factory..."); + + config.configure(); + serviceRegistry = new ServiceRegistryBuilder().applySettings(config.getProperties()).buildServiceRegistry(); + sessionFactory = config.buildSessionFactory(serviceRegistry); + Logger.debug("Initial StatisicLogger session factory successfully created."); + + } catch (Throwable ex) { + Logger.error("Initial StatisicLogger session factory creation failed: " + ex.getMessage()); + throw new ExceptionInInitializerError(ex); + } + } + + /** + * Checks if a session factory is currently available. If necessary a new + * session factory is created. + * + * @return current (or new) session factory + * @throws HibernateException + * thrown if a hibernate error occurs + */ + public static Session getCurrentSession() { + if (automaticSessionHandling) { + return sessionFactory.getCurrentSession(); + } + Session session = (Session) THREAD_LOCAL_STATISTIC.get(); + // Open a new Session, if this Thread has none yet + if (session == null || !session.isConnected()) { + session = getNewSession(); + } + return session; + } + + @SuppressWarnings("unchecked") + public static Session getNewSession() { + if (automaticSessionHandling) { + Logger.warn("Session is being automatically handled by hibernate. Therefore this session maybe not being newly created. Use HibernateUtil.getCurrentSession() instead."); + return sessionFactory.getCurrentSession(); + } + Session session = (Session) THREAD_LOCAL_STATISTIC.get(); + if (session != null) { + Logger.warn("Previous StatisicLogger session has not been closed; closing session now."); + closeSession(); + } + Logger.debug("Opening new StatisicLogger hibernate session..."); + try { + session = sessionFactory.openSession(); + THREAD_LOCAL_STATISTIC.set(session); + } catch (HibernateException hex) { + Logger.error(hex.getMessage()); + } + return session; + } + + /** + * Closes the current session. + * + * @throws HibernateException + * thrown if session is already closed or a hibernate error + * occurs. + */ + @SuppressWarnings("unchecked") + public static void closeSession() { + if (automaticSessionHandling) { + Logger.warn("Session is being automatically handled by hibernate. Therefore the current session cannot be closed on demand."); + return; + } + Logger.debug("Closing current StatisicLogger hibernate session..."); + Session session = (Session) THREAD_LOCAL_STATISTIC.get(); + THREAD_LOCAL_STATISTIC.set(null); + if (session != null) { + try { + session.close(); + + } catch (HibernateException hex) { + Logger.error(hex.getMessage()); + } + } + } + + public static boolean saveOrUpdate(Object dbo) throws MOADatabaseException { + Transaction tx = null; + try { + Session session = StatisticLogDBUtils.getCurrentSession(); + + synchronized (session) { + tx = session.beginTransaction(); + session.saveOrUpdate(dbo); + tx.commit(); + } + + Logger.info("Insert advanced statistic log entry into database"); + return true; + + } catch(HibernateException e) { + Logger.warn("Error during StatisicLogger database saveOrUpdate. Rollback.", e); + tx.rollback(); + throw new MOADatabaseException(e); + } + } + + public static boolean delete(Object dbo) { + Transaction tx = null; + try { + Session session = StatisticLogDBUtils.getCurrentSession(); + + synchronized (session) { + tx = session.beginTransaction(); + session.delete(dbo); + tx.commit(); + } + + return true; + + } catch(HibernateException e) { + Logger.warn("Error during StatisicLogger database delete. Rollback.", e); + tx.rollback(); + return false; + } + } + +} |