com.netspective.medigy.util.HibernateUtil.java Source code

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Here is the source code for com.netspective.medigy.util.HibernateUtil.java

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/*
 * Copyright (c) 2000-2003 Netspective Communications LLC. All rights reserved.
 *
 * Netspective Communications LLC ("Netspective") permits redistribution, modification and use of this file in source
 * and binary form ("The Software") under the Netspective Source License ("NSL" or "The License"). The following
 * conditions are provided as a summary of the NSL but the NSL remains the canonical license and must be accepted
 * before using The Software. Any use of The Software indicates agreement with the NSL.
 *
 * 1. Each copy or derived work of The Software must preserve the copyright notice and this notice unmodified.
 *
 * 2. Redistribution of The Software is allowed in object code form only (as Java .class files or a .jar file
 *    containing the .class files) and only as part of an application that uses The Software as part of its primary
 *    functionality. No distribution of the package is allowed as part of a software development kit, other library,
 *    or development tool without written consent of Netspective. Any modified form of The Software is bound by these
 *    same restrictions.
 *
 * 3. Redistributions of The Software in any form must include an unmodified copy of The License, normally in a plain
 *    ASCII text file unless otherwise agreed to, in writing, by Netspective.
 *
 * 4. The names "Netspective", "Axiom", "Commons", "Junxion", and "Sparx" are trademarks of Netspective and may not be
 *    used to endorse products derived from The Software without without written consent of Netspective. "Netspective",
 *    "Axiom", "Commons", "Junxion", and "Sparx" may not appear in the names of products derived from The Software
 *    without written consent of Netspective.
 *
 * 5. Please attribute functionality where possible. We suggest using the "powered by Netspective" button or creating
 *    a "powered by Netspective(tm)" link to http://www.netspective.com for each application using The Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED REPRESENTATIONS AND
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT,
 * ARE HEREBY DISCLAIMED.
 *
 * NETSPECTIVE AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE OR ANY THIRD PARTY AS A
 * RESULT OF USING OR DISTRIBUTING THE SOFTWARE. IN NO EVENT WILL NETSPECTIVE OR ITS LICENSORS BE LIABLE FOR ANY LOST
 * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THE SOFTWARE, EVEN
 * IF HE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 *
 * @author Shahid N. Shah
 */

/*
 * Copyright (c) 2005 Your Corporation. All Rights Reserved.
 */
package com.netspective.medigy.util;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.MappingException;
import org.hibernate.connection.ConnectionProviderFactory;
import org.hibernate.connection.ConnectionProvider;
import org.hibernate.cfg.Configuration;
import org.hibernate.exception.NestableRuntimeException;

import java.sql.Connection;
import java.sql.SQLException;

public class HibernateUtil {
    private static final Log log = LogFactory.getLog(HibernateUtil.class);
    private static SessionFactory sessionFactory;
    private static ConnectionProvider connectionProvider;
    private static final ThreadLocal<Session> threadSession = new ThreadLocal<Session>();
    private static final ThreadLocal<Transaction> threadTransaction = new ThreadLocal<Transaction>();

    public static void setConfiguration(Configuration cfg) throws HibernateException {
        try {
            sessionFactory = cfg.buildSessionFactory();
            connectionProvider = ConnectionProviderFactory.newConnectionProvider(cfg.getProperties());
        } catch (MappingException e) {
            throw e;
        }
    }

    public static Connection getNewConnection() {
        try {
            return connectionProvider.getConnection();
        } catch (SQLException e) {
            log.error(e);
            throw new NestableRuntimeException(e);
        }
    }

    public static void closeSessionFactory() {
        if (sessionFactory != null)
            sessionFactory.close();
    }

    public static Session getSession() {
        Session session = threadSession.get();
        if (session == null) {
            try {
                session = sessionFactory.openSession();
                threadSession.set(session);
            } catch (HibernateException e) {
                log.error(e);
                throw new NestableRuntimeException(e);
            }
        }

        return session;
    }

    public static void closeSession() {
        Session session = threadSession.get();
        if (session != null) {
            threadSession.set(null);
            try {
                if (session.isOpen())
                    session.close();
            } catch (HibernateException e) {
                log.error(e);
                throw new NestableRuntimeException(e);
            }
        }
    }

    public static void beginTransaction() {
        Transaction tx = threadTransaction.get();
        if (tx == null) {
            try {
                tx = getSession().beginTransaction();
                threadTransaction.set(tx);
            } catch (HibernateException e) {
                log.error(e);
                throw new NestableRuntimeException(e);
            }
        }
    }

    public static void commitTransaction() {
        Transaction tx = threadTransaction.get();
        try {
            threadTransaction.set(null);
            if (tx != null && !tx.wasCommitted() && !tx.wasRolledBack())
                tx.commit();
        } catch (HibernateException e) {
            log.error(e);
            throw new NestableRuntimeException(e);
        }
    }

    public static void rollbackTransaction() {
        Transaction tx = threadTransaction.get();
        try {
            threadTransaction.set(null);
            if (tx != null && !tx.wasCommitted() && !tx.wasRolledBack())
                tx.rollback();
        } catch (HibernateException e) {
            log.error(e);
            throw new NestableRuntimeException(e);
        }
    }
}