org.pentaho.pac.server.common.config.PropertyLoader.java Source code

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Here is the source code for org.pentaho.pac.server.common.config.PropertyLoader.java

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/*
 * This program is free software; you can redistribute it and/or modify it under the 
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software 
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this 
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html 
 * or from the Free Software Foundation, Inc., 
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * Copyright 2008 - 2009 Pentaho Corporation.  All rights reserved.
*/
package org.pentaho.pac.server.common.config;

import org.hibernate.Session;
import org.hibernate.Transaction;
import org.pentaho.pac.server.common.HibernateSessionFactory;

public class PropertyLoader {

    private static PropertyLoader loader = new PropertyLoader();

    public static PropertyLoader getInstance() {
        return loader;
    }

    public <E extends PacProperty> PropertyCollection<E> getProperties(Class<E> module) {
        Session s = null;
        Transaction tx = null;

        try {
            s = HibernateSessionFactory.getSession("MGMT-SERVICES"); //$NON-NLS-1$
            tx = s.beginTransaction();
            @SuppressWarnings("unchecked")
            PropertyCollection<E> props = new PropertyCollection<E>(s.createCriteria(module).list());
            return props;
        } finally {
            if (s != null)
                s.disconnect();
            if (tx != null)
                tx.commit();
        }

    }

    public <E extends PacProperty> void persist(PropertyCollection<E> props) {
        Session s = null;
        Transaction tx = null;

        try {
            s = HibernateSessionFactory.getSession("MGMT-SERVICES"); //$NON-NLS-1$
            tx = s.beginTransaction();
            for (PacProperty prop : props) {
                s.saveOrUpdate(prop);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {

            if (s != null)
                s.disconnect();
            if (tx != null)
                tx.commit();
        }
    }
}