001/**
002 *   GRANITE DATA SERVICES
003 *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 *   This file is part of the Granite Data Services Platform.
006 *
007 *   Granite Data Services is free software; you can redistribute it and/or
008 *   modify it under the terms of the GNU Lesser General Public
009 *   License as published by the Free Software Foundation; either
010 *   version 2.1 of the License, or (at your option) any later version.
011 *
012 *   Granite Data Services is distributed in the hope that it will be useful,
013 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
014 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 *   General Public License for more details.
016 *
017 *   You should have received a copy of the GNU Lesser General Public
018 *   License along with this library; if not, write to the Free Software
019 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 *   USA, or see <http://www.gnu.org/licenses/>.
021 */
022package org.granite.cdi;
023
024import javax.enterprise.inject.spi.BeanManager;
025import javax.naming.InitialContext;
026import javax.naming.NameNotFoundException;
027import javax.servlet.ServletContext;
028
029
030public class CDIUtils {
031        
032    public static BeanManager lookupBeanManager(ServletContext servletContext) {
033                BeanManager manager = (BeanManager)servletContext.getAttribute(BeanManager.class.getName());
034                if (manager != null)
035                        return manager;         
036                manager = (BeanManager)servletContext.getAttribute("org.jboss.weld.environment.servlet.javax.enterprise.inject.spi.BeanManager");
037                if (manager != null)
038                        return manager;
039                
040                InitialContext ic = null;
041            try {
042                        ic = new InitialContext();
043                // Standard JNDI binding
044                return (BeanManager)ic.lookup("java:comp/BeanManager");
045            }
046            catch (NameNotFoundException e) {
047                if (ic == null)
048                        throw new RuntimeException("No InitialContext");
049                
050                // Weld/Tomcat
051                try {
052                        return (BeanManager)ic.lookup("java:comp/env/BeanManager"); 
053                }
054                catch (Exception e1) {          
055                        // JBoss 5/6 (maybe obsolete in Weld 1.0+)
056                        try {
057                                return (BeanManager)ic.lookup("java:app/BeanManager");
058                        }
059                    catch (Exception e2) {
060                        throw new RuntimeException("Could not find Bean Manager", e2);
061                    }
062                }
063            }
064            catch (Exception e) {
065                throw new RuntimeException("Could not find Bean Manager", e);
066            }
067    }
068}