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  /*
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
   *
   * Copyright (c) 2010-2011 Oracle and/or its affiliates. All rights reserved.
   *
   * The contents of this file are subject to the terms of either the GNU
   * General Public License Version 2 only ("GPL") or the Common Development
   * and Distribution License("CDDL") (collectively, the "License").  You
   * may not use this file except in compliance with the License.  You can
  * obtain a copy of the License at
  * http://glassfish.java.net/public/CDDL+GPL_1_1.html
  * or packager/legal/LICENSE.txt.  See the License for the specific
  * language governing permissions and limitations under the License.
  *
  * When distributing the software, include this License Header Notice in each
  * file and include the License file at packager/legal/LICENSE.txt.
  *
  * GPL Classpath Exception:
  * Oracle designates this particular file as subject to the "Classpath"
  * exception as provided by Oracle in the GPL Version 2 section of the License
  * file that accompanied this code.
  *
  * Modifications:
  * If applicable, add the following below the License Header, with the fields
  * enclosed by brackets [] replaced by your own identifying information:
  * "Portions Copyright [year] [name of copyright owner]"
  *
  * Contributor(s):
  * If you wish your version of this file to be governed by only the CDDL or
  * only the GPL Version 2, indicate your decision by adding "[Contributor]
  * elects to include this software in this distribution under the [CDDL or GPL
  * Version 2] license."  If you don't indicate a single choice of license, a
  * recipient has the option to distribute your version of this file under
  * either the CDDL, the GPL Version 2 or to extend the choice of license to
  * its licensees as provided above.  However, if you add GPL Version 2 code
  * and therefore, elected the GPL Version 2 license, then the option applies
  * only if the new code is made subject to such option by the copyright
  * holder.
  */
 
 package com.sun.jersey.server.impl.container.servlet;
 
 import java.util.Map;
 import  javax.persistence.EntityManagerFactory;
 import  javax.persistence.PersistenceUnit;
A servlet container for deploying root resource classes with support for injecting persistence units.

Persistence units that may be injected must be configured in web.xml in the normal way plus an additional servlet parameter to enable the Jersey servlet to locate them in JNDI. E.g. with the following persistence unit configuration: <persistence-unit-ref> <persistence-unit-ref-name>persistence/widget</persistence-unit-ref-name> <persistence-unit-name>WidgetPU</persistence-unit-name> </persistence-unit-ref> the Jersey servlet requires an additional servlet parameter as follows: <init-param> <param-name>unit:WidgetPU</param-name> <param-value>persistence/widget</param-value> </init-param> Given the above, Jersey will inject the EntityManagerFactory found at java:comp/env/persistence/widget in JNDI when encountering a field or parameter annotated with

PersistenceUnit:
unitName="WidgetPU").
 
 public class ServletAdaptor extends ServletContainer {
     private Map<StringStringpersistenceUnits =
             new HashMap<StringString>();
         
     @Override
     protected void configure(ServletConfig servletConfigResourceConfig rcWebApplication wa) {
         super.configure(servletConfigrcwa);

        
Look for persistent units.
 
         for (Enumeration e = servletConfig.getInitParameterNames() ; e.hasMoreElements() ;) {
             String key = (String)e.nextElement();
            String value = servletConfig.getInitParameter(key);
            if (key.startsWith("unit:")) {
                .put(key.substring(5),"java:comp/env/"+value);
            }
        }
        
        rc.getSingletons().add(new InjectableProvider<PersistenceUnit, Type>() {
            @Override
            public ComponentScope getScope() {
                return .;
            }
            
            @Override
            public Injectable<EntityManagerFactory> getInjectable(ComponentContext ic, PersistenceUnit puType c) {
                if (!c.equals(EntityManagerFactory.class))
                    return null;
                
                // TODO localize error message
                if (!.containsKey(pu.unitName()))
                    throw new ContainerException("Persistence unit '"+
                            pu.unitName()+
                            "' is not configured as a servlet parameter in web.xml");
                String jndiName = .get(pu.unitName());
                ThreadLocalNamedInvoker<EntityManagerFactory> emfHandler =
                        new ThreadLocalNamedInvoker<EntityManagerFactory>(jndiName);
                final EntityManagerFactory emf = (EntityManagerFactory) Proxy.newProxyInstance(
                        this.getClass().getClassLoader(),
                        new Class[] { EntityManagerFactory.class },
                        emfHandler);
                
                return new Injectable<EntityManagerFactory>() {
                    @Override
                    public EntityManagerFactory getValue() {
                        return emf;
                    }                    
                };
            }
        });        
    }    
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