/*

  * Copyright 2007-2008 The Kuali Foundation

  *

  * Licensed under the Educational Community License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  *

  * http://www.opensource.org/licenses/ecl2.php

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.kuali.rice.core.jpa.spring;

 import javax.persistence.EntityManagerFactory;

 import javax.sql.DataSource;

 import org.kuali.rice.core.util.OrmUtils;

 import org.springframework.beans.factory.FactoryBean;

 import org.springframework.beans.factory.InitializingBean;

 /**

  * @author Kuali Rice Team (rice.collab@kuali.org)

  */

 public class RiceEntityManagerProxyFactoryBean implements FactoryBean, InitializingBean {

         private RiceLocalContainerEntityManagerFactoryBean factoryBean;

         private String prefix;

         private DataSource datasource;

         public RiceEntityManagerProxyFactoryBean(String prefix, DataSource datasource) {

                 this.prefix = prefix;

                 this.datasource = datasource;

         }        

         public void afterPropertiesSet() throws Exception {

                 if (OrmUtils.isJpaEnabled(prefix)) {

                         factoryBean = new RiceLocalContainerEntityManagerFactoryBean(prefix, datasource);

                         factoryBean.afterPropertiesSet();

                 }

         }

         public Class getObjectType() {

                 return (factoryBean != null ? factoryBean.getObjectType() : EntityManagerFactory.class);

         }

         public Object getObject() throws Exception {

                 return (factoryBean != null ? factoryBean.getObject() : new NullEntityManagerFactory());

         }

         public boolean isSingleton() {

                 return true;

         }

 }