/*

  * 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.krad.app.persistence.jpa;

 import org.springframework.orm.jpa.persistenceunit.MutablePersistenceUnitInfo;

 import org.springframework.orm.jpa.persistenceunit.PersistenceUnitPostProcessor;

 import javax.sql.DataSource;

 public class RicePersistenceUnitPostProcessor implements PersistenceUnitPostProcessor {

         static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(RicePersistenceUnitPostProcessor.class);

         public static final String KNS_APPLICATION_PERSISTENCE_UNIT_NAME = "kns-application-unit";

         public static final String KNS_SERVER_PERSISTENCE_UNIT_NAME = "kns-server-unit";

         private DataSource jtaDataSource;

     public void postProcessPersistenceUnitInfo(MutablePersistenceUnitInfo mutablePersistenceUnitInfo) {

         mutablePersistenceUnitInfo.setJtaDataSource(getJtaDataSource());

         addKNSManagedClassNames(mutablePersistenceUnitInfo);

         if (mutablePersistenceUnitInfo.getPersistenceUnitName().equals(KNS_APPLICATION_PERSISTENCE_UNIT_NAME) || mutablePersistenceUnitInfo.getPersistenceUnitName().equals(KNS_SERVER_PERSISTENCE_UNIT_NAME)) {

                 addRiceManagedClassNamesToKNSPersistenceUnit(mutablePersistenceUnitInfo);

         }

     }

     /**

      * 

      * Adds all the KNS Managed entities to the persistence unit - which is important, becuase all

      * persistence units get the KNS entities to manage

      * 

      * @param mutablePersistenceUnitInfo

      */

     public void addKNSManagedClassNames(MutablePersistenceUnitInfo mutablePersistenceUnitInfo) {

             addManagedClassNames(mutablePersistenceUnitInfo, new KNSPersistableBusinessObjectClassExposer());

     }

     /**

      * Adds the class names listed by exposed by the given exposer into the persistence unit

      * 

      * @param mutablePersistenceUnitInfo the persistence unit to add managed JPA entity class names to

      * @param exposer the exposer for class names to manage

      */

     public void addManagedClassNames(MutablePersistenceUnitInfo mutablePersistenceUnitInfo, PersistableBusinessObjectClassExposer exposer) {

             for (String exposedClassName : exposer.exposePersistableBusinessObjectClassNames()) {

                     if (LOG.isDebugEnabled()) {

                             LOG.debug("JPA will now be managing class: "+exposedClassName);

                     }

                     mutablePersistenceUnitInfo.addManagedClassName(exposedClassName);

             }

     }

     public void addRiceManagedClassNamesToKNSPersistenceUnit(MutablePersistenceUnitInfo mutablePersistenceUnitInfo) {

             addManagedClassNames(mutablePersistenceUnitInfo, new RiceToNervousSystemBusinessObjectClassExposer());

     }

     public DataSource getJtaDataSource() {

         return jtaDataSource;

     }

     public void setJtaDataSource(DataSource jtaDataSource) {

         this.jtaDataSource = jtaDataSource;

     }

 }