/*

  * Copyright 2006-2007 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.service.impl;

 import java.util.ArrayList;

 import java.util.Collection;

 import java.util.Collections;

 import java.util.Map;

 import org.kuali.rice.krad.bo.BusinessObject;

 import org.kuali.rice.krad.bo.ExternalizableBusinessObject;

 import org.kuali.rice.krad.dao.BusinessObjectDao;

 import org.kuali.rice.krad.service.*;

 import org.kuali.rice.krad.util.KRADPropertyConstants;

 import org.kuali.rice.krad.util.spring.CacheNoCopy;

 /**

  * This class provides collection retrievals to populate key value pairs of business objects.

  */

 @CacheNoCopy

 public class KeyValuesServiceImpl implements KeyValuesService {

     private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(KeyValuesServiceImpl.class);

     private BusinessObjectDao businessObjectDao;

     private PersistenceStructureService persistenceStructureService;

     /**

      * @see org.kuali.rice.krad.service.KeyValuesService#findAll(java.lang.Class)

      */

     @Override

         public <T extends BusinessObject> Collection<T> findAll(Class<T> clazz) {

             ModuleService responsibleModuleService = KRADServiceLocatorWeb.getKualiModuleService().getResponsibleModuleService(clazz);

                 if(responsibleModuleService!=null && responsibleModuleService.isExternalizable(clazz)){

                         return (Collection<T>) responsibleModuleService.getExternalizableBusinessObjectsList((Class<ExternalizableBusinessObject>) clazz, Collections.<String, Object>emptyMap());

                 }

         if (containsActiveIndicator(clazz)) {

             return businessObjectDao.findAllActive(clazz);

         }

         if (LOG.isDebugEnabled()) {

                         LOG.debug("Active indicator not found for class " + clazz.getName());

                 }

         return businessObjectDao.findAll(clazz);

     }

         public static <E> Collection<E> createUnmodifiableUpcastList(Collection<? extends E> list, Class<E> type) {

                 return new ArrayList<E>(list);

         }

     /**

      * @see org.kuali.rice.krad.service.KeyValuesService#findAllOrderBy(java.lang.Class, java.lang.String, boolean)

      */

     @Override

         public <T extends BusinessObject> Collection<T> findAllOrderBy(Class<T> clazz, String sortField, boolean sortAscending) {

         if (containsActiveIndicator(clazz)) {

             return businessObjectDao.findAllActiveOrderBy(clazz, sortField, sortAscending);

         }

         if (LOG.isDebugEnabled()) {

                         LOG.debug("Active indicator not found for class " + clazz.getName());

                 }

         return businessObjectDao.findAllOrderBy(clazz, sortField, sortAscending);

     }

     /**

      * @see org.kuali.rice.krad.service.BusinessObjectService#findMatching(java.lang.Class, java.util.Map)

      */

     @Override

         public <T extends BusinessObject> Collection<T> findMatching(Class<T> clazz, Map<String, Object> fieldValues) {

         if (containsActiveIndicator(clazz)) {

             return businessObjectDao.findMatchingActive(clazz, fieldValues);

         }

         if (LOG.isDebugEnabled()) {

                         LOG.debug("Active indicator not found for class " + clazz.getName());

                 }

         return businessObjectDao.findMatching(clazz, fieldValues);

     }

     /**

      * @return Returns the businessObjectDao.

      */

     public BusinessObjectDao getBusinessObjectDao() {

         return businessObjectDao;

     }

     /**

      * @param businessObjectDao The businessObjectDao to set.

      */

     public void setBusinessObjectDao(BusinessObjectDao businessObjectDao) {

         this.businessObjectDao = businessObjectDao;

     }

     /**

      * Gets the persistenceStructureService attribute.

      * 

      * @return Returns the persistenceStructureService.

      */

     public PersistenceStructureService getPersistenceStructureService() {

         return persistenceStructureService;

     }

     /**

      * Sets the persistenceStructureService attribute value.

      * 

      * @param persistenceStructureService The persistenceStructureService to set.

      */

     public void setPersistenceStructureService(PersistenceStructureService persistenceStructureService) {

         this.persistenceStructureService = persistenceStructureService;

     }

     /**

      * Uses persistence service to determine if the active column is mapped up in ojb.

      * 

      * @param clazz

      * @return boolean if active column is mapped for Class

      */

     private <T extends BusinessObject> boolean containsActiveIndicator(Class<T> clazz) {

         boolean containsActive = false;

         if (persistenceStructureService.listFieldNames(clazz).contains(KRADPropertyConstants.ACTIVE)) {

             containsActive = true;

         }

         return containsActive;

     }

     /**

      * @see org.kuali.rice.krad.service.KeyValuesService#findAll(java.lang.Class)

      */

     @Override

         public <T extends BusinessObject> Collection<T> findAllInactive(Class<T> clazz) {

             if (LOG.isDebugEnabled()) {

                         LOG.debug("Active indicator not found for class " + clazz.getName());

                 }

         return businessObjectDao.findAllInactive(clazz);

     }

 }