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1   /**
2    * Copyright 2005-2012 The Kuali Foundation
3    *
4    * Licensed under the Educational Community License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    * http://www.opensource.org/licenses/ecl2.php
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.kuali.rice.krad.dao.proxy;
17  
18  import org.apache.commons.lang.StringUtils;
19  import org.kuali.rice.core.api.config.ConfigurationException;
20  import org.kuali.rice.core.framework.persistence.jpa.OrmUtils;
21  import org.kuali.rice.krad.bo.BusinessObject;
22  import org.kuali.rice.krad.bo.ModuleConfiguration;
23  import org.kuali.rice.krad.bo.PersistableBusinessObject;
24  import org.kuali.rice.krad.dao.BusinessObjectDao;
25  import org.kuali.rice.krad.dao.impl.BusinessObjectDaoJpa;
26  import org.kuali.rice.krad.dao.impl.BusinessObjectDaoOjb;
27  import org.kuali.rice.krad.service.KRADServiceLocator;
28  import org.kuali.rice.krad.service.KRADServiceLocatorWeb;
29  import org.kuali.rice.krad.service.KualiModuleService;
30  import org.kuali.rice.krad.service.ModuleService;
31  import org.springframework.transaction.annotation.Transactional;
32  
33  import javax.persistence.EntityManager;
34  import java.util.ArrayList;
35  import java.util.Collection;
36  import java.util.HashMap;
37  import java.util.List;
38  import java.util.Map;
39  
40  @Transactional
41  public class BusinessObjectDaoProxy implements BusinessObjectDao {
42  
43  	private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(BusinessObjectDaoProxy.class);
44  
45  	private BusinessObjectDao businessObjectDaoJpa;
46  	private BusinessObjectDao businessObjectDaoOjb;
47      private static KualiModuleService kualiModuleService;
48      private static HashMap<String, BusinessObjectDao> boDaoValues = new HashMap<String, BusinessObjectDao>();
49  
50      private BusinessObjectDao getDao(Class clazz) {
51          ModuleService moduleService = getKualiModuleService().getResponsibleModuleService(clazz);
52          if (moduleService != null) {
53              ModuleConfiguration moduleConfig = moduleService.getModuleConfiguration();
54              String dataSourceName = "";
55              EntityManager entityManager = null;
56              if (moduleConfig != null) {
57                  dataSourceName = moduleConfig.getDataSourceName();
58                  entityManager = moduleConfig.getEntityManager();
59              }
60  
61              if (StringUtils.isNotEmpty(dataSourceName)) {
62                  if (boDaoValues.get(dataSourceName) != null) {
63                      return boDaoValues.get(dataSourceName);
64                  } else {
65                  	if (OrmUtils.isJpaAnnotated(clazz) && OrmUtils.isJpaEnabled()) {
66                          //using JPA
67                  		if (entityManager != null) {
68                              BusinessObjectDaoJpa boDaoJpa =
69                              	new BusinessObjectDaoJpa(entityManager, KRADServiceLocator
70                                          .getPersistenceStructureService());
71                              // add to our cache of bo daos
72                  			boDaoValues.put(dataSourceName, boDaoJpa);
73                  			return boDaoJpa;
74                  		} else {
75                  			throw new ConfigurationException("EntityManager is null. EntityManager must be set in the Module Configuration bean in the appropriate spring beans xml. (see nested exception for details).");
76                  		}
77                  	} else {	
78                  	    //using OJB
79                          BusinessObjectDaoOjb boDaoOjb = new BusinessObjectDaoOjb(
80                                  KRADServiceLocator.getPersistenceStructureService());
81                          boDaoOjb.setJcdAlias(dataSourceName);
82                          // add to our cache of bo daos
83                          boDaoValues.put(dataSourceName, boDaoOjb);
84                          return boDaoOjb;
85                      }    
86                  }
87  
88              }
89          }
90          //return businessObjectDaoJpa;
91          return (OrmUtils.isJpaAnnotated(clazz) && OrmUtils.isJpaEnabled()) ? businessObjectDaoJpa : businessObjectDaoOjb;
92      }
93  
94  	/**
95  	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#countMatching(java.lang.Class, java.util.Map)
96  	 */
97  	public int countMatching(Class clazz, Map<String, ?> fieldValues) {
98  		return getDao(clazz).countMatching(clazz, fieldValues);
99  	}
100 
101 	/**
102 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#countMatching(java.lang.Class, java.util.Map, java.util.Map)
103 	 */
104 	public int countMatching(Class clazz, Map<String, ?> positiveFieldValues, Map<String, ?> negativeFieldValues) {
105 		return getDao(clazz).countMatching(clazz, positiveFieldValues, negativeFieldValues);
106 	}
107 
108 	/**
109 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#delete(org.kuali.rice.krad.bo.PersistableBusinessObject)
110 	 */
111 	public void delete(PersistableBusinessObject bo) {
112 		if (bo != null) {
113 			getDao(bo.getClass()).delete(bo);
114 		}
115 	}
116 
117 	/**
118 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#delete(java.util.List)
119 	 */
120 	public void delete(List<? extends PersistableBusinessObject> boList) {
121 		if (!boList.isEmpty()) {
122 			getDao(boList.get(0).getClass()).delete(boList);
123 		}
124 	}
125 
126 	/**
127 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#deleteMatching(java.lang.Class, java.util.Map)
128 	 */
129 	public void deleteMatching(Class clazz, Map<String, ?> fieldValues) {
130 		getDao(clazz).deleteMatching(clazz, fieldValues);
131 	}
132 
133 	/**
134 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#findAll(java.lang.Class)
135 	 */
136 	public <T extends BusinessObject> Collection<T> findAll(Class<T> clazz) {
137 		return getDao(clazz).findAll(clazz);
138 	}
139 
140 	/**
141 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#findAllActive(java.lang.Class)
142 	 */
143 	public <T extends BusinessObject> Collection<T> findAllActive(Class<T> clazz) {
144 		return getDao(clazz).findAllActive(clazz);
145 	}
146 
147 	/**
148 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#findAllInactive(java.lang.Class)
149 	 */
150 	public <T extends BusinessObject> Collection<T> findAllInactive(Class<T> clazz) {
151 		return getDao(clazz).findAllInactive(clazz);
152 	}
153 
154 	/**
155 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#findAllActiveOrderBy(java.lang.Class, java.lang.String, boolean)
156 	 */
157 	public <T extends BusinessObject> Collection<T> findAllActiveOrderBy(Class<T> clazz, String sortField, boolean sortAscending) {
158 		return getDao(clazz).findAllActiveOrderBy(clazz, sortField, sortAscending);
159 	}
160 
161 	/**
162 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#findAllOrderBy(java.lang.Class, java.lang.String, boolean)
163 	 */
164 	public <T extends BusinessObject> Collection<T> findAllOrderBy(Class<T> clazz, String sortField, boolean sortAscending) {
165 		return getDao(clazz).findAllOrderBy(clazz, sortField, sortAscending);
166 	}
167 
168 	/**
169 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#findBySinglePrimaryKey(java.lang.Class, java.lang.Object)
170 	 */
171 	public <T extends BusinessObject> T findBySinglePrimaryKey(Class<T> clazz, Object primaryKey) {
172 		return getDao(clazz).findBySinglePrimaryKey(clazz, primaryKey);
173 	}
174 	
175 	/**
176 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#findByPrimaryKey(java.lang.Class, java.util.Map)
177 	 */
178 	public <T extends BusinessObject> T findByPrimaryKey(Class<T> clazz, Map<String, ?> primaryKeys) {
179 		return getDao(clazz).findByPrimaryKey(clazz, primaryKeys);
180 	}
181 
182 	/**
183 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#findMatching(java.lang.Class, java.util.Map)
184 	 */
185 	public <T extends BusinessObject> Collection<T> findMatching(Class<T> clazz, Map<String, ?> fieldValues) {
186 		return getDao(clazz).findMatching(clazz, fieldValues);
187 	}
188 
189 	/**
190 	 * Has the proxied DAO handle the criteria
191 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#findMatching(org.kuali.rice.core.framework.persistence.jpa.criteria.Criteria)
192 	 */
193 	//public <T extends BusinessObject> Collection<T> findMatching(Criteria criteria) {
194 	//	Class clazz = null;
195 	//	try {
196 	//		clazz = Class.forName(criteria.getEntityName());
197 	//	} catch (ClassNotFoundException cnfe) {
198 	//		throw new RuntimeException("Attempted to run JPA Criteria which uses a non-existent class to query against: "+criteria.getEntityName(), cnfe);
199 	//	}
200 	//	return getDao(clazz).findMatching(criteria);
201 	//}
202 
203 	/**
204 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#findMatchingActive(java.lang.Class, java.util.Map)
205 	 */
206 	public <T extends BusinessObject> Collection<T> findMatchingActive(Class<T> clazz, Map<String, ?> fieldValues) {
207 		return getDao(clazz).findMatchingActive(clazz, fieldValues);
208 	}
209 
210 	/**
211 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#findMatchingOrderBy(java.lang.Class, java.util.Map, java.lang.String, boolean)
212 	 */
213 	public <T extends BusinessObject> Collection<T> findMatchingOrderBy(Class<T> clazz, Map<String, ?> fieldValues, String sortField, boolean sortAscending) {
214 		return getDao(clazz).findMatchingOrderBy(clazz, fieldValues, sortField, sortAscending);
215 	}
216 
217 	/**
218 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#retrieve(org.kuali.rice.krad.bo.PersistableBusinessObject)
219 	 */
220 	public PersistableBusinessObject retrieve(PersistableBusinessObject object) {
221 		return getDao(object.getClass()).retrieve(object);
222 	}
223 	
224 	/**
225 
226 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#manageReadOnly(org.kuali.rice.krad.bo.PersistableBusinessObject)
227 	 */
228 	public PersistableBusinessObject manageReadOnly(PersistableBusinessObject bo) {
229 		return getDao(bo.getClass()).manageReadOnly(bo);
230 	}
231 
232 	/**
233 	 * Defers to correct DAO for this class
234 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#findByPrimaryKeyUsingKeyObject(java.lang.Class, java.lang.Object)
235 	 */
236 	public <T extends BusinessObject> T findByPrimaryKeyUsingKeyObject(Class<T> clazz, Object pkObject) {
237 		return getDao(clazz).findByPrimaryKeyUsingKeyObject(clazz, pkObject);
238 	}
239 
240 	/**
241 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#save(org.kuali.rice.krad.bo.PersistableBusinessObject)
242 	 */
243 	public PersistableBusinessObject save(PersistableBusinessObject bo) {
244 		PersistableBusinessObject savedBo;
245 		savedBo = getDao(bo.getClass()).save(bo);
246 		return savedBo;
247 	}
248 
249 	/**
250 	 * @see org.kuali.rice.krad.dao.BusinessObjectDao#save(java.util.List)
251 	 */
252 	public List<? extends PersistableBusinessObject> save(List businessObjects) {
253 		if (!businessObjects.isEmpty()) {
254 			return getDao(businessObjects.get(0).getClass()).save(businessObjects);
255 		}
256 		return new ArrayList<PersistableBusinessObject>();
257 	}
258 
259     private static KualiModuleService getKualiModuleService() {
260         if (kualiModuleService == null) {
261             kualiModuleService = KRADServiceLocatorWeb.getKualiModuleService();
262         }
263         return kualiModuleService;
264     }
265 
266 	public void setBusinessObjectDaoJpa(BusinessObjectDao businessObjectDaoJpa) {
267 		this.businessObjectDaoJpa = businessObjectDaoJpa;
268 	}
269 
270 	public void setBusinessObjectDaoOjb(BusinessObjectDao businessObjectDaoOjb) {
271 		this.businessObjectDaoOjb = businessObjectDaoOjb;
272 	}
273 }