Source Code Cross Referenced for PersistenceServiceImpl.java in  » ERP-CRM-Financial » Kuali-Financial-System » org » kuali » core » service » impl » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » ERP CRM Financial » Kuali Financial System » org.kuali.core.service.impl 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 2005-2007 The Kuali Foundation.
003:         * 
004:         * Licensed under the Educational Community License, Version 1.0 (the "License");
005:         * you may not use this file except in compliance with the License.
006:         * You may obtain a copy of the License at
007:         * 
008:         * http://www.opensource.org/licenses/ecl1.php
009:         * 
010:         * Unless required by applicable law or agreed to in writing, software
011:         * distributed under the License is distributed on an "AS IS" BASIS,
012:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013:         * See the License for the specific language governing permissions and
014:         * limitations under the License.
015:         */
016:        package org.kuali.core.service.impl;
017:
018:        import java.beans.PropertyDescriptor;
019:        import java.io.IOException;
020:        import java.io.InputStream;
021:        import java.lang.reflect.InvocationTargetException;
022:        import java.util.HashMap;
023:        import java.util.HashSet;
024:        import java.util.Iterator;
025:        import java.util.List;
026:        import java.util.Map;
027:        import java.util.Set;
028:        import java.util.Vector;
029:
030:        import org.apache.commons.beanutils.PropertyUtils;
031:        import org.apache.commons.lang.StringUtils;
032:        import org.apache.log4j.Logger;
033:        import org.apache.ojb.broker.metadata.ClassDescriptor;
034:        import org.apache.ojb.broker.metadata.ConnectionRepository;
035:        import org.apache.ojb.broker.metadata.DescriptorRepository;
036:        import org.apache.ojb.broker.metadata.FieldDescriptor;
037:        import org.apache.ojb.broker.metadata.MetadataManager;
038:        import org.apache.ojb.broker.metadata.ObjectReferenceDescriptor;
039:        import org.apache.ojb.broker.metadata.fieldaccess.PersistentField;
040:        import org.kuali.core.bo.PersistableBusinessObject;
041:        import org.kuali.core.bo.user.UniversalUser;
042:        import org.kuali.core.dao.PersistenceDao;
043:        import org.kuali.core.exceptions.IntrospectionException;
044:        import org.kuali.core.exceptions.ObjectNotABusinessObjectRuntimeException;
045:        import org.kuali.core.exceptions.ReferenceAttributeDoesntExistException;
046:        import org.kuali.core.exceptions.ReferenceAttributeNotAnOjbReferenceException;
047:        import org.kuali.core.service.KualiModuleService;
048:        import org.kuali.core.service.PersistenceService;
049:        import org.kuali.core.util.ObjectUtils;
050:        import org.kuali.rice.exceptions.RiceRuntimeException;
051:        import org.springframework.core.io.DefaultResourceLoader;
052:        import org.springframework.transaction.annotation.Transactional;
053:
054:        import edu.iu.uis.eden.util.ClassLoaderUtils;
055:
056:        /**
057:         * This class is the service implementation for the Persistence structure.
058:         * OjbRepositoryExplorer provides functions for extracting information from the
059:         * OJB repository at runtime. This is the default implementation, that is
060:         * delivered with Kuali.
061:         */
062:        @Transactional
063:        public class PersistenceServiceImpl extends PersistenceServiceImplBase
064:                implements  PersistenceService {
065:            private static Logger LOG = Logger
066:                    .getLogger(PersistenceServiceImpl.class);
067:            private static final String CLASSPATH_RESOURCE_PREFIX = "classpath:";
068:            private KualiModuleService moduleService;
069:            private PersistenceDao persistenceDao;
070:
071:            /**
072:             * Sets the moduleService attribute value.
073:             * 
074:             * @param moduleService
075:             *            The moduleService to set.
076:             */
077:            public void setModuleService(KualiModuleService moduleService) {
078:                this .moduleService = moduleService;
079:            }
080:
081:            public void clearCache() {
082:                persistenceDao.clearCache();
083:            }
084:
085:            public Object resolveProxy(Object o) {
086:                return persistenceDao.resolveProxy(o);
087:            }
088:
089:            //	public void initialize() {
090:            //		String filePathBeingProcessed = null;
091:            //		try {
092:            //			DefaultResourceLoader resourceLoader = new DefaultResourceLoader(ClassLoaderUtils.getDefaultClassLoader());
093:            //			for (NamedOrderedListBean namedOrderedListBean : KNSServiceLocator.getNamedOrderedListBeans(Constants.DATABASE_REPOSITORY_FILES_LIST_NAME)) {
094:            //				for (String databaseRepositoryFilePath : namedOrderedListBean.getList()) {
095:            //					filePathBeingProcessed = databaseRepositoryFilePath;
096:            //					if (!StringUtils.isBlank(filePathBeingProcessed))
097:            //						loadRepositoryDescriptor(resourceLoader, filePathBeingProcessed);
098:            //				}
099:            //			}
100:            //			for (KualiModule module : moduleService.getInstalledModules()) {
101:            //				for (String databaseRepositoryFilePath : module.getDatabaseRepositoryFilePaths()) {
102:            //					filePathBeingProcessed = databaseRepositoryFilePath;
103:            //					if (!StringUtils.isBlank(filePathBeingProcessed))
104:            //						loadRepositoryDescriptor(resourceLoader, filePathBeingProcessed);
105:            //				}
106:            //			}
107:            //		} catch (IOException e) {
108:            //			throw new RuntimeException("PersistenceServiceImpl encountered exception while trying to process file " + filePathBeingProcessed, e);
109:            //		}
110:            //	}
111:
112:            public void loadRepositoryDescriptor(String ojbRepositoryFilePath) {
113:                LOG.info("Begin loading OJB Metadata for: "
114:                        + ojbRepositoryFilePath);
115:                DefaultResourceLoader resourceLoader = new DefaultResourceLoader(
116:                        ClassLoaderUtils.getDefaultClassLoader());
117:                InputStream is = null;
118:                try {
119:                    is = resourceLoader.getResource(
120:                            CLASSPATH_RESOURCE_PREFIX + ojbRepositoryFilePath)
121:                            .getInputStream();
122:                    ConnectionRepository cr = MetadataManager.getInstance()
123:                            .readConnectionRepository(is);
124:                    MetadataManager.getInstance().mergeConnectionRepository(cr);
125:
126:                    is = resourceLoader.getResource(
127:                            CLASSPATH_RESOURCE_PREFIX + ojbRepositoryFilePath)
128:                            .getInputStream();
129:                    DescriptorRepository dr = MetadataManager.getInstance()
130:                            .readDescriptorRepository(is);
131:                    MetadataManager.getInstance().mergeDescriptorRepository(dr);
132:
133:                    if (LOG.isDebugEnabled()) {
134:                        LOG
135:                                .debug("--------------------------------------------------------------------------");
136:                        LOG.debug("Merging repository descriptor: "
137:                                + ojbRepositoryFilePath);
138:                        LOG
139:                                .debug("--------------------------------------------------------------------------");
140:                    }
141:                } catch (IOException ioe) {
142:                    if (is != null) {
143:                        try {
144:                            is.close();
145:                        } catch (IOException e) {
146:                            LOG.info(
147:                                    "Failed to close InputStream on OJB repository path "
148:                                            + ojbRepositoryFilePath, e);
149:                        }
150:                    }
151:                    throw new RiceRuntimeException(ioe);
152:                } finally {
153:                    if (is != null) {
154:                        try {
155:                            is.close();
156:                        } catch (IOException e) {
157:                            LOG.info(
158:                                    "Failed to close InputStream on OJB repository path "
159:                                            + ojbRepositoryFilePath, e);
160:                        }
161:                    }
162:                }
163:                LOG.info("Finished loading OJB Metadata for: "
164:                        + ojbRepositoryFilePath);
165:            }
166:
167:            /**
168:             * @see org.kuali.core.service.PersistenceService#retrieveNonKeyFields(java.lang.Object)
169:             */
170:            public void retrieveNonKeyFields(Object persistableObject) {
171:                if (persistableObject == null) {
172:                    throw new IllegalArgumentException(
173:                            "invalid (null) persistableObject");
174:                }
175:                LOG.debug("retrieving non-key fields for " + persistableObject);
176:
177:                persistenceDao.retrieveAllReferences(persistableObject);
178:            }
179:
180:            /**
181:             * @see org.kuali.core.service.PersistenceService#retrieveReferenceObject(java.lang.Object,
182:             *      String referenceObjectName)
183:             */
184:            public void retrieveReferenceObject(Object persistableObject,
185:                    String referenceObjectName) {
186:                if (persistableObject == null) {
187:                    throw new IllegalArgumentException(
188:                            "invalid (null) persistableObject");
189:                }
190:                LOG.debug("retrieving reference object " + referenceObjectName
191:                        + " for " + persistableObject);
192:
193:                persistenceDao.retrieveReference(persistableObject,
194:                        referenceObjectName);
195:            }
196:
197:            /**
198:             * @see org.kuali.core.service.PersistenceService#retrieveReferenceObject(java.lang.Object,
199:             *      String referenceObjectName)
200:             */
201:            public void retrieveReferenceObjects(Object persistableObject,
202:                    List referenceObjectNames) {
203:                if (persistableObject == null) {
204:                    throw new IllegalArgumentException(
205:                            "invalid (null) persistableObject");
206:                }
207:                if (referenceObjectNames == null) {
208:                    throw new IllegalArgumentException(
209:                            "invalid (null) referenceObjectNames");
210:                }
211:                if (referenceObjectNames.isEmpty()) {
212:                    throw new IllegalArgumentException(
213:                            "invalid (empty) referenceObjectNames");
214:                }
215:
216:                int index = 0;
217:                for (Iterator i = referenceObjectNames.iterator(); i.hasNext(); index++) {
218:                    String referenceObjectName = (String) i.next();
219:                    if (StringUtils.isBlank(referenceObjectName)) {
220:                        throw new IllegalArgumentException(
221:                                "invalid (blank) name at position " + index);
222:                    }
223:
224:                    retrieveReferenceObject(persistableObject,
225:                            referenceObjectName);
226:                }
227:            }
228:
229:            /**
230:             * @see org.kuali.core.service.PersistenceService#retrieveReferenceObject(java.lang.Object,
231:             *      String referenceObjectName)
232:             */
233:            public void retrieveReferenceObjects(List persistableObjects,
234:                    List referenceObjectNames) {
235:                if (persistableObjects == null) {
236:                    throw new IllegalArgumentException(
237:                            "invalid (null) persistableObjects");
238:                }
239:                if (persistableObjects.isEmpty()) {
240:                    throw new IllegalArgumentException(
241:                            "invalid (empty) persistableObjects");
242:                }
243:                if (referenceObjectNames == null) {
244:                    throw new IllegalArgumentException(
245:                            "invalid (null) referenceObjectNames");
246:                }
247:                if (referenceObjectNames.isEmpty()) {
248:                    throw new IllegalArgumentException(
249:                            "invalid (empty) referenceObjectNames");
250:                }
251:
252:                for (Iterator i = persistableObjects.iterator(); i.hasNext();) {
253:                    Object persistableObject = i.next();
254:                    retrieveReferenceObjects(persistableObject,
255:                            referenceObjectNames);
256:                }
257:            }
258:
259:            /**
260:             * @see org.kuali.core.service.PersistenceService#getFlattenedPrimaryKeyFieldValues(java.lang.Object)
261:             */
262:            public String getFlattenedPrimaryKeyFieldValues(
263:                    Object persistableObject) {
264:                if (persistableObject == null) {
265:                    throw new IllegalArgumentException(
266:                            "invalid (null) persistableObject");
267:                }
268:                Map primaryKeyValues = getPrimaryKeyFieldValues(
269:                        persistableObject, true);
270:
271:                StringBuffer flattened = new StringBuffer(persistableObject
272:                        .getClass().getName());
273:                flattened.append("(");
274:                for (Iterator i = primaryKeyValues.entrySet().iterator(); i
275:                        .hasNext();) {
276:                    Map.Entry e = (Map.Entry) i.next();
277:
278:                    String fieldName = (String) e.getKey();
279:                    Object fieldValue = e.getValue();
280:
281:                    flattened.append(fieldName + "=" + fieldValue);
282:                    if (i.hasNext()) {
283:                        flattened.append(",");
284:                    }
285:                }
286:
287:                flattened.append(")");
288:
289:                return flattened.toString();
290:
291:            }
292:
293:            private void linkObjectsWithCircularReferenceCheck(
294:                    Object persistableObject, Set referenceSet) {
295:                if (ObjectUtils.isNull(persistableObject)
296:                        || referenceSet.contains(persistableObject)) {
297:                    return;
298:                }
299:                referenceSet.add(persistableObject);
300:                ClassDescriptor classDescriptor = getClassDescriptor(persistableObject
301:                        .getClass());
302:
303:                String className = null;
304:                String fieldName = null;
305:                try {
306:                    // iterate through all object references for the persistableObject
307:                    Vector objectReferences = classDescriptor
308:                            .getObjectReferenceDescriptors();
309:                    for (Iterator iter = objectReferences.iterator(); iter
310:                            .hasNext();) {
311:                        ObjectReferenceDescriptor referenceDescriptor = (ObjectReferenceDescriptor) iter
312:                                .next();
313:
314:                        // get the actual reference object
315:                        className = persistableObject.getClass().getName();
316:                        fieldName = referenceDescriptor.getAttributeName();
317:                        Object referenceObject = PropertyUtils.getProperty(
318:                                persistableObject, fieldName);
319:                        if (ObjectUtils.isNull(referenceObject)
320:                                || referenceSet.contains(referenceObject)) {
321:                            continue;
322:                        }
323:
324:                        // recursively link object
325:                        linkObjectsWithCircularReferenceCheck(referenceObject,
326:                                referenceSet);
327:
328:                        // iterate through the keys for the reference object and set
329:                        // value
330:                        FieldDescriptor[] refFkNames = referenceDescriptor
331:                                .getForeignKeyFieldDescriptors(classDescriptor);
332:                        ClassDescriptor refCld = getClassDescriptor(referenceDescriptor
333:                                .getItemClass());
334:                        FieldDescriptor[] refPkNames = refCld.getPkFields();
335:
336:                        Map objFkValues = new HashMap();
337:                        for (int i = 0; i < refPkNames.length; i++) {
338:                            objFkValues.put(refFkNames[i].getAttributeName(),
339:                                    ObjectUtils.getPropertyValue(
340:                                            referenceObject, refPkNames[i]
341:                                                    .getAttributeName()));
342:                        }
343:
344:                        for (int i = 0; i < refFkNames.length; i++) {
345:                            FieldDescriptor fkField = refFkNames[i];
346:                            String fkName = fkField.getAttributeName();
347:
348:                            // if the fk from object and use if main object does not
349:                            // have value
350:                            Object fkValue = null;
351:                            if (objFkValues.containsKey(fkName)) {
352:                                fkValue = objFkValues.get(fkName);
353:                            }
354:
355:                            // if fk is set in main object, take value from there
356:                            Object mainFkValue = ObjectUtils.getPropertyValue(
357:                                    persistableObject, fkName);
358:                            if (ObjectUtils.isNotNull(mainFkValue)
359:                                    && StringUtils.isNotBlank(mainFkValue
360:                                            .toString())) {
361:                                fkValue = mainFkValue;
362:                            } else if (ObjectUtils.isNull(fkValue)
363:                                    || StringUtils.isBlank(fkValue.toString())) {
364:                                // find the value from one of the other reference
365:                                // objects
366:                                for (Iterator iter2 = objectReferences
367:                                        .iterator(); iter2.hasNext();) {
368:                                    ObjectReferenceDescriptor checkDescriptor = (ObjectReferenceDescriptor) iter2
369:                                            .next();
370:
371:                                    fkValue = getReferenceFKValue(
372:                                            persistableObject, checkDescriptor,
373:                                            fkName);
374:                                    if (ObjectUtils.isNotNull(fkValue)
375:                                            && StringUtils.isNotBlank(fkValue
376:                                                    .toString())) {
377:                                        break;
378:                                    }
379:                                }
380:                            }
381:
382:                            // set the fk value
383:                            if (ObjectUtils.isNotNull(fkValue)) {
384:                                fieldName = refPkNames[i].getAttributeName();
385:                                ObjectUtils.setObjectProperty(referenceObject,
386:                                        fieldName, fkValue.getClass(), fkValue);
387:
388:                                // set fk in main object
389:                                if (ObjectUtils.isNull(mainFkValue)) {
390:                                    ObjectUtils.setObjectProperty(
391:                                            persistableObject, fkName, fkValue
392:                                                    .getClass(), fkValue);
393:                                }
394:                            }
395:                        }
396:                    }
397:                } catch (NoSuchMethodException e) {
398:                    throw new IntrospectionException("no setter for property '"
399:                            + className + "." + fieldName + "'", e);
400:                } catch (IllegalAccessException e) {
401:                    throw new IntrospectionException(
402:                            "problem accessing property '" + className + "."
403:                                    + fieldName + "'", e);
404:                } catch (InvocationTargetException e) {
405:                    throw new IntrospectionException(
406:                            "problem invoking getter for property '"
407:                                    + className + "." + fieldName + "'", e);
408:                }
409:            }
410:
411:            /**
412:             * For each reference object to the parent persistableObject, sets the key
413:             * values for that object. First, if the reference object already has a
414:             * value for the key, the value is left unchanged. Otherwise, for
415:             * non-anonymous keys, the value is taken from the parent object. For
416:             * anonymous keys, all other persistableObjects are checked until a value
417:             * for the key is found.
418:             * 
419:             * @see org.kuali.core.service.PersistenceService#getReferencedObject(java.lang.Object,
420:             *      org.apache.ojb.broker.metadata.ObjectReferenceDescriptor)
421:             */
422:            public void linkObjects(Object persistableObject) {
423:                linkObjectsWithCircularReferenceCheck(persistableObject,
424:                        new HashSet());
425:            }
426:
427:            /**
428:             * 
429:             * @see org.kuali.core.service.PersistenceService#allForeignKeyValuesPopulatedForReference(org.kuali.core.bo.BusinessObject,
430:             *      java.lang.String)
431:             */
432:            public boolean allForeignKeyValuesPopulatedForReference(
433:                    PersistableBusinessObject bo, String referenceName) {
434:
435:                boolean allFkeysHaveValues = true;
436:
437:                // yelp if nulls were passed in
438:                if (bo == null) {
439:                    throw new IllegalArgumentException(
440:                            "The Class passed in for the BusinessObject argument was null.");
441:                }
442:                if (StringUtils.isBlank(referenceName)) {
443:                    throw new IllegalArgumentException(
444:                            "The String passed in for the referenceName argument was null or empty.");
445:                }
446:
447:                PropertyDescriptor propertyDescriptor = null;
448:
449:                // make sure the attribute exists at all, throw exception if not
450:                try {
451:                    propertyDescriptor = PropertyUtils.getPropertyDescriptor(
452:                            bo, referenceName);
453:                } catch (Exception e) {
454:                    throw new RuntimeException(e);
455:                }
456:                if (propertyDescriptor == null) {
457:                    throw new ReferenceAttributeDoesntExistException(
458:                            "Requested attribute: '" + referenceName
459:                                    + "' does not exist " + "on class: '"
460:                                    + bo.getClass().getName() + "'.");
461:                }
462:
463:                // get the class of the attribute name
464:                Class referenceClass = getBusinessObjectAttributeClass(bo
465:                        .getClass(), referenceName);
466:                if (referenceClass == null) {
467:                    referenceClass = propertyDescriptor.getPropertyType();
468:                }
469:
470:                // make sure the class of the attribute descends from BusinessObject,
471:                // otherwise throw an exception
472:                if (!PersistableBusinessObject.class
473:                        .isAssignableFrom(referenceClass)) {
474:                    throw new ObjectNotABusinessObjectRuntimeException(
475:                            "Attribute requested ("
476:                                    + referenceName
477:                                    + ") is of class: "
478:                                    + "'"
479:                                    + referenceClass.getName()
480:                                    + "' and is not a "
481:                                    + "descendent of BusinessObject.  Only descendents of BusinessObject "
482:                                    + "can be used.");
483:                }
484:
485:                // make sure the attribute designated is listed as a
486:                // reference-descriptor
487:                // on the clazz specified, otherwise throw an exception (OJB);
488:                // UniversalUser objects
489:                // will be excluded from this
490:                ClassDescriptor classDescriptor = getClassDescriptor(bo
491:                        .getClass());
492:                if (!UniversalUser.class.equals(referenceClass)) {
493:                    ObjectReferenceDescriptor referenceDescriptor = classDescriptor
494:                            .getObjectReferenceDescriptorByName(referenceName);
495:                    if (referenceDescriptor == null) {
496:                        throw new ReferenceAttributeNotAnOjbReferenceException(
497:                                "Attribute requested ("
498:                                        + referenceName
499:                                        + ") is not listed "
500:                                        + "in OJB as a reference-descriptor for class: '"
501:                                        + bo.getClass().getName() + "'");
502:                    }
503:
504:                    // get the list of the foreign-keys for this reference-descriptor
505:                    // (OJB)
506:                    Vector fkFields = referenceDescriptor.getForeignKeyFields();
507:                    Iterator fkIterator = fkFields.iterator();
508:
509:                    // walk through the list of the foreign keys, get their types
510:                    while (fkIterator.hasNext()) {
511:
512:                        // get the field name of the fk & pk field
513:                        String fkFieldName = (String) fkIterator.next();
514:
515:                        // get the value for the fk field
516:                        Object fkFieldValue = null;
517:                        try {
518:                            fkFieldValue = PropertyUtils.getSimpleProperty(bo,
519:                                    fkFieldName);
520:                        }
521:
522:                        // if we cant retrieve the field value, then
523:                        // it doesnt have a value
524:                        catch (IllegalAccessException e) {
525:                            return false;
526:                        } catch (InvocationTargetException e) {
527:                            return false;
528:                        } catch (NoSuchMethodException e) {
529:                            return false;
530:                        }
531:
532:                        // test the value
533:                        if (fkFieldValue == null) {
534:                            return false;
535:                        } else if (String.class.isAssignableFrom(fkFieldValue
536:                                .getClass())) {
537:                            if (StringUtils.isBlank((String) fkFieldValue)) {
538:                                return false;
539:                            }
540:                        }
541:                    }
542:                }
543:
544:                return allFkeysHaveValues;
545:            }
546:
547:            /**
548:             * 
549:             * @see org.kuali.core.service.PersistenceService#refreshAllNonUpdatingReferences(org.kuali.core.bo.BusinessObject)
550:             */
551:            public void refreshAllNonUpdatingReferences(
552:                    PersistableBusinessObject bo) {
553:
554:                // get the OJB class-descriptor for the bo class
555:                ClassDescriptor classDescriptor = getClassDescriptor(bo
556:                        .getClass());
557:
558:                // get a list of all reference-descriptors for that class
559:                Vector references = classDescriptor
560:                        .getObjectReferenceDescriptors();
561:
562:                // walk through all of the reference-descriptors
563:                for (Iterator iter = references.iterator(); iter.hasNext();) {
564:                    ObjectReferenceDescriptor reference = (ObjectReferenceDescriptor) iter
565:                            .next();
566:
567:                    // if its NOT an updateable reference, then lets refresh it
568:                    if (reference.getCascadingStore() == ObjectReferenceDescriptor.CASCADE_NONE) {
569:                        PersistentField persistentField = reference
570:                                .getPersistentField();
571:                        String referenceName = persistentField.getName();
572:                        retrieveReferenceObject(bo, referenceName);
573:                    }
574:                }
575:            }
576:
577:            /**
578:             * Sets the persistenceDao attribute value.
579:             * 
580:             * @param persistenceDao
581:             *            The persistenceDao to set.
582:             */
583:            public void setPersistenceDao(PersistenceDao persistenceDao) {
584:                this.persistenceDao = persistenceDao;
585:            }
586:        }
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