/*

  * Copyright 2005-2007 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.document;

 import org.apache.commons.lang.StringUtils;

 import org.apache.log4j.Logger;

 import org.kuali.rice.kew.api.KewApiServiceLocator;

 import org.kuali.rice.kew.dto.ActionTakenEventDTO;

 import org.kuali.rice.kew.dto.DocumentRouteLevelChangeDTO;

 import org.kuali.rice.kew.dto.DocumentRouteStatusChangeDTO;

 import org.kuali.rice.kew.exception.WorkflowException;

 import org.kuali.rice.kew.util.KEWConstants;

 import org.kuali.rice.kim.api.services.KimApiServiceLocator;

 import org.kuali.rice.kim.bo.Person;

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

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

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

 import org.kuali.rice.krad.bo.Note;

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

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

 import org.kuali.rice.krad.datadictionary.DocumentEntry;

 import org.kuali.rice.krad.datadictionary.WorkflowAttributes;

 import org.kuali.rice.krad.datadictionary.WorkflowProperties;

 import org.kuali.rice.krad.document.authorization.PessimisticLock;

 import org.kuali.rice.krad.exception.PessimisticLockingException;

 import org.kuali.rice.krad.exception.ValidationException;

 import org.kuali.rice.krad.rule.event.KualiDocumentEvent;

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

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

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

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

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

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

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

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

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

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

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

 import org.kuali.rice.krad.util.documentserializer.AlwaysFalsePropertySerializabilityEvaluator;

 import org.kuali.rice.krad.util.documentserializer.AlwaysTruePropertySerializibilityEvaluator;

 import org.kuali.rice.krad.util.documentserializer.BusinessObjectPropertySerializibilityEvaluator;

 import org.kuali.rice.krad.util.documentserializer.PropertySerializabilityEvaluator;

 import org.kuali.rice.krad.workflow.DocumentInitiator;

 import org.kuali.rice.krad.workflow.KualiDocumentXmlMaterializer;

 import org.kuali.rice.krad.workflow.KualiTransactionalDocumentInformation;

 import org.springframework.util.AutoPopulatingList;

 import javax.persistence.CascadeType;

 import javax.persistence.Column;

 import javax.persistence.FetchType;

 import javax.persistence.Id;

 import javax.persistence.JoinColumn;

 import javax.persistence.MappedSuperclass;

 import javax.persistence.OneToMany;

 import javax.persistence.OneToOne;

 import javax.persistence.Transient;

 import java.util.ArrayList;

 import java.util.Iterator;

 import java.util.List;

 import java.util.Map;

 /**

  * @see Document

  */

 @MappedSuperclass

 public abstract class DocumentBase extends PersistableBusinessObjectBase implements Document {

     private static final Logger LOG = Logger.getLogger(DocumentBase.class);

     @Id

     @Column(name="DOC_HDR_ID")

     protected String documentNumber;

     @OneToOne(fetch=FetchType.LAZY, cascade={CascadeType.PERSIST, CascadeType.MERGE})

         @JoinColumn(name="DOC_HDR_ID", insertable=false, updatable=false)

     protected DocumentHeader documentHeader;    

     @OneToMany(fetch=FetchType.LAZY, cascade={CascadeType.PERSIST, CascadeType.MERGE})

         @JoinColumn(name="DOC_HDR_ID", insertable=false, updatable=false)

     private List<PessimisticLock> pessimisticLocks;

     @Transient

     private List<AdHocRoutePerson> adHocRoutePersons;

     @Transient

     private List<AdHocRouteWorkgroup> adHocRouteWorkgroups;

     @Transient

     private List<Note> notes;

     private transient NoteService noteService;

     private transient AttachmentService attachmentService;

     /**

      * Constructs a DocumentBase.java.

      */

     public DocumentBase() {

         try {

             // create a new document header object

             Class<? extends DocumentHeader> documentHeaderClass = KRADServiceLocatorWeb.getDocumentHeaderService().getDocumentHeaderBaseClass();

             setDocumentHeader(documentHeaderClass.newInstance());

             pessimisticLocks = new ArrayList<PessimisticLock>();

             adHocRoutePersons = new ArrayList<AdHocRoutePerson>();

             adHocRouteWorkgroups = new ArrayList<AdHocRouteWorkgroup>();

             notes = new ArrayList<Note>();

         }

         catch (IllegalAccessException e) {

             throw new RuntimeException("Error instantiating DocumentHeader", e);

         }

         catch (InstantiationException e) {

             throw new RuntimeException("Error instantiating DocumentHeader", e);

         }

     }

     /**

      * @see org.kuali.rice.krad.document.Document#getAllowsCopy()

      */

     public boolean getAllowsCopy() {

         // TODO Auto-generated method stub

         return false;

     }

     /**

      * This is the default document title implementation. It concatenates the document's data dictionary file label attribute and

      * the document's document header description together. This title is used to populate workflow and will show up in document

      * search results and user action lists.

      *

      * @see org.kuali.rice.krad.document.Document#getDocumentTitle()

      */

     public String getDocumentTitle() {

         String documentTypeLabel = KewApiServiceLocator.getDocumentTypeService().getDocumentTypeByName(this.getDocumentHeader().getWorkflowDocument().getDocumentTypeName()).getLabel();

         if (null == documentTypeLabel) {

             documentTypeLabel = "";

         }

         String description = this.getDocumentHeader().getDocumentDescription();

         if (null == description) {

             description = "";

         }

         return documentTypeLabel + " - " + description;

     }

     /**

      * Uses the persistence service's implementation of OJB's retrieveNonKey() fields method.

      *

      * @see org.kuali.rice.krad.bo.BusinessObject#refresh()

      */

     @Override

     public void refresh() {

         KRADServiceLocator.getPersistenceService().retrieveNonKeyFields(this);

     }

     /**

      * Checks to see if the objectId value is empty. If so, it will try to refresh the object from the DB.

      *

      * @see org.kuali.rice.krad.document.Document#refreshIfEmpty()

      */

     public void refreshIfEmpty() {

         if (null == this.getDocumentHeader()) {

             this.refresh();

         }

         else if (StringUtils.isEmpty(this.getDocumentHeader().getObjectId())) {

             this.refresh();

         }

     }

     /**

      * Uses the persistence service to retrieve a reference object of a parent.

      *

      * @see org.kuali.rice.krad.document.Document#refreshReferenceObject(java.lang.String)

      */

     @Override

     public void refreshReferenceObject(String referenceObjectName) {

         KRADServiceLocator.getPersistenceService().retrieveReferenceObject(this, referenceObjectName);

     }

     /**

      * @see org.kuali.rice.krad.document.Document#prepareForSave()

      */

     public void prepareForSave() {

         // do nothing

     }

     /**

      * @see org.kuali.rice.krad.document.Document#processAfterRetrieve()

      */

     public void processAfterRetrieve() {

             // do nothing

     }

     /**

      * The the default implementation for RouteLevelChange does nothing, but is meant to provide a hook for documents to implement

      * for other needs.

      *

      * @see org.kuali.rice.krad.document.Document#doRouteLevelChange(org.kuali.rice.kew.dto.DocumentRouteLevelChangeDTO)

      */

     public void doRouteLevelChange(DocumentRouteLevelChangeDTO levelChangeEvent) {

         // do nothing

     }

     /**

      * @see org.kuali.rice.krad.document.Document#doActionTaken(org.kuali.rice.kew.dto.ActionTakenEventDTO)

      */

     public void doActionTaken(ActionTakenEventDTO event) {

         if ( (KRADServiceLocatorWeb.getDataDictionaryService().getDataDictionary().getDocumentEntry(this.getClass().getName()).getUseWorkflowPessimisticLocking()) && (!getNonLockingActionTakenCodes().contains(event.getActionTaken().getActionTaken())) ) {

             //DocumentAuthorizer documentAuthorizer = KRADServiceLocatorInternal.getDocumentAuthorizationService().getDocumentAuthorizer(this);

             //documentAuthorizer.establishWorkflowPessimisticLocking(this);

                 KRADServiceLocatorWeb.getPessimisticLockService().establishWorkflowPessimisticLocking(this);

         }

     }

     protected List<String> getNonLockingActionTakenCodes() {

         List<String> actionTakenStatusCodes = new ArrayList<String>();

         actionTakenStatusCodes.add(KEWConstants.ACTION_TAKEN_SAVED_CD);

         actionTakenStatusCodes.add(KEWConstants.ACTION_TAKEN_ACKNOWLEDGED_CD);

         actionTakenStatusCodes.add(KEWConstants.ACTION_TAKEN_FYI_CD);

         actionTakenStatusCodes.add(KEWConstants.ACTION_TAKEN_DENIED_CD);

         actionTakenStatusCodes.add(KEWConstants.ACTION_TAKEN_CANCELED_CD);

         actionTakenStatusCodes.add(KEWConstants.ACTION_TAKEN_LOG_DOCUMENT_ACTION_CD);

         return actionTakenStatusCodes;

     }

     /**

      * The the default implementation for afterWorkflowEngineProcess does nothing, but is meant to provide a hook for

      * documents to implement for other needs.

      * 

      * @see org.kuali.rice.krad.document.Document#afterWorkflowEngineProcess(boolean)

      */

     public void afterWorkflowEngineProcess(boolean successfullyProcessed) {

         if (KRADServiceLocatorWeb.getDataDictionaryService().getDataDictionary().getDocumentEntry(this.getClass().getName()).getUseWorkflowPessimisticLocking()) {

             if (successfullyProcessed) {

                 //DocumentAuthorizer documentAuthorizer = KRADServiceLocatorInternal.getDocumentAuthorizationService().getDocumentAuthorizer(this);

                 //documentAuthorizer.releaseWorkflowPessimisticLocking(this);

                     KRADServiceLocatorWeb.getPessimisticLockService().releaseWorkflowPessimisticLocking(this);

             }

         }

     }

     /**

      * The the default implementation for beforeWorkflowEngineProcess does nothing, but is meant to provide a hook for

      * documents to implement for other needs.

      * 

      * @see org.kuali.rice.krad.document.Document#beforeWorkflowEngineProcess()

      */

     public void beforeWorkflowEngineProcess() {

     // do nothing

     }

     /**

      * The default implementation returns no additional ids for the workflow engine to lock prior to processing.

      * 

      * @see org.kuali.rice.krad.document.Document#getWorkflowEngineDocumentIdsToLock()

      */

     public List<Long> getWorkflowEngineDocumentIdsToLock() {

                 return null;

         }

         /**

      * @see org.kuali.rice.krad.document.Copyable#toCopy()

      */

     public void toCopy() throws WorkflowException, IllegalStateException {

         if (!this.getAllowsCopy()) {

             throw new IllegalStateException(this.getClass().getName() + " does not support document-level copying");

         }

         String sourceDocumentHeaderId = getDocumentNumber();

         setNewDocumentHeader();

         getDocumentHeader().setDocumentTemplateNumber(sourceDocumentHeaderId);

         addCopyErrorDocumentNote("copied from document " + sourceDocumentHeaderId);

     }

     /**

      * Gets a new document header for this documents type and sets in the document instance.

      * 

      * @throws WorkflowException

      */

     protected void setNewDocumentHeader() throws WorkflowException {

         TransactionalDocument newDoc = (TransactionalDocument) KRADServiceLocatorWeb.getDocumentService().getNewDocument(getDocumentHeader().getWorkflowDocument().getDocumentTypeName());

         newDoc.getDocumentHeader().setDocumentDescription(getDocumentHeader().getDocumentDescription());

         newDoc.getDocumentHeader().setOrganizationDocumentNumber(getDocumentHeader().getOrganizationDocumentNumber());

         try {

             ObjectUtils.setObjectPropertyDeep(this, KRADPropertyConstants.DOCUMENT_NUMBER, documentNumber.getClass(), newDoc.getDocumentNumber());

         }

         catch (Exception e) {

             LOG.error("Unable to set document number property in copied document " + e.getMessage(),e);

             throw new RuntimeException("Unable to set document number property in copied document " + e.getMessage(),e);

         }

         // replace current documentHeader with new documentHeader

         setDocumentHeader(newDoc.getDocumentHeader());

     }

     /**

      * Adds a note to the document indicating it was created by a copy or error correction.

      * 

      * @param noteText - text for note

      */

     protected void addCopyErrorDocumentNote(String noteText) {

         Note note = null;

         try {

             note = KRADServiceLocatorWeb.getDocumentService().createNoteFromDocument(this,noteText);

         }

         catch (Exception e) {

          logErrors();

          throw new RuntimeException("Couldn't create note on copy or error",e);

         }

         addNote(note);

     }

     /**

      * @see org.kuali.rice.krad.document.Document#getXmlForRouteReport()

      */

     public String getXmlForRouteReport() {

         prepareForSave();

         populateDocumentForRouting();

         return getDocumentHeader().getWorkflowDocument().getApplicationContent();

     }

     /**

      * @see org.kuali.rice.krad.document.Document#populateDocumentForRouting()

      */

     public void populateDocumentForRouting() {

         getDocumentHeader().getWorkflowDocument().setApplicationContent(serializeDocumentToXml());

     }

     /**

      * @see org.kuali.rice.krad.document.Document#serializeDocumentToXml()

      */

     public String serializeDocumentToXml() {

         DocumentSerializerService documentSerializerService = KRADServiceLocatorWeb.getDocumentSerializerService();

         String xml = documentSerializerService.serializeDocumentToXmlForRouting(this);

         return xml;

     }

     /**

      * Wraps a document in an instance of KualiDocumentXmlMaterializer, that provides additional metadata for serialization

      * 

      * @see org.kuali.rice.krad.document.Document#wrapDocumentWithMetadataForXmlSerialization()

      */

     public KualiDocumentXmlMaterializer wrapDocumentWithMetadataForXmlSerialization() {

         KualiTransactionalDocumentInformation transInfo = new KualiTransactionalDocumentInformation();

         DocumentInitiator initiator = new DocumentInitiator();

         String initiatorPrincipalId = getDocumentHeader().getWorkflowDocument().getDocument().getInitiatorPrincipalId();

         Person initiatorUser = KimApiServiceLocator.getPersonService().getPerson(initiatorPrincipalId);

         initiator.setPerson(initiatorUser);

         transInfo.setDocumentInitiator(initiator);

         KualiDocumentXmlMaterializer xmlWrapper = new KualiDocumentXmlMaterializer();

         xmlWrapper.setDocument(this);

         xmlWrapper.setKualiTransactionalDocumentInformation(transInfo);

         return xmlWrapper;

     }

     /**

      * If workflowProperties have been defined within the data dictionary for this document, then it returns an instance of 

      * {@link BusinessObjectPropertySerializibilityEvaluator} initialized with the properties.  If none have been defined, then returns 

      * {@link AlwaysTruePropertySerializibilityEvaluator}.

      * 

      * @see org.kuali.rice.krad.document.Document#getDocumentPropertySerizabilityEvaluator()

      */

     public PropertySerializabilityEvaluator getDocumentPropertySerizabilityEvaluator() {

         String docTypeName = getDocumentHeader().getWorkflowDocument().getDocumentTypeName();

         DocumentEntry documentEntry = KRADServiceLocatorWeb.getDataDictionaryService().getDataDictionary().getDocumentEntry(docTypeName);

         WorkflowProperties workflowProperties = documentEntry.getWorkflowProperties();

         WorkflowAttributes workflowAttributes = documentEntry.getWorkflowAttributes();

         return createPropertySerializabilityEvaluator(workflowProperties, workflowAttributes);

     }

     protected PropertySerializabilityEvaluator createPropertySerializabilityEvaluator(WorkflowProperties workflowProperties, WorkflowAttributes workflowAttributes) {

             if (workflowAttributes != null) {

                     return new AlwaysFalsePropertySerializabilityEvaluator();

             }

             if (workflowProperties == null) {

                     return new AlwaysTruePropertySerializibilityEvaluator();

             }

             PropertySerializabilityEvaluator evaluator = new BusinessObjectPropertySerializibilityEvaluator();

             evaluator.initializeEvaluatorForDocument(this);

             return evaluator;

     }

     /**

      * Returns the POJO property name of "this" document in the object returned by {@link #wrapDocumentWithMetadataForXmlSerialization()}

      * 

      * @see org.kuali.rice.krad.document.Document#getBasePathToDocumentDuringSerialization()

      */

     public String getBasePathToDocumentDuringSerialization() {

         return "document";

     }

     /**

      * @see org.kuali.rice.krad.document.Document#getDocumentHeader()

      */

     public DocumentHeader getDocumentHeader() {

         return this.documentHeader;

     }

     /**

      * @see org.kuali.rice.krad.document.Document#setDocumentHeader(org.kuali.rice.krad.document.DocumentHeader)

      */

     public void setDocumentHeader(DocumentHeader documentHeader) {

         this.documentHeader = documentHeader;

     }

     /**

      * @see org.kuali.rice.krad.document.Document#getDocumentNumber()

      */

     public String getDocumentNumber() {

         return documentNumber;

     }

     /**

      * @see org.kuali.rice.krad.document.Document#setDocumentNumber(java.lang.String)

      */

     public void setDocumentNumber(String documentNumber) {

         this.documentNumber = documentNumber;

     }

     /**

      * @see org.kuali.rice.krad.document.Document#getAdHocRoutePersons()

      */

     public List<AdHocRoutePerson> getAdHocRoutePersons() {

         return adHocRoutePersons;

     }

     /**

      * @see org.kuali.rice.krad.document.Document#setAdHocRoutePersons(java.util.List)

      */

     public void setAdHocRoutePersons(List<AdHocRoutePerson> adHocRoutePersons) {

         this.adHocRoutePersons = adHocRoutePersons;

 }

     /**

      * @see org.kuali.rice.krad.document.Document#getAdHocRouteWorkgroups()

      */

     public List<AdHocRouteWorkgroup> getAdHocRouteWorkgroups() {

         return adHocRouteWorkgroups;

     }

     /**

      * @see org.kuali.rice.krad.document.Document#setAdHocRouteWorkgroups(java.util.List)

      */

     public void setAdHocRouteWorkgroups(List<AdHocRouteWorkgroup> adHocRouteWorkgroups) {

         this.adHocRouteWorkgroups = adHocRouteWorkgroups;

     }

     public void postProcessSave(KualiDocumentEvent event) {

         // TODO Auto-generated method stub

         }

     /**

      * Override this method with implementation specific prepareForSave logic

      * 

      * @see org.kuali.rice.krad.document.Document#prepareForSave(org.kuali.rice.krad.rule.event.KualiDocumentEvent)

      */

     public void prepareForSave(KualiDocumentEvent event) {

             // do nothing by default

     }

     public void validateBusinessRules(KualiDocumentEvent event) {

         if (GlobalVariables.getMessageMap().hasErrors()) {

             logErrors();

             throw new ValidationException("errors occured before business rule");

         }

         // perform validation against rules engine

         LOG.info("invoking rules engine on document " + getDocumentNumber());

         boolean isValid = true;

         isValid = KRADServiceLocatorWeb.getKualiRuleService().applyRules(event);

         // check to see if the br eval passed or failed

         if (!isValid) {

             logErrors();

             // TODO: better error handling at the lower level and a better error message are

             // needed here

             throw new ValidationException("business rule evaluation failed");

         }

         else if (GlobalVariables.getMessageMap().hasErrors()) {

             logErrors();

             throw new ValidationException("Unreported errors occured during business rule evaluation (rule developer needs to put meaningful error messages into global ErrorMap)");

         }

         LOG.debug("validation completed");

     }

     /**

      * This method logs errors.

      */

     protected void logErrors() {

             if ( LOG.isInfoEnabled() ) {

                 if (GlobalVariables.getMessageMap().hasErrors()) {

                     for (Iterator<Map.Entry<String, AutoPopulatingList<ErrorMessage>>> i = GlobalVariables.getMessageMap().getAllPropertiesAndErrors().iterator(); i.hasNext();) {

                         Map.Entry<String, AutoPopulatingList<ErrorMessage>> e = i.next();

                         StringBuffer logMessage = new StringBuffer();

                         logMessage.append("[" + e.getKey() + "] ");

                         boolean first = true;

                         AutoPopulatingList<ErrorMessage> errorList = e.getValue();

                         for (Iterator<ErrorMessage> j = errorList.iterator(); j.hasNext();) {

                             ErrorMessage em = j.next();

                             if (first) {

                                 first = false;

                             }

                             else {

                                 logMessage.append(";");

                             }

                             logMessage.append(em);

                         }

                         LOG.info(logMessage);

                     }

                 }

             }

     }

     /**

      * Hook for override

      * 

      * @see org.kuali.rice.krad.document.Document#generateSaveEvents()

      */

     public List<KualiDocumentEvent> generateSaveEvents() {

         return new ArrayList<KualiDocumentEvent>();

     }

     /**

      * @see org.kuali.rice.krad.document.Document#doRouteStatusChange(org.kuali.rice.kew.dto.DocumentRouteStatusChangeDTO)

      */

     public void doRouteStatusChange(DocumentRouteStatusChangeDTO statusChangeEvent) {

         // do nothing

     }

     /**

      * Returns the business object with which notes related to this document should be associated.

      * By default, the {@link DocumentHeader} of this document will be returned as the note target.

      * 

      * <p>Sub classes can override this method if they want notes to be associated with something

      * other than the document header.  If this method is overridden, the {@link #getNoteType()}

      * method should be overridden to return {@link NoteType#BUSINESS_OBJECT}

      * 

      * @return Returns the documentBusinessObject.

      */

     @Override

     public PersistableBusinessObject getNoteTarget() {

         return getDocumentHeader();

     }

     /**

          * Returns the {@link NoteType} to use for notes associated with this document.

          * By default this returns {@link NoteType#DOCUMENT_HEADER} since notes are

          * associated with the {@link DocumentHeader} record by default.

          * 

          * <p>The case in which this should be overridden is if {@link #getNoteTarget()} is

          * overridden to return an object other than the DocumentHeader.

          *

          * @return the note type to use for notes associated with this document

          * 

          * @see org.kuali.rice.krad.document.Document#getNoteType()

          */

         @Override

         public NoteType getNoteType() {

                 return NoteType.DOCUMENT_HEADER;

         }

         /**

          * @see org.kuali.rice.krad.document.Document#addNote(org.kuali.rice.krad.bo.Note)

          */

     @Override

         public void addNote(Note note) {

             if (note == null) {

                     throw new IllegalArgumentException("Note cannot be null.");

             }

                 notes.add(note);

         }

     /**

      * @see org.kuali.rice.krad.document.Document#removeNote(org.kuali.rice.krad.bo.Note)

      */

         @Override

         public boolean removeNote(Note note) {

                 if (note == null) {

                     throw new IllegalArgumentException("Note cannot be null.");

             }

                 return notes.remove(note);

         }

         /**

          * @see org.kuali.rice.krad.document.Document#getNote(int)

          */

         @Override

         public Note getNote(int index) {

                 return notes.get(index);

         }

         /**

          * @see org.kuali.rice.krad.document.Document#getNotes()

          */

         @Override

         public List<Note> getNotes() {

                 return notes;

         }

         /**

          * @see org.kuali.rice.krad.document.Document#setNotes(java.util.List)

          */

         @Override

         public void setNotes(List<Note> notes) {

                 if (notes == null) {

                         throw new IllegalArgumentException("List of notes must be non-null.");

                 }

                 this.notes = notes;

         }

     /**

      * @see org.kuali.rice.krad.document.Document#getPessimisticLocks()

      */

     public List<PessimisticLock> getPessimisticLocks() {

         return this.pessimisticLocks;

     }

     /**

      * @see org.kuali.rice.krad.document.Document#refreshPessimisticLocks()

      * @deprecated

      * This is not needed with the relationship set up with JPA annotations

      */

     @Deprecated 

     public void refreshPessimisticLocks() {

         this.pessimisticLocks.clear();

         this.pessimisticLocks = KRADServiceLocatorWeb.getPessimisticLockService().getPessimisticLocksForDocument(this.documentNumber);

     }

     /**

      * @param pessimisticLocks the PessimisticLock objects to set

      */

     public void setPessimisticLocks(List<PessimisticLock> pessimisticLocks) {

         this.pessimisticLocks = pessimisticLocks;

     }

     /**

      * @see org.kuali.rice.krad.document.Document#addPessimisticLock(org.kuali.rice.krad.document.authorization.PessimisticLock)

      */

     public void addPessimisticLock(PessimisticLock lock) {

         this.pessimisticLocks.add(lock);

     }

     /**

      * @see org.kuali.rice.krad.document.Document#getLockClearningMethodNames()

      */

     public List<String> getLockClearningMethodNames() {

         List<String> methodToCalls = new ArrayList<String>();

         methodToCalls.add(KRADConstants.CLOSE_METHOD);

         methodToCalls.add(KRADConstants.CANCEL_METHOD);

 //        methodToCalls.add(RiceConstants.BLANKET_APPROVE_METHOD);

         methodToCalls.add(KRADConstants.ROUTE_METHOD);

         methodToCalls.add(KRADConstants.APPROVE_METHOD);

         methodToCalls.add(KRADConstants.DISAPPROVE_METHOD);

         return methodToCalls;

     }

     /**

      * This default implementation simply returns false to indicate that custom lock descriptors are not supported by DocumentBase. If custom lock

      * descriptors are needed, the appropriate subclasses should override this method.

      * 

      * @see org.kuali.rice.krad.document.Document#useCustomLockDescriptors()

      */

     public boolean useCustomLockDescriptors() {

             return false;

     }

     /**

      * This default implementation just throws a PessimisticLockingException. Subclasses of DocumentBase that need support for custom lock descriptors

      * should override this method.

      * 

      * @see org.kuali.rice.krad.document.Document#getCustomLockDescriptor(org.kuali.rice.kim.bo.Person)

      */

     public String getCustomLockDescriptor(Person user) {

             throw new PessimisticLockingException("Document " + getDocumentNumber() +

                             " is using pessimistic locking with custom lock descriptors, but the document class has not overriden the getCustomLockDescriptor method");

     }

     protected AttachmentService getAttachmentService() {

                 if ( attachmentService == null ) {

                         attachmentService = KRADServiceLocator.getAttachmentService();

                 }

                 return attachmentService;

         }

     protected NoteService getNoteService() {

                 if ( noteService == null ) {

                         noteService = KRADServiceLocator.getNoteService();

                 }

                 return noteService;

         }

 }