/*

  * 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.kew.routeheader.service.impl;

 import org.kuali.rice.core.api.exception.RiceRuntimeException;

 import org.kuali.rice.kew.actionitem.ActionItem;

 import org.kuali.rice.kew.actionrequest.KimGroupRecipient;

 import org.kuali.rice.kew.actionrequest.Recipient;

 import org.kuali.rice.kew.actions.*;

 import org.kuali.rice.kew.actions.asyncservices.ActionInvocation;

 import org.kuali.rice.kew.actions.asyncservices.ActionInvocationService;

 import org.kuali.rice.kew.actiontaken.ActionTakenValue;

 import org.kuali.rice.kew.docsearch.service.SearchableAttributeProcessingService;

 import org.kuali.rice.kew.engine.CompatUtils;

 import org.kuali.rice.kew.engine.RouteContext;

 import org.kuali.rice.kew.engine.node.RouteNode;

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

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

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

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

 import org.kuali.rice.kew.messaging.MessageServiceNames;

 import org.kuali.rice.kew.postprocessor.PostProcessor;

 import org.kuali.rice.kew.routeheader.DocumentRouteHeaderValue;

 import org.kuali.rice.kew.routeheader.service.WorkflowDocumentService;

 import org.kuali.rice.kew.service.KEWServiceLocator;

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

 import org.kuali.rice.kim.api.entity.principal.Principal;

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

 import java.sql.Timestamp;

 import java.util.*;

 /**

  * @author Kuali Rice Team (rice.collab@kuali.org)

  *

  * this class mainly interacts with ActionEvent 'action' classes and non-vo objects.

  *

  */

 public class WorkflowDocumentServiceImpl implements WorkflowDocumentService {

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

         private void init(DocumentRouteHeaderValue routeHeader) {

                 KEWServiceLocator.getRouteHeaderService().lockRouteHeader(routeHeader.getDocumentId(), true);

                 KEWServiceLocator.getRouteHeaderService().saveRouteHeader(routeHeader);

         }

     private DocumentRouteHeaderValue finish(DocumentRouteHeaderValue routeHeader) {

             // reload the document from the database to get a "fresh and clean" copy if we aren't in the context of a

             // document being routed

             if (RouteContext.getCurrentRouteContext().getDocument() == null) {

                     return KEWServiceLocator.getRouteHeaderService().getRouteHeader(routeHeader.getDocumentId(), true);

             } else {

                     // we could enter this case if someone calls a method on WorkflowDocument (such as app specific route)

                     // from their post processor, in that case, if we cleared the database case as above we would

                     // end up getting an optimistic lock exception when the engine attempts to save the document after

                     // the post processor call

                     return routeHeader;

             }

     }

         public DocumentRouteHeaderValue acknowledgeDocument(String principalId, DocumentRouteHeaderValue routeHeader, String annotation) throws InvalidActionTakenException {

                 Principal principal = loadPrincipal(principalId);

                 AcknowledgeAction action = new AcknowledgeAction(routeHeader, principal, annotation);

                 action.performAction();

                 return finish(routeHeader);

         }

         public DocumentRouteHeaderValue releaseGroupAuthority(String principalId, DocumentRouteHeaderValue routeHeader, String groupId, String annotation) throws InvalidActionTakenException {

                 Principal principal = loadPrincipal(principalId);

                 ReleaseWorkgroupAuthority action = new ReleaseWorkgroupAuthority(routeHeader, principal, annotation, groupId);

                 action.performAction();

                 return finish(routeHeader);

         }

         public DocumentRouteHeaderValue takeGroupAuthority(String principalId, DocumentRouteHeaderValue routeHeader, String groupId, String annotation) throws InvalidActionTakenException {

                 Principal principal = loadPrincipal(principalId);

                 TakeWorkgroupAuthority action = new TakeWorkgroupAuthority(routeHeader, principal, annotation, groupId);

                 action.performAction();

                 return finish(routeHeader);

         }

         public DocumentRouteHeaderValue approveDocument(String principalId, DocumentRouteHeaderValue routeHeader, String annotation) throws InvalidActionTakenException {

                 Principal principal = loadPrincipal(principalId);

                 ApproveAction action = new ApproveAction(routeHeader, principal, annotation);

                 action.performAction();

                 return finish(routeHeader);

         }

         public DocumentRouteHeaderValue placeInExceptionRouting(String principalId, DocumentRouteHeaderValue routeHeader, String annotation) throws InvalidActionTakenException {

                   try {

                           KEWServiceLocator.getExceptionRoutingService().placeInExceptionRouting(annotation, null, routeHeader.getDocumentId());

                   } catch (Exception e) {

                           throw new RiceRuntimeException("Failed to place the document into exception routing!", e);

                   }

                   return finish(routeHeader);

           }

         public DocumentRouteHeaderValue adHocRouteDocumentToPrincipal(String principalId, DocumentRouteHeaderValue document, String actionRequested, String nodeName, String annotation, String targetPrincipalId,

                         String responsibilityDesc, Boolean forceAction, String requestLabel) throws WorkflowException {

                 Principal principal = loadPrincipal(principalId);

                 Recipient recipient = KEWServiceLocator.getIdentityHelperService().getPrincipalRecipient(targetPrincipalId);

                 AdHocAction action = new AdHocAction(document, principal, annotation, actionRequested, nodeName, recipient, responsibilityDesc, forceAction, requestLabel);

                 action.performAction();

                 return finish(document);

         }

         public DocumentRouteHeaderValue adHocRouteDocumentToGroup(String principalId, DocumentRouteHeaderValue document, String actionRequested, String nodeName, String annotation, String groupId,

                         String responsibilityDesc, Boolean forceAction, String requestLabel) throws WorkflowException {

                 Principal principal = loadPrincipal(principalId);

                 final Recipient recipient = new KimGroupRecipient(KimApiServiceLocator.getIdentityManagementService().getGroup(groupId));

                 AdHocAction action = new AdHocAction(document, principal, annotation, actionRequested, nodeName, recipient, responsibilityDesc, forceAction, requestLabel);

                 action.performAction();

                 return finish(document);

         }

         public DocumentRouteHeaderValue blanketApproval(String principalId, DocumentRouteHeaderValue routeHeader, String annotation, Integer routeLevel) throws InvalidActionTakenException {

                 RouteNode node = (routeLevel == null ? null : CompatUtils.getNodeForLevel(routeHeader.getDocumentType(), routeLevel));

                 if (node == null && routeLevel != null) {

                         throw new InvalidActionTakenException("Could not locate node for route level " + routeLevel);

                 }

                 Set<String> nodeNames = new HashSet<String>();

                 if (node != null) {

                         nodeNames = Collections.singleton(node.getRouteNodeName());

                 }

                 Principal principal = loadPrincipal(principalId);

                 ActionTakenEvent action = new BlanketApproveAction(routeHeader, principal, annotation, nodeNames);

                 action.performAction();

                 return finish(routeHeader);

         }

         public DocumentRouteHeaderValue blanketApproval(String principalId, DocumentRouteHeaderValue routeHeader, String annotation, Set nodeNames) throws InvalidActionTakenException {

                 Principal principal = loadPrincipal(principalId);

                 BlanketApproveAction action = new BlanketApproveAction(routeHeader, principal, annotation, nodeNames);

                 action.recordAction();

                 return finish(routeHeader);

         }

         public DocumentRouteHeaderValue cancelDocument(String principalId, DocumentRouteHeaderValue routeHeader, String annotation) throws InvalidActionTakenException {

                 // init(routeHeader);

                 Principal principal = loadPrincipal(principalId);

                 CancelAction action = new CancelAction(routeHeader, principal, annotation);

                 action.recordAction();

                 indexForSearchAfterActionIfNecessary(routeHeader);

                 return finish(routeHeader);

         }

         /**

          * Does a search index after a non-post processing action completes

          * @param routeHeader the route header of the document just acted upon

          */

         protected void indexForSearchAfterActionIfNecessary(DocumentRouteHeaderValue routeHeader) {

                 RouteContext routeContext = RouteContext.getCurrentRouteContext();

                 if (routeHeader.getDocumentType().hasSearchableAttributes() && routeContext.isSearchIndexingRequestedForContext()) {

                         SearchableAttributeProcessingService searchableAttService = (SearchableAttributeProcessingService) MessageServiceNames.getSearchableAttributeService(routeHeader);

                         searchableAttService.indexDocument(routeHeader.getDocumentId()); 

                 }

         }

         public DocumentRouteHeaderValue clearFYIDocument(String principalId, DocumentRouteHeaderValue routeHeader) throws InvalidActionTakenException {

                 // init(routeHeader);

                 Principal principal = loadPrincipal(principalId);

                 ClearFYIAction action = new ClearFYIAction(routeHeader, principal, "");

                 action.recordAction();

                 return finish(routeHeader);

         }

         public DocumentRouteHeaderValue completeDocument(String principalId, DocumentRouteHeaderValue routeHeader, String annotation) throws InvalidActionTakenException {

                 Principal principal = loadPrincipal(principalId);

                 CompleteAction action = new CompleteAction(routeHeader, principal, annotation);

                 action.performAction();

                 return finish(routeHeader);

         }

         public DocumentRouteHeaderValue createDocument(String principalId, DocumentRouteHeaderValue routeHeader) throws DocumentTypeNotFoundException, WorkflowException {

                 LOG.debug("Rmi createDocument() with "); // add some sort of a

                                                                                                         // routeheader logger

                 if (routeHeader.getDocumentId() != null) { // this is a debateable

                                                                                                                 // check - means the

                                                                                                                 // client is off

                         throw new InvalidActionTakenException("Document already has a Document id");

                 }

                 Principal principal = loadPrincipal(principalId);

                 boolean canInitiate = KEWServiceLocator.getDocumentTypePermissionService().canInitiate(principalId, routeHeader.getDocumentType());

                 if (!canInitiate) {

                         throw new InvalidActionTakenException("Principal with name '" + principal.getPrincipalName() + "' is not authorized to initiate documents of type '" + routeHeader.getDocumentType().getName());

                 }

         if (!routeHeader.getDocumentType().isDocTypeActive()) {

             // don't allow creation if document type is inactive

             throw new InvalidActionTakenException("Document type '" + routeHeader.getDocumentType().getName() + "' is inactive");

         }

                 routeHeader.setInitiatorWorkflowId(principalId);

                 if (routeHeader.getDocRouteStatus() == null) {

                         routeHeader.setDocRouteStatus(KEWConstants.ROUTE_HEADER_INITIATED_CD);

                 }

                 if (routeHeader.getDocRouteLevel() == null) {

                         routeHeader.setDocRouteLevel(Integer.valueOf(KEWConstants.ADHOC_ROUTE_LEVEL));

                 }

                 if (routeHeader.getCreateDate() == null) {

                         routeHeader.setCreateDate(new Timestamp(new Date().getTime()));

                 }

                 if (routeHeader.getDocVersion() == null) {

                         routeHeader.setDocVersion(Integer.valueOf(KEWConstants.CURRENT_DOCUMENT_VERSION));

                 }

                 if (routeHeader.getDocContent() == null) {

                         routeHeader.setDocContent(KEWConstants.DEFAULT_DOCUMENT_CONTENT);

                 }

                 routeHeader.setStatusModDate(new Timestamp(new Date().getTime()));

                 KEWServiceLocator.getRouteHeaderService().saveRouteHeader(routeHeader);

                 KEWServiceLocator.getWorkflowEngine().initializeDocument(routeHeader);

                 KEWServiceLocator.getRouteHeaderService().saveRouteHeader(routeHeader);

                 return routeHeader;

         }

         public DocumentRouteHeaderValue disapproveDocument(String principalId, DocumentRouteHeaderValue routeHeader, String annotation) throws InvalidActionTakenException {

                 Principal principal = loadPrincipal(principalId);

                 DisapproveAction action = new DisapproveAction(routeHeader, principal, annotation);

                 action.recordAction();

                 indexForSearchAfterActionIfNecessary(routeHeader);

                 return finish(routeHeader);

         }

         public DocumentRouteHeaderValue returnDocumentToPreviousRouteLevel(String principalId, DocumentRouteHeaderValue routeHeader, Integer destRouteLevel, String annotation)

                 throws InvalidActionTakenException {

                 DocumentRouteHeaderValue result = null;

                 if (destRouteLevel != null) {

                         RouteNode node = CompatUtils.getNodeForLevel(routeHeader.getDocumentType(), destRouteLevel);

                         if (node == null) {

                                 throw new InvalidActionTakenException("Could not locate node for route level " + destRouteLevel);

                         }

                         Principal principal = loadPrincipal(principalId);

                         ReturnToPreviousNodeAction action = new ReturnToPreviousNodeAction(routeHeader, principal, annotation, node.getRouteNodeName(), true);

                         action.performAction();

                         result = finish(routeHeader);

                 }

                 return result;

         }

         public DocumentRouteHeaderValue returnDocumentToPreviousNode(String principalId, DocumentRouteHeaderValue routeHeader, String destinationNodeName, String annotation)

                         throws InvalidActionTakenException {

                 Principal principal = loadPrincipal(principalId);

                 ReturnToPreviousNodeAction action = new ReturnToPreviousNodeAction(routeHeader, principal, annotation, destinationNodeName, true);

                 action.performAction();

                 return finish(routeHeader);

         }

         public DocumentRouteHeaderValue routeDocument(String principalId, DocumentRouteHeaderValue routeHeader, String annotation) throws WorkflowException,

                         InvalidActionTakenException {

                 Principal principal = loadPrincipal(principalId);

                 RouteDocumentAction actionEvent = new RouteDocumentAction(routeHeader, principal, annotation);

                 actionEvent.performAction();

         LOG.info("routeDocument: " + routeHeader);

                 return finish(routeHeader);

         }

         public DocumentRouteHeaderValue saveRoutingData(String principalId, DocumentRouteHeaderValue routeHeader) {

                 KEWServiceLocator.getRouteHeaderService().saveRouteHeader(routeHeader);

                 // save routing data should invoke the post processor doActionTaken for SAVE

                   ActionTakenValue val = new ActionTakenValue();

                   val.setActionTaken(KEWConstants.ACTION_TAKEN_SAVED_CD);

                   val.setDocumentId(routeHeader.getDocumentId());

                   PostProcessor postProcessor = routeHeader.getDocumentType().getPostProcessor();

                   try {

                           postProcessor.doActionTaken(new org.kuali.rice.kew.postprocessor.ActionTakenEvent(routeHeader.getDocumentId(), routeHeader.getAppDocId(), val));

                   } catch (Exception e) {

                           if (e instanceof RuntimeException) {

                                   throw (RuntimeException)e;

                           }

                           throw new WorkflowRuntimeException(e);

                   }

                   RouteContext routeContext = RouteContext.getCurrentRouteContext();

                   if (routeHeader.getDocumentType().hasSearchableAttributes() && !routeContext.isSearchIndexingRequestedForContext()) {

                           routeContext.requestSearchIndexingForContext();

                         SearchableAttributeProcessingService searchableAttService = (SearchableAttributeProcessingService) MessageServiceNames.getSearchableAttributeService(routeHeader);

                         searchableAttService.indexDocument(routeHeader.getDocumentId());

                 }

                 return finish(routeHeader);

         }

         public DocumentRouteHeaderValue saveDocument(String principalId, DocumentRouteHeaderValue routeHeader, String annotation) throws InvalidActionTakenException {

                 Principal principal = loadPrincipal(principalId);

                 SaveActionEvent action = new SaveActionEvent(routeHeader, principal, annotation);

                 action.performAction();

                 return finish(routeHeader);

         }

         public void deleteDocument(String principalId, DocumentRouteHeaderValue routeHeader) throws WorkflowException {

                 if (routeHeader.getDocumentId() == null) {

                         LOG.debug("Null Document id passed.");

                         throw new WorkflowException("Document id must not be null.");

                 }

                 KEWServiceLocator.getRouteHeaderService().deleteRouteHeader(routeHeader);

         }

         public void logDocumentAction(String principalId, DocumentRouteHeaderValue routeHeader, String annotation) throws InvalidActionTakenException {

                 Principal principal = loadPrincipal(principalId);

                 LogDocumentActionAction action = new LogDocumentActionAction(routeHeader, principal, annotation);

                 action.recordAction();

         }

         public DocumentRouteHeaderValue moveDocument(String principalId, DocumentRouteHeaderValue routeHeader, MovePoint movePoint, String annotation) throws InvalidActionTakenException {

                 Principal principal = loadPrincipal(principalId);

                 MoveDocumentAction action = new MoveDocumentAction(routeHeader, principal, annotation, movePoint);

                 action.performAction();

                 return finish(routeHeader);

         }

         public DocumentRouteHeaderValue superUserActionRequestApproveAction(String principalId, DocumentRouteHeaderValue routeHeader, Long actionRequestId, String annotation, boolean runPostProcessor)

                         throws InvalidActionTakenException {

                 init(routeHeader);

                 Principal principal = loadPrincipal(principalId);

                 SuperUserActionRequestApproveEvent suActionRequestApprove = new SuperUserActionRequestApproveEvent(routeHeader, principal, actionRequestId, annotation, runPostProcessor);

                 suActionRequestApprove.recordAction();

                 // suActionRequestApprove.queueDocument();

                 RouteContext.getCurrentRouteContext().requestSearchIndexingForContext(); // make sure indexing is requested

                 indexForSearchAfterActionIfNecessary(routeHeader);

                 return finish(routeHeader);

         }

     /**

      * TODO As with superUserReturnDocumentToPreviousNode, we allow for the passing in of a document ID here to allow for

      * the document load inside the current running transaction.  Otherwise we get an optimistic lock exception

      * when attempting to save the branch after the transition to the 'A' status.

      */

     public DocumentRouteHeaderValue superUserActionRequestApproveAction(String principalId, String documentId, Long actionRequestId, String annotation, boolean runPostProcessor)

         throws InvalidActionTakenException {

         return superUserActionRequestApproveAction(principalId, KEWServiceLocator.getRouteHeaderService().getRouteHeader(documentId), actionRequestId, annotation, runPostProcessor);

     }

         public DocumentRouteHeaderValue superUserApprove(String principalId, DocumentRouteHeaderValue routeHeader, String annotation, boolean runPostProcessor) throws InvalidActionTakenException {

                 init(routeHeader);

                 Principal principal = loadPrincipal(principalId);

                 new SuperUserApproveEvent(routeHeader, principal, annotation, runPostProcessor).recordAction();

                 RouteContext.getCurrentRouteContext().requestSearchIndexingForContext(); // make sure indexing is requested

                 indexForSearchAfterActionIfNecessary(routeHeader);

                 return finish(routeHeader);

         }

         public DocumentRouteHeaderValue superUserCancelAction(String principalId, DocumentRouteHeaderValue routeHeader, String annotation, boolean runPostProcessor) throws InvalidActionTakenException {

                 init(routeHeader);

                 Principal principal = loadPrincipal(principalId);

                 new SuperUserCancelEvent(routeHeader, principal, annotation, runPostProcessor).recordAction();

                 RouteContext.getCurrentRouteContext().requestSearchIndexingForContext(); // make sure indexing is requested

                 indexForSearchAfterActionIfNecessary(routeHeader);

                 return finish(routeHeader);

         }

         public DocumentRouteHeaderValue superUserDisapproveAction(String principalId, DocumentRouteHeaderValue routeHeader, String annotation, boolean runPostProcessor) throws InvalidActionTakenException {

                 init(routeHeader);

                 Principal principal = loadPrincipal(principalId);

                 new SuperUserDisapproveEvent(routeHeader, principal, annotation, runPostProcessor).recordAction();

                 RouteContext.getCurrentRouteContext().requestSearchIndexingForContext(); // make sure indexing is requested

                 indexForSearchAfterActionIfNecessary(routeHeader);

                 return finish(routeHeader);

         }

         public DocumentRouteHeaderValue superUserNodeApproveAction(String principalId, DocumentRouteHeaderValue routeHeader, String nodeName, String annotation, boolean runPostProcessor) throws InvalidActionTakenException {

                 init(routeHeader);

                 Principal principal = loadPrincipal(principalId);

                 new SuperUserNodeApproveEvent(routeHeader, principal, annotation, runPostProcessor, nodeName).recordAction();

                 indexForSearchAfterActionIfNecessary(routeHeader);

                 return finish(routeHeader);

         }

         /**

          * TODO As with superUserReturnDocumentToPreviousNode, we allow for the passing in of a document ID here to allow for

          * the document load inside the current running transaction.  Otherwise we get an optimistic lock exception

          * when attempting to save the branch after the transition to the 'A' status.

          */

         public DocumentRouteHeaderValue superUserNodeApproveAction(String principalId, String documentId, String nodeName, String annotation, boolean runPostProcessor) throws InvalidActionTakenException {

                 return superUserNodeApproveAction(principalId, KEWServiceLocator.getRouteHeaderService().getRouteHeader(documentId), nodeName, annotation, runPostProcessor);

         }

         /**

          * TODO remove this implementation in favor of having the SuperUserAction call through the WorkflowDocument object.  This

          * method is here to resolve KULWF-727 where we were getting an optimistic lock exception from the super user screen on

          * return to previous node.  This allows us to load the DocumentRouteHeaderValue inside of the transaction interceptor

          * so that we can stay within the same PersistenceBroker cache.

          */

         public DocumentRouteHeaderValue superUserReturnDocumentToPreviousNode(String principalId, String documentId, String nodeName, String annotation, boolean runPostProcessor)

                 throws InvalidActionTakenException {

                 return superUserReturnDocumentToPreviousNode(principalId, KEWServiceLocator.getRouteHeaderService().getRouteHeader(documentId), nodeName, annotation, runPostProcessor);

         }

         public DocumentRouteHeaderValue superUserReturnDocumentToPreviousNode(String principalId, DocumentRouteHeaderValue routeHeader, String nodeName, String annotation, boolean runPostProcessor)

                         throws InvalidActionTakenException {

                 init(routeHeader);

                 Principal principal = loadPrincipal(principalId);

                 SuperUserReturnToPreviousNodeAction action = new SuperUserReturnToPreviousNodeAction(routeHeader, principal, annotation, runPostProcessor, nodeName);

                 action.recordAction();

                 RouteContext.getCurrentRouteContext().requestSearchIndexingForContext(); // make sure indexing is requested

                 indexForSearchAfterActionIfNecessary(routeHeader);

                 return finish(routeHeader);

         }

         public void takeMassActions(String principalId, List actionInvocations) {

                 Principal principal = loadPrincipal(principalId);

                 for (Iterator iterator = actionInvocations.iterator(); iterator.hasNext();) {

                         ActionInvocation invocation = (ActionInvocation) iterator.next();

                         ActionItem actionItem = KEWServiceLocator.getActionListService().findByActionItemId(invocation.getActionItemId());

                         if (actionItem == null) {

                                 LOG.warn("Could not locate action item for the given action item id [" + invocation.getActionItemId() + "], not taking mass action on it.");

                                 continue;

                         }

                         KEWServiceLocator.getActionListService().deleteActionItem(actionItem, true);

                         ActionInvocationService actionInvocService = MessageServiceNames.getActionInvocationProcessorService(

                                         KEWServiceLocator.getRouteHeaderService().getRouteHeader(actionItem.getDocumentId()));

                         actionInvocService.invokeAction(principalId, actionItem.getDocumentId(), invocation);

 //                        ActionInvocationProcessor.queueActionInvocation(user, actionItem.getDocumentId(), invocation);

                 }

         }

         public DocumentRouteHeaderValue revokeAdHocRequests(String principalId, DocumentRouteHeaderValue document, AdHocRevoke revoke, String annotation) throws InvalidActionTakenException {

                 Principal principal = loadPrincipal(principalId);

                 RevokeAdHocAction action = new RevokeAdHocAction(document, principal, revoke, annotation);

                 action.performAction();

                 return finish(document);

         }

         protected Principal loadPrincipal(String principalId) {

                 return KEWServiceLocator.getIdentityHelperService().getPrincipal(principalId);

         }

 }