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   1 /**
   2  *  This document is a part of the source code and related artifacts
   3  *  for CollectionSpace, an open source collections management system
   4  *  for museums and related institutions:
   5
   6  *  http://www.collectionspace.org
   7  *  http://wiki.collectionspace.org
   8
   9  *  Copyright 2009 University of California at Berkeley
  10
  11  *  Licensed under the Educational Community License (ECL), Version 2.0.
  12  *  You may not use this file except in compliance with this License.
  13
  14  *  You may obtain a copy of the ECL 2.0 License at
  15
  16  *  https://source.collectionspace.org/collection-space/LICENSE.txt
  17
  18  *  Unless required by applicable law or agreed to in writing, software
  19  *  distributed under the License is distributed on an "AS IS" BASIS,
  20  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  21  *  See the License for the specific language governing permissions and
  22  *  limitations under the License.
  23  */
  24 package org.collectionspace.services.relation.nuxeo;
  25
  26 import java.util.HashMap;
  27 import java.util.Iterator;
  28 import java.net.HttpURLConnection;
  29
  30 import org.collectionspace.services.client.PoxPayloadIn;
  31 import org.collectionspace.services.client.PoxPayloadOut;
  32 import org.collectionspace.services.common.NuxeoBasedResource;
  33 import org.collectionspace.services.common.ServiceException;
  34 import org.collectionspace.services.common.ServiceMain;
  35 import org.collectionspace.services.common.api.Tools;
  36 import org.collectionspace.services.common.config.TenantBindingConfigReaderImpl;
  37 import org.collectionspace.services.common.context.ServiceBindingUtils;
  38 import org.collectionspace.services.common.document.DocumentNotFoundException;
  39 import org.collectionspace.services.common.document.DocumentWrapper;
  40 import org.collectionspace.services.common.document.InvalidDocumentException;
  41 import org.collectionspace.services.common.relation.RelationJAXBSchema;
  42 import org.collectionspace.services.common.relation.nuxeo.RelationConstants;
  43 import org.collectionspace.services.common.context.ServiceContext;
  44 import org.collectionspace.services.lifecycle.TransitionDef;
  45 import org.collectionspace.services.nuxeo.util.NuxeoUtils;
  46 import org.collectionspace.services.relation.RelationsCommon;
  47 import org.collectionspace.services.relation.RelationsCommonList;
  48 import org.collectionspace.services.relation.RelationsCommonList.RelationListItem;
  49 import org.collectionspace.services.relation.RelationsDocListItem;
  50 import org.collectionspace.services.client.CollectionSpaceClient;
  51 import org.collectionspace.services.client.workflow.WorkflowClient;
  52 import org.collectionspace.services.config.service.ServiceBindingType;
  53 import org.collectionspace.services.nuxeo.client.java.RemoteDocumentModelHandlerImpl;
  54 import org.collectionspace.services.nuxeo.client.java.CoreSessionInterface;
  55 import org.collectionspace.services.nuxeo.client.java.NuxeoRepositoryClientImpl;
  56
  57 import org.nuxeo.ecm.core.api.ClientException;
  58 import org.nuxeo.ecm.core.api.DocumentModel;
  59 import org.nuxeo.ecm.core.api.DocumentModelList;
  60 import org.nuxeo.ecm.core.api.model.PropertyException;
  61
  62 import org.slf4j.Logger;
  63 import org.slf4j.LoggerFactory;
  64
  65 /**
  66  * RelationDocumentModelHandler
  67  *
  68  * $LastChangedRevision: $
  69  * $LastChangedDate: $
  70  */
  71 public class RelationDocumentModelHandler
  72         extends RemoteDocumentModelHandlerImpl<RelationsCommon, RelationsCommonList> {
  73
  74     private final Logger logger = LoggerFactory.getLogger(RelationDocumentModelHandler.class);
  75     /**
  76      * relation is used to stash JAXB object to use when handle is called
  77      * for Action.CREATE, Action.UPDATE or Action.GET
  78      */
  79     private RelationsCommon relation;
  80     /**
  81      * relationList is stashed when handle is called
  82      * for ACTION.GET_ALL
  83      */
  84     private RelationsCommonList relationList;
  85
  86     private static final String ERROR_TERMS_IN_WORKFLOWSTATE = "Cannot modify a relationship if either end is in the workflow state: ";
  87
  88     /*
  89      * Will return 'true' if either the subject's or object's current workflow state *contain* the passed in workflow
  90      * state.
  91      *
  92      * For example:
  93      *  - will return 'true' if the subject's workflow state is "replicated_deleted" and the passed in workflow state is "replicated" or "deleted".
  94      *  - will return 'true' if the subject's or object's workflow state is "locked" and the passed in workflow state is "locked"
  95      */
  96     private boolean subjectOrObjectInWorkflowState(DocumentWrapper<DocumentModel> wrapDoc, String workflowState) throws ServiceException {
  97         boolean result = false;
  98         DocumentModel relationDocModel = wrapDoc.getWrappedObject();
  99         String errMsg = ERROR_TERMS_IN_WORKFLOWSTATE + workflowState;
 100
 101         CoreSessionInterface repoSession = this.getRepositorySession();
 102         try {
 103                         DocumentModel subjectDocModel = getSubjectOrObjectDocModel(repoSession, relationDocModel, SUBJ_DOC_MODEL);
 104                         DocumentModel objectDocModel = getSubjectOrObjectDocModel(repoSession, relationDocModel, OBJ_DOC_MODEL);
 105                         if (subjectDocModel.getCurrentLifeCycleState().contains(workflowState) ||
 106                                         objectDocModel.getCurrentLifeCycleState().contains(workflowState)) {
 107                                 result = true;
 108                         }
 109                 } catch (Exception e) {
 110                         if (logger.isInfoEnabled() == true) {
 111                                 logger.info(errMsg, e);
 112                         }
 113                 }
 114
 115         return result;
 116     }
 117
 118         @Override
 119         /*
 120          * Until we rework the RepositoryClient to handle the workflow transition (just like it does for 'create', 'get', 'update', and 'delete'), this method will only check to see
 121          * if the transition is allowed.  Until then, the WorkflowDocumentModelHandler class does the actual workflow transition.
 122          *
 123          * @see org.collectionspace.services.nuxeo.client.java.RemoteDocumentModelHandlerImpl#handleWorkflowTransition(org.collectionspace.services.common.document.DocumentWrapper, org.collectionspace.services.lifecycle.TransitionDef)
 124          */
 125         public void handleWorkflowTransition(ServiceContext ctx, DocumentWrapper<DocumentModel> wrapDoc, TransitionDef transitionDef)
 126                         throws Exception {
 127                 if (subjectOrObjectInWorkflowState(wrapDoc, WorkflowClient.WORKFLOWSTATE_LOCKED) == true) {
 128                 throw new ServiceException(HttpURLConnection.HTTP_FORBIDDEN,
 129                     "Cannot change a relationship if either end of it is in the workflow state: " + WorkflowClient.WORKFLOWSTATE_LOCKED);
 130                 }
 131         }
 132
 133     @Override
 134     public void handleCreate(DocumentWrapper<DocumentModel> wrapDoc) throws Exception {
 135         // Merge in the data from the payload
 136         super.handleCreate(wrapDoc);
 137
 138         // And take care of ensuring all the values for the relation info are correct
 139         populateSubjectAndObjectValues(wrapDoc);
 140
 141         // We can't create a relationship record if either the subject or the object is in a locked workflow state
 142         String workflowState = WorkflowClient.WORKFLOWSTATE_LOCKED;
 143         if (subjectOrObjectInWorkflowState(wrapDoc, workflowState) == true) {
 144                 throw new ServiceException(HttpURLConnection.HTTP_FORBIDDEN,
 145                     "Cannot create a relationship if either end is in the workflow state: " + workflowState);
 146         }
 147     }
 148
 149     @Override
 150     public void handleUpdate(DocumentWrapper<DocumentModel> wrapDoc) throws Exception {
 151         // Merge in the data from the payload
 152         super.handleUpdate(wrapDoc);
 153
 154         // And take care of ensuring all the values for the relation info are correct
 155         populateSubjectAndObjectValues(wrapDoc);
 156     }
 157
 158     @Override
 159     public boolean handleDelete(DocumentWrapper<DocumentModel> wrapDoc) throws Exception {
 160         boolean result = true;
 161
 162         String workflowState = WorkflowClient.WORKFLOWSTATE_LOCKED;
 163         // Neither the subject nor the object can be locked
 164         if (subjectOrObjectInWorkflowState(wrapDoc, workflowState) == false) {
 165                 super.handleDelete(wrapDoc);
 166         } else {
 167                 throw new ServiceException(HttpURLConnection.HTTP_FORBIDDEN,
 168                     "Cannot delete a relationship if either end is in the workflow state: " + workflowState);
 169         }
 170
 171         return result;
 172     }
 173
 174     private void populateSubjectAndObjectValues(DocumentWrapper<DocumentModel> wrapDoc) throws Exception {
 175         // Obtain document models for the subject and object of the relation, so that
 176         // we ensure we have value docType, URI info. If the docModels support refNames,
 177         // we will also set those.
 178         // Note that this introduces another caching problem...
 179         DocumentModel relationDocModel = wrapDoc.getWrappedObject();
 180         CoreSessionInterface repoSession = this.getRepositorySession();
 181
 182         DocumentModel subjectDocModel = getSubjectOrObjectDocModel(repoSession, relationDocModel, SUBJ_DOC_MODEL);
 183         DocumentModel objectDocModel = getSubjectOrObjectDocModel(repoSession, relationDocModel, OBJ_DOC_MODEL);
 184
 185         // Use values from the subject and object document models to populate the
 186         // relevant fields of the relation's own document model.
 187         if (subjectDocModel != null) {
 188             populateSubjectOrObjectValues(relationDocModel, subjectDocModel, SUBJ_DOC_MODEL);
 189         }
 190         if (objectDocModel != null) {
 191             populateSubjectOrObjectValues(relationDocModel, objectDocModel, OBJ_DOC_MODEL);
 192         }
 193     }
 194
 195     @Override
 196     public RelationsCommon getCommonPart() {
 197         return relation;
 198     }
 199
 200     @Override
 201     public void setCommonPart(RelationsCommon theRelation) {
 202         this.relation = theRelation;
 203     }
 204
 205     /**get associated Relation (for index/GET_ALL)
 206      */
 207     @Override
 208     public RelationsCommonList getCommonPartList() {
 209         return relationList;
 210     }
 211
 212     @Override
 213     public void setCommonPartList(RelationsCommonList theRelationList) {
 214         this.relationList = theRelationList;
 215     }
 216
 217     @Override
 218     public RelationsCommon extractCommonPart(DocumentWrapper<DocumentModel> wrapDoc)
 219             throws Exception {
 220         throw new UnsupportedOperationException();
 221     }
 222
 223     @Override
 224     public void fillCommonPart(RelationsCommon theRelation, DocumentWrapper<DocumentModel> wrapDoc) throws Exception {
 225         throw new UnsupportedOperationException();
 226     }
 227
 228     @Override
 229     public RelationsCommonList extractCommonPartList(DocumentWrapper<DocumentModelList> wrapDoc) throws Exception {
 230         RelationsCommonList relList = this.extractPagingInfo(new RelationsCommonList(), wrapDoc);
 231         relList.setFieldsReturned("subjectCsid|relationshipType|predicateDisplayName|relationshipMetaType|objectCsid|uri|csid|subject|object");
 232         ServiceContext<PoxPayloadIn, PoxPayloadOut> ctx = getServiceContext();
 233         String serviceContextPath = getServiceContextPath();
 234
 235         TenantBindingConfigReaderImpl tReader = ServiceMain.getInstance().getTenantBindingConfigReader();
 236         String serviceName = getServiceContext().getServiceName().toLowerCase();
 237         ServiceBindingType sbt = tReader.getServiceBinding(ctx.getTenantId(), serviceName);
 238
 239         Iterator<DocumentModel> iter = wrapDoc.getWrappedObject().iterator();
 240         while (iter.hasNext()) {
 241             DocumentModel docModel = iter.next();
 242             RelationListItem relListItem = getRelationListItem(ctx, sbt, tReader, docModel, serviceContextPath);
 243             relList.getRelationListItem().add(relListItem);
 244         }
 245         return relList;
 246     }
 247
 248     /** Gets the relation list item, looking up the subject and object documents, and getting summary
 249      *  info via the objectName and objectNumber properties in tenant-bindings.
 250      * @param ctx the ctx
 251      * @param sbt the ServiceBindingType of Relations service
 252      * @param tReader the tenant-bindings reader, for looking up docnumber and docname
 253      * @param docModel the doc model
 254      * @param serviceContextPath the service context path
 255      * @return the relation list item, with nested subject and object summary info.
 256      * @throws Exception the exception
 257      */
 258     private RelationListItem getRelationListItem(ServiceContext<PoxPayloadIn, PoxPayloadOut> ctx,
 259             ServiceBindingType sbt,
 260             TenantBindingConfigReaderImpl tReader,
 261             DocumentModel docModel,
 262             String serviceContextPath) throws Exception {
 263         RelationListItem relationListItem = new RelationListItem();
 264         String id = getCsid(docModel);
 265         relationListItem.setCsid(id);
 266
 267         relationListItem.setSubjectCsid((String) docModel.getProperty(ctx.getCommonPartLabel(),
 268                                                                                                         RelationJAXBSchema.SUBJECT_CSID));
 269
 270         String predicate = (String) docModel.getProperty(ctx.getCommonPartLabel(),
 271                                                                                                         RelationJAXBSchema.RELATIONSHIP_TYPE);
 272         relationListItem.setRelationshipType(predicate);
 273         relationListItem.setPredicate(predicate); //predicate is new name for relationshipType.
 274         relationListItem.setPredicateDisplayName((String) docModel.getProperty(ctx.getCommonPartLabel(),
 275                                                                                                         RelationJAXBSchema.RELATIONSHIP_TYPE_DISPLAYNAME));
 276
 277         relationListItem.setRelationshipMetaType((String) docModel.getProperty(ctx.getCommonPartLabel(),
 278                                                                                                         RelationJAXBSchema.RELATIONSHIP_META_TYPE));
 279         relationListItem.setObjectCsid((String) docModel.getProperty(ctx.getCommonPartLabel(),
 280                                                                                                         RelationJAXBSchema.OBJECT_CSID));
 281
 282         relationListItem.setUri(serviceContextPath + id);
 283
 284         //Now fill in summary info for the related docs: subject and object.
 285         String subjectCsid = relationListItem.getSubjectCsid();
 286         String subjectDocumentType = (String) docModel.getProperty(ctx.getCommonPartLabel(),
 287                                                                                                         RelationJAXBSchema.SUBJECT_DOCTYPE);
 288         RelationsDocListItem subject = createRelationsDocListItem(ctx, sbt, subjectCsid, tReader, subjectDocumentType);
 289
 290         String subjectUri = (String) docModel.getProperty(ctx.getCommonPartLabel(),
 291                                                                                                         RelationJAXBSchema.SUBJECT_URI);
 292         subject.setUri(subjectUri);
 293         String subjectRefName = (String) docModel.getProperty(ctx.getCommonPartLabel(),
 294                                                                                                         RelationJAXBSchema.SUBJECT_REFNAME);
 295         subject.setRefName(subjectRefName);
 296         relationListItem.setSubject(subject);
 297
 298         String objectCsid = relationListItem.getObjectCsid();
 299         String objectDocumentType = (String) docModel.getProperty(ctx.getCommonPartLabel(),
 300                                                                                                         RelationJAXBSchema.OBJECT_DOCTYPE);
 301         RelationsDocListItem object = createRelationsDocListItem(ctx, sbt, objectCsid, tReader, objectDocumentType);
 302
 303         String objectUri = (String) docModel.getProperty(ctx.getCommonPartLabel(),
 304                                                                                                         RelationJAXBSchema.OBJECT_URI);
 305         object.setUri(objectUri);
 306         String objectRefName = (String) docModel.getProperty(ctx.getCommonPartLabel(),
 307                                                                                                         RelationJAXBSchema.OBJECT_REFNAME);
 308         object.setRefName(objectRefName);
 309         relationListItem.setObject(object);
 310
 311         return relationListItem;
 312     }
 313
 314     // DocumentModel itemDocModel = docModelFromCSID(ctx, itemCsid);
 315     protected RelationsDocListItem createRelationsDocListItem(
 316                 ServiceContext<PoxPayloadIn, PoxPayloadOut> ctx,
 317             ServiceBindingType sbt,
 318             String itemCsid,
 319             TenantBindingConfigReaderImpl tReader,
 320             String documentType) throws Exception {
 321         RelationsDocListItem item = new RelationsDocListItem();
 322         item.setDocumentType(documentType);//this one comes from the record, as subjectDocumentType, objectDocumentType.
 323         item.setCsid(itemCsid);
 324
 325         DocumentModel itemDocModel = NuxeoUtils.getDocFromCsid(ctx, this.getRepositorySession(), itemCsid);    //null if not found.
 326         if (itemDocModel != null) {
 327             String itemDocType = itemDocModel.getDocumentType().getName();
 328             itemDocType = ServiceBindingUtils.getUnqualifiedTenantDocType(itemDocType);
 329             if (Tools.isBlank(documentType)) {
 330                 item.setDocumentType(itemDocType);
 331             }
 332
 333             //TODO: ensure that itemDocType is really the entry point, i.e. servicename==doctype
 334             //ServiceBindingType itemSbt2 = tReader.getServiceBinding(ctx.getTenantId(), itemDocType);
 335             String propName = "ERROR-FINDING-PROP-VALUE";
 336             ServiceBindingType itemSbt = tReader.getServiceBindingForDocType(ctx.getTenantId(), itemDocType);
 337             try {
 338                 propName = ServiceBindingUtils.getPropertyValue(itemSbt, ServiceBindingUtils.OBJ_NAME_PROP);
 339                 String itemDocname = ServiceBindingUtils.getMappedFieldInDoc(itemSbt, ServiceBindingUtils.OBJ_NAME_PROP, itemDocModel);
 340                 if (propName == null || itemDocname == null) {
 341                 } else {
 342                     item.setName(itemDocname);
 343                 }
 344             } catch (Throwable t) {
 345                 logger.error("====Error finding objectNameProperty: " + itemDocModel + " field " + ServiceBindingUtils.OBJ_NAME_PROP + "=" + propName
 346                         + " not found in itemDocType: " + itemDocType + " inner: " + t.getMessage());
 347             }
 348             propName = "ERROR-FINDING-PROP-VALUE";
 349             try {
 350                 propName = ServiceBindingUtils.getPropertyValue(itemSbt, ServiceBindingUtils.OBJ_NUMBER_PROP);
 351                 String itemDocnumber = ServiceBindingUtils.getMappedFieldInDoc(itemSbt, ServiceBindingUtils.OBJ_NUMBER_PROP, itemDocModel);
 352
 353                 if (propName == null || itemDocnumber == null) {
 354                 } else {
 355                     item.setNumber(itemDocnumber);
 356                 }
 357             } catch (Throwable t) {
 358                 logger.error("====Error finding objectNumberProperty: " + ServiceBindingUtils.OBJ_NUMBER_PROP + "=" + propName
 359                         + " not found in itemDocType: " + itemDocType + " inner: " + t.getMessage());
 360             }
 361         } else {
 362             item.setError("INVALID: related object is absent");
 363             // Laramie20110510 CSPACE-3739  throw the exception for 3739, otherwise, don't throw it.
 364             //throw new Exception("INVALID: related object is absent "+itemCsid);
 365         }
 366         return item;
 367     }
 368
 369     @Override
 370     public String getQProperty(String prop) {
 371         return "/" + RelationConstants.NUXEO_SCHEMA_ROOT_ELEMENT + "/" + prop;
 372     }
 373
 374     private final boolean SUBJ_DOC_MODEL = true;
 375     private final boolean OBJ_DOC_MODEL = false;
 376
 377     private DocumentModel getSubjectOrObjectDocModel(
 378                 CoreSessionInterface repoSession,
 379                 DocumentModel relationDocModel,
 380                 boolean fSubject) throws Exception {
 381         ServiceContext<PoxPayloadIn, PoxPayloadOut> ctx = this.getServiceContext();
 382
 383         // Get the document model for the object of the relation.
 384         String commonPartLabel = ctx.getCommonPartLabel();
 385         String csid = "";
 386         String refName = "";
 387         DocumentModel docModel = null;
 388         // FIXME: Currently assumes that the object CSID is valid if present
 389         // in the incoming payload.
 390         try {
 391             csid = (String) relationDocModel.getProperty(commonPartLabel,
 392                         (fSubject?RelationJAXBSchema.SUBJECT_CSID:RelationJAXBSchema.OBJECT_CSID));
 393         } catch (PropertyException pe) {
 394             // Per CSPACE-4468, ignore any property exception here.
 395             // The objectCsid and/or subjectCsid field in a relation record
 396             // can now be null (missing), because a refName value can be
 397             // provided as an alternate identifier.
 398         }
 399         if (Tools.notBlank(csid)) {
 400                 NuxeoRepositoryClientImpl nuxeoRepoClient = (NuxeoRepositoryClientImpl)getRepositoryClient(ctx);
 401             DocumentWrapper<DocumentModel> docWrapper = nuxeoRepoClient.getDocFromCsid(ctx, repoSession, csid);
 402             docModel = docWrapper.getWrappedObject();
 403         } else { //  if (Tools.isBlank(objectCsid)) {
 404             try {
 405                 refName = (String) relationDocModel.getProperty(commonPartLabel,
 406                                 (fSubject?RelationJAXBSchema.SUBJECT_REFNAME:RelationJAXBSchema.OBJECT_REFNAME));
 407                 docModel = NuxeoBasedResource.getDocModelForRefName(ctx, refName, ctx.getResourceMap());
 408             } catch (Exception e) {
 409                 throw new InvalidDocumentException(
 410                         "Relation record must have a CSID or refName to identify the object of the relation.", e);
 411             }
 412         }
 413         if(docModel==null) {
 414                 throw new DocumentNotFoundException("RelationDMH.getSubjectOrObjectDocModel could not find doc with CSID: "
 415                                         +csid+" and/or refName: "+refName );
 416         }
 417         return docModel;
 418     }
 419
 420     private void populateSubjectOrObjectValues(
 421                 DocumentModel relationDocModel,
 422                 DocumentModel subjectOrObjectDocModel,
 423                 boolean fSubject ) {
 424         ServiceContext<PoxPayloadIn, PoxPayloadOut> ctx = this.getServiceContext();
 425
 426         HashMap<String,Object> properties = new HashMap<String,Object>();
 427         try {
 428                 String doctype = subjectOrObjectDocModel.getDocumentType().getName();
 429             doctype = ServiceBindingUtils.getUnqualifiedTenantDocType(doctype);
 430                 properties.put((fSubject?RelationJAXBSchema.SUBJECT_DOCTYPE:RelationJAXBSchema.OBJECT_DOCTYPE),
 431                                                         doctype);
 432
 433                 String csid = (String) subjectOrObjectDocModel.getName();
 434                 properties.put((fSubject?RelationJAXBSchema.SUBJECT_CSID:RelationJAXBSchema.OBJECT_CSID),
 435                                                         csid);
 436
 437                 String uri = (String) subjectOrObjectDocModel.getProperty(CollectionSpaceClient.COLLECTIONSPACE_CORE_SCHEMA,
 438                                 CollectionSpaceClient.COLLECTIONSPACE_CORE_URI);
 439                 properties.put((fSubject?RelationJAXBSchema.SUBJECT_URI:RelationJAXBSchema.OBJECT_URI),
 440                                                         uri);
 441
 442                 /*
 443                 String common_schema = getCommonSchemaNameForDocType(doctype);
 444
 445                 if(common_schema!=null) {
 446                         String refname = (String)subjectOrObjectDocModel.getProperty(common_schema,
 447                                                                                                                         RefName.REFNAME );
 448                     properties.put((fSubject?RelationJAXBSchema.SUBJECT_REFNAME:RelationJAXBSchema.OBJECT_REFNAME),
 449                                 refname);
 450                 }
 451                 */
 452                 String refname = (String)
 453                                 subjectOrObjectDocModel.getProperty(
 454                                                 CollectionSpaceClient.COLLECTIONSPACE_CORE_SCHEMA,
 455                                                 CollectionSpaceClient.COLLECTIONSPACE_CORE_REFNAME);
 456             properties.put((fSubject?
 457                                                 RelationJAXBSchema.SUBJECT_REFNAME
 458                                                 :RelationJAXBSchema.OBJECT_REFNAME),
 459                                         refname);
 460         } catch (ClientException ce) {
 461             throw new RuntimeException(
 462                     "populateSubjectOrObjectValues: Problem fetching field " + ce.getLocalizedMessage());
 463         }
 464
 465         // FIXME: Call below is based solely on Nuxeo API docs; have not yet verified that it correctly updates existing
 466         // property values in the target document model.
 467         try {
 468                 relationDocModel.setProperties(ctx.getCommonPartLabel(), properties);
 469         } catch (ClientException ce) {
 470             throw new RuntimeException(
 471                     "populateSubjectValues: Problem setting fields " + ce.getLocalizedMessage());
 472         }
 473     }
 474
 475     @Override
 476         public boolean supportsWorkflowStates() {
 477                 return true;
 478         }
 479 }