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   1 /**     \r
   2  * RelationUtilsNuxeoImpl.java\r
   3  *\r
   4  * {Purpose of This Class}\r
   5  *\r
   6  * {Other Notes Relating to This Class (Optional)}\r
   7  *\r
   8  * $LastChangedBy: $\r
   9  * $LastChangedRevision: $\r
  10  * $LastChangedDate: $\r
  11  *\r
  12  * This document is a part of the source code and related artifacts\r
  13  * for CollectionSpace, an open source collections management system\r
  14  * for museums and related institutions:\r
  15  *\r
  16  * http://www.collectionspace.org\r
  17  * http://wiki.collectionspace.org\r
  18  *\r
  19  * Copyright © 2009 {Contributing Institution}\r
  20  *\r
  21  * Licensed under the Educational Community License (ECL), Version 2.0.\r
  22  * You may not use this file except in compliance with this License.\r
  23  *\r
  24  * You may obtain a copy of the ECL 2.0 License at\r
  25  * https://source.collectionspace.org/collection-space/LICENSE.txt\r
  26  */\r
  27 package org.collectionspace.services.common.relation.nuxeo;\r
  28 \r
  29 import java.io.IOException;\r
  30 import java.io.Serializable;\r
  31 import java.util.ArrayList;\r
  32 import java.util.List;\r
  33 import java.util.Map;\r
  34 \r
  35 import org.collectionspace.services.common.relation.RelationJAXBSchema;\r
  36 import org.collectionspace.services.common.relation.RelationListItemJAXBSchema;\r
  37 import org.collectionspace.services.common.relation.RelationUtils;\r
  38 \r
  39 import org.collectionspace.services.relation.Relation;\r
  40 import org.collectionspace.services.relation.RelationshipType;\r
  41 import org.collectionspace.services.nuxeo.util.NuxeoUtils;\r
  42 import org.collectionspace.services.common.repository.DocumentException;\r
  43 \r
  44 import org.dom4j.Document;\r
  45 import org.dom4j.Element;\r
  46 import org.dom4j.dom.DOMElement;\r
  47 import org.dom4j.dom.DOMDocument;\r
  48 import org.dom4j.dom.DOMDocumentFactory;\r
  49 //import org.dom4j.DocumentException;\r
  50 \r
  51 import org.nuxeo.common.utils.IdUtils;\r
  52 import org.nuxeo.ecm.core.api.ClientException;\r
  53 import org.nuxeo.ecm.core.api.DocumentModel;\r
  54 import org.nuxeo.ecm.core.api.DocumentModelList;\r
  55 import org.nuxeo.ecm.core.api.model.DocumentPart;\r
  56 import org.nuxeo.ecm.core.api.repository.RepositoryInstance;\r
  57 import org.slf4j.Logger;\r
  58 import org.slf4j.LoggerFactory;\r
  59 //import org.w3c.dom.DOMException;\r
  60 //import org.w3c.dom.Element;\r
  61 \r
  62 /**\r
  63  * The Class RelationUtilsNuxeoImpl.\r
  64  */\r
  65 public class RelationUtilsNuxeoImpl implements RelationUtils {\r
  66         \r
  67         /** The C s_ relatio n_ servic e_ name. */\r
  68         static public String CS_RELATION_SERVICE_NAME = "relations";\r
  69         static public String CS_EMPTY_STRING = "";\r
  70         \r
  71         /** The Constant REL_NUXEO_DOCTYPE. */\r
  72         final public static String REL_NUXEO_DOCTYPE = "Relation";\r
  73         \r
  74         /** The Constant REL_NUXEO_SCHEMA_NAME. */\r
  75         final public static String REL_NUXEO_SCHEMA_NAME = "relation";\r
  76         \r
  77         /** The Constant REL_NUXEO_SCHEMA_ROOT_ELEMENT. */\r
  78         final public static String REL_NUXEO_SCHEMA_ROOT_ELEMENT = "relationtype";\r
  79         \r
  80         /** The Constant REL_NUXEO_DC_TITLE. */\r
  81         final public static String REL_NUXEO_DC_TITLE = "CollectionSpace-Relation";\r
  82         \r
  83         /** The logger. */\r
  84         private static Logger logger = LoggerFactory\r
  85         .getLogger(RelationUtilsNuxeoImpl.class);       \r
  86 \r
  87 \r
  88         /**\r
  89          * Fill relation from doc model.\r
  90          * \r
  91          * @param relation the relation\r
  92          * @param relDocModel the rel doc model\r
  93          * \r
  94          * @throws ClientException the client exception\r
  95          */\r
  96         static public void fillRelationFromDocModel(Relation relation, DocumentModel relDocModel)\r
  97                         throws ClientException {\r
  98                 String xpathRoot = "/" + REL_NUXEO_SCHEMA_ROOT_ELEMENT + "/";\r
  99                 Object valueObject = null;\r
 100 \r
 101                 relation.setCsid(relDocModel.getId());\r
 102 \r
 103                 valueObject = relDocModel.getProperty(REL_NUXEO_SCHEMA_NAME, xpathRoot\r
 104                                 + RelationJAXBSchema.DOCUMENT_ID_1);\r
 105                 relation.setDocumentId1((String) valueObject);\r
 106 \r
 107                 valueObject = relDocModel.getProperty(REL_NUXEO_SCHEMA_NAME, xpathRoot\r
 108                                 + RelationJAXBSchema.DOCUMENT_TYPE_1);\r
 109                 relation.setDocumentType1((String) valueObject);\r
 110 \r
 111                 valueObject = relDocModel.getProperty(REL_NUXEO_SCHEMA_NAME, xpathRoot\r
 112                                 + RelationJAXBSchema.DOCUMENT_ID_2);\r
 113                 relation.setDocumentId2((String) valueObject);\r
 114 \r
 115                 valueObject = relDocModel.getProperty(REL_NUXEO_SCHEMA_NAME, xpathRoot\r
 116                                 + RelationJAXBSchema.DOCUMENT_TYPE_1);\r
 117                 relation.setDocumentType2((String) valueObject);\r
 118 \r
 119                 valueObject = relDocModel.getProperty(REL_NUXEO_SCHEMA_NAME, xpathRoot\r
 120                                 + RelationJAXBSchema.RELATIONSHIP_TYPE);\r
 121                 relation.setRelationshipType(RelationshipType\r
 122                                 .fromValue((String) valueObject));\r
 123 \r
 124                 if (logger.isDebugEnabled() == true) {\r
 125                         System.out.println("vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv");\r
 126                         System.out.println(relation.toString());\r
 127                         System.out.println("^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^");\r
 128                 }\r
 129         }\r
 130 \r
 131         /**\r
 132          * Fill doc model from relation.\r
 133          * \r
 134          * @param p the p\r
 135          * @param relDocModel the rel doc model\r
 136          * \r
 137          * @throws Exception the exception\r
 138          */\r
 139         static public void fillDocModelFromRelation(Relation p, DocumentModel relDocModel)\r
 140                         throws Exception {\r
 141 \r
 142                 // set the DublinCore title (this works)\r
 143                 relDocModel.setPropertyValue("dublincore:title", "default title");\r
 144 \r
 145                 // // set value for <documentType1> element\r
 146                 // try {\r
 147                 // relDocModel.setProperty("relation", "/relationtype/documentId1",\r
 148                 // "docId1");\r
 149                 // } catch (Exception x) {\r
 150                 // x.printStackTrace();\r
 151                 // }\r
 152 \r
 153                 String xpathRoot = "/" + REL_NUXEO_SCHEMA_ROOT_ELEMENT + "/";\r
 154                 if (p.getDocumentId1() != null) {\r
 155                         String property = xpathRoot + RelationJAXBSchema.DOCUMENT_ID_1;\r
 156                         relDocModel.setProperty(REL_NUXEO_SCHEMA_NAME, property, p\r
 157                                         .getDocumentId1());\r
 158                 }\r
 159                 if (p.getDocumentType1() != null) {\r
 160                         String property = xpathRoot + RelationJAXBSchema.DOCUMENT_TYPE_1;\r
 161                         relDocModel.setProperty(REL_NUXEO_SCHEMA_NAME, property, p\r
 162                                         .getDocumentType1());\r
 163                 }\r
 164                 if (p.getDocumentId2() != null) {\r
 165                         String property = xpathRoot + RelationJAXBSchema.DOCUMENT_ID_2;\r
 166                         relDocModel.setProperty(REL_NUXEO_SCHEMA_NAME, property, p\r
 167                                         .getDocumentId2());\r
 168                 }\r
 169                 if (p.getDocumentType2() != null) {\r
 170                         String property = xpathRoot + "/"\r
 171                                         + RelationJAXBSchema.DOCUMENT_TYPE_2;\r
 172                         relDocModel.setProperty(REL_NUXEO_SCHEMA_NAME, property, p\r
 173                                         .getDocumentType2());\r
 174                 }\r
 175 \r
 176                 if (p.getRelationshipType() != null) {\r
 177                         String property = xpathRoot + RelationJAXBSchema.RELATIONSHIP_TYPE;\r
 178                         relDocModel.setProperty(REL_NUXEO_SCHEMA_NAME, property, p\r
 179                                         .getRelationshipType().value());\r
 180                 }\r
 181         }\r
 182         \r
 183         /**\r
 184          * Prints the document model.\r
 185          * \r
 186          * @param documentModel the document model\r
 187          */\r
 188         static public void printDocumentModel(DocumentModel documentModel) {\r
 189                 System.out.println(documentModel);\r
 190         }\r
 191         \r
 192         /**\r
 193          * Describe document model.\r
 194          * \r
 195          * @param docModel the doc model\r
 196          * \r
 197          * @throws Exception the exception\r
 198          */\r
 199         static private void describeDocumentModel(DocumentModel docModel) throws Exception {\r
 200                 String[] schemas = docModel.getDeclaredSchemas();\r
 201                 for (int i = 0; schemas != null && i < schemas.length; i++) {\r
 202                         System.out.println("Schema-" + i + "=" + schemas[i]);\r
 203                 }\r
 204                 \r
 205                 DocumentPart[] parts = docModel.getParts();\r
 206                 Map<String,Serializable> propertyValues = null;\r
 207                 for (int i = 0; parts != null && i < parts.length; i++) {\r
 208                         System.out.println("Part-" + i + " name =" + parts[i].getName());\r
 209                         System.out.println("Part-" + i + " path =" + parts[i].getPath());\r
 210                         System.out.println("Part-" + i + " schema =" + parts[i].getSchema().getName());\r
 211                         propertyValues = parts[i].exportValues();\r
 212                 }\r
 213 \r
 214         }\r
 215 \r
 216         /**\r
 217          * Creates the relationship.\r
 218          * \r
 219          * @param nuxeoRepoSession the nuxeo repo session\r
 220          * @param newRelation the new relation\r
 221          * \r
 222          * @return the document model\r
 223          * \r
 224          * @throws DocumentException the document exception\r
 225          */\r
 226         static public DocumentModel createRelationship(Object nuxeoRepoSession, Relation newRelation)\r
 227                         throws DocumentException {\r
 228                 DocumentModel result = null;\r
 229                 RepositoryInstance repoSession = (RepositoryInstance)nuxeoRepoSession;\r
 230                 \r
 231                 try {\r
 232                         // get the Nuxeo 'Relations' workspace\r
 233                         DocumentModel workspaceModel = NuxeoUtils.getWorkspaceModel(repoSession,\r
 234                                         CS_RELATION_SERVICE_NAME);\r
 235                         \r
 236                 String docType = REL_NUXEO_DOCTYPE;\r
 237                 String id = IdUtils.generateId("New " + docType);\r
 238                 \r
 239                 //create document model\r
 240                 String workspacePath = workspaceModel.getPathAsString();            \r
 241                 DocumentModel newRelDocModel = repoSession.createDocumentModel(workspacePath, id, docType);\r
 242         \r
 243                 newRelation.setCsid(newRelDocModel.getId());\r
 244                 fillDocModelFromRelation(newRelation, newRelDocModel);\r
 245                 \r
 246                 //create document with the new DocumentModel\r
 247                 result = repoSession.createDocument(newRelDocModel);\r
 248                 repoSession.save();\r
 249                 } catch (Exception e) {\r
 250                         e.printStackTrace();\r
 251                         throw new DocumentException(e);\r
 252                 }\r
 253                 \r
 254                 return result;\r
 255         }\r
 256         \r
 257         /* (non-Javadoc)\r
 258          * @see org.collectionspace.services.common.RelationUtils#createRelationship(java.lang.Object, java.lang.String, java.lang.String, java.lang.String)\r
 259          */\r
 260         public Relation createRelationship(Object nuxeoRepoSession, String subjectCsid, String predicate,\r
 261                         String objectCsid) throws DocumentException {\r
 262                 Relation result = null;\r
 263                 RepositoryInstance repoSession = (RepositoryInstance)nuxeoRepoSession;\r
 264                 \r
 265         Relation temp = new Relation();\r
 266         temp.setDocumentId1(subjectCsid);\r
 267         temp.setRelationshipType(null);\r
 268         temp.setDocumentId2(objectCsid);\r
 269         createRelationship(repoSession, temp);\r
 270                 \r
 271                 return result;\r
 272         }\r
 273         \r
 274         /* (non-Javadoc)\r
 275          * @see org.collectionspace.services.common.RelationUtils#getRelationships(java.lang.Object)\r
 276          */\r
 277         public List<Relation> getRelationships(Object nuxeoRepoSession)\r
 278                         throws DocumentException {\r
 279                 List<Relation> result = null;\r
 280                 RepositoryInstance repoSession = (RepositoryInstance)nuxeoRepoSession;\r
 281 \r
 282                 try {\r
 283                         DocumentModel relationWorkspace = NuxeoUtils.getWorkspaceModel(\r
 284                                         repoSession, CS_RELATION_SERVICE_NAME);\r
 285                         DocumentModelList children = repoSession.getChildren(relationWorkspace\r
 286                                         .getRef());\r
 287                         \r
 288                         result = new ArrayList<Relation>();\r
 289                         Relation relation = null;\r
 290                         for (DocumentModel child : children) {\r
 291                                 relation = new Relation();\r
 292                                 fillRelationFromDocModel(relation, child);\r
 293                                 result.add(relation);\r
 294                         }\r
 295                 } catch (Exception e) {\r
 296                         e.printStackTrace();\r
 297                         throw new DocumentException(e);\r
 298                 }\r
 299 \r
 300                 return result;\r
 301         }\r
 302         \r
 303         /* (non-Javadoc)\r
 304          * @see org.collectionspace.services.common.RelationUtils#getRelationships(java.lang.Object, java.lang.String)\r
 305          */\r
 306         public List<Relation> getRelationships(Object nuxeoRepoSession, String csid)\r
 307                         throws DocumentException {\r
 308                 List<Relation> result = null;\r
 309                 RepositoryInstance repoSession = (RepositoryInstance)nuxeoRepoSession;\r
 310                                 \r
 311                 try {\r
 312                         DocumentModel relationWorkspace = NuxeoUtils.getWorkspaceModel(\r
 313                                         repoSession, CS_RELATION_SERVICE_NAME);\r
 314                         DocumentModelList children = repoSession.getChildren(relationWorkspace\r
 315                                         .getRef());\r
 316                         \r
 317                         result = new ArrayList<Relation>();\r
 318                         Relation relation = null;\r
 319                         for (DocumentModel child : children) {\r
 320                                 if ((isSubjectOfRelation(csid, child) == true) ||\r
 321                                                 (isObjectOfRelation(csid, child) == true)) {\r
 322                                         relation = new Relation();\r
 323                                         fillRelationFromDocModel(relation, child);\r
 324                                         result.add(relation);\r
 325                                 }\r
 326                         }\r
 327                 } catch (Exception e) {\r
 328                         e.printStackTrace();\r
 329                         throw new DocumentException(e);\r
 330                 }\r
 331                 \r
 332                 return result;\r
 333         }\r
 334         \r
 335         \r
 336         /* (non-Javadoc)\r
 337          * @see org.collectionspace.services.common.RelationUtils#getRelationships(java.lang.Object, java.lang.String, java.lang.String, java.lang.String)\r
 338          */\r
 339         public List<Relation> getRelationships(Object nuxeoRepoSession,\r
 340                         String subjectCsid, \r
 341                         String predicate, \r
 342                         String objectCsid) throws DocumentException {\r
 343                 List<Relation> result = null;\r
 344                 RepositoryInstance repoSession = (RepositoryInstance)nuxeoRepoSession;\r
 345                 \r
 346                 try {\r
 347                         DocumentModel relationWorkspace = NuxeoUtils.getWorkspaceModel(\r
 348                                         repoSession, CS_RELATION_SERVICE_NAME);\r
 349                         DocumentModelList children = repoSession.getChildren(relationWorkspace\r
 350                                         .getRef());\r
 351                         \r
 352                         result = new ArrayList<Relation>();\r
 353                         Relation relation = null;\r
 354                         for (DocumentModel child : children) {\r
 355                                 if (isQueryMatch(child, subjectCsid, predicate, objectCsid) == true) {\r
 356                                         relation = new Relation();\r
 357                                         fillRelationFromDocModel(relation, child);\r
 358                                         result.add(relation);                   }\r
 359                         }\r
 360                 } catch (Exception e) {\r
 361                         e.printStackTrace();\r
 362                         throw new DocumentException(e);\r
 363                 }\r
 364                 \r
 365                 return result;\r
 366         }\r
 367         \r
 368         public String getQPropertyName(String propertyName) {\r
 369                 return "/" + REL_NUXEO_SCHEMA_ROOT_ELEMENT + "/" + propertyName;\r
 370         }\r
 371                 \r
 372         /**\r
 373          * Checks if is subject of relation.\r
 374          * \r
 375          * @param csid the csid\r
 376          * @param documentModel the document model\r
 377          * \r
 378          * @return true, if is subject of relation\r
 379          * \r
 380          * @throws ClientException the client exception\r
 381          */\r
 382         private boolean isSubjectOfRelation(String csid, DocumentModel documentModel)\r
 383                         throws ClientException {\r
 384                 boolean result = false;\r
 385                 String xpathRoot = "/" + REL_NUXEO_SCHEMA_ROOT_ELEMENT + "/";\r
 386 \r
 387                 Object valueObject = documentModel.getProperty(REL_NUXEO_SCHEMA_NAME, xpathRoot\r
 388                                 + RelationJAXBSchema.DOCUMENT_ID_1);\r
 389                 if (valueObject != null && csid != null) {\r
 390                         String subjectID = (String) valueObject;\r
 391                         result = subjectID.equals(csid);\r
 392                 }\r
 393                 \r
 394                 return result;\r
 395         }\r
 396 \r
 397         /**\r
 398          * Checks if is object of relation.\r
 399          * \r
 400          * @param csid the csid\r
 401          * @param documentModel the document model\r
 402          * \r
 403          * @return true, if is object of relation\r
 404          * \r
 405          * @throws ClientException the client exception\r
 406          */\r
 407         private boolean isObjectOfRelation(String csid, DocumentModel documentModel)\r
 408                         throws ClientException {\r
 409                 boolean result = false;\r
 410                 String xpathRoot = "/" + REL_NUXEO_SCHEMA_ROOT_ELEMENT + "/";\r
 411 \r
 412                 Object valueObject = documentModel.getProperty(REL_NUXEO_SCHEMA_NAME,\r
 413                                 xpathRoot + RelationJAXBSchema.DOCUMENT_ID_2);\r
 414                 if (valueObject != null  && csid != null) {\r
 415                         String subjectID = (String) valueObject;\r
 416                         result = subjectID.equals(csid);\r
 417                 }\r
 418 \r
 419                 return result;\r
 420         }\r
 421         \r
 422         private boolean isPredicateOfRelation(String predicate,\r
 423                         DocumentModel documentModel) throws ClientException {\r
 424                 boolean result = false;\r
 425                 String xpathRoot = "/" + REL_NUXEO_SCHEMA_ROOT_ELEMENT + "/";\r
 426 \r
 427                 Object valueObject = documentModel.getProperty(REL_NUXEO_SCHEMA_NAME,\r
 428                                 xpathRoot + RelationJAXBSchema.RELATIONSHIP_TYPE);\r
 429                 if (valueObject != null  && predicate != null) {\r
 430                         String relationType = (String) valueObject;\r
 431                         result = predicate.equalsIgnoreCase(relationType);\r
 432                 }\r
 433 \r
 434                 return result;\r
 435         }\r
 436 \r
 437         /**\r
 438          * Gets the object ID from of the (Subject-Predicate-Object) relationship.\r
 439          * \r
 440          * @param csid the ID of the 'Subject' (Subject-Predicate-Object)\r
 441          * @param documentModel represents the relation entry.\r
 442          * \r
 443          * @return the object csid of the relationship\r
 444          * \r
 445          * @throws ClientException the client exception\r
 446          */\r
 447         private String getObjectFromSubject(String csid, DocumentModel documentModel)\r
 448                         throws ClientException {\r
 449                 String result = null;\r
 450                 String xpathRoot = "/" + REL_NUXEO_SCHEMA_ROOT_ELEMENT + "/";\r
 451 \r
 452                 Object valueObject = documentModel.getProperty(REL_NUXEO_SCHEMA_NAME,\r
 453                                 xpathRoot + RelationJAXBSchema.DOCUMENT_ID_1);\r
 454                 if (valueObject != null) {\r
 455                         String subjectID = (String) valueObject;\r
 456                         if (subjectID.equals(csid) == true) {\r
 457                                 valueObject = documentModel.getProperty(REL_NUXEO_SCHEMA_NAME,\r
 458                                                 xpathRoot + RelationJAXBSchema.DOCUMENT_ID_2);\r
 459                                 if (valueObject != null) {\r
 460                                         result = (String) valueObject;\r
 461                                 }\r
 462                         }\r
 463                 }\r
 464 \r
 465                 return result;\r
 466         }\r
 467         \r
 468         static public Document getDocument(List<Relation> relationList)\r
 469                         throws DocumentException {\r
 470                 DOMDocumentFactory domfactory = new DOMDocumentFactory();\r
 471                 DOMDocument result = (DOMDocument) domfactory.createDocument();\r
 472 \r
 473                 try {\r
 474                         // setup the root element\r
 475                         DOMElement root = (DOMElement) result\r
 476                                         .createElement(RelationListItemJAXBSchema.REL_ROOT_ELEM_NAME);\r
 477                         result.setRootElement((org.dom4j.Element) root);\r
 478 \r
 479                         // populate the document with child elements\r
 480                         for (Relation child : relationList) {\r
 481                                 DOMElement el = (DOMElement) result.createElement(RelationJAXBSchema.REL_ROOT_ELEM_NAME);\r
 482                                 el.setAttribute(RelationListItemJAXBSchema.CSID, child\r
 483                                                 .getCsid());\r
 484                                 el.setAttribute(RelationListItemJAXBSchema.URI, getRelURL(\r
 485                                                 CS_RELATION_SERVICE_NAME, child.getCsid()));\r
 486 \r
 487                                 if (logger.isDebugEnabled() == true) {\r
 488                                         System.out.println(el.asXML());\r
 489                                 }\r
 490                                 \r
 491                                 root.appendChild(el);\r
 492                         }\r
 493                 } catch (Exception e) {\r
 494                         if (logger.isDebugEnabled()) {\r
 495                                 logger.debug("Caught exception ", e);\r
 496                         }\r
 497                         throw new DocumentException(e);\r
 498                 }\r
 499 \r
 500                 if (logger.isDebugEnabled() == true) {\r
 501                         System.out.println(result.asXML());\r
 502                 }\r
 503 \r
 504                 return result;\r
 505         }\r
 506         \r
 507         private boolean isQueryMatch(DocumentModel documentModel,\r
 508                         String subjectCsid,\r
 509                         String predicate,\r
 510                         String objectCsid) throws ClientException {\r
 511                 boolean result = true;\r
 512                 \r
 513                 block: {\r
 514                         if (subjectCsid != null) {\r
 515                                 if (isSubjectOfRelation(subjectCsid, documentModel) == false) {\r
 516                                         result = false;\r
 517                                         break block;\r
 518                                 }\r
 519                         }\r
 520                         if (predicate != null) {\r
 521                                 if (isPredicateOfRelation(predicate, documentModel) == false) {\r
 522                                         result = false;\r
 523                                         break block;\r
 524                                 }\r
 525                         }\r
 526                         if (objectCsid != null) {\r
 527                                 if (isObjectOfRelation(objectCsid, documentModel) == false) {\r
 528                                         result = false;\r
 529                                         break block;\r
 530                                 }\r
 531                         }\r
 532                 }\r
 533                 \r
 534                 return result;\r
 535         }\r
 536         \r
 537     private static String getRelURL(String repo, String uuid) {\r
 538         return '/' + repo + '/' + uuid;\r
 539     }   \r
 540         \r
 541 }\r