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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.nuxeo.client.java;
  25
  26 import java.lang.reflect.Method;
  27 import java.util.ArrayList;
  28 import java.util.GregorianCalendar;
  29 import java.util.HashMap;
  30 import java.util.Iterator;
  31 import java.util.List;
  32
  33 import javax.ws.rs.core.MultivaluedMap;
  34
  35 import org.collectionspace.services.client.CollectionSpaceClient;
  36 import org.collectionspace.services.client.IQueryManager;
  37 import org.collectionspace.services.client.IRelationsManager;
  38 import org.collectionspace.services.client.PoxPayload;
  39 import org.collectionspace.services.client.PoxPayloadIn;
  40 import org.collectionspace.services.client.PoxPayloadOut;
  41 import org.collectionspace.services.client.XmlTools;
  42 import org.collectionspace.services.client.workflow.WorkflowClient;
  43 import org.collectionspace.services.common.ReflectionMapper;
  44 import org.collectionspace.services.common.api.GregorianCalendarDateTimeUtils;
  45 import org.collectionspace.services.common.api.Tools;
  46 import org.collectionspace.services.common.config.ServiceConfigUtils;
  47 import org.collectionspace.services.common.context.AbstractServiceContextImpl;
  48 import org.collectionspace.services.common.context.ServiceContext;
  49 import org.collectionspace.services.common.document.DocumentException;
  50 import org.collectionspace.services.common.document.DocumentWrapper;
  51 import org.collectionspace.services.common.query.QueryContext;
  52 import org.collectionspace.services.common.relation.nuxeo.RelationsUtils;
  53 import org.collectionspace.services.config.service.DocHandlerParams;
  54 import org.collectionspace.services.config.service.ListResultField;
  55 import org.collectionspace.services.jaxb.AbstractCommonList;
  56 import org.collectionspace.services.nuxeo.client.java.CommonList;
  57 import org.collectionspace.services.nuxeo.client.java.RemoteDocumentModelHandlerImpl;
  58 import org.collectionspace.services.nuxeo.util.NuxeoUtils;
  59 import org.dom4j.Document;
  60 import org.nuxeo.ecm.core.api.DocumentModel;
  61 import org.nuxeo.ecm.core.api.DocumentModelList;
  62 import org.slf4j.Logger;
  63 import org.slf4j.LoggerFactory;
  64
  65 /**
  66  * This class is generified by the marker type T,
  67  * where T is expected to map to something like BlobCommon, MediaCommon, ObjectexitCommon, etc.,
  68  * and so on for every JAXB-generated schema class.
  69  *
  70  * User: laramie
  71  * $LastChangedRevision: $
  72  * $LastChangedDate: $
  73  *
  74  */
  75 public abstract class NuxeoDocumentModelHandler<T> extends RemoteDocumentModelHandlerImpl<T, AbstractCommonList> {
  76
  77         /** The logger. */
  78         private final Logger logger = LoggerFactory.getLogger(this.getClass());
  79
  80         private AbstractCommonList commonList;
  81
  82         protected static final int NUM_STANDARD_LIST_RESULT_FIELDS = 5;
  83         protected static final String STANDARD_LIST_CSID_FIELD = "csid";
  84         protected static final String STANDARD_LIST_URI_FIELD = CollectionSpaceClient.COLLECTIONSPACE_CORE_URI;
  85         protected static final String STANDARD_LIST_REFNAME_FIELD = CollectionSpaceClient.COLLECTIONSPACE_CORE_REFNAME;
  86         protected static final String STANDARD_LIST_UPDATED_AT_FIELD = CollectionSpaceClient.COLLECTIONSPACE_CORE_UPDATED_AT;
  87         protected static final String STANDARD_LIST_WORKFLOW_FIELD = CollectionSpaceClient.COLLECTIONSPACE_CORE_WORKFLOWSTATE;
  88         protected static final String STANDARD_LIST_MARK_RT_FIELD = "related";
  89
  90         @Override
  91         public AbstractCommonList getCommonPartList() {
  92                 return commonList;
  93         }
  94
  95         @Override
  96         public void setCommonPartList(AbstractCommonList aCommonList) {
  97                 this.commonList = aCommonList;
  98         }
  99
 100         private T commonPart;
 101
 102         @Override
 103         public T getCommonPart() {
 104                 return (T) commonPart;
 105         }
 106
 107         @Override
 108         public void setCommonPart(T commonPart) {
 109                 this.commonPart = commonPart;
 110         }
 111
 112     /**
 113      * The entity type expected from the JAX-RS Response object.  By default it is of type String.  Child classes
 114      * can override this if they need to.
 115      */
 116     protected Class<String> getEntityResponseType() {
 117         return String.class;
 118     }
 119
 120     protected String getWorkflowState(PoxPayload payload) {
 121         String result = null;
 122
 123                 Document document = payload.getDOMDocument();
 124                 result = XmlTools.getElementValue(document, "//" + WorkflowClient.WORKFLOWSTATE_XML_ELEMENT_NAME);
 125
 126                 return result;
 127     }
 128
 129     protected Long getRevision(PoxPayload payload) {
 130         Long result = null;
 131
 132                 Document document = payload.getDOMDocument();
 133                 String xmlRev = XmlTools.getElementValue(document, "//rev");
 134                 result = Long.valueOf(xmlRev);
 135
 136                 return result;
 137     }
 138
 139     protected List getItemList(PoxPayloadIn payloadIn) {
 140         List result = null;
 141
 142                 Document document = payloadIn.getDOMDocument();
 143                 result = XmlTools.getElementNodes(document, "//list-item");
 144
 145                 return result;
 146     }
 147
 148         /**
 149          * Subclass DocHandlers may override this method to control exact creation of the common list.
 150          * This class instantiates an AbstractCommonList from the classname returned by getDocHandlerParams().AbstractCommonListClassname.
 151          *
 152          * @return
 153          * @throws Exception
 154          */
 155         public AbstractCommonList createAbstractCommonListImpl() throws Exception {
 156                 // String classname = this.commonList.getClass().getName();
 157                 ServiceContext<PoxPayloadIn, PoxPayloadOut> ctx = this.getServiceContext();
 158                 String classname = ServiceConfigUtils.getDocHandlerParams(ctx).getAbstractCommonListClassname();
 159                 if (classname == null) {
 160                         throw new Exception(
 161                                         "in createAbstractCommonListImpl. getDocHandlerParams().getAbstractCommonListClassname() is null");
 162                 }
 163                 classname = classname.trim();
 164                 return (AbstractCommonList) (ReflectionMapper.instantiate(classname));
 165         }
 166
 167         /** DocHandlerBase calls this method with the CSID as id */
 168         public Object createItemForCommonList(DocumentModel docModel, String label, String id) throws Exception {
 169                 ServiceContext<PoxPayloadIn, PoxPayloadOut> ctx = this.getServiceContext();
 170                 return createItemForCommonList(ServiceConfigUtils.getDocHandlerParams(ctx).getCommonListItemClassname(),
 171                                 docModel, label, id, true);
 172         }
 173
 174         public String getSummaryFields(AbstractCommonList theCommonList) throws DocumentException {
 175                 ServiceContext<PoxPayloadIn, PoxPayloadOut> ctx = this.getServiceContext();
 176                 return ServiceConfigUtils.getDocHandlerParams(ctx).getSummaryFields();
 177         }
 178
 179         public void setListItemArrayExtended(boolean isExtended) throws DocumentException {
 180                 ServiceContext<PoxPayloadIn, PoxPayloadOut> ctx = this.getServiceContext();
 181                 ServiceConfigUtils.getDocHandlerParams(ctx).getListResultsFields().setExtended(isExtended);
 182         }
 183
 184         public boolean isListItemArrayExtended() throws DocumentException {
 185                 ServiceContext<PoxPayloadIn, PoxPayloadOut> ctx = this.getServiceContext();
 186                 return ServiceConfigUtils.getDocHandlerParams(ctx).getListResultsFields().isExtended();
 187         }
 188
 189         public List<ListResultField> getListItemsArray() throws DocumentException {
 190                 ServiceContext<PoxPayloadIn, PoxPayloadOut> ctx = this.getServiceContext();
 191                 return ServiceConfigUtils.getDocHandlerParams(ctx).getListResultsFields().getListResultField();
 192         }
 193
 194         @Override
 195         public T extractCommonPart(DocumentWrapper<DocumentModel> wrapDoc) throws Exception {
 196                 throw new UnsupportedOperationException();
 197         }
 198
 199         @Override
 200         public void fillCommonPart(T objectexitObject, DocumentWrapper<DocumentModel> wrapDoc) throws Exception {
 201                 throw new UnsupportedOperationException();
 202         }
 203
 204         protected static String getRefname(DocumentModel docModel) throws Exception {
 205                 String result = (String) docModel.getProperty(CollectionSpaceClient.COLLECTIONSPACE_CORE_SCHEMA,
 206                                 CollectionSpaceClient.COLLECTIONSPACE_CORE_REFNAME);
 207                 return result;
 208         }
 209
 210         public static String getUpdatedAtAsString(DocumentModel docModel) throws Exception {
 211                 GregorianCalendar cal = (GregorianCalendar) docModel.getProperty(
 212                                 CollectionSpaceClient.COLLECTIONSPACE_CORE_SCHEMA,
 213                                 CollectionSpaceClient.COLLECTIONSPACE_CORE_UPDATED_AT);
 214                 String updatedAt = GregorianCalendarDateTimeUtils.formatAsISO8601Timestamp(cal);
 215                 return updatedAt;
 216         }
 217
 218         @Override
 219         public AbstractCommonList extractCommonPartList(DocumentWrapper<DocumentModelList> wrapDoc) throws Exception {
 220                 CommonList commonList = new CommonList();
 221                 String markRtSbj = null;
 222                 CoreSessionInterface repoSession = null;
 223                 RepositoryClientImpl repoClient = null;
 224                 boolean releaseRepoSession = false;
 225
 226                 AbstractServiceContextImpl ctx = (AbstractServiceContextImpl) getServiceContext();
 227                 MultivaluedMap<String, String> queryParams = getServiceContext().getQueryParams();
 228                 markRtSbj = queryParams.getFirst(IQueryManager.MARK_RELATED_TO_CSID_AS_SUBJECT);
 229                 if (markRtSbj != null && markRtSbj.isEmpty())
 230                         markRtSbj = null;
 231
 232                 try {
 233                         if (markRtSbj != null) {
 234                                 repoClient = (RepositoryClientImpl) this.getRepositoryClient(ctx);
 235                                 RepositoryClientImpl nuxeoRepoClient = (RepositoryClientImpl) repoClient;
 236                                 repoSession = this.getRepositorySession();
 237                                 if (repoSession == null) {
 238                                         repoSession = repoClient.getRepositorySession(ctx);
 239                                         releaseRepoSession = true;
 240                                 }
 241                         }
 242
 243                         String commonSchema = getServiceContext().getCommonPartLabel();
 244                         extractPagingInfo(commonList, wrapDoc);
 245                         List<ListResultField> resultsFields = getListItemsArray();
 246                         int nFields = resultsFields.size() + NUM_STANDARD_LIST_RESULT_FIELDS;
 247                         int baseFields = NUM_STANDARD_LIST_RESULT_FIELDS;
 248                         if (markRtSbj != null) {
 249                                 nFields++;
 250                                 baseFields++;
 251                         }
 252
 253                         String fields[] = new String[nFields]; // REM - Why can't this just be a static array defined once at the top? Then there'd be no need for these hardcoded "[x]" statements and no need for NUM_STANDARD_LIST_RESULT_FIELDS constant as well.
 254                         fields[0] = STANDARD_LIST_CSID_FIELD;
 255                         fields[1] = STANDARD_LIST_URI_FIELD;
 256                         fields[2] = STANDARD_LIST_REFNAME_FIELD;
 257                         fields[3] = STANDARD_LIST_UPDATED_AT_FIELD;
 258                         fields[4] = STANDARD_LIST_WORKFLOW_FIELD;
 259
 260                         if (markRtSbj != null) {
 261                                 fields[5] = STANDARD_LIST_MARK_RT_FIELD;
 262                         }
 263
 264                         for (int i = baseFields; i < nFields; i++) {
 265                                 ListResultField field = resultsFields.get(i - baseFields);
 266                                 fields[i] = field.getElement();
 267                         }
 268                         commonList.setFieldsReturned(fields);
 269                         Iterator<DocumentModel> iter = wrapDoc.getWrappedObject().iterator();
 270                         HashMap<String, Object> item = new HashMap<String, Object>();
 271                         while (iter.hasNext()) {
 272                                 DocumentModel docModel = iter.next();
 273                                 String id = NuxeoUtils.getCsid(docModel);
 274                                 item.put(STANDARD_LIST_CSID_FIELD, id);
 275                                 if (markRtSbj != null) {
 276                                         String relationClause = RelationsUtils.buildWhereClause(markRtSbj, null, null, id, null, null);
 277                                         String whereClause = relationClause + IQueryManager.SEARCH_QUALIFIER_AND
 278                                                         + NuxeoUtils.buildWorkflowNotDeletedWhereClause();
 279                                         QueryContext queryContext = new QueryContext(ctx, whereClause);
 280                                         queryContext.setDocType(IRelationsManager.DOC_TYPE);
 281                                         String query = NuxeoUtils.buildNXQLQuery(queryContext);
 282                                         // Search for 1 relation that matches. 1 is enough to fail
 283                                         // the filter
 284                                         DocumentModelList docList = repoSession.query(query, null, 1, 0, false);
 285                                         item.put(STANDARD_LIST_MARK_RT_FIELD, docList.isEmpty() ? "false" : "true");
 286                                 }
 287                                 String uri = getUri(docModel);
 288                                 item.put(STANDARD_LIST_URI_FIELD, uri);
 289                                 item.put(STANDARD_LIST_REFNAME_FIELD, getRefname(docModel));
 290                                 item.put(STANDARD_LIST_UPDATED_AT_FIELD, getUpdatedAtAsString(docModel));
 291                                 item.put(STANDARD_LIST_WORKFLOW_FIELD, docModel.getCurrentLifeCycleState());
 292
 293                                 for (ListResultField field : resultsFields) {
 294                                         String schema = field.getSchema();
 295                                         if (schema == null || schema.trim().isEmpty()) {
 296                                                 schema = commonSchema;
 297                                         }
 298                                         Object value = getListResultValue(docModel, schema, field);
 299                                         if (value != null && value instanceof String) { // If it is String that is either null or empty, we set our value to null
 300                                                 String strValue = (String) value;
 301                                                 if (strValue.trim().isEmpty() == true) {
 302                                                         value = null; // We found an "empty" string value, so just set the value to null so we don't return anything.
 303                                                 }
 304                                         }
 305                                         if (value != null) {
 306                                                 item.put(field.getElement(), value);
 307                                         }
 308                                 }
 309                                 commonList.addItem(item);
 310                                 item.clear();
 311                         }
 312                 } catch (Exception e) {
 313                         if (logger.isDebugEnabled()) {
 314                                 logger.debug("Caught exception ", e);
 315                         }
 316                         throw new DocumentException(e);
 317                 } finally {
 318                         // If we got/aquired a new session then we're responsible for releasing it.
 319                         if (releaseRepoSession && repoSession != null) {
 320                                 repoClient.releaseRepositorySession(ctx, repoSession);
 321                         }
 322                 }
 323
 324                 return commonList;
 325         }
 326
 327         // TODO - get rid of this if we can - appears to be unused.
 328         @Override
 329         public String getQProperty(String prop) throws DocumentException {
 330                 ServiceContext ctx = this.getServiceContext();
 331                 return ServiceConfigUtils.getDocHandlerParams(ctx).getSchemaName() + ":" + prop;
 332         }
 333
 334         // ============= dublin core handling =======================================
 335
 336         @Override
 337         public void fillAllParts(DocumentWrapper<DocumentModel> wrapDoc, Action action) throws Exception {
 338                 super.fillAllParts(wrapDoc, action);
 339                 fillDublinCoreObject(wrapDoc);
 340         }
 341
 342         /**
 343          * Fill dublin core object, but only if there are document handler parameters in the service
 344          * bindings.
 345          *
 346          * @param wrapDoc
 347          *            the wrap doc
 348          * @throws Exception
 349          *             the exception
 350          */
 351         // TODO - Remove this?
 352         // This look like it is never used in a sensible way. It just stuffs a static
 353         // String that matches the service name into a bogus field.
 354         protected void fillDublinCoreObject(DocumentWrapper<DocumentModel> wrapDoc) throws Exception {
 355                 DocHandlerParams.Params docHandlerParams = null;
 356                 try {
 357                         docHandlerParams = ServiceConfigUtils.getDocHandlerParams(getServiceContext());
 358                 } catch (Exception e) {
 359                         logger.warn(e.getMessage());
 360                 }
 361
 362                 if (docHandlerParams != null) {
 363                         String title = docHandlerParams.getDublinCoreTitle();
 364                         if (Tools.isEmpty(title) == false) {
 365                                 DocumentModel docModel = wrapDoc.getWrappedObject();
 366                                 docModel.setPropertyValue("dublincore:title", title);
 367                         }
 368                 }
 369         }
 370
 371         // ================== UTILITY METHODS ================================================
 372         public static ReflectionMapper.STATUS callPropertySetterWithXPathValue(DocumentModel docModel, Object listItem,
 373                         String setterName, String schema, String xpath) throws Exception {
 374                 // Object prop = docModel.getProperty(label, elementName);
 375                 String value = (String) NuxeoUtils.getXPathValue(docModel, schema, xpath);
 376                 return ReflectionMapper.callSetter(listItem, setterName, value);
 377         }
 378
 379         public static ReflectionMapper.STATUS callSimplePropertySetter(Object target, String name, Object arg) {
 380                 return ReflectionMapper.callSetter(target, name, arg);
 381         }
 382
 383         /**
 384          * @param commonListClassname
 385          *            is a package-qualified java classname, including inner class $ notation, such as
 386          *            "org.collectionspace.services.objectexit.ObjectexitCommonList$ObjectexitListItem".
 387          * @param includeStdFields
 388          *            set to true to have the method set Uri and Csid automatically, based on id param.
 389          */
 390         public Object createItemForCommonList(String commonListClassname, DocumentModel docModel, String schema, String id,
 391                         boolean includeStdFields) throws Exception {
 392                 // createItemForCommonList(docModel, label, id);
 393                 Object item = ReflectionMapper.instantiate(commonListClassname);
 394                 List<ListResultField> resultsFields = getListItemsArray();
 395                 for (ListResultField field : resultsFields) {
 396                         callPropertySetterWithXPathValue(docModel, item, field.getSetter(), schema, field.getXpath());
 397                 }
 398                 if (includeStdFields) {
 399                         callSimplePropertySetter(item, "setCsid", id);
 400                         callSimplePropertySetter(item, "setUri", getServiceContextPath() + id);
 401                 }
 402
 403                 return item;
 404         }
 405
 406         /**
 407          * Subclasses should override this method if they don't want to automatically
 408          * call List createItemsList(AbstractCommonList commonList, String listItemMethodName)
 409          * which will use introspection to create a summary list, and will find the primary
 410          * field for you if specified.
 411          */
 412         public List createItemsList(AbstractCommonList commonList) throws Exception {
 413                 ServiceContext<PoxPayloadIn, PoxPayloadOut> ctx = this.getServiceContext();
 414                 return createItemsList(commonList, ServiceConfigUtils.getDocHandlerParams(ctx).getListResultsItemMethodName());
 415         }
 416
 417         /** e.g. createItemsList(commonList, "getObjectexitListItem" */
 418         public List createItemsList(AbstractCommonList commonList, String listItemMethodName) throws Exception {
 419                 Class commonListClass = commonList.getClass();
 420                 Class[] types = new Class[] {};
 421                 try {
 422                         Method m = commonListClass.getMethod(listItemMethodName, types);
 423                         return (List) (ReflectionMapper.fireGetMethod(m, commonList));
 424                 } catch (NoSuchMethodException nsm) {
 425                         return new ArrayList();
 426                 }
 427         }
 428
 429 }