bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/genericrelation/DependenciesRelation.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.db.layer0.genericrelation;\r
  13 \r
  14 import java.util.ArrayList;\r
  15 import java.util.Arrays;\r
  16 import java.util.Collection;\r
  17 import java.util.Collections;\r
  18 import java.util.HashSet;\r
  19 import java.util.List;\r
  20 import java.util.Map;\r
  21 import java.util.UUID;\r
  22 \r
  23 import org.simantics.databoard.Bindings;\r
  24 import org.simantics.databoard.util.ObjectUtils;\r
  25 import org.simantics.datatypes.literal.GUID;\r
  26 import org.simantics.db.AsyncReadGraph;\r
  27 import org.simantics.db.ChangeSet;\r
  28 import org.simantics.db.ChangeSet.StatementChange;\r
  29 import org.simantics.db.MetadataI;\r
  30 import org.simantics.db.ReadGraph;\r
  31 import org.simantics.db.RequestProcessor;\r
  32 import org.simantics.db.Resource;\r
  33 import org.simantics.db.Session;\r
  34 import org.simantics.db.Statement;\r
  35 import org.simantics.db.WriteGraph;\r
  36 import org.simantics.db.common.Indexing;\r
  37 import org.simantics.db.common.changeset.GenericChangeListener;\r
  38 import org.simantics.db.common.request.IndexRoot;\r
  39 import org.simantics.db.common.request.ReadRequest;\r
  40 import org.simantics.db.common.request.SuperTypeString;\r
  41 import org.simantics.db.common.request.TypeString;\r
  42 import org.simantics.db.common.request.UnaryRead;\r
  43 import org.simantics.db.common.utils.Logger;\r
  44 import org.simantics.db.common.utils.NameUtils;\r
  45 import org.simantics.db.event.ChangeListener;\r
  46 import org.simantics.db.exception.DatabaseException;\r
  47 import org.simantics.db.layer0.adapter.GenericRelation;\r
  48 import org.simantics.db.layer0.adapter.GenericRelationIndex;\r
  49 import org.simantics.db.layer0.genericrelation.DependencyChanges.Change;\r
  50 import org.simantics.db.layer0.genericrelation.DependencyChanges.ComponentAddition;\r
  51 import org.simantics.db.layer0.genericrelation.DependencyChanges.ComponentModification;\r
  52 import org.simantics.db.layer0.genericrelation.DependencyChanges.ComponentRemoval;\r
  53 import org.simantics.db.layer0.genericrelation.DependencyChanges.LinkChange;\r
  54 import org.simantics.db.procedure.AsyncContextMultiProcedure;\r
  55 import org.simantics.db.procedure.AsyncContextProcedure;\r
  56 import org.simantics.db.service.CollectionSupport;\r
  57 import org.simantics.db.service.DirectQuerySupport;\r
  58 import org.simantics.db.service.GraphChangeListenerSupport;\r
  59 import org.simantics.db.service.ManagementSupport;\r
  60 import org.simantics.db.service.SerialisationSupport;\r
  61 import org.simantics.layer0.Layer0;\r
  62 import org.simantics.operation.Layer0X;\r
  63 import org.simantics.utils.datastructures.Pair;\r
  64 import org.simantics.utils.logging.TimeLogger;\r
  65 \r
  66 public class DependenciesRelation extends UnsupportedRelation implements GenericRelationIndex {\r
  67 \r
  68         private static final boolean DEBUG = false;\r
  69         static final boolean DEBUG_LISTENERS = false;\r
  70         private static final boolean PROFILE = false;\r
  71 \r
  72         @SuppressWarnings("unchecked")\r
  73         private final static Pair<String, String>[] fields = new Pair[] {\r
  74                 Pair.make(Dependencies.FIELD_MODEL, "Long"),\r
  75                 Pair.make(Dependencies.FIELD_PARENT, "Long"),\r
  76                 Pair.make(Dependencies.FIELD_RESOURCE, "Long"),\r
  77                 Pair.make(Dependencies.FIELD_NAME, "String"),\r
  78                 Pair.make(Dependencies.FIELD_TYPES, "Text"),\r
  79                 Pair.make(Dependencies.FIELD_GUID, "Text")\r
  80         };\r
  81 \r
  82         final Resource resource;\r
  83 \r
  84         public DependenciesRelation(ReadGraph graph, Resource resource) {\r
  85                 this.resource = resource;\r
  86                 synchronized(this) {\r
  87                         Session session = graph.getSession();\r
  88                         DependenciesListenerStore store = session.peekService(DependenciesListenerStore.class);\r
  89                         if(store == null) session.registerService(DependenciesListenerStore.class, new DependenciesListenerStore());\r
  90                 }\r
  91         }\r
  92 \r
  93         class Process {\r
  94 \r
  95                 final ArrayList<Entry> result = new ArrayList<Entry>();\r
  96                 final AsyncContextMultiProcedure<Resource, Resource> structure;\r
  97                 final AsyncContextProcedure<Entry, String> names;\r
  98                 final AsyncContextProcedure<Entry, Resource> type;\r
  99 \r
 100                 Process(ReadGraph graph, final Resource resource) throws DatabaseException {\r
 101 \r
 102                         final Layer0 L0 = Layer0.getInstance(graph);\r
 103                         final DirectQuerySupport dqs = graph.getService(DirectQuerySupport.class);\r
 104                         final CollectionSupport cs = graph.getService(CollectionSupport.class);\r
 105 \r
 106                         names = dqs.compilePossibleRelatedValue(graph, L0.HasName, new AsyncContextProcedure<Entry, String>() {\r
 107 \r
 108                                 @Override\r
 109                                 public void execute(AsyncReadGraph graph, Entry entry, String name) {\r
 110                                         entry.name = name;\r
 111                                 }\r
 112 \r
 113                                 @Override\r
 114                                 public void exception(AsyncReadGraph graph, Throwable throwable) {\r
 115                                         Logger.defaultLogError(throwable);\r
 116                                 }\r
 117 \r
 118                         });\r
 119 \r
 120                         type = new AsyncContextProcedure<Entry, Resource>() {\r
 121 \r
 122                                 @Override\r
 123                                 public void execute(AsyncReadGraph graph, Entry entry, Resource type) {\r
 124                                         entry.principalType = type;\r
 125                                 }\r
 126 \r
 127                                 @Override\r
 128                                 public void exception(AsyncReadGraph graph, Throwable throwable) {\r
 129                                         Logger.defaultLogError(throwable);\r
 130                                 }\r
 131 \r
 132                         };\r
 133 \r
 134                         structure = dqs.compileForEachObject(graph, L0.ConsistsOf, new AsyncContextMultiProcedure<Resource, Resource>() {\r
 135 \r
 136                                 @Override\r
 137                                 public void execute(AsyncReadGraph graph, Resource parent, Resource child) {\r
 138                                         // WORKAROUND: don't browse virtual child resources\r
 139                                         if(!child.isPersistent()) return;\r
 140                                         Entry entry = new Entry(parent, child, "", "", "");\r
 141                                         result.add(entry);\r
 142                                         dqs.forEachObjectCompiled(graph, child, child, structure);\r
 143                                         dqs.forPossibleRelatedValueCompiled(graph, child, entry, names);\r
 144                                         dqs.forPossibleDirectType(graph, child, entry, type);\r
 145                                 }\r
 146 \r
 147                                 @Override\r
 148                                 public void finished(AsyncReadGraph graph) {\r
 149                                 }\r
 150 \r
 151                                 @Override\r
 152                                 public void exception(AsyncReadGraph graph, Throwable throwable) {\r
 153                                         Logger.defaultLogError(throwable);\r
 154                                 }\r
 155 \r
 156                         });\r
 157 \r
 158                         graph.syncRequest(new ReadRequest() {\r
 159 \r
 160                                 @Override\r
 161                                 public void run(ReadGraph graph) throws DatabaseException {\r
 162                                         dqs.forEachObjectCompiled(graph, resource, resource, structure);\r
 163                                 }\r
 164 \r
 165                         });\r
 166 \r
 167             Map<Resource, String> typeStrings = cs.createMap(String.class);\r
 168                         for(Entry e : result) {\r
 169                                 if(e.principalType != null) {\r
 170                                     String typeString = typeStrings.get(e.principalType);\r
 171                                     if(typeString == null) {\r
 172                                         typeString = graph.syncRequest(new SuperTypeString(e.principalType));\r
 173                                         if (typeString.isEmpty()) {\r
 174                                             Logger.defaultLogError(new DatabaseException("No name for type " + NameUtils.getURIOrSafeNameInternal(graph, e.resource) + " (" + e.resource + ")"));\r
 175                                         }\r
 176                                         typeStrings.put(e.principalType, typeString);\r
 177                                     }\r
 178                                     e.types = typeString;\r
 179                                 } else {\r
 180                                     e.types = graph.syncRequest(new TypeString(L0, graph.getTypes(e.resource)));\r
 181                                 }\r
 182                                 GUID id = graph.getPossibleRelatedValue(e.resource, L0.identifier, GUID.BINDING);\r
 183                                 if(id != null)\r
 184                                         e.id = id.indexString();\r
 185                                 else \r
 186                                         e.id = "";\r
 187                         }\r
 188 \r
 189                         //SessionGarbageCollection.gc(null, graph.getSession(), false, null);\r
 190                         \r
 191                 }\r
 192 \r
 193         }\r
 194 \r
 195         public ArrayList<Entry> find(ReadGraph graph, final Resource model) throws DatabaseException {\r
 196                 return new Process(graph, model).result;\r
 197         }\r
 198 \r
 199         @Override\r
 200         public GenericRelation select(String bindingPattern, Object[] constants) {\r
 201                 checkSelectionArguments(bindingPattern, constants, new String[] { Dependencies.getBindingPattern() });\r
 202                 final long subjectId = (Long)constants[0];\r
 203                 return new UnsupportedRelation() {\r
 204 \r
 205                         @Override\r
 206                         public boolean isRealizable() {\r
 207                                 return true;\r
 208                         }\r
 209 \r
 210                         @Override\r
 211                         final public List<Object[]> realize(ReadGraph graph) throws DatabaseException {\r
 212 \r
 213                                 long time = System.nanoTime();\r
 214 \r
 215                 SerialisationSupport ss = graph.getService(SerialisationSupport.class);\r
 216 \r
 217                                 Resource subject = ss.getResource(subjectId); \r
 218                                 \r
 219                                 Collection<Entry> entries = find(graph, subject);\r
 220 \r
 221                                 long time2 = System.nanoTime();\r
 222 \r
 223                                 if (PROFILE)\r
 224                                         System.out.println("Found " + entries.size() + " dependencies in " + 1e-6 * (time2 - time) + "ms for " + graph.getPossibleURI(subject) + ".");\r
 225 \r
 226                                 ArrayList<Object[]> result = new ArrayList<Object[]>();\r
 227                                 for (Entry entry : entries) {\r
 228                                         result.add(new Object[] { ss.getRandomAccessId(entry.parent), ss.getRandomAccessId(entry.resource), entry.name, entry.types, entry.id });\r
 229                                 }\r
 230                                 return result;\r
 231 \r
 232                         }\r
 233 \r
 234                 };\r
 235         }\r
 236 \r
 237         @Override\r
 238         public Pair<String, String>[] getFields() {\r
 239                 return fields;\r
 240         }\r
 241 \r
 242         @Override\r
 243         public List<Map<String, Object>> query(RequestProcessor session, String search, String bindingPattern, Object[] constants, int maxResultCount) {\r
 244                 if(!Dependencies.getBindingPattern().equals(bindingPattern)) throw new IllegalArgumentException("DependenciesRelation supports indexing only with 'bfffff'");\r
 245                 IndexedRelations indexer = session.getService(IndexedRelations.class);\r
 246                 return indexer.query(null, search, session, resource, (Resource)constants[0], maxResultCount);\r
 247         }\r
 248         \r
 249         @Override\r
 250         public List<Resource> queryResources(RequestProcessor session, String search, String bindingPattern, Object[] constants, int maxResultCount) {\r
 251                 if(!Dependencies.getBindingPattern().equals(bindingPattern)) throw new IllegalArgumentException("DependenciesRelation supports indexing only with 'bfffff'");\r
 252                 IndexedRelations indexer = session.getService(IndexedRelations.class);\r
 253                 return indexer.queryResources(null, search, session, resource, (Resource)constants[0], maxResultCount);\r
 254         }\r
 255 \r
 256         @Override\r
 257         public List<Map<String, Object>> list(RequestProcessor session, String bindingPattern, Object[] constants, int maxResultCount) {\r
 258                 if(!Dependencies.getBindingPattern().equals(bindingPattern)) throw new IllegalArgumentException("DependenciesRelation supports indexing only with 'bfffff'");\r
 259                 IndexedRelations indexer = session.getService(IndexedRelations.class);\r
 260                 return indexer.query(null, null, session, resource, (Resource)constants[0], maxResultCount);\r
 261         }\r
 262 \r
 263         public static class DependencyChangesRequest extends UnaryRead<ChangeSet, DependencyChanges> {\r
 264 \r
 265                 @SuppressWarnings("unused")\r
 266                 final private static boolean LOG = false;\r
 267 \r
 268                 public DependencyChangesRequest(ChangeSet parameter) {\r
 269                         super(parameter);\r
 270                 }\r
 271 \r
 272                 @Override\r
 273                 public DependencyChanges perform(ReadGraph graph) throws DatabaseException {\r
 274 \r
 275                         DependencyChangesWriter w = new DependencyChangesWriter(graph);\r
 276                         Layer0 l0 = w.l0;\r
 277                         Resource changeInformation = graph.getPossibleResource("http://www.simantics.org/Modeling-1.2/changeInformation/Inverse");\r
 278 \r
 279                         for (Resource value : parameter.changedValues()) {\r
 280                                 Statement modifiedComponent = graph.getPossibleStatement(value, l0.PropertyOf);\r
 281                                 if (modifiedComponent == null\r
 282                                                 || modifiedComponent.getPredicate().equals(changeInformation))\r
 283                                         continue;\r
 284                                 //System.err.println("+comp modi " + NameUtils.getSafeName(graph, renamedComponent, true));\r
 285                                 w.addComponentModification(modifiedComponent.getObject());\r
 286                         }\r
 287                         for (Resource value : parameter.changedResources()) {\r
 288                                 // No more info => need to check further\r
 289                                 if(!graph.isImmutable(value))\r
 290                                         w.addComponentModification(value);\r
 291                         }\r
 292                         for (StatementChange change : parameter.changedStatements()) {\r
 293                                 //System.err.println("-stm " + NameUtils.getSafeName(graph, change.getSubject(), true) + " " + NameUtils.getSafeName(graph, change.getPredicate(), true) + " " + NameUtils.getSafeName(graph, change.getObject(), true));\r
 294                                 Resource subject = change.getSubject();\r
 295                                 Resource predicate = change.getPredicate();\r
 296                                 Resource object = change.getObject();\r
 297                                 if(!object.isPersistent()) continue;\r
 298                                 if (predicate.equals(l0.ConsistsOf)) {\r
 299                                         if (change.isClaim())\r
 300                                                 w.addComponentAddition(subject, object);\r
 301                                         else \r
 302                                                 w.addComponentRemoval(subject, object);\r
 303                                 } else if (predicate.equals(l0.IsLinkedTo)) {\r
 304                                         w.addLinkChange(subject);\r
 305                                 } else /*if (graph.isSubrelationOf(predicate, l0.DependsOn))*/ {\r
 306                                         //System.err.println("-modi " + NameUtils.getSafeName(graph, subject, true));\r
 307                                         w.addComponentModification(subject);\r
 308                                 } \r
 309                         }\r
 310                         return w.getResult();\r
 311                 }\r
 312 \r
 313         };\r
 314 \r
 315         private static int trackers = 0;\r
 316         \r
 317         private static ChangeListener listener;\r
 318 \r
 319         public static void assertFinishedTracking() {\r
 320             if(trackers != 0) throw new IllegalStateException("Trackers should be 0 (was " + trackers + ")");\r
 321         }\r
 322         \r
 323         @Override\r
 324         public synchronized void untrack(RequestProcessor processor, final Resource model) {\r
 325 \r
 326             trackers--;\r
 327             \r
 328             if(trackers < 0) throw new IllegalStateException("Dependency tracking reference count is broken");\r
 329             \r
 330             if(trackers == 0) {\r
 331                 \r
 332                 if(listener == null) throw new IllegalStateException("Dependency tracking was not active");\r
 333             \r
 334                 GraphChangeListenerSupport changeSupport = processor.getService(GraphChangeListenerSupport.class);\r
 335                 changeSupport.removeMetadataListener(listener);\r
 336                 listener = null;\r
 337                         \r
 338             }\r
 339             \r
 340         }\r
 341 \r
 342         @Override\r
 343         public synchronized void trackAndIndex(RequestProcessor processor, Resource model__) {\r
 344 \r
 345             if(trackers == 0) {\r
 346 \r
 347                 if(listener != null) throw new IllegalStateException("Dependency tracking was active");\r
 348 \r
 349                 listener = new GenericChangeListener<DependencyChangesRequest, DependencyChanges>() {\r
 350 \r
 351                     @Override\r
 352                     public boolean preEventRequest() {\r
 353                         return !Indexing.isDependenciesIndexingDisabled();\r
 354                     }\r
 355 \r
 356                     @Override\r
 357                     public void onEvent(ReadGraph graph, MetadataI metadata, DependencyChanges event) throws DatabaseException {\r
 358 \r
 359                         TimeLogger.log(DependenciesRelation.class, "trackAndIndex.onEvent: starting index update processing");\r
 360 \r
 361                         if(DEBUG)\r
 362                             System.err.println("Adding metadata " + event + " in revision " + graph.getService(ManagementSupport.class).getHeadRevisionId());\r
 363 \r
 364                         WriteGraph w = (WriteGraph)graph;\r
 365                         if(!event.isEmpty())\r
 366                                 w.addMetadata(event);\r
 367 \r
 368                         final Session session = graph.getSession();\r
 369                         final IndexedRelations indexer = session.getService(IndexedRelations.class);\r
 370                         Layer0 L0 = Layer0.getInstance(graph);\r
 371                         SerialisationSupport ss = graph.getService(SerialisationSupport.class);\r
 372 \r
 373                         for(Map.Entry<Resource, Change[]>  modelEntry : event.get().entrySet()) {\r
 374 \r
 375                             final Resource model = modelEntry.getKey();\r
 376                             final Change[] changes = modelEntry.getValue();\r
 377 \r
 378                             boolean linkChange = false;\r
 379 \r
 380                             Collection<Object[]> _additions = Collections.emptyList();\r
 381                             Collection<Object> _removals = Collections.emptyList();\r
 382                             Collection<Object> _replacementKeys = Collections.emptyList();\r
 383                             Collection<Object[]> _replacementObjects = Collections.emptyList();\r
 384                             Collection<Pair<String, String>> _typeChanges = Collections.emptyList();\r
 385 \r
 386                             if(DEBUG) System.out.println("MODEL: " + NameUtils.getSafeLabel(graph, model));\r
 387                             //                final Change[] changes = event.get(model);\r
 388                             if(DEBUG) System.out.println("  CHANGES: " + Arrays.toString(changes));\r
 389                             if (changes != null) {\r
 390                                 _additions = new ArrayList<Object[]>();\r
 391                                 _removals = new ArrayList<Object>();\r
 392                                 _replacementKeys = new ArrayList<Object>();\r
 393                                 _replacementObjects = new ArrayList<Object[]>();\r
 394                                 _typeChanges = new HashSet<Pair<String, String>>();\r
 395 \r
 396                                 for (Change _entry : changes) {\r
 397                                     if (_entry instanceof ComponentAddition) {\r
 398                                         ComponentAddition entry = (ComponentAddition)_entry;\r
 399                                         final String name = graph.getPossibleRelatedValue(entry.component, L0.HasName, Bindings.STRING);\r
 400                                         final GUID id = graph.getPossibleRelatedValue(entry.component, L0.identifier, GUID.BINDING);\r
 401                                         final String types = graph.syncRequest(new TypeString(L0, graph.getTypes(entry.component)));\r
 402                                         if (name != null && types != null) {\r
 403                                                 if(!entry.isValid(graph)) continue;\r
 404                                             Resource parent = graph.getPossibleObject(entry.component, L0.PartOf);\r
 405                                             if (parent != null) {\r
 406                                                 _additions.add(new Object[] { ss.getRandomAccessId(parent), ss.getRandomAccessId(entry.component), name, types, id != null ? id.indexString() : "" });\r
 407                                             } else {\r
 408                                                     System.err.println("resource " + entry.component + ": no parent for entry " + name + " " + types);\r
 409                                             }\r
 410                                         } else {\r
 411                                             System.err.println("resource " + entry.component + ": " + name + " " + types);\r
 412                                         }\r
 413                                     } else if(_entry instanceof ComponentModification) {\r
 414                                         ComponentModification entry = (ComponentModification)_entry;\r
 415                                         final String name = graph.getPossibleRelatedValue(entry.component, L0.HasName, Bindings.STRING);\r
 416                                         final GUID id = graph.getPossibleRelatedValue(entry.component, L0.identifier, GUID.BINDING);\r
 417                                         if(graph.isInstanceOf(entry.component, L0.Type)) {\r
 418                                             SerialisationSupport support = session.getService(SerialisationSupport.class);\r
 419                                             _typeChanges.add(new Pair<String, String>(name, String.valueOf(support.getRandomAccessId((Resource) entry.component))));\r
 420                                         } else {\r
 421                                             final String types = graph.syncRequest(new TypeString(L0, graph.getTypes(entry.component)));\r
 422                                             if (name != null && types != null) {\r
 423                                                 Resource part = graph.getPossibleObject(entry.component, L0.PartOf);\r
 424                                                 if(part != null) {\r
 425                                                     _replacementKeys.add(ss.getRandomAccessId(entry.component));\r
 426                                                     _replacementObjects.add(new Object[] { ss.getRandomAccessId(part), \r
 427                                                             ss.getRandomAccessId(entry.component), name, types, id != null ? id.indexString() : "" });\r
 428                                                 }\r
 429                                             }\r
 430                                         }\r
 431                                     } else if (_entry instanceof ComponentRemoval) {\r
 432                                         ComponentRemoval entry = (ComponentRemoval)_entry;\r
 433                                         if(!entry.isValid(graph)) continue;\r
 434                                         _removals.add(ss.getRandomAccessId(((ComponentRemoval)_entry).component));\r
 435                                     } else if (_entry instanceof LinkChange) {\r
 436                                         linkChange = true;\r
 437                                     }\r
 438                                 }\r
 439                             }\r
 440 \r
 441                             final boolean reset = linkChange || event.hasUnresolved;\r
 442                             //System.err.println("dependencies(" + NameUtils.getSafeLabel(graph, model) + "): reset=" + reset + " linkChange=" + linkChange + " unresolved=" + event.hasUnresolved );\r
 443 \r
 444                             if (reset || !_additions.isEmpty() || !_removals.isEmpty() || !_replacementKeys.isEmpty() || !_typeChanges.isEmpty()) {\r
 445 \r
 446                                 TimeLogger.log(DependenciesRelation.class, "trackAndIndex.onEvent: starting index update");\r
 447 \r
 448                                 final Collection<Object[]> additions = _additions;\r
 449                                 final Collection<Object> removals = _removals;\r
 450                                 final Collection<Object> replacementKeys = _replacementKeys;\r
 451                                 final Collection<Object[]> replacementObjects = _replacementObjects; \r
 452                                 final boolean typeNameChanges = typeNameChanges(graph, indexer, model, _typeChanges);\r
 453 \r
 454                             final UUID pending = Indexing.makeIndexPending();\r
 455 \r
 456                             {\r
 457                                 {\r
 458                                         try {\r
 459                                             boolean didChange = false;\r
 460                                             // Unresolved and linkChanges are not relevant any more\r
 461                                             boolean doReset = typeNameChanges;\r
 462 \r
 463                                             if (doReset) {\r
 464 \r
 465                                             if(DEBUG) {\r
 466                                                 System.err.println("resetIndex " + reset + " " + typeNameChanges);\r
 467                                             }\r
 468 \r
 469                                                 indexer.removeAll(null, graph, DependenciesRelation.this, resource, model);\r
 470                                                 didChange = true;\r
 471 \r
 472                                             } else {\r
 473 \r
 474                                                 if (!replacementKeys.isEmpty() && (replacementKeys.size() == replacementObjects.size())) {\r
 475                                                     if(DEBUG) {\r
 476                                                         System.out.println(replacementKeys.size() + " index replacements: " + replacementKeys);\r
 477                                                     }\r
 478                                                     didChange |= indexer.replace(null, graph, DependenciesRelation.this, resource, model, Dependencies.FIELD_RESOURCE, replacementKeys, replacementObjects);\r
 479                                                 }\r
 480                                                 if (!removals.isEmpty()) {\r
 481                                                     if(DEBUG) {\r
 482                                                         System.out.println(removals.size() + " index removals: " + removals);\r
 483                                                     }\r
 484                                                     indexer.remove(null, graph, DependenciesRelation.this, resource, model, Dependencies.FIELD_RESOURCE, removals);\r
 485                                                     didChange = true;\r
 486                                                 }\r
 487                                                 if (!additions.isEmpty()) {\r
 488                                                     if(DEBUG) {\r
 489                                                         for(Object[] os : additions) System.err.println("Adding to index " + model + ": " + Arrays.toString(os));\r
 490                                                     }\r
 491                                                     //System.out.println(additions.size() + " index insertions");\r
 492                                                     indexer.insert(null, graph, DependenciesRelation.this, resource, model, additions);\r
 493                                                     didChange = true;\r
 494                                                 }\r
 495 \r
 496                                             }\r
 497 \r
 498                                             if (didChange)\r
 499                                                 // TODO: because this data is ran with\r
 500                                                 // ThreadUtils.getBlockingWorkExecutor()\r
 501                                                 // fireListeners needs to use peekService,\r
 502                                                 // not getService since there is no\r
 503                                                 // guarantee that the session isn't being\r
 504                                                 // disposed while this method is executing.\r
 505                                                 fireListeners(graph, model);\r
 506 \r
 507                                         } catch (Throwable t) {\r
 508                                             // Just to know if something unexpected happens here.\r
 509                                             Logger.defaultLogError("Dependencies index update failed for model "\r
 510                                                     + model + " and relation " + resource + ".", t);\r
 511                                             t.printStackTrace();\r
 512 \r
 513                                             // NOTE: Last resort: failure to update index\r
 514                                             // properly results in removal of the whole index.\r
 515                                             // This is the only thing that can be done\r
 516                                             // at this point to ensure that the index will\r
 517                                             // return correct results in the future, through\r
 518                                             // complete reinitialization. \r
 519                                             //indexer.removeAll(null, session, DependenciesRelation.this, resource, model);\r
 520                                         } finally {\r
 521                                             Indexing.releaseIndexPending(pending);\r
 522                                             Indexing.clearCaches(model);\r
 523                                         }\r
 524                                 }\r
 525                             }\r
 526 \r
 527                                 TimeLogger.log(DependenciesRelation.class, "trackAndIndex.onEvent: index update done");\r
 528                             }\r
 529                         }\r
 530 \r
 531                     }\r
 532 \r
 533                 };\r
 534 \r
 535                 GraphChangeListenerSupport changeSupport = processor.getService(GraphChangeListenerSupport.class);\r
 536                 changeSupport.addMetadataListener(listener);\r
 537 \r
 538             }\r
 539 \r
 540             trackers++;\r
 541 \r
 542         }\r
 543 \r
 544         private boolean typeNameChanges(ReadGraph graph, IndexedRelations indexer,\r
 545                         Resource model, final Collection<Pair<String, String>> typeChanges)\r
 546                         throws DatabaseException {\r
 547                 if (typeChanges.isEmpty())\r
 548                         return false;\r
 549 \r
 550                 for (Pair<String, String> nr : typeChanges) {\r
 551                         String query = Dependencies.FIELD_RESOURCE + ":[" + nr.second + " TO " + nr.second + "]";\r
 552                         //System.out.println("query: " + query);\r
 553                         List<Map<String, Object>> results = indexer.query(null, query, graph, resource, model, Integer.MAX_VALUE);\r
 554                         if (results.size() != 1) {\r
 555                                 return true;\r
 556                         } else {\r
 557                                 Map<String, Object> result = results.get(0);\r
 558                                 if (!ObjectUtils.objectEquals(result.get(Dependencies.FIELD_NAME), nr.first)) {\r
 559                                         return true;\r
 560                                 }\r
 561                         }\r
 562 //                      System.err.println("Type " + nr.first + " was unchanged.");\r
 563                 }\r
 564                 return false;\r
 565         }\r
 566 \r
 567         @Override\r
 568         public void addListener(RequestProcessor processor, Resource model, Runnable observer) {\r
 569                 DependenciesListenerStore store = processor.getSession().getService(DependenciesListenerStore.class);\r
 570                 store.addListener(model, observer);\r
 571         }\r
 572 \r
 573         @Override\r
 574         public void removeListener(RequestProcessor processor, Resource model, Runnable observer) {\r
 575                 DependenciesListenerStore store = processor.getSession().getService(DependenciesListenerStore.class);\r
 576                 store.removeListener(model, observer);\r
 577         }\r
 578 \r
 579         void fireListeners(RequestProcessor processor, Resource model) {\r
 580                 DependenciesListenerStore store = processor.getSession().peekService(DependenciesListenerStore.class);\r
 581                 if (store != null)\r
 582                         store.fireListeners(model);\r
 583         }\r
 584 \r
 585         @Override\r
 586         public void reset(RequestProcessor processor, Resource input) {\r
 587                 if (DEBUG) {\r
 588                         System.out.println("DependenciesRelation.reset: " + input);\r
 589                         new Exception("DependenciesRelation.reset(" + listener + ")").printStackTrace(System.out);\r
 590                 }\r
 591                 DependenciesListenerStore store = processor.getSession().getService(DependenciesListenerStore.class);\r
 592                 store.fireListeners(input);\r
 593         }\r
 594 \r
 595         public static void addSubtree(ReadGraph graph, Resource root) throws DatabaseException {\r
 596 \r
 597                 Resource indexRoot = graph.syncRequest(new IndexRoot(root));\r
 598                 addSubtree(graph, indexRoot, root);\r
 599 \r
 600         }\r
 601 \r
 602         public static void addSubtree(ReadGraph graph, Resource indexRoot, Resource subtreeRoot) throws DatabaseException {\r
 603                 \r
 604                 DependenciesRelation dr = new DependenciesRelation(graph, indexRoot);\r
 605         SerialisationSupport ss = graph.getService(SerialisationSupport.class);\r
 606 \r
 607         ArrayList<Entry> entries = dr.find(graph, subtreeRoot);\r
 608         entries.add(new Entry(graph, subtreeRoot));\r
 609 \r
 610                 ArrayList<Object[]> result = new ArrayList<Object[]>(entries.size());\r
 611                 for (Entry entry : entries) {\r
 612                         result.add(new Object[] { ss.getRandomAccessId(entry.parent), ss.getRandomAccessId(entry.resource), entry.name, entry.types, entry.id });\r
 613                 }\r
 614 \r
 615                 Layer0X L0X = Layer0X.getInstance(graph);\r
 616         IndexedRelations indexer = graph.getService(IndexedRelations.class);\r
 617         indexer.insert(null, graph, dr, L0X.DependenciesRelation, indexRoot, result);\r
 618                 \r
 619         }\r
 620         \r
 621 }\r