bundles/org.simantics.graph.db/src/org/simantics/graph/db/StreamingTransferableGraphImportProcess.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012, 2017 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *     Semantum Oy - e.g. #7016
  12  *******************************************************************************/
  13 package org.simantics.graph.db;
  14
  15 import java.io.DataInput;
  16 import java.io.IOException;
  17 import java.io.InputStream;
  18 import java.util.ArrayList;
  19 import java.util.Collections;
  20 import java.util.HashMap;
  21 import java.util.HashSet;
  22 import java.util.Map;
  23 import java.util.Set;
  24 import java.util.TreeMap;
  25
  26 import org.simantics.databoard.Bindings;
  27 import org.simantics.databoard.adapter.AdaptException;
  28 import org.simantics.databoard.binding.Binding;
  29 import org.simantics.databoard.binding.mutable.Variant;
  30 import org.simantics.databoard.serialization.Serializer;
  31 import org.simantics.databoard.type.Datatype;
  32 import org.simantics.databoard.util.URIStringUtils;
  33 import org.simantics.db.ReadGraph;
  34 import org.simantics.db.Resource;
  35 import org.simantics.db.Session;
  36 import org.simantics.db.VirtualGraph;
  37 import org.simantics.db.WriteOnlyGraph;
  38 import org.simantics.db.common.WriteBindings;
  39 import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;
  40 import org.simantics.db.common.request.PossibleIndexRoot;
  41 import org.simantics.db.common.uri.UnescapedChildMapOfResource;
  42 import org.simantics.db.common.utils.Logger;
  43 import org.simantics.db.exception.DatabaseException;
  44 import org.simantics.db.service.ClusterBuilder2;
  45 import org.simantics.db.service.ClusterBuilderFactory;
  46 import org.simantics.db.service.ClusteringSupport;
  47 import org.simantics.db.service.SerialisationSupport;
  48 import org.simantics.db.service.XSupport;
  49 import org.simantics.graph.db.TransferableGraphSource.TransferableGraphSourceProcedure;
  50 import org.simantics.graph.db.TransferableGraphSource.TransferableGraphSourceValueProcedure;
  51 import org.simantics.graph.representation.Extensions;
  52 import org.simantics.graph.representation.External;
  53 import org.simantics.graph.representation.Identity;
  54 import org.simantics.graph.representation.IdentityDefinition;
  55 import org.simantics.graph.representation.Internal;
  56 import org.simantics.graph.representation.Optional;
  57 import org.simantics.graph.representation.Root;
  58 import org.simantics.graph.representation.TransferableGraphUtils;
  59 import org.simantics.graph.utils.TGResourceUtil;
  60 import org.simantics.graph.utils.TGResourceUtil.LongAdapter;
  61 import org.simantics.utils.datastructures.Pair;
  62 import org.slf4j.LoggerFactory;
  63
  64 import gnu.trove.map.TIntObjectMap;
  65 import gnu.trove.map.hash.TIntObjectHashMap;
  66
  67 public class StreamingTransferableGraphImportProcess implements TransferableGraphImporter {
  68
  69         private static final org.slf4j.Logger LOGGER = LoggerFactory.getLogger(StreamingTransferableGraphImportProcess.class);
  70
  71         Resource indexRoot;
  72         TransferableGraphSource tg;
  73         VirtualGraph vg;
  74         IImportAdvisor2 advisor;
  75         TGStatusMonitor monitor;
  76         ClusterBuilder2 builder;
  77         final TGResourceUtil resourceUtil = new TGResourceUtil();
  78
  79         int[] handles;
  80
  81         Map<String,Integer> allMissingExternals = new HashMap<>();
  82         Set<String> missingExternals = new HashSet<>();
  83         Map<String,Resource> resolvedParents = new HashMap<>();
  84         TIntObjectHashMap<Resource> existingInternalMap = new TIntObjectHashMap<>();
  85
  86         int resourceCount;
  87         Identity[] identities;
  88         TreeMap<String, Variant> extensions;
  89
  90         // Builtins
  91         Resource RootLibrary;
  92         Resource String;
  93         Resource ExternalEntity;
  94         Resource Library;
  95
  96         Resource InstanceOf;
  97         Resource ConsistsOf;
  98         Resource PartOf;
  99         Resource HasName;
 100         Resource NameOf;
 101
 102         public StreamingTransferableGraphImportProcess(Session session, VirtualGraph vg, TransferableGraphSource tg, IImportAdvisor2 advisor) {
 103                 this(session, vg, tg, advisor, null);
 104         }
 105
 106         public StreamingTransferableGraphImportProcess(Session session, VirtualGraph vg, TransferableGraphSource tg, IImportAdvisor2 advisor, TGStatusMonitor monitor) {
 107                 this.tg = tg;
 108                 this.vg = vg;
 109                 this.advisor = advisor;
 110                 this.monitor = monitor;
 111         }
 112
 113         private int updatePercentage(int percentage, int done, int total) {
 114                 if (monitor != null && (done & 63) == 0) {
 115                         int current = 100*done / total;
 116                         if (current > percentage) {
 117                                 percentage = current;
 118                                 monitor.status(percentage);
 119                         }
 120                 }
 121                 return percentage;
 122         }
 123
 124         public void readIdentities(ReadGraph g) throws Exception {
 125                 extensions = tg.getExtensions();
 126                 resourceCount = tg.getResourceCount();
 127                 identities = new Identity[tg.getIdentityCount()];
 128                 tg.forIdentities(g, new TransferableGraphSourceProcedure<Identity>() {
 129
 130                         int counter = 0;
 131
 132                         @Override
 133                         public void execute(Identity value) throws Exception {
 134                                 identities[counter++] = value;
 135                         }
 136                 });
 137         }
 138
 139         public void findBuiltins(WriteOnlyGraph g) throws DatabaseException {
 140                 RootLibrary = g.getBuiltin("http:/");
 141                 String = g.getBuiltin(CoreInitialization.LAYER0 + "String");
 142                 Library = g.getBuiltin(CoreInitialization.LAYER0 + "Library");
 143                 InstanceOf = g.getBuiltin(CoreInitialization.LAYER0 + "InstanceOf");
 144                 ConsistsOf = g.getBuiltin(CoreInitialization.LAYER0 + "ConsistsOf");
 145                 PartOf = g.getBuiltin(CoreInitialization.LAYER0 + "PartOf");
 146                 HasName = g.getBuiltin(CoreInitialization.LAYER0 + "HasName");
 147                 NameOf = g.getBuiltin(CoreInitialization.LAYER0 + "NameOf");
 148                 ExternalEntity = g.getBuiltin(CoreInitialization.LAYER0 + "ExternalEntity");
 149         }
 150
 151         public void findBuiltins(ReadGraph g) throws DatabaseException {
 152                 RootLibrary = g.getBuiltin("http:/");
 153                 String = g.getBuiltin(CoreInitialization.LAYER0 + "String");
 154                 Library = g.getBuiltin(CoreInitialization.LAYER0 + "Library");
 155                 InstanceOf = g.getBuiltin(CoreInitialization.LAYER0 + "InstanceOf");
 156                 ConsistsOf = g.getBuiltin(CoreInitialization.LAYER0 + "ConsistsOf");
 157                 PartOf = g.getBuiltin(CoreInitialization.LAYER0 + "PartOf");
 158                 HasName = g.getBuiltin(CoreInitialization.LAYER0 + "HasName");
 159                 NameOf = g.getBuiltin(CoreInitialization.LAYER0 + "NameOf");
 160                 ExternalEntity = g.getBuiltin(CoreInitialization.LAYER0 + "ExternalEntity");
 161         }
 162
 163         void addMissing(int handleIndex, String external) {
 164                 allMissingExternals.put(external, handleIndex);
 165                 Set<String> removals = new HashSet<>();
 166                 for(String ext : missingExternals) if(ext.startsWith(external + "/")) return;
 167                 for(String ext : missingExternals) if(external.startsWith(ext + "/")) removals.add(ext);
 168                 missingExternals.removeAll(removals);
 169                 missingExternals.add(external);
 170         }
 171
 172         void prepare(ReadGraph graph) throws Exception {
 173
 174                 Resource target = advisor.getTarget();
 175                 if(target != null)
 176                         indexRoot = graph.syncRequest(new PossibleIndexRoot(target));
 177
 178                 findBuiltins(graph);
 179                 readIdentities(graph);
 180
 181 //              System.err.println("ext: " + extensions);
 182 //              System.err.println("rc: " + resourceCount);
 183 //              System.err.println("ic: " + identities.length);
 184
 185                 ClusterBuilderFactory factory = graph.getService(ClusterBuilderFactory.class);
 186                 ClusterBuilder2 builder = factory.create(vg, false);
 187
 188                 this.handles = new int[resourceCount];
 189                 TIntObjectMap<Identity> identityMap = TransferableGraphUtils.mapIdentities(identities);
 190
 191                 for(Identity identity : identities) {
 192                         IdentityDefinition definition = identity.definition;
 193                         if(definition instanceof External) {
 194                                 External def = (External)definition;
 195                                 if(def.parent == -1) {
 196                                     handles[identity.resource] = builder.handle(RootLibrary);
 197                                 } else {
 198                                         if("@inverse".equals(def.name)) {
 199                                                 int parent = handles[def.parent];
 200                                                 int child = builder.handle(graph.getInverse(builder.resource(parent)));
 201                                                 handles[identity.resource] = child;
 202                                         } else {
 203                                                 int handle = handles[def.parent];
 204                                                 Resource parent = handle != 0 ? builder.resource(handle) : null;
 205                                                 // TODO: escape should be removed when names become well-behaving
 206                                                 if(parent != null) {
 207                                                         resolvedParents.put(graph.getURI(parent), parent);
 208                                                     Map<String,Resource> childMap = graph
 209                                             .syncRequest(new UnescapedChildMapOfResource(parent),
 210                                                     TransientCacheAsyncListener.instance());
 211                                                         Resource child = childMap.get(def.name);
 212                                                         if(child == null) {
 213                                                                 addMissing(identity.resource, graph.getURI(parent) + "/" + URIStringUtils.escape(def.name));
 214                                                         } else {
 215                                                                 handles[identity.resource] = builder.handle(child);
 216                                                         }
 217                                                 } else {
 218                                                     addMissing(identity.resource, TransferableGraphUtils.getURI(resourceCount, identityMap, def.parent) + "/" + URIStringUtils.escape(def.name));
 219                                                 }
 220                                         }
 221                                 }
 222                         }
 223                         else if(definition instanceof Internal) {
 224                                 String uri = TransferableGraphUtils.getURI(resourceCount, identityMap, identity.resource);
 225                                 Resource existing = graph.getPossibleResource(uri);
 226                                 if(existing != null) {
 227                                         existingInternalMap.put(identity.resource, existing);
 228                                 }
 229                         }
 230                         else if(definition instanceof Root) {
 231                                 Root root = (Root)definition;
 232                                 if(root.name.equals(""))
 233                                     handles[identity.resource] = builder.handle(RootLibrary);
 234                                 else  {
 235                                         Resource existing = advisor.analyzeRoot(graph, root);
 236                                         if(existing != null)
 237                                             handles[identity.resource] = builder.handle(existing);
 238                                 }
 239                         }
 240                         else if(definition instanceof Optional) {
 241                                 External def = (External)definition;
 242                                 Resource parent = builder.resource(handles[def.parent]);
 243                                 if(parent != null)
 244                                         handles[identity.resource] = builder.handle(graph.syncRequest(new UnescapedChildMapOfResource(parent)).get(def.name));
 245                         }
 246                 }
 247
 248                 if (!missingExternals.isEmpty() && failOnMissingEntities())
 249                         throw new MissingDependencyException(this);
 250         }
 251
 252         private boolean failOnMissingEntities() {
 253                 return "true".equalsIgnoreCase(
 254                                 System.getProperty(
 255                                                 "org.simantics.tg.import.failOnMissingEntities",
 256                                                 "false") );
 257         }
 258
 259         @Override
 260         public Resource createChild(WriteOnlyGraph graph, Resource parent, Resource child, String name) throws DatabaseException {
 261             if(child == null) child = graph.newResource();
 262                 Resource nameResource = graph.newResource();
 263                 graph.claim(nameResource, InstanceOf, null, String);
 264                 graph.claimValue(nameResource, name, WriteBindings.STRING);
 265                 graph.claim(child, HasName, NameOf, nameResource);
 266                 return child;
 267         }
 268
 269         int[] getClustering() {
 270                 Variant v = extensions.get(Extensions.CLUSTERING);
 271                 if(v == null) return null;
 272                 try {
 273                         return (int[])v.getValue(Bindings.INT_ARRAY);
 274                 } catch (AdaptException e) {
 275                         Logger.defaultLogError(e);
 276                         return null;
 277                 }
 278         }
 279
 280         int[] getClusterSets() {
 281                 Variant v = extensions.get(Extensions.CLUSTER_SETS);
 282                 if(v == null) return null;
 283                 try {
 284                         return (int[])v.getValue(Bindings.INT_ARRAY);
 285                 } catch (AdaptException e) {
 286                         Logger.defaultLogError(e);
 287                         return null;
 288                 }
 289         }
 290
 291         boolean needTranslation(Datatype type) {
 292             return resourceUtil.mayHaveResource(type);
 293         }
 294
 295         void findClusterSet(WriteOnlyGraph graph, Resource rootLibrary, int[] clustering, int[] clusterSets, long[] clusters, int id) throws DatabaseException {
 296                 ClusteringSupport support = graph.getService(ClusteringSupport.class);
 297                 if(id == Extensions.ROOT_LIBRARY_CLUSTER_SET || id == Extensions.INDEX_ROOT_CLUSTER_SET) return;
 298                 Resource indexRootClusterSetResource = rootLibrary;
 299                 if(indexRoot != null && support.isClusterSet(indexRoot)) {
 300                         indexRootClusterSetResource = indexRoot;
 301                 } else {
 302                         graph.setClusterSet4NewResource(rootLibrary);
 303                         graph.flushCluster();
 304                 }
 305                 int indexRootCsHandle = builder.handle(indexRootClusterSetResource);
 306                 for(int pos=0,index=0;index<clustering.length;index++) {
 307                         pos += clustering[index];
 308                         if(id < pos) {
 309                                 int cs = clusterSets[index];
 310                                 if(handles[id] == 0) {
 311                                         int csHandle = 0;
 312                                         if(cs == Extensions.ROOT_LIBRARY_CLUSTER_SET) csHandle = builder.handle(rootLibrary);
 313                                         else if(cs == Extensions.INDEX_ROOT_CLUSTER_SET) {
 314                                                 if(indexRoot == null) throw new DatabaseException("No index root was available in TG import.");
 315                                                 csHandle = indexRootCsHandle;
 316                                         }
 317                                         else {
 318                                                 findClusterSet(graph, rootLibrary, clustering, clusterSets, clusters, cs);
 319                                                 csHandle = handles[cs];
 320                                         }
 321
 322                                         if(clusters[index] != 0)
 323                                                 builder.selectCluster(clusters[index]);
 324                                         else if(cs >= 0)
 325                                                 builder.newCluster(csHandle);
 326
 327                                         handles[id] = builder.newResource(csHandle);
 328                                         clusters[index] = support.getCluster(builder.resource(handles[id]));
 329
 330                                         builder.createClusterSet(handles[id]);
 331                                 }
 332                                 return;
 333                         }
 334                 }
 335         }
 336
 337         void createMissing(final WriteOnlyGraph graph) throws Exception {
 338
 339                 if(allMissingExternals.isEmpty()) return;
 340
 341                 XSupport xs = graph.getService(XSupport.class);
 342                 Pair<Boolean,Boolean> serviceMode = xs.getServiceMode();
 343                 xs.setServiceMode(true, false);
 344                 try {
 345                         ArrayList<String> missing = new ArrayList<>(allMissingExternals.keySet());
 346                         Collections.sort(missing);
 347                         for(String uri : missing) {
 348                                 String[] parts = URIStringUtils.splitURI(uri);
 349                                 // URIStringUtils.splitURI returns root URI in non-standard format, so fix it manually as a workaround
 350                                 if (parts[0].equals("http://")) {
 351                                         parts[0] = "http:/";
 352                                 }
 353
 354                                 Resource parent = resolvedParents.get(parts[0]);
 355                                 // TODO: proper exception message
 356                                 if(parent == null) {
 357                                         throw new IllegalStateException("Missing URI: " + uri);
 358                                 }
 359
 360                                 Resource childResource = graph.newResource();
 361                                 graph.claim(childResource, InstanceOf, null, ExternalEntity);
 362
 363                                 Resource nameResource = graph.newResource();
 364                                 graph.claim(nameResource, InstanceOf, null, String);
 365                                 graph.claimValue(nameResource, URIStringUtils.unescape(parts[1]), WriteBindings.STRING);
 366                                 graph.claim(childResource, HasName, NameOf, nameResource);
 367
 368                                 graph.claim(parent, ConsistsOf, PartOf, childResource);
 369
 370                                 resolvedParents.put(uri, childResource);
 371
 372                                 handles[allMissingExternals.get(uri)] = builder.handle(childResource);
 373                         }
 374                 } finally {
 375                         xs.setServiceMode(serviceMode.first, serviceMode.second);
 376                 }
 377         }
 378
 379         void write(final WriteOnlyGraph graph) throws Exception {
 380
 381         final SerialisationSupport ss = graph.getService(SerialisationSupport.class);
 382
 383         ClusterBuilderFactory factory = graph.getService(ClusterBuilderFactory.class);
 384         if(advisor instanceof IImportAdvisor2) {
 385             boolean allowImmutable = ((IImportAdvisor2)advisor).allowImmutableModifications();
 386             builder = factory.create(vg, allowImmutable);
 387         } else {
 388             builder = factory.create(vg, false);
 389         }
 390
 391         createMissing(graph);
 392
 393                 final int[] handles = this.handles;
 394
 395                 int[] clustering = getClustering();
 396                 if(clustering != null) {
 397
 398                         int[] clusterSets = getClusterSets();
 399                         if(clusterSets != null) {
 400
 401                                 assert(clustering.length == clusterSets.length);
 402
 403                                 long[] clusters = new long[clustering.length];
 404
 405                                 // Create clustering
 406                                 for(int i=0;i<clusterSets.length;i++) {
 407                                         findClusterSet(graph, graph.getRootLibrary(), clustering, clusterSets, clusters, clusterSets[i]);
 408                                 }
 409
 410                                 // Then create all resources
 411                                 int i=0;
 412                             for(int j=0;j<clustering.length;j++) {
 413                                 int c = clustering[j];
 414                                 int s = clusterSets[j];
 415                                 int setHandle = 0;
 416                                         if(s == Extensions.ROOT_LIBRARY_CLUSTER_SET)
 417                                                 setHandle = builder.handle(graph.getRootLibrary());
 418                                         else if(s == Extensions.INDEX_ROOT_CLUSTER_SET) {
 419                                                 if(indexRoot == null) throw new DatabaseException("No index root was available in TG import.");
 420                                                 setHandle = builder.handle(indexRoot);
 421                                         }
 422                                         else setHandle = handles[s];
 423                                         // Preserve clustering only for internal resources
 424                                         if(clusters[j] != 0)
 425                                                 builder.selectCluster(clusters[j]);
 426                                         else if(s >= 0)
 427                                                 builder.newCluster(setHandle);
 428                                         for(int r=0;r<c;r++, i++)
 429                                                 if(handles[i] == 0) handles[i] = builder.newResource();
 430                                 }
 431
 432                                 for(;i<handles.length;++i)
 433                                         if(handles[i] == 0) handles[i] = builder.newResource();
 434
 435                         } else {
 436
 437                         int i = 0;
 438                                 for(int c : clustering) {
 439                                         builder.newCluster();
 440                                         for(int r=0;r<c;r++, i++)
 441                                                 if(handles[i] == 0) handles[i] = builder.newResource();
 442                                 }
 443
 444                                 for(;i<handles.length;++i)
 445                                         if(handles[i] == 0) handles[i] = builder.newResource();
 446
 447                         }
 448
 449                 } else {
 450
 451                         // Create blank resources
 452                         for(int i=0;i<handles.length;++i)
 453                                 if(handles[i] == 0) handles[i] = builder.newResource();
 454
 455                 }
 456
 457                 // Internal identities
 458                 for(Identity identity : identities) {
 459                         IdentityDefinition definition = identity.definition;
 460 //                      if(handles[identity.resource] != 0)
 461 //                              continue;
 462                         if(definition instanceof External) {
 463                                 // Already done everything
 464                         }
 465                         else if(definition instanceof Internal) {
 466                                 Internal def = (Internal)definition;
 467
 468                                 Resource external = existingInternalMap.get(identity.resource);
 469                                 if(external != null) {
 470                                         handles[identity.resource] = builder.handle(external);
 471                                 } else {
 472                                         if(handles[identity.resource] != 0)
 473                                                 handles[identity.resource] = builder.handle(advisor.createChild(graph, this, builder.resource(handles[def.parent]), builder.resource(handles[identity.resource]), def.name));
 474                                         else
 475                                                 handles[identity.resource] = builder.handle(advisor.createChild(graph, this, builder.resource(handles[def.parent]), null, def.name));
 476                                 }
 477
 478                         }
 479                         else if(definition instanceof Root) {
 480
 481                                 Root root = (Root)definition;
 482                                 if(handles[identity.resource] != 0)
 483                                         handles[identity.resource] = builder.handle(advisor.createRoot(graph, root, builder.resource(handles[identity.resource])));
 484                                 else
 485                                         handles[identity.resource] = builder.handle(advisor.createRoot(graph, root, null));
 486                         }
 487                         else if(definition instanceof Optional) {
 488                                 Optional def = (Optional)definition;
 489                                 if(handles[identity.resource] != 0) {
 490                                         Resource child = advisor.createChild(graph, this, builder.resource(handles[def.parent]), builder.resource(handles[identity.resource]), def.name);
 491                                         graph.claim(child, InstanceOf, null, Library); // ???
 492                                         handles[identity.resource] = builder.handle(child);
 493                                 } else {
 494                                         Resource child = advisor.createChild(graph, this, builder.resource(handles[def.parent]), null, def.name);
 495                                         graph.claim(child, InstanceOf, null, Library); // ???
 496                                         handles[identity.resource] = builder.handle(child);
 497                                 }
 498                         }
 499                 }
 500
 501                 int[] done = { 0 };
 502                 int[] percentage = { 0 };
 503
 504                 int statementCount = tg.getStatementCount();
 505                 tg.forStatements(null, new TransferableGraphSourceProcedure<int[]>() {
 506
 507                         @Override
 508                         public void execute(int[] value) throws Exception {
 509
 510                                 int sub = value[0];
 511                                 int pred = value[1];
 512                                 int inv = value[2];
 513                                 int obj = value[3];
 514
 515                                 int subject = handles[sub];
 516                                 int predicate = handles[pred];
 517                                 int object = handles[obj];
 518
 519                                 builder.addStatement(graph, subject, predicate, object);
 520                                 if(inv >= 0) {
 521                                     int inverse = handles[inv];
 522                                     builder.addStatement(graph, object, inverse, subject);
 523                                 }
 524
 525                                 // Count from 0% -> 50% => total = statementCount*2
 526                                 percentage[0] = updatePercentage(percentage[0], done[0]++, statementCount*2);
 527
 528                         }
 529
 530                 });
 531
 532                 int valueCount = tg.getValueCount();
 533                 done[0] = 0;
 534
 535                 class ValueProcedure extends InputStream implements TransferableGraphSourceValueProcedure {
 536
 537             private TGResourceUtil util = new TGResourceUtil();
 538                     private DataInput source;
 539
 540             @Override
 541             public void execute(int _resource, Datatype type, DataInput stream) throws Exception {
 542
 543                 source = stream;
 544
 545                 //int file = _resource & 0x80000000;
 546                 int resource = _resource & 0x7FFFFFFF;
 547
 548                 Binding binding = Bindings.getBinding(type);
 549                 Serializer s = Bindings.getSerializer(binding);
 550
 551                 builder.beginValue(handles[resource]);
 552                 if(util.mayHaveResource(type)) {
 553                     Object value = s.deserialize(stream);
 554                     util.adaptValue( binding,  value, new LongAdapter() {
 555                                 @Override
 556                                 public long adapt(long in) {
 557                                     try {
 558                                         return ss.getRandomAccessId(handles[(int)in]);
 559                                     } catch (DatabaseException e) {
 560                                         throw new IllegalStateException(e);
 561                                     }
 562                                 }
 563                             });
 564                     byte[] bytes = s.serialize(value);
 565                     for(byte b : bytes) {
 566                         int val = b;
 567                         if(val < 0) val += 256;
 568                         builder.appendValue(val);
 569                     }
 570                 } else {
 571                     s.skip(this);
 572                 }
 573                 builder.endValue();
 574                 work();
 575
 576             }
 577
 578             @Override
 579             public int read() throws IOException {
 580                 int value = source.readUnsignedByte();
 581                 try {
 582                     builder.appendValue(value);
 583                 } catch (DatabaseException e) {
 584                     LOGGER.error("Failed to write value into database", e);
 585                 }
 586                 return value;
 587             }
 588
 589             @Override
 590             public void rawCopy(int resource, int length, DataInput input) throws Exception {
 591                 builder.beginValue(handles[resource]);
 592                 for (int i = 0; i < length; ++i)
 593                     builder.appendValue(input.readUnsignedByte());
 594                 builder.endValue();
 595                 work();
 596             }
 597
 598             private void work() {
 599                 // Count from 50% -> 100% => [valueCount, valueCount*2)
 600                 percentage[0] = updatePercentage(percentage[0], valueCount + done[0]++, valueCount*2);
 601             }
 602                 };
 603
 604                 tg.forValues2(null, new ValueProcedure());
 605
 606                 for(Resource r : existingInternalMap.valueCollection()) {
 607                         graph.deny(r, InstanceOf, null, ExternalEntity, null);
 608                 }
 609
 610         }
 611
 612         @Override
 613         public long[] getResourceIds(SerialisationSupport serializer) throws DatabaseException {
 614                 final int count = handles.length;
 615                 long[] resourceIds = new long[count];
 616                 for(int i=0;i<count;++i)
 617                     resourceIds[i] = serializer.getRandomAccessId(handles[i]);
 618                 return resourceIds;
 619         }
 620 }