bundles/org.simantics.document.server/src/org/simantics/document/server/Functions.java

   1 package org.simantics.document.server;
   2
   3 import java.io.PrintWriter;
   4 import java.io.StringWriter;
   5 import java.util.ArrayList;
   6 import java.util.Collection;
   7 import java.util.Collections;
   8 import java.util.HashMap;
   9 import java.util.List;
  10 import java.util.Map;
  11 import java.util.TreeMap;
  12
  13 import org.simantics.Simantics;
  14 import org.simantics.databoard.Bindings;
  15 import org.simantics.databoard.Datatypes;
  16 import org.simantics.databoard.binding.Binding;
  17 import org.simantics.databoard.type.Datatype;
  18 import org.simantics.db.AsyncReadGraph;
  19 import org.simantics.db.DirectStatements;
  20 import org.simantics.db.ReadGraph;
  21 import org.simantics.db.RequestProcessor;
  22 import org.simantics.db.Resource;
  23 import org.simantics.db.Session;
  24 import org.simantics.db.Statement;
  25 import org.simantics.db.WriteGraph;
  26 import org.simantics.db.common.primitiverequest.Adapter;
  27 import org.simantics.db.common.procedure.adapter.TransientCacheListener;
  28 import org.simantics.db.common.request.UnaryRead;
  29 import org.simantics.db.common.request.UniqueRead;
  30 import org.simantics.db.common.request.WriteResultRequest;
  31 import org.simantics.db.common.utils.Logger;
  32 import org.simantics.db.common.utils.NameUtils;
  33 import org.simantics.db.exception.DatabaseException;
  34 import org.simantics.db.layer0.function.All;
  35 import org.simantics.db.layer0.request.ProjectModels;
  36 import org.simantics.db.layer0.request.PropertyInfo;
  37 import org.simantics.db.layer0.request.PropertyInfoRequest;
  38 import org.simantics.db.layer0.request.VariableProperty;
  39 import org.simantics.db.layer0.request.VariableRead;
  40 import org.simantics.db.layer0.request.VariableValueWithBinding;
  41 import org.simantics.db.layer0.scl.SCLDatabaseException;
  42 import org.simantics.db.layer0.variable.ConstantPropertyVariable;
  43 import org.simantics.db.layer0.variable.ProxyChildVariable;
  44 import org.simantics.db.layer0.variable.ProxySessionRequest;
  45 import org.simantics.db.layer0.variable.ProxyVariables;
  46 import org.simantics.db.layer0.variable.StandardAssertedGraphPropertyVariable;
  47 import org.simantics.db.layer0.variable.StandardGraphChildVariable;
  48 import org.simantics.db.layer0.variable.StandardGraphPropertyVariable;
  49 import org.simantics.db.layer0.variable.Variable;
  50 import org.simantics.db.layer0.variable.VariableMap;
  51 import org.simantics.db.layer0.variable.VariableMapImpl;
  52 import org.simantics.db.layer0.variable.Variables;
  53 import org.simantics.db.procedure.AsyncProcedure;
  54 import org.simantics.db.service.DirectQuerySupport;
  55 import org.simantics.document.base.ontology.DocumentationResource;
  56 import org.simantics.document.server.bean.Command;
  57 import org.simantics.document.server.bean.DataDefinition;
  58 import org.simantics.document.server.handler.AbstractEventHandler;
  59 import org.simantics.document.server.handler.AbstractResponseHandler;
  60 import org.simantics.document.server.handler.EventHandler;
  61 import org.simantics.document.server.io.CommandContext;
  62 import org.simantics.document.server.io.CommandContextImpl;
  63 import org.simantics.document.server.io.CommandContextMutable;
  64 import org.simantics.document.server.io.CommandResult;
  65 import org.simantics.document.server.io.IConsole;
  66 import org.simantics.document.server.request.NodeRequest;
  67 import org.simantics.document.server.request.ServerSCLHandlerValueRequest;
  68 import org.simantics.document.server.request.ServerSCLValueRequest;
  69 import org.simantics.document.server.serverResponse.ServerResponse;
  70 import org.simantics.document.server.serverResponse.SuccessResponse;
  71 import org.simantics.document.server.state.StateNodeManager;
  72 import org.simantics.document.server.state.StateRealm;
  73 import org.simantics.document.server.state.StateSessionManager;
  74 import org.simantics.modeling.ModelingResources;
  75 import org.simantics.modeling.services.CaseInsensitiveComponentFunctionNamingStrategy;
  76 import org.simantics.modeling.services.ComponentNamingStrategy;
  77 import org.simantics.operation.Layer0X;
  78 import org.simantics.project.IProject;
  79 import org.simantics.scl.compiler.module.repository.ImportFailureException;
  80 import org.simantics.scl.compiler.types.TCon;
  81 import org.simantics.scl.compiler.types.Type;
  82 import org.simantics.scl.compiler.types.Types;
  83 import org.simantics.scl.reflection.annotations.SCLValue;
  84 import org.simantics.scl.runtime.SCLContext;
  85 import org.simantics.scl.runtime.function.Function;
  86 import org.simantics.scl.runtime.function.Function1;
  87 import org.simantics.scl.runtime.function.FunctionImpl1;
  88 import org.simantics.scl.runtime.function.FunctionImpl4;
  89 import org.simantics.scl.runtime.reporting.SCLReportingHandler;
  90 import org.simantics.scl.runtime.tuple.Tuple;
  91 import org.simantics.scl.runtime.tuple.Tuple0;
  92 import org.simantics.scl.runtime.tuple.Tuple2;
  93 import org.simantics.scl.runtime.tuple.Tuple3;
  94 import org.simantics.scl.runtime.tuple.Tuple4;
  95 import org.simantics.scl.runtime.tuple.Tuple5;
  96 import org.simantics.simulation.experiment.IExperiment;
  97 import org.simantics.simulation.ontology.SimulationResource;
  98 import org.simantics.simulation.project.IExperimentManager;
  99 import org.simantics.structural2.variables.Connection;
 100 import org.simantics.structural2.variables.StandardProceduralChildVariable;
 101 import org.simantics.structural2.variables.VariableConnectionPointDescriptor;
 102 import org.slf4j.LoggerFactory;
 103
 104 import gnu.trove.map.hash.THashMap;
 105
 106 public class Functions {
 107
 108     private static final org.slf4j.Logger LOGGER = LoggerFactory.getLogger(Functions.class);
 109
 110     private static class PrimitivePropertyStatementsProcedure implements AsyncProcedure<DirectStatements> {
 111
 112         public DirectStatements result;
 113
 114         @Override
 115         public void execute(AsyncReadGraph graph, DirectStatements result) {
 116             this.result = result;
 117         }
 118
 119         @Override
 120         public void exception(AsyncReadGraph graph, Throwable throwable) {
 121         }
 122
 123     }
 124
 125     @SCLValue(type = "VariableMap")
 126     public static VariableMap primitiveProperties = new VariableMapImpl() {
 127         private void storePropertyValueAndExceptions(ReadGraph graph, Variable parent, String name, Variable property, Map<String, Variable> map) {
 128                 try {
 129                         Object value = property.getValue(graph);
 130                                 map.put(name, new ConstantPropertyVariable(parent, name, value, null));
 131                 } catch (DatabaseException e) {
 132                         Variable propertyExceptions = map.get(NodeRequest.PROPERTY_VALUE_EXCEPTIONS);
 133                         Map<String, Exception> exceptionMap;
 134                         if (propertyExceptions == null) {
 135                                 exceptionMap = new TreeMap<String, Exception>();
 136                                 propertyExceptions = new ConstantPropertyVariable(parent, NodeRequest.PROPERTY_VALUE_EXCEPTIONS, exceptionMap, null);
 137                                 map.put(NodeRequest.PROPERTY_VALUE_EXCEPTIONS, propertyExceptions);
 138                         } else {
 139                                 try {
 140                                                 exceptionMap = propertyExceptions.getValue(graph);
 141                                         } catch (DatabaseException e1) {
 142                                                 Logger.defaultLogError(e1);
 143                                                 return;
 144                                         }
 145                         }
 146                         String label = name;
 147                         try {
 148                                 label = property.getLabel(graph);
 149                         } catch (DatabaseException e2) {
 150
 151                         }
 152                         exceptionMap.put(label, e);
 153                 }
 154         }
 155
 156         @Override
 157         public Variable getVariable(ReadGraph graph, Variable context, String name) throws DatabaseException {
 158             return All.getStandardPropertyDomainPropertyVariableFromValue(graph, context, name);
 159         }
 160
 161         @Override
 162         public Map<String, Variable> getVariables(final ReadGraph graph, Variable context, Map<String, Variable> map) throws DatabaseException {
 163
 164             if(map == null) map = new HashMap<String,Variable>();
 165
 166             Variable parent = context.getParent(graph);
 167
 168             DocumentationResource DOC = DocumentationResource.getInstance(graph);
 169
 170             if(parent instanceof StandardProceduralChildVariable) {
 171
 172                 StandardProceduralChildVariable procedural = (StandardProceduralChildVariable)parent;
 173                 for(Variable property : procedural.getProperties(graph/*, DocumentationResource.URIs.Document_AttributeRelation*/)) {
 174                     if(property instanceof StandardAssertedGraphPropertyVariable) {
 175                         StandardAssertedGraphPropertyVariable ass = (StandardAssertedGraphPropertyVariable)property;
 176                         if("dataDefinitions".equals(ass.property.name) || "commands".equals(ass.property.name)  || "pollingFunction".equals(ass.property.name)) {
 177                                 storePropertyValueAndExceptions(graph, parent, ass.property.name, property, map);
 178                         }
 179                         continue;
 180                     }
 181                     Resource predicate = property.getPossiblePredicateResource(graph);
 182                     if(predicate != null) {
 183                         PropertyInfo info = graph.syncRequest(new PropertyInfoRequest(predicate));
 184                         if(info.hasClassification(DocumentationResource.URIs.Document_AttributeRelation)) {
 185                                 Variable prop = parent.getProperty(graph, predicate);
 186                             storePropertyValueAndExceptions(graph, parent, info.name, prop, map);
 187                         }
 188                     }
 189                 }
 190
 191             } else {
 192
 193                 Resource parentRes = parent.getRepresents(graph);
 194                 {
 195                         Variable prop = new StandardGraphPropertyVariable(graph, parent, DOC.Properties_commands);
 196                         storePropertyValueAndExceptions(graph, parent, "commands", prop, map);
 197                 }
 198
 199                 if (graph.getPossibleObject(parentRes, DOC.Properties_dataDefinitions) != null) {
 200                         Variable prop = new StandardGraphPropertyVariable(graph, parent, DOC.Properties_dataDefinitions);
 201                         storePropertyValueAndExceptions(graph, parent, "dataDefinitions", prop, map);
 202                 }
 203
 204                 DirectQuerySupport dqs = graph.getService(DirectQuerySupport.class);
 205                 //PrimitivePropertyStatementsProcedure foo = new PrimitivePropertyStatementsProcedure();
 206
 207                 DirectStatements ds = dqs.getDirectPersistentStatements(graph, parentRes);
 208
 209                 for(Statement stm : ds) {
 210                     Resource predicate = stm.getPredicate();
 211                     PropertyInfo info = graph.syncRequest(new PropertyInfoRequest(predicate));
 212
 213                     if(info.isHasProperty && info.hasClassification(DocumentationResource.URIs.Document_AttributeRelation)) {
 214                         Variable prop = new StandardGraphPropertyVariable(graph, parent, predicate);
 215                         storePropertyValueAndExceptions(graph, parent, info.name, prop, map);
 216                     } else {
 217                         Resource definition = graph.getPossibleObject(predicate, DOC.Document_definesAttributeRelation);
 218                         if(definition != null) {
 219                                 PropertyInfo info2 = graph.syncRequest(new PropertyInfoRequest(definition));
 220                                 Variable prop = new StandardGraphPropertyVariable(graph, parent, definition);
 221                             map.put(info2.name, new PrimitiveValueVariable(parent, info2.name, prop));
 222                         }
 223                     }
 224                 }
 225             }
 226             return map;
 227
 228         }
 229
 230     };
 231
 232     @SCLValue(type = "VariableMap")
 233     public static VariableMap inputSpaceChildren = new VariableMapImpl() {
 234
 235         private Variable getProxy(ReadGraph graph, Variable context) throws DatabaseException {
 236             Variable root = Variables.getRootVariable(graph);
 237             return new DocumentProxyChildVariable(context, context, root, ProxyChildVariable.CONTEXT_BEGIN);
 238         }
 239
 240         @Override
 241         public Variable getVariable(ReadGraph graph, Variable context, String name) throws DatabaseException {
 242
 243             if(ProxyChildVariable.CONTEXT_BEGIN.equals(name)) return getProxy(graph, context);
 244             return All.standardChildDomainChildren.getVariable(graph, context, name);
 245
 246         }
 247
 248         @Override
 249         public Map<String, Variable> getVariables(ReadGraph graph, Variable context, Map<String, Variable> map) throws DatabaseException {
 250
 251             map = All.standardChildDomainChildren.getVariables(graph, context, map);
 252             if(map == null) map = new THashMap<String,Variable>();
 253             map.put(ProxyChildVariable.CONTEXT_BEGIN, getProxy(graph, context));
 254             return map;
 255
 256         }
 257
 258     };
 259
 260     static class DocumentProxyChildVariable extends ProxyChildVariable {
 261
 262         public DocumentProxyChildVariable(Variable base, Variable parent, Variable other, String name) {
 263             super(base, parent, other, name);
 264         }
 265
 266         @Override
 267         public Variable create(Variable base, Variable parent, Variable other, String name) {
 268             return new DocumentProxyChildVariable(base, parent, other, name);
 269         }
 270
 271         public Variable getPossibleChild(ReadGraph graph, String name) throws DatabaseException {
 272
 273                 if(CONTEXT_END.equals(name)) {
 274                 if(other instanceof ProxyChildVariable) {
 275                         // The context is also a proxy - let it do the job
 276                     return super.getPossibleChild(graph, name);
 277                 } else {
 278                         return new RootVariable(this, base.getRepresents(graph));
 279                 }
 280                 }
 281
 282             return super.getPossibleChild(graph, name);
 283
 284         }
 285
 286         public Collection<Variable> getChildren(ReadGraph graph) throws DatabaseException {
 287
 288             Collection<Variable> result = super.getChildren(graph);
 289             if(!(base instanceof ProxyChildVariable)) {
 290                 result.add(new RootVariable(this, base.getRepresents(graph)));
 291             }
 292             return result;
 293
 294         }
 295
 296     }
 297
 298     static class RootVariable extends StandardGraphChildVariable {
 299
 300         public RootVariable(DocumentProxyChildVariable parent, Resource resource) {
 301             super(parent, null, resource);
 302         }
 303
 304         @Override
 305         public String getName(ReadGraph graph) throws DatabaseException {
 306             return ProxyChildVariable.CONTEXT_END;
 307         }
 308
 309         @SuppressWarnings("deprecation")
 310         @Override
 311         public Variable getNameVariable(ReadGraph graph) throws DatabaseException {
 312             return new ConstantPropertyVariable(this, Variables.NAME, ProxyChildVariable.CONTEXT_END, Bindings.STRING);
 313         }
 314
 315     }
 316
 317     @SCLValue(type = "ReadGraph -> Resource -> Variable -> Variable")
 318     public static Variable input(ReadGraph graph, Resource converter, Variable context) throws DatabaseException {
 319         Variable session = graph.syncRequest(new ProxySessionRequest(context));
 320         DocumentationResource DOC = DocumentationResource.getInstance(graph);
 321         String uri = session.getPossiblePropertyValue(graph, DOC.Session_inputURI);
 322         if(uri == null) {
 323                 // TODO HAXX - Please fix this
 324                 // we have no URI so this probably means that someone has inserted a non-session
 325                 // into the proxy variable => return that instead
 326                 return session;
 327         }
 328         return Variables.getVariable(graph, uri);
 329     }
 330
 331     public static Variable stateVariable(ReadGraph graph, Variable self) throws DatabaseException {
 332         Variable session = graph.syncRequest(new ProxySessionRequest(self));
 333         if (session == null)
 334                 throw new DatabaseException("No state for " + self.getURI(graph));
 335         return session.getPossibleChild(graph, "__scl__");
 336     }
 337
 338     @SCLValue(type = "ReadGraph -> Resource -> Variable -> Variable")
 339     public static Variable state(ReadGraph graph, Resource converter, Variable context) throws DatabaseException {
 340         Variable session = graph.syncRequest(new ProxySessionRequest(context));
 341         if (session == null)
 342             throw new DatabaseException("No state for " + context.getURI(graph));
 343         return session.getPossibleChild(graph, "__scl__");
 344     }
 345
 346     @SCLValue(type = "ReadGraph -> Resource -> Variable -> Variable")
 347     public static Variable icstate(ReadGraph graph, Resource converter, Variable context) throws DatabaseException {
 348         Variable session = graph.syncRequest(new ProxySessionRequest(context));
 349         return session.getPossibleChild(graph, "__icstate__");
 350     }
 351
 352     @SCLValue(type = "ReadGraph -> Resource -> Variable -> Variable")
 353     public static Variable session(ReadGraph graph, Resource converter, Variable context) throws DatabaseException {
 354         return graph.syncRequest(new ProxySessionRequest(context));
 355     }
 356
 357     @SCLValue(type = "ReadGraph -> Resource -> Variable -> Variable")
 358     public static Variable experiment(ReadGraph graph, Resource converter, Variable context) throws DatabaseException {
 359         // Try if experiment (run) has been used as the input
 360         Variable var = input(graph, converter, context);
 361         SimulationResource SR = SimulationResource.getInstance(graph);
 362         while(var != null && !graph.isInstanceOf(var.getRepresents(graph), SR.Run)) {
 363             var = var.getParent(graph);
 364         }
 365
 366         if(var != null) {
 367             IExperiment exp = getExperiment(graph, var);
 368             if(exp == null)
 369                 return null;
 370         }
 371
 372         return var;
 373     }
 374
 375     @SCLValue(type = "ReadGraph -> Resource -> Variable -> Variable")
 376     public static Variable model(ReadGraph graph, Resource converter, Variable context) throws DatabaseException {
 377         Variable var = input(graph, converter, context);
 378         ModelingResources MOD = ModelingResources.getInstance(graph);
 379         while(var != null && !graph.isInstanceOf(var.getRepresents(graph), MOD.StructuralModel)) {
 380             var = var.getParent(graph);
 381         }
 382
 383         return var;
 384     }
 385
 386     private static Collection<Variable> getBroadcasted(ReadGraph graph, Variable target) throws DatabaseException {
 387
 388         ArrayList<Variable> result = new ArrayList<Variable>();
 389
 390         DocumentationResource DOC = DocumentationResource.getInstance(graph);
 391
 392         Variable broadcasted = target.getPossibleProperty(graph, DOC.Relations_broadcasted);
 393         if(broadcasted != null) result.add(broadcasted);
 394
 395         for(Variable child : DocumentServerUtils.getChildrenInOrdinalOrder(graph, target)) {
 396                 result.addAll(getBroadcasted(graph, child));
 397         }
 398
 399         return result;
 400
 401     }
 402
 403     private static List<Command> getCommands(ReadGraph graph, Collection<Variable> commandVariables, String trigger, CommandContext constants, boolean broadcast) throws DatabaseException {
 404
 405         if(commandVariables.isEmpty()) return Collections.emptyList();
 406
 407         String t = trigger;
 408         TreeMap<Integer, List<Command>> sequences = new TreeMap<Integer, List<Command>>();
 409
 410         DocumentationResource DOC = DocumentationResource.getInstance(graph);
 411
 412         int count = 0;
 413         for (Variable c : commandVariables) {
 414
 415             if(trigger == null)
 416                 t = c.getName(graph);
 417
 418             Connection conn = c.getValue(graph);
 419             Variable targetConnectionPoint = DocumentServerUtils.getPossibleCommandTriggerConnectionPoint(graph, c, conn);
 420             if (targetConnectionPoint != null) {
 421                 Variable target = targetConnectionPoint.getParent(graph);
 422                 if (target != null) {
 423
 424                     Boolean enabled = target.getPossiblePropertyValue(graph, DOC.Properties_exists, Bindings.BOOLEAN);
 425                     if(enabled != null && !enabled) continue;
 426
 427                     Integer ordinal;
 428                     if (broadcast) {
 429                         ordinal = ++count;
 430                     } else {
 431                         ordinal = 1;
 432                             try {
 433                                 String o = c.getPossiblePropertyValue(graph, "ordinal");
 434                                 if(o != null)
 435                                     ordinal = Integer.parseInt(o);
 436                             } catch (NumberFormatException e) {}
 437                     }
 438
 439                     String constantKey = target.getPossiblePropertyValue(graph, "constantKey");
 440                     String constantValue = target.getPossiblePropertyValue(graph, "constantValue");
 441
 442                     CommandContextMutable newConstants = (CommandContextMutable)constants;
 443                     if(constantKey != null && constantValue != null) {
 444                         if(!constantKey.isEmpty()) {
 445                                 newConstants = new CommandContextImpl().merge(constants);
 446                                 newConstants.putString(constantKey, constantValue);
 447                         }
 448                     }
 449
 450                     String requiredKey = target.getPossiblePropertyValue(graph, "requiredKey");
 451                     if(requiredKey != null && !requiredKey.isEmpty()) {
 452                         if (newConstants == constants) {
 453                                 newConstants = new CommandContextImpl().merge(constants);
 454                         }
 455                                 newConstants.putRow(CommandContext.REQUIRED_KEYS, Collections.<Object>singletonList(requiredKey));
 456                     }
 457
 458                     String forbiddenKey = target.getPossiblePropertyValue(graph, "forbiddenKey");
 459                     if(forbiddenKey != null && !forbiddenKey.isEmpty()) {
 460                         if (newConstants == constants) {
 461                                 newConstants = new CommandContextImpl().merge(constants);
 462                         }
 463                                 newConstants.putRow(CommandContext.FORBIDDEN_KEYS, Collections.<Object>singletonList(forbiddenKey));
 464                     }
 465
 466                     if(DOC.Relations_broadcast.equals(targetConnectionPoint.getPredicateResource(graph))) {
 467
 468                         // This is a broadcast terminal of a container
 469                         List<Command> broadcastCommands = getCommands(graph, getBroadcasted(graph, target), t, newConstants, true);
 470                         sequences.put(ordinal, broadcastCommands);
 471
 472                     } else {
 473
 474                         Command command = new Command(DocumentServerUtils.getId(graph, target), t,
 475                                         targetConnectionPoint.getName(graph), newConstants);
 476                         sequences.put(ordinal, Collections.singletonList(command));
 477
 478                     }
 479
 480                 }
 481             }
 482         }
 483
 484         List<Command> commands = new ArrayList<Command>();
 485         for (List<Command> commandList : sequences.values()) {
 486                 for (Command command : commandList) {
 487                         commands.add(command);
 488                 }
 489         }
 490
 491         return commands;
 492     }
 493
 494     /**
 495      * Commands
 496      *
 497      * @param graph
 498      * @param variable
 499      * @return
 500      * @throws DatabaseException
 501      */
 502     public static List<Command> commandList(ReadGraph graph, Variable variable) throws DatabaseException {
 503         return getCommands(graph, DocumentServerUtils.getTriggerCommands(graph, variable.getParent(graph)), null, new CommandContextImpl(), false);
 504     }
 505
 506     /**
 507      * Data definitions
 508      *
 509      * @param graph
 510      * @param variable
 511      * @return
 512      * @throws DatabaseException
 513      */
 514     public static List<DataDefinition> dataDefinitions(ReadGraph graph, Variable variable) throws DatabaseException {
 515         DocumentationResource DOC = DocumentationResource.getInstance(graph);
 516         ArrayList<DataDefinition> dataDefinitions = new ArrayList<DataDefinition>();
 517         // Find data definition connections
 518         for (Variable dataDefinitionRelation : DocumentServerUtils.getDataDefinitions(graph, variable.getParent(graph))) {
 519             Connection dataDefinitionConnection = dataDefinitionRelation.getValue(graph);
 520             // Find data the other end of definition connection
 521             Collection<Variable> dataDefinitionProviders = DocumentServerUtils.getPossibleOtherConnectionPoints(graph,
 522                     dataDefinitionRelation, dataDefinitionConnection);
 523             if (dataDefinitionProviders != null) {
 524
 525                 for(Variable dataDefinitionProvider : dataDefinitionProviders) {
 526
 527                     Variable dataDefinition = dataDefinitionProvider.getParent(graph);
 528                     if (dataDefinition != null) {
 529                         // Found other end. Is should contain ONE data
 530 // definition connection to the actual data
 531                         Collection<Variable> dataCollection = DocumentServerUtils.getDataRelations(graph, dataDefinition);
 532                         if (dataCollection.size() == 1) {
 533                             Variable dataRelation = dataCollection.iterator().next();
 534                             Connection dataConnection = dataRelation.getValue(graph);
 535                             // Find data the other end of definition connection
 536                             Variable dataConnectionPoint = DocumentServerUtils.getPossibleOtherConnectionPoint(graph,
 537                                     dataRelation, dataConnection);
 538                             if (dataConnectionPoint != null) {
 539                                 Variable data = dataConnectionPoint.getParent(graph);
 540                                 Resource type = dataDefinition.getPossibleType(graph, DOC.Components_Component);
 541
 542                                 if (graph.isInheritedFrom(type, DOC.Components_DefVar)) {
 543
 544                                         String sourceProperty = dataDefinition.getPropertyValue(graph, DOC.Properties_source,
 545                                                 Bindings.STRING);
 546                                         String targetProperty = dataDefinition.getPropertyValue(graph, DOC.Properties_target,
 547                                                 Bindings.STRING);
 548
 549                                         dataDefinitions.add(new DataDefinition(DocumentServerUtils.getId(graph, data),
 550                                                         sourceProperty, targetProperty));
 551
 552                                 } else if (graph.isInheritedFrom(type, DOC.Components_DefVars)) {
 553
 554                                         List<String> sourcesProperty = toList(dataDefinition.getPropertyValue(graph, DOC.Properties_sources), String.class);
 555                                         List<String> targetsProperty = toList(dataDefinition.getPropertyValue(graph, DOC.Properties_targets), String.class);
 556
 557                                         for (int i = 0; i < Math.min(sourcesProperty.size(), targetsProperty.size()); i++) {
 558                                                 dataDefinitions.add(new DataDefinition(DocumentServerUtils.getId(graph, data),
 559                                                         sourcesProperty.get(i), targetsProperty.get(i)));
 560                                         }
 561                                 }
 562                             }
 563                         }
 564                     }
 565                 }
 566             }
 567         }
 568         return dataDefinitions;
 569     }
 570
 571     @SuppressWarnings("unchecked")
 572         private static <T> List<T> toList(Object o, Class<T> c) {
 573         List<T> result = null;
 574         if (o instanceof List) {
 575                 return (List<T>)o;
 576         } else if (o instanceof Object[]) {
 577                 result = new ArrayList<T>(((Object[])o).length);
 578                 for (T item : (T[])o) {
 579                         result.add(item);
 580                 }
 581                 return result;
 582         } else {
 583                 return Collections.<T>emptyList();
 584         }
 585     }
 586
 587     @Deprecated
 588     public static AbstractEventHandler emptyOnClick(ReadGraph graph) throws DatabaseException {
 589         return new EventHandler() {
 590             @Override
 591             public ServerResponse handle(ReadGraph graph, CommandContext parameters) throws DatabaseException {
 592                 return null;
 593             }
 594         };
 595     }
 596
 597     @Deprecated
 598     public static AbstractEventHandler writeEventHandler(ReadGraph graph, final Variable variable, final Function fn) {
 599
 600         final Session session = graph.getSession();
 601
 602         return new AbstractEventHandler() {
 603
 604                         @Override
 605                         public CommandResult handle(final CommandContext parameters) {
 606
 607                 final SCLReportingHandler printer = (SCLReportingHandler)SCLContext.getCurrent().get(SCLReportingHandler.REPORTING_HANDLER);
 608
 609                 try {
 610
 611                                         String result = session.sync(new WriteResultRequest<String>() {
 612
 613                                             @Override
 614                                             public String perform(WriteGraph graph) throws DatabaseException {
 615                                                 SCLContext sclContext = SCLContext.getCurrent();
 616                                                 Object oldGraph = sclContext.put("graph", graph);
 617                                                 Object oldPrinter = sclContext.put(SCLReportingHandler.REPORTING_HANDLER, printer);
 618                                                 try {
 619                                                     Function1<String,String> pf = new FunctionImpl1<String,String>() {
 620                                                         @Override
 621                                                         public String apply(String key) {
 622                                                             return parameters.getString(key);
 623                                                         }
 624                                                     };
 625                                                     Object response = (String)fn.apply(variable, pf);
 626                                                     if(response instanceof String) {
 627                                                         return (String)response;
 628                                                     }
 629                                                     return null;
 630                                                 } finally {
 631                                                         sclContext.put("graph", oldGraph);
 632                                                         sclContext.put(SCLReportingHandler.REPORTING_HANDLER, oldPrinter);
 633                                                 }
 634
 635                                             }
 636
 637                                         });
 638
 639                         return new SuccessResponse(result);
 640
 641                                 } catch (Throwable e) {
 642                                         Logger.defaultLogError(e);
 643                                         return new org.simantics.document.server.serverResponse.Error(e.getMessage());
 644                                 }
 645
 646                         }
 647
 648         };
 649     }
 650
 651     @Deprecated
 652     public static AbstractEventHandler readEventHandler(ReadGraph graph, final Variable variable, final Function fn) {
 653
 654         final Session session = graph.getSession();
 655
 656         return new AbstractEventHandler() {
 657
 658                         @Override
 659                         public CommandResult handle(final CommandContext parameters) {
 660
 661                 final SCLReportingHandler printer = (SCLReportingHandler)SCLContext.getCurrent().get(SCLReportingHandler.REPORTING_HANDLER);
 662
 663                 try {
 664
 665                                         String result = session.sync(new UniqueRead<String>() {
 666
 667                                             @Override
 668                                             public String perform(ReadGraph graph) throws DatabaseException {
 669                                                 SCLContext sclContext = SCLContext.getCurrent();
 670                                                 Object oldGraph = sclContext.put("graph", graph);
 671                                                 Object oldPrinter = sclContext.put(SCLReportingHandler.REPORTING_HANDLER, printer);
 672                                                 try {
 673                                                     Function1<String,String> pf = new FunctionImpl1<String,String>() {
 674                                                         @Override
 675                                                         public String apply(String key) {
 676                                                             return parameters.getString(key);
 677                                                         }
 678                                                     };
 679                                                     Object response = (String)fn.apply(variable, pf);
 680                                                     if(response instanceof String) {
 681                                                         return (String)response;
 682                                                     }
 683                                                     return null;
 684                                                 } finally {
 685                                                         sclContext.put("graph", oldGraph);
 686                                                         sclContext.put(SCLReportingHandler.REPORTING_HANDLER, oldPrinter);
 687                                                 }
 688
 689                                             }
 690
 691                                         });
 692
 693                         return new SuccessResponse(result);
 694
 695                                 } catch (Throwable e) {
 696                                         Logger.defaultLogError(e);
 697                                         return new org.simantics.document.server.serverResponse.Error(e.getMessage());
 698                                 }
 699
 700                         }
 701
 702         };
 703     }
 704
 705     @Deprecated
 706     public static AbstractEventHandler readEventHandler2(ReadGraph graph, final Function fn) {
 707
 708         final Session session = graph.getSession();
 709
 710         return new AbstractEventHandler() {
 711
 712                         @Override
 713                         public CommandResult handle(final CommandContext parameters) {
 714
 715                 final SCLReportingHandler printer = (SCLReportingHandler)SCLContext.getCurrent().get(SCLReportingHandler.REPORTING_HANDLER);
 716
 717                 try {
 718
 719                         CommandResult result = session.sync(new UniqueRead<CommandResult>() {
 720
 721                                             @Override
 722                                             public CommandResult perform(ReadGraph graph) throws DatabaseException {
 723                                                 SCLContext sclContext = SCLContext.getCurrent();
 724                                                 Object oldGraph = sclContext.put("graph", graph);
 725                                                 Object oldPrinter = sclContext.put(SCLReportingHandler.REPORTING_HANDLER, printer);
 726                                                 try {
 727                                                     Object response = fn.apply(parameters);
 728                                                     if(response instanceof CommandResult) {
 729                                                         return (CommandResult)response;
 730                                                     }
 731                                                     return null;
 732                                                 } finally {
 733                                                         sclContext.put("graph", oldGraph);
 734                                                         sclContext.put(SCLReportingHandler.REPORTING_HANDLER, oldPrinter);
 735                                                 }
 736
 737                                             }
 738
 739                                         });
 740
 741                         return result;
 742
 743                                 } catch (Throwable e) {
 744                                         Logger.defaultLogError(e);
 745                                         return new org.simantics.document.server.serverResponse.Error(e.getMessage());
 746                                 }
 747
 748                         }
 749
 750         };
 751     }
 752
 753     public static AbstractEventHandler responseHandler(ReadGraph graph, Variable self, String function) throws DatabaseException {
 754
 755         Variable anyFunction = self.browse(graph, ".#" + function);
 756         if(anyFunction == null) return null;
 757
 758         final List<TCon> effects = ServerSCLHandlerValueRequest.getEffects(graph, anyFunction);
 759
 760         Function1<CommandContext, CommandResult> fn = anyFunction.getValue(graph);
 761         //String expression = anyFunction.getPropertyValue(graph, "expression");
 762
 763         final Session session = graph.getSession();
 764
 765         return new AbstractResponseHandler(fn) {
 766
 767                 private String formatError(RequestProcessor proc, Throwable t) {
 768
 769                         try {
 770
 771                                         return proc.syncRequest(new UniqueRead<String>() {
 772
 773                                                 @Override
 774                                                 public String perform(ReadGraph graph) throws DatabaseException {
 775                                                         Variable proxy = ProxyVariables.proxyVariableRoot(graph, anyFunction);
 776                                                         String uri2 = proxy.getURI(graph);
 777                                                         String uri = self.getParent(graph).getURI(graph);
 778
 779                                                         String path = uri.substring(uri2.length());
 780
 781                                                         String expr = anyFunction.getPossiblePropertyValue(graph, "expression");
 782                                                         StringBuilder message = new StringBuilder();
 783                                                         message.append("Handler execution failed\n");
 784                                                         message.append(" handler=" + path + "\n");
 785                                                         message.append(" expression=" + expr + "\n");
 786                                                         message.append(" message=" + t.getMessage() + "\n");
 787
 788                                                         StringWriter sw = new StringWriter();
 789                                                         t.printStackTrace(new PrintWriter(sw));
 790                                                         message.append(" stack trace=" + sw);
 791
 792                                                         return message.toString();
 793                                                 }
 794
 795                                         });
 796
 797                                 } catch (DatabaseException e) {
 798
 799                                         return e.getMessage();
 800
 801                                 }
 802
 803                 }
 804
 805                         @Override
 806                         public CommandResult handle(final CommandContext parameters) {
 807
 808                                 IConsole console = parameters.getValue("__console__");
 809                                 SCLReportingHandler printer = (console != null) ? new ConsoleSCLReportingHandler(console)
 810                                                 : (SCLReportingHandler) SCLContext.getCurrent().get(SCLReportingHandler.REPORTING_HANDLER);
 811
 812                 try {
 813
 814                         Object result = null;
 815                         if(effects.contains(Types.WRITE_GRAPH)) {
 816
 817                                 result = session.syncRequest(new WriteResultRequest<Object>() {
 818
 819                                                         @Override
 820                                                         public Object perform(WriteGraph graph)
 821                                                                         throws DatabaseException {
 822                                                 SCLContext sclContext = SCLContext.getCurrent();
 823                                                 Object oldGraph = sclContext.put("graph", graph);
 824                                                 Object oldPrinter = sclContext.put(SCLReportingHandler.REPORTING_HANDLER, printer);
 825                                                 try {
 826                                                         return fn.apply(parameters);
 827                                                 } finally {
 828                                                         sclContext.put("graph", oldGraph);
 829                                                         sclContext.put(SCLReportingHandler.REPORTING_HANDLER, oldPrinter);
 830                                                 }
 831
 832                                                         }
 833                                 });
 834
 835                         } else if(effects.contains(Types.READ_GRAPH)) {
 836
 837                                 result = session.sync(new UniqueRead<Object>() {
 838
 839                                         @Override
 840                                         public Object perform(ReadGraph graph) throws DatabaseException {
 841
 842                                                 SCLContext sclContext = SCLContext.getCurrent();
 843                                                 Object oldGraph = sclContext.put("graph", graph);
 844                                                 Object oldPrinter = sclContext.put(SCLReportingHandler.REPORTING_HANDLER, printer);
 845
 846                                                 try {
 847                                                         return fn.apply(parameters);
 848                                                 } finally {
 849                                                         sclContext.put("graph", oldGraph);
 850                                                         sclContext.put(SCLReportingHandler.REPORTING_HANDLER, oldPrinter);
 851                                                 }
 852
 853                                         }
 854                                 });
 855
 856                         } else {
 857
 858                                                 SCLContext sclContext = SCLContext.getCurrent();
 859                                                 Object oldPrinter = sclContext.put(SCLReportingHandler.REPORTING_HANDLER, printer);
 860                                                 try {
 861                                                         result = fn.apply(parameters);
 862                                                 } finally {
 863                                                         sclContext.put(SCLReportingHandler.REPORTING_HANDLER, oldPrinter);
 864                                                 }
 865
 866                         }
 867
 868                         if (result instanceof org.simantics.document.server.serverResponse.Error) {
 869                                 return (CommandResult)result;
 870                         }
 871
 872                         if (result instanceof CommandResult) {
 873                                 return (CommandResult)result;
 874                         } else {
 875                                 CommandContextMutable assignments = new CommandContextImpl();
 876                                 assignments.putValue("result", result);
 877                                 return new ServerResponse(200, "", assignments);
 878                         }
 879
 880                                 } catch (Throwable e) {
 881                                         return new org.simantics.document.server.serverResponse.Error(formatError(Simantics.getSession(), e));
 882                                 }
 883
 884                         }
 885
 886         };
 887     }
 888
 889     @Deprecated
 890     public static AbstractEventHandler writeEventHandler2(ReadGraph graph, final Function fn) {
 891
 892         final Session session = graph.getSession();
 893
 894         return new AbstractEventHandler() {
 895
 896                         @Override
 897                         public CommandResult handle(final CommandContext parameters) {
 898
 899                 final SCLReportingHandler printer = (SCLReportingHandler)SCLContext.getCurrent().get(SCLReportingHandler.REPORTING_HANDLER);
 900
 901                 try {
 902
 903                         CommandResult result = session.syncRequest(new WriteResultRequest<CommandResult>() {
 904
 905                                             @Override
 906                                             public CommandResult perform(WriteGraph graph) throws DatabaseException {
 907                                                 SCLContext sclContext = SCLContext.getCurrent();
 908                                                 Object oldGraph = sclContext.put("graph", graph);
 909                                                 Object oldPrinter = sclContext.put(SCLReportingHandler.REPORTING_HANDLER, printer);
 910                                                 try {
 911                                                     Object response = fn.apply(parameters);
 912                                                     if(response instanceof CommandResult) {
 913                                                         return (CommandResult)response;
 914                                                     }
 915                                                     return null;
 916                                                 } finally {
 917                                                         sclContext.put("graph", oldGraph);
 918                                                         sclContext.put(SCLReportingHandler.REPORTING_HANDLER, oldPrinter);
 919                                                 }
 920
 921                                             }
 922
 923                                         });
 924
 925                         return result;
 926
 927                                 } catch (Throwable e) {
 928                                         Logger.defaultLogError(e);
 929                                         return new org.simantics.document.server.serverResponse.Error(e.getMessage());
 930                                 }
 931
 932                         }
 933
 934         };
 935     }
 936
 937
 938     @Deprecated
 939     public static AbstractEventHandler eventHandler2(ReadGraph graph, final Function fn) {
 940
 941         return new AbstractEventHandler() {
 942
 943                         @Override
 944                         public CommandResult handle(final CommandContext parameters) {
 945
 946                 final SCLReportingHandler printer = (SCLReportingHandler)SCLContext.getCurrent().get(SCLReportingHandler.REPORTING_HANDLER);
 947
 948                 try {
 949
 950                         SCLContext sclContext = SCLContext.getCurrent();
 951                         Object oldPrinter = sclContext.put(SCLReportingHandler.REPORTING_HANDLER, printer);
 952                         try {
 953                                 Object response = fn.apply(parameters);
 954                                 if(response instanceof CommandResult) {
 955                                         return (CommandResult)response;
 956                                 }
 957                                 return null;
 958                         } finally {
 959                                 sclContext.put(SCLReportingHandler.REPORTING_HANDLER, oldPrinter);
 960                         }
 961
 962                                 } catch (Throwable e) {
 963                                         Logger.defaultLogError(e);
 964                                         return new org.simantics.document.server.serverResponse.Error(e.getMessage());
 965                                 }
 966
 967                         }
 968
 969         };
 970     }
 971
 972     @Deprecated
 973     public static AbstractEventHandler eventHandler(ReadGraph graph, final Function fn) {
 974
 975         return new AbstractEventHandler() {
 976
 977                         @Override
 978                         public CommandResult handle(final CommandContext parameters) {
 979
 980                 final SCLReportingHandler printer = (SCLReportingHandler)SCLContext.getCurrent().get(SCLReportingHandler.REPORTING_HANDLER);
 981
 982                 try {
 983
 984                         String result = "";
 985
 986                                 SCLContext sclContext = SCLContext.getCurrent();
 987                                 Object oldPrinter = sclContext.put(SCLReportingHandler.REPORTING_HANDLER, printer);
 988                                 try {
 989                                     Function1<String,String> pf = new FunctionImpl1<String,String>() {
 990                                         @Override
 991                                         public String apply(String key) {
 992                                             return parameters.getString(key);
 993                                         }
 994                                     };
 995                                     Object response = (String)fn.apply(pf);
 996                                     if(response instanceof String) {
 997                                         result = (String)response;
 998                                     }
 999                                 } finally {
1000                                         sclContext.put(SCLReportingHandler.REPORTING_HANDLER, oldPrinter);
1001                                 }
1002
1003                         return new SuccessResponse(result);
1004
1005                                 } catch (Throwable e) {
1006                                         Logger.defaultLogError(e);
1007                                         return new org.simantics.document.server.serverResponse.Error(e.getMessage());
1008                                 }
1009
1010                         }
1011
1012         };
1013     }
1014
1015     @SCLValue(type = "ReadGraph -> Resource -> Variable -> a")
1016     public static Object sclValue(ReadGraph graph, Resource converter, Variable context) throws DatabaseException {
1017         return ServerSCLValueRequest.compileAndEvaluate(graph, context);
1018     }
1019
1020     @SCLValue(type = "ReadGraph -> Resource -> Variable -> a")
1021     public static Object sclHandlerValue(ReadGraph graph, Resource converter, Variable context) throws DatabaseException {
1022         return ServerSCLHandlerValueRequest.compileAndEvaluate(graph, context);
1023     }
1024
1025     @SCLValue(type = "ReadGraph -> Resource -> Resource -> ComponentNamingStrategy")
1026     public static ComponentNamingStrategy componentNamingStrategy(ReadGraph graph, Resource converter, Resource context) throws DatabaseException {
1027         return createComponentNamingStrategy(graph);
1028     }
1029
1030     public static CaseInsensitiveComponentFunctionNamingStrategy createComponentNamingStrategy(ReadGraph graph) throws DatabaseException {
1031         Layer0X L0X = Layer0X.getInstance(graph);
1032         @SuppressWarnings({ "unchecked", "rawtypes" })
1033         final Function dependencies = graph.syncRequest(new Adapter(L0X.DependencyResources, Function.class), TransientCacheListener.<Function>instance());
1034         @SuppressWarnings("rawtypes")
1035         Function moduleNameFunction = new FunctionImpl4<ReadGraph, Resource, String, Integer, List<Map<String, Object>>>() {
1036             @Override
1037             public Object apply(ReadGraph p0, Resource p1, String p2) {
1038                 return apply(p0, p1, p2);
1039             }
1040             @SuppressWarnings("unchecked")
1041             @Override
1042             public List<Map<String, Object>> apply(ReadGraph graph, Resource model, String search, Integer maxResults) {
1043                 return (List<Map<String, Object>>)dependencies.apply(graph, model, search, maxResults);
1044             }
1045         };
1046         return new CaseInsensitiveComponentFunctionNamingStrategy("%s%02d", moduleNameFunction);
1047     }
1048
1049     public static IExperiment getExperiment(ReadGraph graph, Variable variable) throws DatabaseException {
1050         if (variable == null)
1051             return null;
1052
1053         SimulationResource SIMU = SimulationResource.getInstance(graph);
1054
1055         Variable var = variable;
1056         Resource represents = var.getRepresents(graph);
1057         Resource activeRun = null;
1058         if (represents != null && graph.isInstanceOf(represents, SIMU.Run)) {
1059             activeRun = represents;
1060         }
1061
1062         IProject project = Simantics.peekProject();
1063         if (activeRun != null && project != null) {
1064             IExperimentManager expMan = project.getHint(IExperimentManager.KEY_EXPERIMENT_MANAGER);
1065             if (expMan != null)
1066                 return expMan.getExperiment(NameUtils.getSafeName(graph, activeRun));
1067         }
1068
1069         return null;
1070     }
1071
1072     public static CommandContextMutable putTuple(CommandContextMutable context, String key, Object tuple) {
1073         List<Object> list = new ArrayList<Object>();
1074         if (tuple instanceof Tuple) {
1075                 Collections.addAll(list, ((Tuple)tuple).toArray());
1076         } else {
1077                 list.add(tuple);
1078         }
1079         context.putRow(key, list);
1080         return context;
1081     }
1082
1083     public static List<Object> getTuples(CommandContext context, String key) {
1084         List<List<Object>> rows = context.getRows(key);
1085         List<Object> tuples = new ArrayList<Object>();
1086         if (rows != null) {
1087                 for (List<Object> row : rows) {
1088                         switch (row.size()) {
1089                         case 0: tuples.add(Tuple0.INSTANCE); break;
1090                         case 1: tuples.add(row.get(1)); break;
1091                         case 2: tuples.add(new Tuple2(row.get(0), row.get(1))); break;
1092                         case 3: tuples.add(new Tuple3(row.get(0), row.get(1), row.get(2))); break;
1093                         case 4: tuples.add(new Tuple4(row.get(0), row.get(1), row.get(2), row.get(3))); break;
1094                         case 5: tuples.add(new Tuple5(row.get(0), row.get(1), row.get(2), row.get(3), row.get(4))); break;
1095                         }
1096                 }
1097         }
1098         return tuples;
1099     }
1100
1101     public static String printContext(CommandContext context) {
1102         return context.toString();
1103     }
1104
1105     @SCLValue(type = "AbstractEventHandler")
1106     public static AbstractEventHandler emptyEvent = new AbstractEventHandler() {
1107
1108                 @Override
1109                 public CommandResult handle(CommandContext context) {
1110                         return null;
1111                 }
1112
1113     };
1114
1115     public static String sclStateKey(ReadGraph graph, Variable base, Variable self, String ref) throws DatabaseException {
1116
1117         String baseURI = base.getURI(graph);
1118
1119         String selfURI = self.getURI(graph);
1120
1121         String prefix = selfURI.substring(0, selfURI.indexOf(ProxyChildVariable.CONTEXT_BEGIN));
1122         String suffix = selfURI.substring(selfURI.lastIndexOf(ProxyChildVariable.CONTEXT_END) + ProxyChildVariable.CONTEXT_END.length());
1123         String stripped = prefix + suffix;
1124
1125         String relative = Variables.getRelativeRVI(baseURI, stripped);
1126
1127         return Variables.getRVI(relative, ref);
1128
1129     }
1130
1131     public static Variable sclStateVariable(ReadGraph graph, Variable base, Variable self, String ref) throws DatabaseException {
1132
1133         String id = sclStateKey(graph, base, self, ref);
1134
1135         Variable sclVar = base.getPossibleChild(graph, "__scl__");
1136         if(sclVar == null) return null;
1137
1138         return sclVar.getPossibleProperty(graph, id);
1139
1140     }
1141
1142     public static Object sclStateValueOrDefault(ReadGraph graph, Variable base, Variable self, String ref, Object defaultValue) throws DatabaseException {
1143
1144         Variable stateVariable = sclStateVariable(graph, base, self, ref);
1145         if (stateVariable != null) {
1146
1147                 return stateVariable.getValue(graph);
1148
1149         } else {
1150
1151                 return defaultValue;
1152
1153         }
1154     }
1155
1156     public static void setSclStateValue(WriteGraph graph, Variable base, Variable self, String ref, Object value) throws DatabaseException {
1157
1158         String id = sclStateKey(graph, base, self, ref);
1159
1160                 StateRealm realm = (StateRealm) StateSessionManager.getInstance().getOrCreateRealm(graph, base.getURI(graph)+"/__scl__");
1161                 StateNodeManager nodeManager = (StateNodeManager) realm.getNodeManager();
1162                 nodeManager.setState(id, value);
1163
1164     }
1165
1166     public static Object projectComponentState(ReadGraph graph, Variable self, String ref, Object defaultValue) throws DatabaseException {
1167         Resource project = Simantics.getProjectResource();
1168         Variable component = self.getParent(graph);
1169         Variable projectVariable = Variables.getVariable(graph, project);
1170         return sclStateValueOrDefault(graph, projectVariable, component, ref, defaultValue);
1171     }
1172
1173     public static void setProjectComponentState(WriteGraph graph, Variable self, String ref, Object value) throws DatabaseException {
1174         Resource project = Simantics.getProjectResource();
1175         Variable component = self.getParent(graph);
1176         Variable projectVariable = Variables.getVariable(graph, project);
1177         setSclStateValue(graph, projectVariable, component, ref, value);
1178     }
1179
1180     private static Type getSCLType(Object value) throws DatabaseException {
1181         Binding b = Bindings.getBindingUnchecked(value.getClass());
1182         Datatype t = b.type();
1183         if(Datatypes.STRING.equals(t)) return Types.STRING;
1184         if(Datatypes.DOUBLE.equals(t)) return Types.DOUBLE;
1185         throw new DatabaseException("Type not supported");
1186     }
1187
1188     public static List<Variable> documentModelContribution(ReadGraph graph, Resource doc) throws DatabaseException {
1189         Resource project = Simantics.getProjectResource();
1190         ArrayList<Variable> result = new ArrayList<Variable>();
1191         for(Resource model : graph.syncRequest(new ProjectModels(project))) {
1192                 result.add(Variables.getVariable(graph, model));
1193         }
1194         return result;
1195     }
1196
1197     public static String documentModelContributionLabel(ReadGraph graph, Variable var) throws DatabaseException {
1198         return var.getName(graph);
1199     }
1200
1201     public static Object getPropertyValueCached(ReadGraph graph, Variable variable, String name, Binding binding) throws DatabaseException {
1202         Variable property = graph.syncRequest(new VariableProperty(variable, name));
1203         return graph.syncRequest(new VariableValueWithBinding<Object>(property, binding));
1204     }
1205
1206     public static class ParentExistsRequest extends VariableRead<Boolean> {
1207
1208                 public ParentExistsRequest(Variable parent) {
1209                         super(parent);
1210                 }
1211
1212                 @Override
1213                 public Boolean perform(ReadGraph graph) throws DatabaseException {
1214
1215                         Variable existsProperty = variable.getPossibleProperty(graph, "exists");
1216                         if(existsProperty == null) return true;
1217
1218                         Boolean exists = existsProperty.getPossibleValue(graph, Bindings.BOOLEAN);
1219                         if (exists == null || !exists) return false;
1220
1221                 return graph.syncRequest(new ParentExistsRequest(variable.getParent(graph)));
1222
1223                 }
1224
1225     }
1226
1227     public static class PathExistsRequest extends VariableRead<Boolean> {
1228
1229                 public PathExistsRequest(Variable variable) {
1230                         super(variable);
1231                 }
1232
1233                 @Override
1234                 public Boolean perform(ReadGraph graph) throws DatabaseException {
1235
1236                         Variable widget = variable.getParent(graph);
1237
1238                 Boolean exists = widget.getPossiblePropertyValue(graph, "exists");
1239                         if (exists == null || !exists) return false;
1240
1241                 if (!graph.syncRequest(new ParentExistsRequest(widget.getParent(graph)))) return false;
1242
1243                 DocumentationResource DOC = DocumentationResource.getInstance(graph);
1244                 Collection <Variable> cps = widget.getProperties(graph, DocumentationResource.URIs.Relations_parentRelation);
1245                 for (Variable cp : cps) {
1246
1247                         Connection conn = cp.getValue(graph);
1248                                 Variable otherCp = DocumentServerUtils.getPossibleChildConnectionPoint(graph, cp, conn);
1249                                 if (otherCp != null) {
1250                                         Variable parentWidget = otherCp.getParent(graph);
1251                                         if (parentWidget.<Boolean>getPropertyValue(graph, "pathExists")) {
1252                                                 return true;
1253                                         }
1254                                 } else {
1255                                         Variable parentCp = graph.sync(new UnaryRead<Connection, Variable>(conn) {
1256                                     @Override
1257                                     public Variable perform(ReadGraph graph) throws DatabaseException {
1258                                         DocumentationResource DOC = DocumentationResource.getInstance(graph);
1259                                         Collection<VariableConnectionPointDescriptor> descs = parameter.getConnectionPointDescriptors(graph, null);
1260
1261                                                 for(VariableConnectionPointDescriptor desc : descs) {
1262                                                         if (DOC.Relations_partN.equals(desc.getConnectionPointResource(graph))) {
1263                                                                 return desc.getVariable(graph);
1264                                                         }
1265                                                 }
1266                                                 return null;
1267                                     }
1268                                 });
1269                                         if (parentCp != null) {
1270                                                 Variable parentWidget = parentCp.getParent(graph);
1271                                                 if (parentWidget.<Boolean>getPropertyValue(graph, "pathExists")) {
1272                                                         return true;
1273                                                 }
1274                                         }
1275                                 }
1276                         }
1277
1278                         Resource type = widget.getType(graph);
1279                         return graph.isInheritedFrom(type, DOC.Components_ParentlessComponent) ||
1280                                 (graph.isInheritedFrom(type, DOC.DocumentComponent) && cps.isEmpty());
1281                 }
1282     }
1283
1284     @SCLValue(type = "ReadGraph -> Resource -> Variable -> Boolean")
1285     public static boolean pathExists(ReadGraph graph, Resource converter, Variable context) throws DatabaseException {
1286         return graph.syncRequest(new PathExistsRequest(context));
1287     }
1288
1289     public static String compileDocumentSCLValueExpression(ReadGraph graph, Variable context) {
1290         try {
1291             ServerSCLValueRequest.validate(graph, context);
1292             return "";
1293         } catch (Exception e) {
1294             return resolveIssueMessage(e);
1295         }
1296     }
1297
1298     private static String resolveIssueMessage(Exception e) {
1299         if (e instanceof ImportFailureException)
1300             return "";
1301         if (e.getCause() != null && e.getCause() instanceof ImportFailureException)
1302             return "";
1303         if (e instanceof SCLDatabaseException) {
1304             SCLDatabaseException ee = (SCLDatabaseException) e;
1305             return ee.getMessage();
1306         }
1307         if (LOGGER.isDebugEnabled())
1308             LOGGER.debug("", e);
1309         return e.getMessage();
1310     }
1311
1312 }