bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/StandardGraphPropertyVariable.java

   1 package org.simantics.db.layer0.variable;
   2
   3 import java.util.Collection;
   4 import java.util.Collections;
   5 import java.util.HashMap;
   6 import java.util.Map;
   7 import java.util.Set;
   8
   9 import org.simantics.databoard.Bindings;
  10 import org.simantics.databoard.accessor.reference.ChildReference;
  11 import org.simantics.databoard.binding.Binding;
  12 import org.simantics.databoard.binding.impl.ObjectVariantBinding;
  13 import org.simantics.databoard.type.Datatype;
  14 import org.simantics.db.ReadGraph;
  15 import org.simantics.db.Resource;
  16 import org.simantics.db.WriteGraph;
  17 import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;
  18 import org.simantics.db.common.validation.L0Validations;
  19 import org.simantics.db.exception.DatabaseException;
  20 import org.simantics.db.exception.DatatypeNotFoundException;
  21 import org.simantics.db.exception.ValidationException;
  22 import org.simantics.db.exception.VariableException;
  23 import org.simantics.db.layer0.exception.InvalidVariableException;
  24 import org.simantics.db.layer0.exception.MissingVariableValueException;
  25 import org.simantics.db.layer0.exception.PendingVariableException;
  26 import org.simantics.db.layer0.function.All;
  27 import org.simantics.db.layer0.request.PropertyInfo;
  28 import org.simantics.db.layer0.request.PropertyInfoRequest;
  29 import org.simantics.db.layer0.scl.SCLDatabaseException;
  30 import org.simantics.db.layer0.util.Layer0Utils;
  31 import org.simantics.layer0.Layer0;
  32 import org.simantics.utils.Development;
  33 import org.simantics.utils.datastructures.Pair;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 public class StandardGraphPropertyVariable extends AbstractPropertyVariable {
  38     private static final Logger LOGGER = LoggerFactory.getLogger(StandardGraphPropertyVariable.class);
  39
  40         protected static final PropertyInfo NO_PROPERTY = new PropertyInfo(null, null,
  41                         false, Collections.<String> emptySet(), null, null, null, null, null, null,
  42                         Collections.<String, Pair<Resource, ChildReference>> emptyMap(),
  43                         null, false);
  44
  45         final public Variable parent;
  46         final public Resource parentResource;
  47         final public PropertyInfo property;
  48         final public Resource represents;
  49
  50         transient private int hash = 0;
  51
  52         public StandardGraphPropertyVariable(ReadGraph graph, Variable parent, VariableNode node, Resource property) throws DatabaseException {
  53                 this(graph, parent, node, (Resource)parent.getPossibleRepresents(graph), getPropertyInfo(graph, property));
  54         }
  55
  56         public StandardGraphPropertyVariable(ReadGraph graph, Variable parent, VariableNode node, Resource parentResource, Resource property) throws DatabaseException {
  57                 this(graph, parent, node, parentResource, getPropertyInfo(graph, property));
  58         }
  59
  60         public StandardGraphPropertyVariable(ReadGraph graph, Variable parent, Resource property) throws DatabaseException {
  61         this(graph, parent, null, (Resource)parent.getPossibleRepresents(graph), getPropertyInfo(graph, property));
  62     }
  63
  64     public StandardGraphPropertyVariable(ReadGraph graph, Variable parent, Resource parentResource, PropertyInfo property) throws DatabaseException {
  65         this(parent, null, parentResource, property, getPossibleRepresents(graph, parentResource, property.predicate));
  66     }
  67
  68     public StandardGraphPropertyVariable(ReadGraph graph, Variable parent, VariableNode node, Resource parentResource, PropertyInfo property) throws DatabaseException {
  69         this(parent, node, parentResource, property, getPossibleRepresents(graph, parentResource, property.predicate));
  70     }
  71
  72     private static PropertyInfo getPropertyInfo(ReadGraph graph, Resource property) throws DatabaseException {
  73             return property != null ? graph.syncRequest(new PropertyInfoRequest(property), TransientCacheAsyncListener.<PropertyInfo>instance()) : NO_PROPERTY;
  74     }
  75
  76     private static Resource getPossibleRepresents(ReadGraph graph, Resource parentResource, Resource predicate) throws DatabaseException {
  77         if(parentResource == null || predicate == null) return null;
  78         return graph.getPossibleObject(parentResource, predicate);
  79     }
  80
  81     public boolean isAsserted() {
  82         return false;
  83     }
  84
  85     public StandardGraphPropertyVariable(Variable parent, VariableNode node, Resource parentResource, PropertyInfo property, Resource represents) throws DatabaseException {
  86         super(node);
  87                 assert parent != null;
  88                 this.parent = parent;
  89                 this.property = property;
  90                 this.parentResource = parentResource;
  91                 this.represents = represents;
  92         }
  93
  94         @Override
  95         public String getName(ReadGraph graph) throws DatabaseException {
  96             if(node != null) return node.support.manager.getName(node.node);
  97                 return property.name;
  98         }
  99
 100         @Override
 101         public String getPossibleLabel(ReadGraph graph) throws DatabaseException {
 102                 return graph.getPossibleRelatedValue2(property.predicate, graph.getService(Layer0.class).HasLabel, parent, Bindings.STRING);
 103         }
 104
 105         @Override
 106         public String getLabel(ReadGraph graph) throws DatabaseException {
 107                 return graph.getRelatedValue2(property.predicate, graph.getService(Layer0.class).HasLabel, parent, Bindings.STRING);
 108         }
 109
 110         @Override
 111         public Variable getParent(ReadGraph graph) throws DatabaseException {
 112                 return parent;
 113         }
 114
 115         @Override
 116         public PropertyInfo getPropertyInfo(ReadGraph graph) throws DatabaseException {
 117                 return property;
 118         }
 119
 120         @SuppressWarnings("unchecked")
 121         @Override
 122         public <T> T getValue(ReadGraph graph) throws DatabaseException {
 123
 124                 if(Development.DEVELOPMENT) {
 125                         String error = L0Validations.checkValueType(graph, parentResource, property.predicate);
 126                         if(error != null) {
 127                             LOGGER.error(error);
 128                                 //throw new ValidationException(error);
 129                         }
 130                 }
 131
 132                 return (T)getValueAccessor(graph).getValue(graph, this);
 133
 134         }
 135
 136         @SuppressWarnings("unchecked")
 137         @Override
 138         public <T> T getValue(ReadGraph graph, Binding binding) throws DatabaseException {
 139                 // Fall back to the bindingless method, if the expected output is a Java object
 140                 if (binding instanceof ObjectVariantBinding)
 141                         return getValue(graph);
 142
 143                 if(Development.DEVELOPMENT) {
 144                         String error = L0Validations.checkValueType(graph, parentResource, property.predicate);
 145                         if(error != null) {
 146                             LOGGER.error(error);
 147                                 throw new ValidationException(error);
 148                         }
 149                 }
 150
 151                 try {
 152
 153                         return (T) getValueAccessor(graph).getValue(graph, this, binding);
 154                 } catch (SCLDatabaseException e) { // these can be thrown when compiling e.g. derived properties
 155                         throw e;
 156                 } catch (MissingVariableValueException | PendingVariableException e) {
 157                         throw e;
 158                 } catch (Throwable t) {
 159                         throw new MissingVariableValueException(t);
 160                 }
 161
 162         }
 163
 164         @Override
 165         public Resource getRepresents(ReadGraph graph) throws DatabaseException {
 166                 if(represents == null)
 167                         throw new InvalidVariableException("Variable is not represented by any resource (URI=" + getPossibleURI(graph) + ").");
 168                 return represents;
 169 //              return graph.getSingleObject(parentResource, property.predicate);
 170         }
 171
 172         @Override
 173         public Resource getPossibleRepresents(ReadGraph graph) throws DatabaseException {
 174 //        if(parentResource == null) return null;
 175 //              return graph.getPossibleObject(parentResource, property.predicate);
 176                 return represents;
 177         }
 178
 179         @Override
 180         public void setValue(WriteGraph graph, Object value, Binding binding) throws DatabaseException {
 181
 182                 if(Development.DEVELOPMENT) {
 183                         String error = L0Validations.checkValueType(graph, parentResource, property.predicate);
 184                         if(error != null) {
 185                             LOGGER.error(error);
 186                                 //throw new ValidationException(error);
 187                         }
 188                 }
 189
 190                 getValueAccessor(graph).setValue(graph, this, value, binding);
 191
 192         }
 193
 194         @Override
 195         public void setValue(WriteGraph graph, Object value) throws DatabaseException {
 196
 197                 if(Development.DEVELOPMENT) {
 198                         String error = L0Validations.checkValueType(graph, parentResource, property.predicate);
 199                         if(error != null) {
 200                             LOGGER.error(error);
 201                                 throw new ValidationException(error);
 202                         }
 203                 }
 204
 205                 getValueAccessor(graph).setValue(graph, this, value);
 206
 207         }
 208
 209         @Override
 210         public Binding getDefaultBinding(ReadGraph graph) throws DatabaseException {
 211                 return Layer0Utils.getDefaultBinding(graph, this);
 212         }
 213
 214         @Override
 215         public Binding getPossibleDefaultBinding(ReadGraph graph) throws DatabaseException {
 216                 return Layer0Utils.getPossibleDefaultBinding(graph, this);
 217         }
 218
 219         @Override
 220         public Datatype getDatatype(ReadGraph graph) throws DatabaseException {
 221 //<<<<<<< .mine
 222 //
 223 //      Binding binding = getPossibleDefaultBinding(graph);
 224 //        if(binding != null) return binding.type();
 225 //
 226 //              Variant vt = getVariantValue(graph);
 227 //              binding = vt.getBinding();
 228 //              if(binding == null) throw new DatabaseException("No binding in Variant with value " + vt.getValue());
 229 //              return binding.type();
 230 //=======
 231                 Datatype type;
 232                 try {
 233                         type = getValueAccessor(graph).getDatatype(graph, this);
 234                 } catch (Throwable t) {
 235                         throw new MissingVariableValueException(t);
 236                 }
 237
 238                 if (type == null) {
 239                         String uri = this.getPossibleURI(graph);
 240                         if (uri != null)
 241                                 throw new DatatypeNotFoundException("No data type for " + uri);
 242                         else
 243                                 throw new DatatypeNotFoundException("No data type for " + this.getIdentifier());
 244                 }
 245
 246                 return type;
 247 //>>>>>>> .r30794
 248
 249         }
 250
 251         @Override
 252         public Datatype getPossibleDatatype(ReadGraph graph) throws DatabaseException {
 253
 254                 try {
 255                         return getDatatype(graph);
 256                 } catch (DatabaseException e) {
 257                         return null;
 258                 }
 259
 260         }
 261
 262         @Override
 263         public String getUnit(ReadGraph graph) throws DatabaseException {
 264                 try {
 265                         return Layer0Utils.getUnit(graph, this);
 266                 } catch (DatabaseException e) {
 267                         return null;
 268                 }
 269         }
 270
 271         @Override
 272         public Resource getPropertyResource(ReadGraph graph) {
 273                 return property.predicate;
 274         }
 275
 276         @Override
 277         public Resource getContainerResource(ReadGraph graph) throws DatabaseException {
 278                 return parentResource;
 279         }
 280
 281         @Override
 282         public Collection<Variable> getChildren(ReadGraph graph) throws DatabaseException {
 283
 284                 Map<String, Variable> result = new HashMap<String, Variable>();
 285                 VariableMap map = getPossibleChildVariableMap(graph);
 286                 if(map != null) map.getVariables(graph, this, result);
 287                 return result.values();
 288
 289         }
 290
 291         @Override
 292         public Variable getPossibleChild(ReadGraph graph, String name) throws DatabaseException {
 293
 294                 VariableMap map = getPossibleChildVariableMap(graph);
 295                 if(map == null) return null;
 296                 try {
 297                         return map.getVariable(graph, this, name);
 298                 } catch (DatabaseException e) {
 299                         return null;
 300                 }
 301
 302         }
 303
 304
 305         @Override
 306         protected Variable getPossibleDomainProperty(ReadGraph graph, String name) throws DatabaseException {
 307
 308                 VariableMap valueMap = getPossiblePropertyVariableMap(graph);
 309                 if(valueMap == null) return null;
 310                 try {
 311                         return valueMap.getVariable(graph, this, name);
 312                 } catch (DatabaseException e) {
 313                         return null;
 314                 } catch (Exception t) {
 315                         LOGGER.error("getPossibleDomainProperty is implemented incorrectly, but returns null on Exception for backward compatibility. URI="+getURI(graph)+", name="+name+".", t);
 316                         return null;
 317                 }
 318
 319         }
 320
 321         @Override
 322         public Map<String, Variable> collectDomainProperties(ReadGraph graph, Map<String, Variable> properties) throws DatabaseException {
 323
 324                 VariableMap valueMap = getPossiblePropertyVariableMap(graph);
 325                 if(valueMap == null) return properties;
 326                 return valueMap.getVariables(graph, this, properties);
 327
 328         }
 329
 330         @Override
 331         public Variable getPredicate(ReadGraph graph) throws DatabaseException {
 332                 return Variables.getVariable(graph, graph.getURI(property.predicate));
 333         }
 334
 335         @Override
 336         public Resource getPredicateResource(ReadGraph graph) throws DatabaseException {
 337                 return property.predicate;
 338         }
 339
 340         @Override
 341         public Resource getPossiblePredicateResource(ReadGraph graph) throws DatabaseException {
 342                 return property.predicate;
 343         }
 344
 345         @Override
 346         public int hashCode() {
 347                 if(hash == 0) {
 348                         final int prime = 31;
 349                         int result = 1;
 350             result = prime * result + (parent != null ? parent.hashCode() : 0);
 351             result = prime * result + (node != null ? node.hashCode() : 0);
 352             result = prime * result + (property.predicate != null ? property.predicate.hashCode() : 0);
 353             result = prime * result + (parentResource != null ? parentResource.hashCode() : 0);
 354             result = prime * result + (represents != null ? represents.hashCode() : 0);
 355                         hash =result;
 356                 }
 357                 return hash;
 358         }
 359
 360         @Override
 361         public boolean equals(Object obj) {
 362                 if (this == obj)
 363                         return true;
 364                 if (obj == null)
 365                         return false;
 366                 if (getClass() != obj.getClass())
 367                         return false;
 368                 StandardGraphPropertyVariable other = (StandardGraphPropertyVariable) obj;
 369
 370         if(node != null) {
 371                 if(!node.equals(other.node)) return false;
 372         } else if (other.node != null) return false;
 373
 374         if(property.predicate != null) {
 375                 if(!property.predicate.equals(other.property.predicate)) return false;
 376         } else if (other.property.predicate != null) return false;
 377
 378         if(parentResource != null) {
 379                 if(!parentResource.equals(other.parentResource)) return false;
 380         } else if (other.parentResource != null) return false;
 381
 382         if(parent != null) {
 383                 if(!parent.equals(other.parent)) return false;
 384         } else if (other.parent != null) return false;
 385
 386         if(represents != null) {
 387                 if(!represents.equals(other.represents)) return false;
 388         } else if (other.represents != null) return false;
 389
 390         return true;
 391
 392         }
 393
 394         @Override
 395         protected Variable getNameVariable(ReadGraph graph) throws DatabaseException {
 396             throw new UnsupportedOperationException();
 397         }
 398
 399         protected ValueAccessor getValueAccessor(ReadGraph graph) throws DatabaseException {
 400                 if((property == null || property == NO_PROPERTY) && parentResource == null) return All.standardValueAccessor;
 401             ValueAccessor accessor = property.valueAccessor;
 402             if(accessor != null) return accessor;
 403             else {
 404                 System.err.println("No value accessor for " + getURI(graph));
 405                 return All.standardValueAccessor;
 406             }
 407         }
 408
 409         protected VariableMap getPossibleChildVariableMap(ReadGraph graph) throws DatabaseException {
 410                 if(represents == null) return All.standardPropertyDomainChildren;
 411             Resource domainChildren = Layer0.getInstance(graph).domainChildren;
 412                 return graph.getPossibleRelatedValue2(represents, domainChildren,
 413                                 new StandardGraphPropertyVariable(graph, this, domainChildren));
 414         }
 415
 416         protected VariableMap getPossiblePropertyVariableMap(ReadGraph graph) throws DatabaseException {
 417         if(property == null) return All.standardPropertyDomainProperties;
 418         if(property.predicate == null) return null;
 419                 return graph.syncRequest(new PropertyVariableMapRequest(property.predicate), TransientCacheAsyncListener.<VariableMap>instance());
 420         }
 421
 422         public Set<String> getClassifications(ReadGraph graph) throws DatabaseException {
 423                 return property.classifications;
 424         }
 425
 426         @Override
 427     public Map<String, Variable> collectDomainProperties(ReadGraph graph, String classification, Map<String, Variable> properties) throws DatabaseException {
 428
 429         VariableMap valueMap = getPossiblePropertyVariableMap(graph);
 430                 if(valueMap == null) return properties;
 431                 return valueMap.getVariables(graph, this, classification, properties);
 432
 433     }
 434
 435     public Collection<Variable> getProperties(ReadGraph graph, String classification) throws DatabaseException {
 436
 437         VariableMap valueMap = getPossiblePropertyVariableMap(graph);
 438                 if(valueMap == null) return Collections.emptyList();
 439                 Map<String,Variable> propertyMap = valueMap.getVariables(graph, this, classification, null);
 440         if(propertyMap == null || propertyMap.isEmpty()) return Collections.emptyList();
 441         else return propertyMap.values();
 442
 443     }
 444
 445 }