gerrit.simantics Code Review - simantics/platform.git/blob

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