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