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