Collaboration diagram for VocabularyStore.CachedPropertyCollection:

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Public Member Functions
Collection< Property >	get ()

void	reportAdditional (Property p)

Package Functions
	CachedPropertyCollection (Resource type)

Private Attributes
final Resource	type

Collection< Property >	cache = null

Constructor & Destructor Documentation

◆ CachedPropertyCollection()

CachedPropertyCollection ( Resource type )

package

                                                         {
                         this.type = type;
                 }

References VocabularyStore.CachedPropertyCollection.type.

Member Function Documentation

◆ get()

Collection<Property> get ( )

                                                   {
                         if (dataSource == null) return Collections.emptyList();
                         if (cache != null) return cache;
                         cache = new ArrayList<Property>();
                         Model result = dataSource.listPropertyValues(type.getURI(), RDF.type, true);
                         StmtIterator it = result.listStatements(null, RDF.type, type);
                         while (it.hasNext()) {
                                 Resource r = it.next().getSubject();
                                 if (!r.isURIResource()) continue;
                                 cache.add(r.as(Property.class));
                         }
                         return cache;
                 }

References VocabularyStore.CachedPropertyCollection.cache, VocabularyStore.dataSource, DataSource.listPropertyValues(), and VocabularyStore.CachedPropertyCollection.type.

Referenced by RemoteSPARQLDataSource.preProcessQuery().

◆ reportAdditional()

void reportAdditional ( Property p )

                                                          {
                         if (cache == null) get();
                         if (cache.contains(p)) return;
                         cache.add(p);
                 }