\nMGraph definitions = new SimpleMGraph(); //indexing specifications\nMGraph dataGraph = new SimpleMGraph(); //the graph to index\n\n//adding index definitions:\nIndexDefinitionManager indexMgr = new IndexDefinitionManager(definitions);\n\n// index firstName + \u201C \u201C + lastName;\nList<VirtualProperty> predicates = new ArrayList<VirtualProperty>();\npredicates.add(new PropertyHolder(FOAF.firstName));\npredicates.add(new PropertyHolder(FOAF.lastName));\nJoinVirtualProperty name = new JoinVirtualProperty(predicates);\n\n// index the value on the path res/vcard:adr/vcard:street:address\nList<VirtualProperty> path = new ArrayList<VirtualProperty>();\npath.add(VCARD.adr);\npath.add(VCARD.street_address);\nPathVirtualProperty streetAddress = new PathVirtualProperty(path);\n\nList<VirtualProperty> properties = new ArrayList<VirtualProperty>();\nproperties.add(new PropertyHolder(FOAF.mbox)); //index the value of foaf:mbox\nproperties.add(name);\nproperties.add(streetAddress);\n\nindexMgr.addDefinition(FOAF.Person, properties); //index resources with rdf:type foaf:Person\n\n//create index\nGraphIndexer service = new GraphIndexer(definitions, dataGraph); //creates the index in memory\n\n//add more data to dataGraph if necessary\n\n//sort specification\nSortSpecification sortSpecification = new SortSpecification();\nsortSpecification.add(name, SortSpecification.STRING); //sort by name\n\n//faceted search\nSortedCountFacetCollector facetCollector = new SortedCountFacetCollector(); //count occurrence of same value\nfacetCollector.addFacetProperty(streetAddress); //count street address values\n\n//search for name\nList<NonLiteral> results = service.findResources(name, \"John D*\", false, sortSpecification, facetCollector);\n//results contains resources with names such as \u201CJohn Dalton\u201D, \u201CJohn Doe\u201D, etc. sorted by name \n\nfacetCollector.getFacets(streetAddress); //contains counts of how often the same streetAddress occurs\n\nservice.closeLuceneIndex(); //release reources\n