Java TDBFactory类代码示例

import org.apache.jena.tdb.TDBFactory; //导入依赖的package包/类
public static void main(String[] args) {

    if (args.length != 3) {
      System.err.println("Wrong arguments");
      showUsage();
    }
    System.out.println("Model file   : " + args[0]);
    System.out.println("Model URI    : " + args[1]);
    System.out.println("Model tdb dir: " + args[2]);

    Dataset dataset = TDBFactory.createDataset(args[2]);
    try {
      Model model = dataset.getNamedModel(args[1]);
      TDBLoader.loadModel(model, args[0]);
    } finally {
      dataset.close();
    }
  }
 

import org.apache.jena.tdb.TDBFactory; //导入依赖的package包/类
/**
  * Fetch a model from Ontology Editor, load and return as TDB-backed Jena model.
  *
  * @param endpoint
  * @param tDbDirectoryPath
  * @return
* @throws OEConnectionException 
* @throws IOException 
  */
 public static Model loadOEModelToTdb(OEModelEndpoint endpoint, String tDbDirectoryPath) throws IOException, OEConnectionException {
   Preconditions.checkNotNull(endpoint);
   Preconditions.checkArgument(!Strings.isNullOrEmpty(tDbDirectoryPath));

   if (logger.isDebugEnabled()) {
     logger.debug("OEModelEndpoint: {}", endpoint);
     logger.debug("TDB Dir path   : {}", tDbDirectoryPath);
   }

   String modelAsTTL = endpoint.fetchData();

   Dataset dataset = TDBFactory.createDataset(tDbDirectoryPath);
   Model model = dataset.getNamedModel(endpoint.modelIri);
   model.read(new ByteArrayInputStream(modelAsTTL.getBytes()), "TTL");
   return model;
 }
 

import org.apache.jena.tdb.TDBFactory; //导入依赖的package包/类
public void init(String db, String uri, String lucene) {

    	Dataset ds = TDBFactory.createDataset(db);
        
        // Lucene configuration
        try {
            Directory luceneDir = FSDirectory.open(new File(lucene));
            EntityDefinition entDef = new EntityDefinition("comment", "text", RDFS.comment);
            // Set uid in order to remove index entries automatically
            entDef.setUidField("uid");
            StandardAnalyzer stAn = new StandardAnalyzer(Version.LUCENE_4_9);
            dataset = TextDatasetFactory.createLucene(ds, luceneDir, entDef, stAn);
            
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
        baseURI = uri;
        servers = new ArrayList<>();
        tdQueue = new PriorityQueue<ThingDescription>();
        loadTDQueue();
    }
 

import org.apache.jena.tdb.TDBFactory; //导入依赖的package包/类
public static List<String> queryData(String query){
	Dataset db = TDBFactory.createDataset("temp/dataset");
	db.begin(ReadWrite.READ);
    Model model = db.getDefaultModel();
    Query q = QueryFactory.create(query);
    QueryExecution qexec = QueryExecutionFactory.create(query, model);
    ResultSet results = qexec.execSelect();
    List<String> answer = new ArrayList<String>();
    while(results.hasNext()){
    	QuerySolution t = results.nextSolution();
    	RDFNode x  = t.get("x");
    	String s = x.toString();
	System.out.println(s);
    	answer.add(s.substring(7));
    }
    qexec.close();
    db.close();
    return answer;
}
 

import org.apache.jena.tdb.TDBFactory; //导入依赖的package包/类
public static void mainTDB(String...argv) throws IOException {
    DatasetGraphTDB dsg = ((DatasetGraphTransaction)TDBFactory.createDatasetGraph()).get() ;
    String DIR = "testing/Inf" ;
    String DATA_FILE = DIR+"/rdfs-data.ttl" ;
    String VOCAB_FILE = DIR+"/rdfs-vocab.ttl" ;
    String RULES_FILE = DIR+"/rdfs-min.rules" ;

    Model vocab = RDFDataMgr.loadModel(VOCAB_FILE) ;
    Model data = RDFDataMgr.loadModel(DATA_FILE) ;
    String rules = FileUtils.readWholeFileAsUTF8(RULES_FILE) ;
    rules = rules.replaceAll("#[^\\n]*", "") ;

    // TDB
    
    InferenceSetupRDFS_TDB setup = new InferenceSetupRDFS_TDB(vocab, dsg, false) ;
    //Graph graph = new GraphRDFS(setup, data.getGraph()) ;
    
    
}
 

import org.apache.jena.tdb.TDBFactory; //导入依赖的package包/类
public RelEx() {
	tokenizer = new Tokenizer();
	model = ModelFactory.createDefaultModel();
	model.setNsPrefix("rdfs", RDFS_NS);
	model.setNsPrefix("rdf", RDF_NS);
	model.setNsPrefix("owl", OWL_NS);
	model.setNsPrefix("dbpedia", DBPEDIA_NS);
	model.setNsPrefix("dbpedia-owl", DBPEDIA_OWL_NS);
	model.setNsPrefix("schema", SCHEMA_NS);
	model.setNsPrefix("wordnet-ontology", WORDNET_ONTOLOGY_NS);
	model.setNsPrefix("wn31", WN31_NS);
	
	final String wn31loc = System.getProperty("user.home") + "/wn31_tdb";
	log.info("Initializing WordNet 3.1 TDB database at {}", wn31loc);
	wn31tdb = TDBFactory.createDataset(wn31loc);
}
 

import org.apache.jena.tdb.TDBFactory; //导入依赖的package包/类
private Dataset buildBaseDataset() {
	Dataset jenaData;
	
	if (StringUtils.isNotBlank(jenaConfig.getAssemblerFile())) {
		LOGGER.debug("Building dataset from assembler file {}", jenaConfig.getAssemblerFile());
		jenaData = DatasetFactory.assemble(jenaConfig.getAssemblerFile(), jenaConfig.getAssemblerDataset());
	} else if (StringUtils.isNotBlank(jenaConfig.getTdbPath())) {
		LOGGER.debug("Building dataset from TDB data at {}", jenaConfig.getTdbPath());
		jenaData = TDBFactory.createDataset(jenaConfig.getTdbPath());
	} else {
		LOGGER.debug("Building dataset from ontology URI {}", jenaConfig.getOntologyUri());
		FileManager fileManager = FileManager.get();
		Model model = fileManager.loadModel(jenaConfig.getOntologyUri());
		
		// Build the base dataset backed by the model loaded from the URI
		jenaData = DatasetFactory.create(model);
	}
	
	return jenaData;
}
 

import org.apache.jena.tdb.TDBFactory; //导入依赖的package包/类
@Override
public void initialise(Map<String, Object> configuration) throws PluginInitialisationException {
	LOGGER.debug("Initialising ontology plugin: {}", PLUGIN_NAME);
	if (!configuration.containsKey(ENABLED_CFGKEY)) {
		LOGGER.info("No '{}' config key - assuming plugin disabled", ENABLED_CFGKEY);
	} else {
           enabled = (Boolean)configuration.get(ENABLED_CFGKEY);
           if (enabled) {
               if (!configuration.containsKey(TDB_PATH_CFGKEY)) {
                   throw new PluginInitialisationException("No " + TDB_PATH_CFGKEY + " specified - cannot create TDB dataset.");
               } else {
                   this.dataset = TDBFactory.createDatasetGraph((String) configuration.get(TDB_PATH_CFGKEY));
               }
           }
	}
}
 

import org.apache.jena.tdb.TDBFactory; //导入依赖的package包/类
public static void main(String... argv)
{
    // Direct way: Make a TDB-back Jena model in the named directory.
    String directory = "MyDatabases/DB1" ;
    Dataset dataset = TDBFactory.createDataset(directory) ;
    
    // Potentially expensive query.
    String sparqlQueryString = "SELECT (count(*) AS ?count) { ?s ?p ?o }" ;
    // See http://incubator.apache.org/jena/documentation/query/app_api.html
    
    Query query = QueryFactory.create(sparqlQueryString) ;
    QueryExecution qexec = QueryExecutionFactory.create(query, dataset) ;
    try {
      ResultSet results = qexec.execSelect() ;
      for ( ; results.hasNext() ; )
      {
          QuerySolution soln = results.nextSolution() ;
          int count = soln.getLiteral("count").getInt() ;
          System.out.println("count = "+count) ;
      }
    } finally { qexec.close() ; }

    // Close the dataset.
    dataset.close();
    
}
 

import org.apache.jena.tdb.TDBFactory; //导入依赖的package包/类
public static void main(String... argv)
{
    // Direct way: Make a TDB-back Jena model in the named directory.
    String directory = "MyDatabases/DB1" ;
    Dataset dataset = TDBFactory.createDataset(directory) ;
    
    // Potentially expensive query.
    String sparqlQueryString = "SELECT (count(*) AS ?count) { ?s ?p ?o }" ;
    // See http://incubator.apache.org/jena/documentation/query/app_api.html
    
    Query query = QueryFactory.create(sparqlQueryString) ;
    QueryExecution qexec = QueryExecutionFactory.create(query, dataset) ;
    ResultSet results = qexec.execSelect() ;
    ResultSetFormatter.out(results) ;
    qexec.close() ;

    dataset.close();
}
 

import org.apache.jena.tdb.TDBFactory; //导入依赖的package包/类
public static void main(String... argv)
{
    DatasetGraphTransaction dsg = (DatasetGraphTransaction)TDBFactory.createDatasetGraph() ;

    // Start READ transaction. 
    dsg.begin(ReadWrite.READ) ;
    
    try
    {
        // Do some queries
        String sparqlQueryString1 = "SELECT (count(*) AS ?count) { ?s ?p ?o }" ;
        execQuery(sparqlQueryString1, dsg) ;
    } finally
    {
        dsg.end() ;
    }
}
 

import org.apache.jena.tdb.TDBFactory; //导入依赖的package包/类
public SemaphoreModel(File tdbDirectory, String graphName, boolean resetTDB) throws IOException {
	if (resetTDB && tdbDirectory.exists()) {
		FileUtils.deleteDirectory(tdbDirectory);
	}
	Dataset dataset = TDBFactory.createDataset(tdbDirectory.getAbsolutePath());

	if  ((graphName == null) || (graphName.trim().length() == 0)) {
		model = dataset.getNamedModel(graphName);
	} else {
		model = dataset.getDefaultModel();
	}
	setPrefixes();
}
 

import org.apache.jena.tdb.TDBFactory; //导入依赖的package包/类
/**
 * Fetch a model at the specified URI, load and return an TDB-backed Jena model.
 *
 * @param rdfUri
 * @param modelId
 * @param tDbDirectoryPath
 * @return
 */
public static Model loadModelToTdb(String rdfUri, String modelId, String tDbDirectoryPath) {

  if (logger.isDebugEnabled()) {
    logger.debug("RDF URI : {}", rdfUri);
    logger.debug("Model ID: {}", modelId);
    logger.debug("TDB  DIR: {}", tDbDirectoryPath);
  }

  Dataset dataset = TDBFactory.createDataset(tDbDirectoryPath);
  Model model = dataset.getNamedModel(modelId);
  TDBLoader.loadModel(model, rdfUri );
  return model;
}
 

import org.apache.jena.tdb.TDBFactory; //导入依赖的package包/类
public static Boolean queryData2(String query){
	Dataset db = TDBFactory.createDataset("temp/dataset");
	db.begin(ReadWrite.READ);
    Model model = db.getDefaultModel();
    Query q = QueryFactory.create(query);
    QueryExecution qexec = QueryExecutionFactory.create(query, model);
    List<String> answer = new ArrayList<String>();
    Boolean t = (qexec.execAsk());
    qexec.close();
    db.close();
    return t;
}
 

import org.apache.jena.tdb.TDBFactory; //导入依赖的package包/类
public static void main(String... args) {
        //org.seaborne.delta.cmds.patchparse.main("/home/afs/tmp/X.rdfp");
        org.seaborne.delta.cmds.rdf2patch.main("/home/afs/tmp/D.ttl");
        System.exit(0);
        
//        FileOps.ensureDir("DB");
//        FileOps.clearAll("DB");
        DatasetGraph dsg = TDBFactory.createDatasetGraph();
        Txn.executeWrite(dsg,  ()->{});
        DatasetGraph dsg1 = new DatasetGraphOne(dsg.getDefaultGraph());
        DatasetGraph dsg2 = RDFPatchOps.textWriter(dsg1, System.out);
        
        Txn.executeWrite(dsg1,  ()->{});
        Txn.executeWrite(dsg2,  ()->{});
    }