gistfile1.java

	public void performRollback(String repositoryID, String pdoVersion) {
    	String server = GeneralOperations.getSesameServer();
    	Repository myRepository = createRepositoryConnection(server, repositoryID);
 	String sparqlQuery = "CONSTRUCT { ?s ?p ?o } WHERE {GRAPH <http://example.com/" + repositoryID + "_" + pdoVersion + ".owl>  {?s ?p ?o }}";
    	try {
            RepositoryConnection con = myRepository.getConnection();
            try {
            	GraphQuery graphResult = con.prepareGraphQuery(QueryLanguage.SPARQL, sparqlPrefixVersioning +  sparqlQuery);
            	try {
            		ValueFactory f = myRepository.getValueFactory();
            		org.openrdf.model.URI context = f.createURI("http://example.com/" + repositoryID + "_" + pdoVersion + ".owl");
            		GraphQueryResult result = graphResult.evaluate();
            		con.clear(context);
            		//con.clear();
		     	}
	    		finally {
	    			graphResult.clearBindings();
	    		}
            } finally {
                con.close();
            }
        } catch (Exception ex) {
           LOG.error("Exception: ", ex);
        }
        LOG.debug("END performRollback");		
	}