Пример #1
0
  RdfStorePrivate::ResultMap RdfStorePrivate::ExecuteTupleQuery(const std::string& query) const
  {
    RdfStorePrivate::ResultMap resultMap;

    const std::string completeQuery = this->PrependPrefixes(query);

    librdf_query* rdfQuery = librdf_new_query(m_World, "sparql", nullptr, (const unsigned char*) completeQuery.c_str(), nullptr);

    if (!rdfQuery) return resultMap;

    librdf_query_results* results = librdf_query_execute(rdfQuery, m_Model);

    if (!results)
    {
      librdf_free_query(rdfQuery);
      return resultMap;
    }

    if (!librdf_query_results_is_bindings(results))
    {
      librdf_free_query_results(results);
      librdf_free_query(rdfQuery);
      return resultMap;
    }

    while (!librdf_query_results_finished(results))
    {
      int count = librdf_query_results_get_bindings_count(results);

      for (int i = 0; i < count; ++i)
      {
        const char *name = librdf_query_results_get_binding_name(results, i);

        if (!name) continue;

        std::string key = name;

        std::list<RdfNode> list;

        if(!resultMap[key].empty())
        {
          list = resultMap[key];
        }

        librdf_node *node = librdf_query_results_get_binding_value(results, i);

        list.push_back(LibRdfNodeToRdfNode(node));

        resultMap[key] = list;
      }

      librdf_query_results_next(results);
    }

    librdf_free_query_results(results);
    librdf_free_query(rdfQuery);

    return resultMap;
  }
Пример #2
0
  bool RdfStorePrivate::ExecuteBooleanQuery(const std::string& query) const
  {
    const std::string completeQuery = this->PrependPrefixes(query);

    librdf_query* rdfQuery = librdf_new_query(m_World, "sparql", nullptr, (const unsigned char*) completeQuery.c_str(), nullptr);

    if (!rdfQuery)
    {
      mitkThrow() << "failed to create query object";
    }

    librdf_query_results* results = librdf_query_execute(rdfQuery, m_Model);

    if (!results)
    {
      librdf_free_query(rdfQuery);
      mitkThrow() << "SPARQL syntax error";
    }

    if (!librdf_query_results_is_boolean(results))
    {
      librdf_free_query_results(results);
      librdf_free_query(rdfQuery);

      mitkThrow() << "unexpected result type error: tried to request a boolean result with a non-boolean query";
    }

    int rawResult = librdf_query_results_get_boolean(results);

    bool booleanResult;

    if (rawResult > 0)
    {
      booleanResult = true;
    }
    else if (rawResult == 0)
    {
      booleanResult = false;
    }
    else
    {
      mitkThrow() << "error while retrieving result";
    }

    librdf_free_query_results(results);
    librdf_free_query(rdfQuery);

    return booleanResult;
  }
Пример #3
0
/**
 * @brief Executes the given delete query
 * @attention DELETE-Statement not supported in Redland, so the Query has to be SELECT with < ?s ?p ?o > statements!
 * 		These statements are removed out of the storage.
 * 		
 *
 * @param query The query to execute.
 */
bool RDF_ExecDiscardQuery(unsigned char* query)
{
    librdf_query* rdfquery;
    librdf_query_results* results;

    rdfquery = librdf_new_query(world, "sparql", NULL, query, NULL);
    results = librdf_model_query_execute(model, rdfquery);
    
    librdf_free_query(rdfquery);
    
    //Get all statements from the select query and remove them from storage
    while(!librdf_query_results_finished(results)) 
    {
      const char **names = NULL;
      librdf_node* values[10];
    
      if(librdf_query_results_get_bindings(results, &names, values))
      {
        break;
      }
          
      librdf_node* subject_tmp = values[0];
      librdf_node* predicate_tmp = values[1];
      librdf_node* object_tmp = values[2];
      
      librdf_statement* statement_tmp = librdf_new_statement_from_nodes(world, subject_tmp, predicate_tmp, object_tmp);
      librdf_storage_remove_statement(storage, statement_tmp);
      
      librdf_free_node(subject_tmp);
      librdf_free_node(predicate_tmp);
      librdf_free_node(object_tmp);      
      librdf_free_statement(statement_tmp);
      
      int i = 0;
      
      for (i = 0; i < 10; i++)
      {
          librdf_free_node(values[i]);
      }
          
      
      librdf_query_results_next(results);
      
      free(names);
    }    
    
    if (results == NULL)
    {
        printf("Failed to execute discard query!\n");
    }
    
    librdf_free_query_results(results);
    
    return true;
}
Пример #4
0
void
slv2_port_get_range(SLV2Plugin p, 
                    SLV2Port   port,
                    SLV2Value* def,
                    SLV2Value* min,
                    SLV2Value* max)
{
	if (def)
		*def = NULL;
	if (min)
		*min = NULL;
	if (max)
		*max = NULL;

	char* query = slv2_strjoin(
			"SELECT DISTINCT ?def ?min ?max WHERE {\n"
			"<", slv2_value_as_uri(p->plugin_uri), "> lv2:port ?port .\n"
			"?port lv2:symbol \"", slv2_value_as_string(port->symbol), "\".\n",
			"OPTIONAL { ?port lv2:default ?def }\n",
			"OPTIONAL { ?port lv2:minimum ?min }\n",
			"OPTIONAL { ?port lv2:maximum ?max }\n",
			"\n}", NULL);
	
	librdf_query_results* results = slv2_plugin_query(p, query);

    while (!librdf_query_results_finished(results)) {
		librdf_node* def_node = librdf_query_results_get_binding_value(results, 0);
		librdf_node* min_node = librdf_query_results_get_binding_value(results, 1);
		librdf_node* max_node = librdf_query_results_get_binding_value(results, 2);

		if (def && def_node && !*def)
			*def = slv2_value_new_librdf_node(p->world, def_node);
		if (min && min_node && !*min)
			*min = slv2_value_new_librdf_node(p->world, min_node);
		if (max && max_node && !*max)
			*max = slv2_value_new_librdf_node(p->world, max_node);

		if ((!def || *def) && (!min || *min) && (!max || *max))
			break;

		librdf_query_results_next(results);
	}
			
	librdf_free_query_results(results);

	free(query);
}
Пример #5
0
static int
query_results(request_rec *r, librdf_world *w, librdf_model *m, char *query) {
    int ret = 0;
    librdf_query *q = NULL;
    librdf_query_results *qr = NULL;

    if ((q = librdf_new_query(w, "sparql", NULL, (unsigned char *)query, NULL)) != NULL) {
        if ((qr = librdf_query_execute(q, m)) != NULL) {
            for (; !librdf_query_results_finished(qr); librdf_query_results_next(qr));
            ret = librdf_query_results_get_count(qr);
            ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, "[ACL] [query] %d results, sparql: %s", ret, query);
            librdf_free_query_results(qr);
        } else
            ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "librdf_query_execute returned NULL");
        librdf_free_query(q);
    } else
        ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "librdf_new_query returned NULL");
    return ret;
}
Пример #6
0
SLV2ScalePoints
slv2_port_get_scale_points(SLV2Plugin p,
                           SLV2Port port)
{
	char* query = slv2_strjoin(
			"SELECT DISTINCT ?value ?label WHERE {\n"
			"<", slv2_value_as_uri(p->plugin_uri), "> lv2:port ?port .\n"
			"?port  lv2:symbol \"", slv2_value_as_string(port->symbol), "\" ;\n",
			"       lv2:scalePoint ?point .\n"
			"?point rdf:value ?value ;\n"
			"       rdfs:label ?label .\n"
			"\n} ORDER BY ?value", NULL);
	
	librdf_query_results* results = slv2_plugin_query(p, query);
	
	SLV2ScalePoints ret = NULL;

    if (!librdf_query_results_finished(results))
		ret = slv2_scale_points_new();

    while (!librdf_query_results_finished(results)) {
	
		librdf_node* value_node = librdf_query_results_get_binding_value(results, 0);
		librdf_node* label_node = librdf_query_results_get_binding_value(results, 1);

		SLV2Value value = slv2_value_new_librdf_node(p->world, value_node);
		SLV2Value label = slv2_value_new_librdf_node(p->world, label_node);

		raptor_sequence_push(ret, slv2_scale_point_new(value, label));
		
		librdf_query_results_next(results);
	}
			
	librdf_free_query_results(results);

	free(query);

	assert(!ret || slv2_values_size(ret) > 0);

	return ret;
}
Пример #7
0
/**
 * @brief Executes the given query and returns the result in the given format.
 *
 *
 * @param query The query to execute.
 * @param format The format of the result.
 * 
 * @return The results.
 */
unsigned char* RDF_ExecQuery(unsigned char* query, unsigned char* format)
{   
    librdf_query* rdfquery;
    librdf_query_results* results;
           
    rdfquery = librdf_new_query(world, "sparql", NULL, query, NULL);
    results = librdf_model_query_execute(model, rdfquery);             
        
    librdf_serializer* serializer;
    librdf_stream* stream;

    serializer = librdf_new_serializer(world, format, NULL, NULL);
    
    if(!serializer) 
    {
      fprintf(stderr,
              "Failed to create triples serializer for format '%s'\n",
              format);
      return NULL;
    }

    stream = librdf_query_results_as_stream(results);
    unsigned char* result = librdf_serializer_serialize_stream_to_string(serializer,
               NULL, stream);    

    if(!result) 
    {
      fprintf(stderr, "Failed to turn query results to format '%s'\n",
              format);
      return NULL;
    }
    
    librdf_free_query(rdfquery);
    librdf_free_query_results(results);
    librdf_free_serializer(serializer);
    librdf_free_stream(stream);
    
    return result;
}
Пример #8
0
bool
slv2_port_supports_event(SLV2Plugin p,
                         SLV2Port   port,
                         SLV2Value  event)
{
	assert(event);

	char* query = slv2_strjoin(
			"ASK WHERE {\n"
			"<", slv2_value_as_uri(p->plugin_uri), "> lv2:port ?port ."
			"?port lv2:symbol \"", slv2_value_as_string(port->symbol), "\";\n",
			"      lv2ev:supportsEvent <", event, "> .\n"
			"}", NULL);
			
	librdf_query_results* results = slv2_plugin_query(p, query);
	assert(librdf_query_results_is_boolean(results));

	const bool ret = librdf_query_results_get_boolean(results);

	free(query);
	librdf_free_query_results(results);
	
	return ret;
}
Пример #9
0
void
slv2_results_free(SLV2Results results)
{
	librdf_free_query_results(results->rdf_results);
	free(results);
}
Пример #10
0
UT_Error IE_Imp_OpenDocument::_handleRDFStreams ()
{
#ifndef WITH_REDLAND
    return UT_OK;
#else
    UT_Error error = UT_OK;
    
    UT_DEBUGMSG(("IE_Imp_OpenDocument::_handleRDFStreams()\n"));

    // // DEBUG.
    // {
    //     PD_DocumentRDFHandle rdf = getDoc()->getDocumentRDF();
    //     PD_DocumentRDFMutationHandle m = rdf->createMutation();
    //     m->add( PD_URI("http://www.example.com/foo#bar" ),
    //             PD_URI("http://www.example.com/foo#bar" ),
    //             PD_Object("http://www.example.com/foo#bar" ) );
    //     m->commit();
    //     rdf->dumpModel("added foo");
    // }
    

    
    RDFArguments args;
    librdf_model* model = args.model;

    // check if we can load a manifest.rdf file
    GsfInput* pRdfManifest = gsf_infile_child_by_name(m_pGsfInfile, "manifest.rdf");
    if (pRdfManifest)
    {
        UT_DEBUGMSG(("IE_Imp_OpenDocument::_handleRDFStreams() have manifest.rdf\n"));
        error = _loadRDFFromFile( pRdfManifest, "manifest.rdf", &args );
        g_object_unref (G_OBJECT (pRdfManifest));
        if (error != UT_OK)
            return error;
    }

    // find other RDF/XML files referenced in the manifest
    const char* query_string = ""
        "prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> \n"
        "prefix odf: <http://docs.oasis-open.org/opendocument/meta/package/odf#> \n"
        "prefix odfcommon: <http://docs.oasis-open.org/opendocument/meta/package/common#> \n"
        "select ?subj ?fileName \n"
        " where { \n"
        "  ?subj rdf:type odf:MetaDataFile . \n"
        "  ?subj odfcommon:path ?fileName  \n"
        " } \n";

    librdf_uri*   base_uri = 0;
    librdf_query* query = librdf_new_query( args.world, "sparql", 0,
                                            (unsigned char*)query_string,
                                            base_uri );
    librdf_query_results* results = librdf_query_execute( query, model );

    if( !results )
    {
        // Query failed is a failure to execute the SPARQL,
        // in which case there might be results but we couldn't find them
        UT_DEBUGMSG(("IE_Imp_OpenDocument::_handleRDFStreams() SPARQL query to find auxillary RDF/XML files failed! q:%p\n", query ));
        error = UT_ERROR;
    }
    else
    {
        UT_DEBUGMSG(("IE_Imp_OpenDocument::_handleRDFStreams() aux RDF/XML file count:%d\n",
                     librdf_query_results_get_count( results )));

        // parse auxillary RDF/XML files too
        for( ; !librdf_query_results_finished( results ) ;
             librdf_query_results_next( results ))
        {
            librdf_node* fnNode = librdf_query_results_get_binding_value_by_name
                ( results, "fileName" );
            UT_DEBUGMSG(("_handleRDFStreams() fnNode:%p\n", fnNode ));
            std::string fn = toString(fnNode);
        
            UT_DEBUGMSG(("_handleRDFStreams() loading auxilary RDF/XML file from:%s\n",
                         fn.c_str()));
            GsfInput* pAuxRDF = gsf_infile_child_by_name(m_pGsfInfile, fn.c_str());
            if (pAuxRDF) {
                error = _loadRDFFromFile( pAuxRDF, fn.c_str(), &args );
                g_object_unref (G_OBJECT (pAuxRDF));
                if( error != UT_OK )
                    break;
            } else {
                UT_ASSERT_HARMLESS(UT_SHOULD_NOT_HAPPEN);
                return UT_ERROR;
            }
        }
        librdf_free_query_results( results );
    }
    librdf_free_query( query );

    UT_DEBUGMSG(("_handleRDFStreams() error:%d model.sz:%d\n",
                 error, librdf_model_size( model )));
    if( error != UT_OK )
    {
        return error;
    }
    
    // convert the redland model into native AbiWord RDF triples
    {
        PD_DocumentRDFHandle rdf = getDoc()->getDocumentRDF();
        PD_DocumentRDFMutationHandle m = rdf->createMutation();
        librdf_statement* statement = librdf_new_statement( args.world );
        librdf_stream* stream = librdf_model_find_statements( model, statement );

		while (!librdf_stream_end(stream))
        {
            librdf_statement* current = librdf_stream_get_object( stream );

            int objectType = PD_Object::OBJECT_TYPE_URI;
            
            std::string xsdType = "";
            if( librdf_node_is_blank( librdf_statement_get_object( current )))
            {
                objectType = PD_Object::OBJECT_TYPE_BNODE;
            }
            if( librdf_node_is_literal( librdf_statement_get_object( current )))
            {
                objectType = PD_Object::OBJECT_TYPE_LITERAL;
                if( librdf_uri* u = librdf_node_get_literal_value_datatype_uri(
                        librdf_statement_get_object( current )))
                {
                    xsdType = toString(u);
                }
            }

            if( DEBUG_RDF_IO )
            {
                UT_DEBUGMSG(("_handleRDFStreams() adding s:%s p:%s o:%s rotv:%d otv:%d ots:%s\n",
                             toString( librdf_statement_get_subject( current )).c_str(),
                             toString( librdf_statement_get_predicate( current )).c_str(),
                             toString( librdf_statement_get_object( current )).c_str(),
                             librdf_node_get_type(librdf_statement_get_object( current )),
                             objectType,
                             xsdType.c_str()
                                ));
            }
            
            m->add( PD_URI( toString( librdf_statement_get_subject( current ))),
                    PD_URI( toString( librdf_statement_get_predicate( current ))),
                    PD_Object( toString( librdf_statement_get_object( current )), objectType, xsdType ));

            // m->add( PD_URI( toString( librdf_statement_get_subject( current ))),
            //         PD_URI( toString( librdf_statement_get_predicate( current ))),
            //         PD_Object( toString( librdf_statement_get_object( current )),
            //                    objectType,
            //                    xsdType ));

            librdf_stream_next(stream);
        }
        
        librdf_free_stream( stream );
        librdf_free_statement( statement );
        // m->add( PD_URI("http://www.example.com/foo#bar" ),
        //         PD_URI("http://www.example.com/foo#bar" ),
        //         PD_Object("http://www.example.com/foo#bar" ) );
        m->commit();
    }

    if( DEBUG_RDF_IO )
    {
        getDoc()->getDocumentRDF()->dumpModel("Loaded RDF from ODF file");
    }
    return error;
#endif
}
Пример #11
0
static int
validate_webid(request_rec *request, const char *subjAltName, char *pkey_n, unsigned int pkey_e_i) {
    int r = HTTP_UNAUTHORIZED;

    librdf_world *rdf_world = NULL;
    librdf_storage *rdf_storage = NULL;
    librdf_model *rdf_model = NULL;
    librdf_query *rdf_query = NULL;
    librdf_query_results *rdf_query_results = NULL;

    rdf_world = librdf_new_world();
    if (rdf_world != NULL) {
        librdf_world_open(rdf_world);
        librdf_world_set_logger(rdf_world, (void *)request, ap_rdf_log_proxy);
        rdf_storage = librdf_new_storage(rdf_world, "uri", subjAltName, NULL);
        if (rdf_storage != NULL) {
            rdf_model = librdf_new_model(rdf_world, rdf_storage, NULL);
        } else
            ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, request, "WebID: librdf_new_storage returned NULL");
    }

    if (rdf_model != NULL) {
        char *c_query = apr_psprintf(request->pool, SPARQL_WEBID, subjAltName);
        ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, request, "WebID: SPARQL query   = %s", c_query);
        rdf_query = librdf_new_query(rdf_world, "sparql", NULL, (unsigned char*)c_query, NULL);
    } else {
        ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, request, "WebID: librdf_new_query returned NULL");
    }

    if (rdf_query != NULL) {
        rdf_query_results = librdf_query_execute(rdf_query, rdf_model);
        if (rdf_query_results != NULL) {
            for (; r != OK && librdf_query_results_finished(rdf_query_results)==0; librdf_query_results_next(rdf_query_results)) {
                librdf_node *m_node, *e_node;
                unsigned char *rdf_mod;
                unsigned char *rdf_exp;
                if (r != OK
                    && NULL != (m_node = librdf_query_results_get_binding_value_by_name(rdf_query_results, "m"))
                    && NULL != (e_node = librdf_query_results_get_binding_value_by_name(rdf_query_results, "e"))) {
                    if (librdf_node_get_type(m_node) == LIBRDF_NODE_TYPE_LITERAL
                        && librdf_node_get_type(e_node) == LIBRDF_NODE_TYPE_LITERAL) {
                        rdf_mod = librdf_node_get_literal_value(m_node);
                        rdf_exp = librdf_node_get_literal_value(e_node);
                        ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, request, "WebID: modulus = %s", rdf_mod);
                        ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, request, "WebID: exponent = %s", rdf_exp);
                        if (rdf_exp != NULL
                            && apr_strtoi64((char*)rdf_exp, NULL, 10) == pkey_e_i
                            && matches_pkey(rdf_mod, pkey_n))
                            r = OK;
                        librdf_free_node(m_node);
                        librdf_free_node(e_node);
                    }
                }
            }
            librdf_free_query_results(rdf_query_results);
        } else
            ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, request, "WebID: librdf_query_execute returned NULL");
        librdf_free_query(rdf_query);
    } else
        ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, request, "WebID: librdf_new_query returned NULL");

    if (rdf_model) librdf_free_model(rdf_model);
    if (rdf_storage) librdf_free_storage(rdf_storage);
    if (rdf_world) librdf_free_world(rdf_world);

    return r;
}
Пример #12
0
void run_query(librdf_world* world, librdf_model* model, const std::string& q)
{
    librdf_stream* strm;

    std::cout << "** Query: " << q << std::endl;

    librdf_uri* uri1 =
	librdf_new_uri(world, (const unsigned char*) "http://bunchy.org");

    if (uri1 == 0)
	throw std::runtime_error("Couldn't parse URI");
    
    librdf_uri* uri2 =
	librdf_new_uri(world, (const unsigned char*) "http://bunchy.org");
    if (uri2 == 0)
	throw std::runtime_error("Couldn't parse URI");
    
    librdf_query* qry =
	librdf_new_query(world, "sparql", uri1,
			 (const unsigned char*) q.c_str(),
			 uri2);
    
    librdf_free_uri(uri1);
    librdf_free_uri(uri2);
    
    if (qry == 0)
	throw std::runtime_error("Couldn't parse query.");
    
    librdf_query_results* results = librdf_query_execute(qry, model);
    if (results == 0)
	throw std::runtime_error("Couldn't execute query");
    
    librdf_free_query(qry);
    
    strm = librdf_query_results_as_stream(results);
    if (strm == 0)
	throw std::runtime_error("Couldn't stream results");
    
    librdf_serializer* srl = librdf_new_serializer(world, "ntriples",
						   0, 0);
    if (srl == 0)
	throw std::runtime_error("Couldn't create serialiser");
    
    size_t len;
    
    unsigned char* out =
	librdf_serializer_serialize_stream_to_counted_string(srl, 0,
							     strm, &len);
    
    std::cout << "--------------------------------------------------------"
	      << std::endl;
    write(1, out, len);
    std::cout << "--------------------------------------------------------"
	      << std::endl;
    
    free(out);
    
    librdf_free_serializer(srl);

    librdf_free_stream(strm);
    
    librdf_free_query_results(results);
    
}
Пример #13
0
void run_query2(librdf_world* world, librdf_model* model, const std::string& q)
{

    librdf_stream* strm;

    std::cout << "** Query: " << q << std::endl;

    librdf_uri* uri1 =
	librdf_new_uri(world, (const unsigned char*) "http://bunchy.org");

    if (uri1 == 0)
	throw std::runtime_error("Couldn't parse URI");
    
    librdf_uri* uri2 =
	librdf_new_uri(world, (const unsigned char*) "http://bunchy.org");
    if (uri2 == 0)
	throw std::runtime_error("Couldn't parse URI");
    
    librdf_query* qry =
	librdf_new_query(world, "sparql", uri1,
			 (const unsigned char*) q.c_str(),
			 uri2);
    
    librdf_free_uri(uri1);
    librdf_free_uri(uri2);
    
    if (qry == 0)
	throw std::runtime_error("Couldn't parse query.");
    
    librdf_query_results* results = librdf_query_execute(qry, model);
    if (results == 0)
	throw std::runtime_error("Couldn't execute query");
    
    librdf_free_query(qry);

    std::cout << "--------------------------------------------------------"
	      << std::endl;

    while (true) {
      
	if (librdf_query_results_finished(results)) break;
      
	int bcount = librdf_query_results_get_bindings_count(results);
	if (bcount < 0)
	    throw std::runtime_error("Couldn't get query bindings count");
      
	for(int i = 0; i < bcount; i++) {
	
	    if (i != 0) std::cout << " ";
	
	    librdf_node* value =
		librdf_query_results_get_binding_value(results, i);
	
	    if (value == 0)
		throw std::runtime_error("Couldn't get results binding");
	
	    output_node(value);

	    librdf_free_node(value);

	}

	std::cout << std::endl;

	librdf_query_results_next(results);

    }

    std::cout << "--------------------------------------------------------"
	      << std::endl;

    librdf_free_query_results(results);
    
}
Пример #14
0
int
main(int argc, char *argv[])
{
  librdf_world* world;
  librdf_parser* parser;
  librdf_serializer* serializer;
  librdf_storage *storage;
  librdf_model* model;
  librdf_node *source, *arc, *target, *node;
  librdf_node *subject, *predicate, *object;
  librdf_node* context_node=NULL;
  librdf_stream* stream;
  librdf_iterator* iterator;
  librdf_uri *uri;
  librdf_uri *base_uri=NULL;
  librdf_query *query;
  librdf_query_results *results;
  librdf_hash *options;
  int count;
  int rc;
  int transactions=0;
  const char* storage_name;
  const char* storage_options;
  const char* context;
  const char* identifier;
  const char* results_format;
  librdf_statement* statement=NULL;
  char* query_cmd=NULL;
  char* s;


  /*
   * Initialize
   */
  storage_name="virtuoso";
  results_format="xml";
  context=DEFAULT_CONTEXT;
  identifier=DEFAULT_IDENTIFIER;


  /*
   * Get connection options
   */
  if(argc == 2 && argv[1][0] != '\0')
    storage_options=argv[1];
  else if((s=getenv ("VIRTUOSO_STORAGE_OPTIONS")) != NULL)
    storage_options=s;
  else
    storage_options=DEFAULT_STORAGE_OPTIONS;


  world=librdf_new_world();

  librdf_world_set_logger(world, world, log_handler);

  librdf_world_open(world);

  options=librdf_new_hash(world, NULL);
  librdf_hash_open(options, NULL, 0, 1, 1, NULL);

  librdf_hash_put_strings(options, "contexts", "yes");
  transactions=1;

  librdf_hash_from_string(options, storage_options);

  storage=librdf_new_storage_with_options(world, storage_name, identifier, options);

  if(!storage) {
    fprintf(stderr, ": Failed to open %s storage '%s'\n", storage_name, identifier);
    return(1);
  }

  model=librdf_new_model(world, storage, NULL);
  if(!model) {
    fprintf(stderr, ": Failed to create model\n");
    return(1);
  }

  if(transactions)
    librdf_model_transaction_start(model);

  /* Do this or gcc moans */
  stream=NULL;
  iterator=NULL;
  parser=NULL;
  serializer=NULL;
  source=NULL;
  arc=NULL;
  target=NULL;
  subject=NULL;
  predicate=NULL;
  object=NULL;
  uri=NULL;
  node=NULL;
  query=NULL;
  results=NULL;
  context_node=librdf_new_node_from_uri_string(world, (const unsigned char *)context);


  /**** Test 1 *******/
  startTest(1, " Remove all triples in <%s> context\n", context);
  {
    rc=librdf_model_context_remove_statements(model, context_node);

    if(rc)
      endTest(0, " failed to remove context triples from the graph\n");
    else
      endTest(1, " removed context triples from the graph\n");
  }


  /**** Test 2 *******/
  startTest(2, " Add triples to <%s> context\n", context);
  {
    rc=0;
    rc |= add_triple(world, context_node, model, "aa", "bb", "cc");
    rc |= add_triple(world, context_node, model, "aa", "bb1", "cc");
    rc |= add_triple(world, context_node, model, "aa", "a2", "_:cc");
    rc |= add_triple_typed(world, context_node, model, "aa", "a2", "cc");
    rc |= add_triple_typed(world, context_node, model, "mm", "nn", "Some long literal with language@en");
    rc |= add_triple_typed(world, context_node, model, "oo", "pp", "12345^^<http://www.w3.org/2001/XMLSchema#int>");
    if(rc)
      endTest(0, " failed add triple\n");
    else
      endTest(1, " add triple to context\n");
  }


  /**** Test 3 *******/
  startTest(3, " Print all triples in <%s> context\n", context);
  {
    raptor_iostream* iostr = raptor_new_iostream_to_file_handle(librdf_world_get_raptor(world), stdout);
    librdf_model_write(model, iostr);
    raptor_free_iostream(iostr);
    endTest(1, "\n");
  }


  /***** Test 4 *****/
  startTest(4, " Count of triples in <%s> context\n", context);
  {
    count=librdf_model_size(model);
    if(count >= 0)
      endTest(1, " graph has %d triples\n", count);
    else
      endTest(0, " graph has unknown number of triples\n");
  }


  /***** Test 5 *****/
  startTest(5, " Exec:  ARC  aa bb \n");
  {
    subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
    predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb");
    node=librdf_model_get_target(model, subject, predicate);
    librdf_free_node(subject);
    librdf_free_node(predicate);
    if(!node) {
      endTest(0, " Failed to get arc\n");
    } else {
      print_node(stdout, node);
      librdf_free_node(node);
      endTest(1, "\n");
    }
  }


  /***** Test 6 *****/
  startTest(6, " Exec:  ARCS  aa cc \n");
  {
    subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
    object=librdf_new_node_from_uri_string(world, (const unsigned char*)"cc");
    iterator=librdf_model_get_arcs(model, subject, object);
    librdf_free_node(subject);
    librdf_free_node(object);
    if(!iterator) {
      endTest(0, " Failed to get arcs\n");
    } else {
      print_nodes(stdout, iterator);
      endTest(1, "\n");
    }
  }


  /***** Test 7 *****/
  startTest(7, " Exec:  ARCS-IN  cc \n");
  {
    object=librdf_new_node_from_uri_string(world, (const unsigned char*)"cc");
    iterator=librdf_model_get_arcs_in(model, object);
    librdf_free_node(object);
    if(!iterator) {
      endTest(0, " Failed to get arcs in\n");
    } else {
      int ok=1;
      count=0;
      while(!librdf_iterator_end(iterator)) {
        context_node=(librdf_node*)librdf_iterator_get_context(iterator);
        node=(librdf_node*)librdf_iterator_get_object(iterator); /*returns SHARED pointer */
        if(!node) {
          ok=0;
          endTest(ok, " librdf_iterator_get_next returned NULL\n");
          break;
        }

        fputs("Matched arc: ", stdout);
        librdf_node_print(node, stdout);
        if(context_node) {
          fputs(" with context ", stdout);
          librdf_node_print(context_node, stdout);
        }
        fputc('\n', stdout);

        count++;
        librdf_iterator_next(iterator);
      }
      librdf_free_iterator(iterator);
      endTest(ok, " matching arcs: %d\n", count);
    }
  }


  /***** Test 8 *****/
  startTest(8, " Exec:  ARCS-OUT  aa \n");
  {
    subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
    iterator=librdf_model_get_arcs_out(model, subject);
    librdf_free_node(subject);
    if(!iterator)
      endTest(0, " Failed to get arcs out\n");
    else {
      int ok=1;
      count=0;
      while(!librdf_iterator_end(iterator)) {
        context_node=(librdf_node*)librdf_iterator_get_context(iterator);
        node=(librdf_node*)librdf_iterator_get_object(iterator);
        if(!node) {
          ok=0;
          endTest(ok, " librdf_iterator_get_next returned NULL\n");
          break;
        }

        fputs("Matched arc: ", stdout);
        librdf_node_print(node, stdout);
        if(context_node) {
          fputs(" with context ", stdout);
          librdf_node_print(context_node, stdout);
        }
        fputc('\n', stdout);

        count++;
        librdf_iterator_next(iterator);
      }
      librdf_free_iterator(iterator);
      endTest(ok, " matching arcs: %d\n", count);
    }
  }


  /***** Test 9 *****/
  startTest(9, " Exec:  CONTAINS aa bb1 cc \n");
  {
    subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
    predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb1");
    object=librdf_new_node_from_uri_string(world, (const unsigned char*)"cc");
    statement=librdf_new_statement(world);
    librdf_statement_set_subject(statement, subject);
    librdf_statement_set_predicate(statement, predicate);
    librdf_statement_set_object(statement, object);

    if(librdf_model_contains_statement(model, statement))
       endTest(1, " the graph contains the triple\n");
    else
       endTest(0, " the graph does not contain the triple\n");

    librdf_free_statement(statement);
  }


  /***** Test 10 *****/
  startTest(10, " Exec:  FIND aa - - \n");
  {
    subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
    statement=librdf_new_statement(world);
    librdf_statement_set_subject(statement, subject);

    stream=librdf_model_find_statements_in_context(model, statement, context_node);

    if(!stream) {
        endTest(0, " FIND returned no results (NULL stream)\n");
    } else {
        librdf_node* ctxt_node=NULL;
        int ok=1;
        count=0;
        while(!librdf_stream_end(stream)) {
          librdf_statement *stmt=librdf_stream_get_object(stream);
          ctxt_node=(librdf_node*)librdf_stream_get_context(stream);
          if(!stmt) {
              ok=0;
              endTest(ok, " librdf_stream_next returned NULL\n");
              break;
          }

          fputs("Matched triple: ", stdout);
          librdf_statement_print(stmt, stdout);
          if(context) {
              fputs(" with context ", stdout);
              librdf_node_print(ctxt_node, stdout);
          }
          fputc('\n', stdout);

          count++;
          librdf_stream_next(stream);
        }
        librdf_free_stream(stream);
        endTest(ok, " matching triples: %d\n", count);
    }

    librdf_free_statement(statement);
  }


  /***** Test 11 *****/
  startTest(11, " Exec:  HAS-ARC-IN cc bb \n");
  {
    predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb");
    object=librdf_new_node_from_uri_string(world, (const unsigned char*)"cc");

    if(librdf_model_has_arc_in(model, object, predicate))
        endTest(1, " the graph contains the arc\n");
      else
        endTest(0, " the graph does not contain the arc\n");

    librdf_free_node(predicate);
    librdf_free_node(object);
  }


  /***** Test 12 *****/
  startTest(12, " Exec:  HAS-ARC-OUT aa bb \n");
  {
    subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
    predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb");

    if(librdf_model_has_arc_out(model, subject, predicate))
        endTest(1, " the graph contains the arc\n");
      else
        endTest(0, " the graph does not contain the arc\n");

    librdf_free_node(predicate);
    librdf_free_node(subject);
  }


  /***** Test 13 *****/
  startTest(13, " Exec:  SOURCE  aa cc \n");
  {
    predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb");
    object=librdf_new_node_from_uri_string(world, (const unsigned char*)"cc");

    node=librdf_model_get_source(model, predicate, object);
    librdf_free_node(predicate);
    librdf_free_node(object);
    if(!node) {
      endTest(0, " Failed to get source\n");
    } else {
      print_node(stdout, node);
      librdf_free_node(node);
      endTest(1, "\n");
    }
  }


  /***** Test 14 *****/
  startTest(14, " Exec:  SOURCES  bb cc \n");
  {
    predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb");
    object=librdf_new_node_from_uri_string(world, (const unsigned char*)"cc");

    iterator=librdf_model_get_sources(model, predicate, object);
    librdf_free_node(predicate);
    librdf_free_node(object);
    if(!iterator) {
      endTest(0, " Failed to get sources\n");
    } else {
      print_nodes(stdout, iterator);
      endTest(1, "\n");
    }
  }


  /***** Test 15 *****/
  startTest(15, " Exec:  TARGET  aa bb \n");
  {
    subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
    predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb");

    node=librdf_model_get_target(model, subject, predicate);
    librdf_free_node(subject);
    librdf_free_node(predicate);
    if(!node) {
      endTest(0, " Failed to get target\n");
    } else {
      print_node(stdout, node);
      librdf_free_node(node);
      endTest(1, "\n");
    }
  }


  /***** Test 16 *****/
  startTest(16, " Exec:  TARGETS  aa bb \n");
  {
    subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
    predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb");

    iterator=librdf_model_get_targets(model, subject, predicate);
    librdf_free_node(subject);
    librdf_free_node(predicate);
    if(!iterator) {
      endTest(0, " Failed to get targets\n");
    } else {
      print_nodes(stdout, iterator);
      endTest(1, "\n");
    }
  }


  /***** Test 17 *****/
  startTest(17, " Exec:  REMOVE aa bb1 cc \n");
  {
    subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
    predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb1");
    object=librdf_new_node_from_uri_string(world, (const unsigned char*)"cc");
    statement=librdf_new_statement(world);
    librdf_statement_set_subject(statement, subject);
    librdf_statement_set_predicate(statement, predicate);
    librdf_statement_set_object(statement, object);

    if(librdf_model_context_remove_statement(model, context_node, statement))
       endTest(0, " failed to remove triple from the graph\n");
    else
       endTest(1, " removed triple from the graph\n");

    librdf_free_statement(statement);
  }


  /***** Test 18 *****/
  query_cmd=(char *)"CONSTRUCT {?s ?p ?o} FROM <http://red> WHERE {?s ?p ?o}";
  startTest(18, " Exec:  QUERY \"%s\" \n", query_cmd);
  {
    query=librdf_new_query(world, (char *)"vsparql", NULL, (const unsigned char *)query_cmd, NULL);

    if(!(results=librdf_model_query_execute(model, query))) {
      endTest(0, " Query of model with '%s' failed\n", query_cmd);
      librdf_free_query(query);
      query=NULL;
    } else {
      stream=librdf_query_results_as_stream(results);

      if(!stream) {
        endTest(0, " QUERY returned no results (NULL stream)\n");
      } else {
        librdf_node* ctxt=NULL;
        count=0;
        while(!librdf_stream_end(stream)) {
          librdf_statement *stmt=librdf_stream_get_object(stream);  /*returns SHARED pointer */
          ctxt=(librdf_node*)librdf_stream_get_context(stream);
          if(!stmt) {
              endTest(0, " librdf_stream_next returned NULL\n");
              break;
          }

          fputs("Matched triple: ", stdout);
          librdf_statement_print(stmt, stdout);
          if(ctxt) {
              fputs(" with context ", stdout);
              librdf_node_print(ctxt, stdout);
          }
          fputc('\n', stdout);

          count++;
          librdf_stream_next(stream);
        }
       librdf_free_stream(stream);

        endTest(1, " matching triples: %d\n", count);
        librdf_free_query_results(results);
      }
    }
    librdf_free_query(query);
  }


  /***** Test 19 *****/
  query_cmd=(char *)"SELECT * WHERE {graph <http://red> { ?s ?p ?o }}";
  startTest(19, " Exec1:  QUERY_AS_BINDINGS \"%s\" \n", query_cmd);
  {
    query=librdf_new_query(world, (char *)"vsparql", NULL, (const unsigned char *)query_cmd, NULL);

    if(!(results=librdf_model_query_execute(model, query))) {
        endTest(0, " Query of model with '%s' failed\n", query_cmd);
        librdf_free_query(query);
        query=NULL;
    } else {

        raptor_iostream *iostr;
        librdf_query_results_formatter *formatter;

        fprintf(stderr, "**: Formatting query result as '%s':\n", results_format);

        iostr = raptor_new_iostream_to_file_handle(librdf_world_get_raptor(world), stdout);
        formatter = librdf_new_query_results_formatter2(results, results_format,
                                                        NULL /* mime type */,
                                                        NULL /* format_uri */);

        base_uri = librdf_new_uri(world, (const unsigned char*)"http://example.org/");
        
        librdf_query_results_formatter_write(iostr, formatter, results, base_uri);
        librdf_free_query_results_formatter(formatter);
        raptor_free_iostream(iostr);
        librdf_free_uri(base_uri);

        endTest(1, "\n");
        librdf_free_query_results(results);
    }
    librdf_free_query(query);
  }


  /***** Test 20 *****/
  query_cmd=(char *)"SELECT * WHERE {graph <http://red> { ?s ?p ?o }}";
  startTest(20, " Exec2:  QUERY_AS_BINDINGS \"%s\" \n", query_cmd);
  {
    query=librdf_new_query(world, (char *)"vsparql", NULL, (const unsigned char *)query_cmd, NULL);

    if(!(results=librdf_model_query_execute(model, query))) {
       endTest(0, " Query of model with '%s' failed\n", query_cmd);
       librdf_free_query(query);
       query=NULL;
    } else {
       if(print_query_results(world, model, results))
         endTest(0, "\n");
       else
         endTest(1, "\n");

       librdf_free_query_results(results);
    }
    librdf_free_query(query);
  }

  getTotal();


  if(transactions)
    librdf_model_transaction_commit(model);

  librdf_free_node(context_node);
  librdf_free_node(context_node);
  librdf_free_hash(options);
  librdf_free_model(model);
  librdf_free_storage(storage);

  librdf_free_world(world);

#ifdef LIBRDF_MEMORY_DEBUG
  librdf_memory_report(stderr);
#endif
	
  /* keep gcc -Wall happy */
  return(0);
}