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;
}
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
}
int
print_query_results(librdf_world* world, librdf_model* model, librdf_query_results *results)
{
int i;
char *name;
librdf_stream* stream;
librdf_serializer* serializer;
const char *query_graph_serializer_syntax_name="rdfxml";
if(librdf_query_results_is_bindings(results)) {
fprintf(stdout, ": Query returned bindings results:\n");
while(!librdf_query_results_finished(results)) {
fputs("result: [", stdout);
for(i=0; i<librdf_query_results_get_bindings_count(results); i++) {
librdf_node *value=librdf_query_results_get_binding_value(results, i);
name=(char*)librdf_query_results_get_binding_name(results, i);
if(i>0)
fputs(", ", stdout);
fprintf(stdout, "%s=", name);
if(value) {
librdf_node_print(value, stdout);
librdf_free_node(value);
} else
fputs("NULL", stdout);
}
fputs("]\n", stdout);
librdf_query_results_next(results);
}
fprintf(stdout, ": Query returned %d results\n", librdf_query_results_get_count(results));
} else if(librdf_query_results_is_boolean(results)) {
fprintf(stdout, ": Query returned boolean result: %s\n", librdf_query_results_get_boolean(results) ? "true" : "false");
} else if(librdf_query_results_is_graph(results)) {
librdf_storage* tmp_storage;
librdf_model* tmp_model;
tmp_storage=librdf_new_storage(world, NULL, NULL, NULL);
tmp_model=librdf_new_model(world, tmp_storage, NULL);
fprintf(stdout, ": Query returned graph result:\n");
stream=librdf_query_results_as_stream(results);
if(!stream) {
fprintf(stderr, ": Failed to get query results graph\n");
return -1;
}
librdf_model_add_statements(tmp_model, stream);
librdf_free_stream(stream);
fprintf(stdout, ": Total %d triples\n", librdf_model_size(model));
serializer=librdf_new_serializer(world, query_graph_serializer_syntax_name, NULL, NULL);
if(!serializer) {
fprintf(stderr, ": Failed to create serializer type %s\n", query_graph_serializer_syntax_name);
return -1;
}
librdf_serializer_serialize_model_to_file_handle(serializer, stdout, NULL, tmp_model);
librdf_free_serializer(serializer);
librdf_free_model(tmp_model);
librdf_free_storage(tmp_storage);
} else {
fprintf(stdout, ": Query returned unknown result format\n");
return -1;
}
return 0;
}
