RdfNode RdfStorePrivate::LibRdfNodeToRdfNode(librdf_node* node) const { RdfNode mitkNode; if (!node) return mitkNode; if (librdf_node_is_resource(node)) { mitkNode.SetType(RdfNode::URI); librdf_uri *uri = librdf_node_get_uri(node); mitkNode.SetValue(LibRdfUriToRdfUri(uri).ToString()); } else if (librdf_node_is_literal(node)) { mitkNode.SetType(RdfNode::LITERAL); std::string value = (const char*) librdf_node_get_literal_value(node); if (!value.empty()) mitkNode.SetValue(value); librdf_uri* typeUri = librdf_node_get_literal_value_datatype_uri(node); if (typeUri) mitkNode.SetDatatype(LibRdfUriToRdfUri(typeUri)); } else if (librdf_node_is_blank(node)) { mitkNode.SetType(RdfNode::BLANK); std::string str = (const char*) librdf_node_get_blank_identifier(node); if (!str.empty()) mitkNode.SetValue(str); } return mitkNode; }
/** * librdf_storage_tstore_context_add_statement: * @storage: #librdf_storage object * @context_node: #librdf_node object * @statement: #librdf_statement statement to add * * Add a statement to a storage context. * * Return value: non 0 on failure **/ static int librdf_storage_tstore_context_add_statement(librdf_storage* storage, librdf_node* context_node, librdf_statement* statement) { librdf_storage_tstore_instance* context=(librdf_storage_tstore_instance*)storage->instance; librdf_node *subject_node=statement->subject; librdf_node *predicate_node=statement->predicate; librdf_node *object_node=statement->object; char *subject; char *predicate; char *object; rs_obj_type type; if(librdf_node_is_blank(subject_node)) { subject=(char*)librdf_node_get_blank_identifier(subject_node); } else subject=(char*)librdf_uri_as_string(librdf_node_get_uri(subject_node)); predicate=(char*)librdf_uri_as_string(librdf_node_get_uri(predicate_node)); /* Assumptions - FIXME */ if(librdf_node_is_literal(object_node)) { object=(char*)librdf_node_get_literal_value(object_node); type = ObjLiteral; } else if(librdf_node_is_blank(object_node)) { object=(char*)librdf_node_get_blank_identifier(object_node); type = ObjURI; } else { object=(char*)librdf_uri_as_string(librdf_node_get_uri(object_node)); type = ObjURI; } if(rs_assert_triple(context->rdfsql, subject, predicate, object, type)) return 1; return 0; }
/* FIXME returns an alloced triple pointing to shared strings */ static rs_triple* librdf_storage_tstore_statement_as_rs_triple(librdf_statement *statement) { librdf_node *subject_node=statement->subject; librdf_node *predicate_node=statement->predicate; librdf_node *object_node=statement->object; rs_triple* triple=LIBRDF_MALLOC(rs_triple, sizeof(rs_triple)); if(subject_node) { if(librdf_node_is_blank(subject_node)) triple->subject=(char*)librdf_node_get_blank_identifier(subject_node); else triple->subject=(char*)librdf_uri_as_string(librdf_node_get_uri(subject_node)); } else triple->subject=NULL; if(predicate_node) triple->predicate=(char*)librdf_uri_as_string(librdf_node_get_uri(predicate_node)); else triple->predicate=NULL; /* Assumptions - FIXME */ triple->literal = 0; if(object_node) { if(librdf_node_is_literal(object_node)) { triple->object=(char*)librdf_node_get_literal_value(object_node); triple->literal = 1; } else if(librdf_node_is_blank(object_node)) { triple->object=(char*)librdf_node_get_blank_identifier(object_node); } else { triple->object=(char*)librdf_uri_as_string(librdf_node_get_uri(object_node)); } } else triple->object=NULL; return triple; }
/** * librdf_statement_is_complete: * @statement: #librdf_statement object * * Check if statement is a complete and legal RDF triple. * * Checks that all subject, predicate, object fields are present * and they have the allowed node types. * * Return value: non 0 if the statement is complete and legal **/ int librdf_statement_is_complete(librdf_statement *statement) { LIBRDF_ASSERT_OBJECT_POINTER_RETURN_VALUE(statement, librdf_statement, 0); if(!statement->subject || (!librdf_node_is_resource(statement->subject) && !librdf_node_is_blank(statement->subject))) return 0; if(!statement->predicate || !librdf_node_is_resource(statement->predicate)) return 0; if(!statement->object) return 0; return 1; }
static void librdf_serializer_print_statement_as_ntriple(librdf_statement * statement, FILE *stream) { librdf_node *subject=librdf_statement_get_subject(statement); librdf_node *predicate=librdf_statement_get_predicate(statement); librdf_node *object=librdf_statement_get_object(statement); char *lang=NULL; librdf_uri *dt_uri=NULL; if(librdf_node_is_blank(subject)) fprintf(stream, "_:%s", librdf_node_get_blank_identifier(subject)); else if(librdf_node_is_resource(subject)) { /* Must be a URI */ fputc('<', stream); raptor_print_ntriples_string(stream, librdf_uri_as_string(librdf_node_get_uri(subject)), '\0'); fputc('>', stream); } else { LIBRDF_ERROR2(statement->world, "Do not know how to print triple subject type %d\n", librdf_node_get_type(subject)); return; } if(!librdf_node_is_resource(predicate)) { LIBRDF_ERROR2(statement->world, "Do not know how to print triple predicate type %d\n", librdf_node_get_type(predicate)); return; } fputc(' ', stream); fputc('<', stream); raptor_print_ntriples_string(stream, librdf_uri_as_string(librdf_node_get_uri(predicate)), '\0'); fputc('>', stream); fputc(' ', stream); switch(librdf_node_get_type(object)) { case LIBRDF_NODE_TYPE_LITERAL: fputc('"', stream); raptor_print_ntriples_string(stream, librdf_node_get_literal_value(object), '"'); fputc('"', stream); lang=librdf_node_get_literal_value_language(object); dt_uri=librdf_node_get_literal_value_datatype_uri(object); if(lang) { fputc('@', stream); fputs(lang, stream); } if(dt_uri) { fputs("^^<", stream); raptor_print_ntriples_string(stream, librdf_uri_as_string(dt_uri), '\0'); fputc('>', stream); } break; case LIBRDF_NODE_TYPE_BLANK: fputs("_:", stream); fputs((const char*)librdf_node_get_blank_identifier(object), stream); break; case LIBRDF_NODE_TYPE_RESOURCE: fputc('<', stream); raptor_print_ntriples_string(stream, librdf_uri_as_string(librdf_node_get_uri(object)), '\0'); fputc('>', stream); break; default: LIBRDF_ERROR2(statement->world, "Do not know how to print triple object type %d\n", librdf_node_get_type(object)); return; } fputs(" .", stream); }
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 }