static int
print_graph_result(rasqal_query* rq,
rasqal_query_results *results,
raptor_world* raptor_world_ptr,
FILE* output,
const char* serializer_syntax_name, raptor_uri* base_uri,
int quiet)
{
int triple_count = 0;
rasqal_prefix* prefix;
int i;
raptor_serializer* serializer = NULL;
if(!quiet)
fprintf(stderr, "%s: Query has a graph result:\n", program);
if(!raptor_world_is_serializer_name(raptor_world_ptr, serializer_syntax_name)) {
fprintf(stderr,
"%s: invalid query result serializer name `%s' for `" HELP_ARG(r, results) "'\n",
program, serializer_syntax_name);
return 1;
}
serializer = raptor_new_serializer(raptor_world_ptr,
serializer_syntax_name);
if(!serializer) {
fprintf(stderr, "%s: Failed to create raptor serializer type %s\n",
program, serializer_syntax_name);
return(1);
}
/* Declare any query namespaces in the output serializer */
for(i = 0; (prefix = rasqal_query_get_prefix(rq, i)); i++)
raptor_serializer_set_namespace(serializer, prefix->uri, prefix->prefix);
raptor_serializer_start_to_file_handle(serializer, base_uri, output);
while(1) {
raptor_statement *rs = rasqal_query_results_get_triple(results);
if(!rs)
break;
raptor_serializer_serialize_statement(serializer, rs);
triple_count++;
if(rasqal_query_results_next_triple(results))
break;
}
raptor_serializer_serialize_end(serializer);
raptor_free_serializer(serializer);
if(!quiet)
fprintf(stderr, "%s: Total %d triples\n", program, triple_count);
return 0;
}
static int
librdf_query_rasqal_query_results_next_statement(void* context)
{
librdf_query_rasqal_stream_context* scontext=(librdf_query_rasqal_stream_context*)context;
if(scontext->finished)
return 1;
if(scontext->statement) {
librdf_free_statement(scontext->statement);
scontext->statement=NULL;
}
scontext->finished = !scontext->qcontext->results;
if(!scontext->finished)
scontext->finished=rasqal_query_results_next_triple(scontext->qcontext->results);
if(!scontext->finished)
librdf_query_rasqal_query_results_update_statement(scontext);
return scontext->finished;
}