/*
* call-seq:
* graph.size => fixnum
*
* Return the number of statements in the graph. If the underlying store doesn't support
* fetching the size of the graph, the return value will be negative.
*
*/
static VALUE
rleaf_redleaf_graph_size( VALUE self ) {
rleaf_GRAPH *graph = rleaf_get_graph( self );
int size = librdf_model_size( graph->model );
return INT2FIX( size );
}
/*
* call-seq:
* graph.load( uri ) -> Fixnum
*
* Parse the RDF at the specified +uri+ into the receiving graph. Returns the number of statements
* added to the graph (if the underlying store supports ).
*
* graph = Redleaf::Graph.new
* graph.load( "http://bigasterisk.com/foaf.rdf" )
* graph.load( "http://www.w3.org/People/Berners-Lee/card.rdf" )
* graph.load( "http://danbri.livejournal.com/data/foaf" )
*
* graph.size
*/
static VALUE
rleaf_redleaf_graph_load( VALUE self, VALUE uri ) {
rleaf_GRAPH *ptr = rleaf_get_graph( self );
librdf_parser *parser = NULL;
librdf_uri *rdfuri = NULL;
int statement_count = librdf_model_size( ptr->model );
if ( (parser = librdf_new_parser( rleaf_rdf_world, NULL, NULL, NULL )) == NULL )
rb_raise( rleaf_eRedleafError, "failed to create a parser." );
rdfuri = rleaf_object_to_librdf_uri( uri );
if ( librdf_parser_parse_into_model(parser, rdfuri, NULL, ptr->model) != 0 )
rb_raise( rleaf_eRedleafError, "failed to load %s into %s",
librdf_uri_as_string(rdfuri), RSTRING_PTR(rb_inspect( self )) );
return INT2FIX( librdf_model_size(ptr->model) - statement_count );
}
/*
* call-seq:
* graph.statements -> array
*
* Return an Array of all the statements in the graph.
*
*/
static VALUE
rleaf_redleaf_graph_statements( VALUE self ) {
rleaf_GRAPH *ptr = rleaf_get_graph( self );
librdf_stream *stream = librdf_model_as_stream( ptr->model );
VALUE statements = rb_ary_new();
rleaf_log_with_context( self, "debug",
"Creating statement objects for %d statements in Graph <0x%x>.",
librdf_model_size(ptr->model), self );
while ( ! librdf_stream_end(stream) ) {
librdf_statement *stmt = librdf_stream_get_object( stream );
VALUE stmt_obj = rleaf_librdf_statement_to_value( stmt );
rb_ary_push( statements, stmt_obj );
librdf_stream_next( stream );
}
librdf_free_stream( stream );
return statements;
}
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
}
static int
librdf_storage_file_size(librdf_storage* storage)
{
librdf_storage_file_instance* context=(librdf_storage_file_instance*)storage->instance;
return librdf_model_size(context->model);
}
int main(int argc, char** argv)
{
try {
/*********************************************************************/
/* Initialise */
/*********************************************************************/
std::cout << "** Initialise" << std::endl;
librdf_world* world = librdf_new_world();
if (world == 0)
throw std::runtime_error("Didn't get world");
librdf_storage* storage =
librdf_new_storage(world, STORE, STORE_NAME, "new='yes'");
if (storage == 0)
throw std::runtime_error("Didn't get storage");
librdf_model* model =
librdf_new_model(world, storage, 0);
if (model == 0)
throw std::runtime_error("Couldn't construct model");
/*********************************************************************/
/* Create in-memory model */
/*********************************************************************/
std::cout << "** Create in-memory model" << std::endl;
librdf_storage* mstorage =
librdf_new_storage(world, "memory", 0, 0);
if (storage == 0)
throw std::runtime_error("Didn't get storage");
librdf_model* mmodel =
librdf_new_model(world, mstorage, 0);
if (model == 0)
throw std::runtime_error("Couldn't construct model");
for(int i = 0; i < 10; i++) {
char sbuf[256];
char obuf[256];
sprintf(sbuf, "http://gaffer.test/number#%d", i);
sprintf(obuf, "http://gaffer.test/number#%d", i+1);
librdf_node *s =
librdf_new_node_from_uri_string(world,
(const unsigned char *) sbuf);
librdf_node *p =
librdf_new_node_from_uri_string(world,
(const unsigned char *)
"http://gaffer.test/number#is_before");
librdf_node *o =
librdf_new_node_from_uri_string(world,
(const unsigned char*) obuf);
librdf_statement* st = librdf_new_statement_from_nodes(world,
s, p, o);
librdf_model_add_statement(mmodel, st);
librdf_free_statement(st);
}
/*********************************************************************/
/* Size */
/*********************************************************************/
std::cout << "** Model size is " << librdf_model_size(model)
<< std::endl;
/*********************************************************************/
/* Add statement */
/*********************************************************************/
std::cout << "** Add statement" << std::endl;
const char* fred = "http://gaffer.test/#fred";
const char* is_a = "http://gaffer.test/#is_a";
const char* cat = "http://gaffer.test/#cat";
librdf_node *s =
librdf_new_node_from_uri_string(world,
(const unsigned char *) fred);
librdf_node *p =
librdf_new_node_from_uri_string(world,
(const unsigned char *) is_a);
librdf_node *o =
librdf_new_node_from_uri_string(world,
(const unsigned char *) cat);
librdf_statement* st = librdf_new_statement_from_nodes(world, s, p, o);
librdf_model_add_statement(model, st);
/*********************************************************************/
/* Add memory model statements */
/*********************************************************************/
std::cout << "** Add statements" << std::endl;
librdf_stream* strm = librdf_model_as_stream(mmodel);
if (strm == 0)
throw std::runtime_error("Couldn't get memory stream");
int ret = librdf_model_add_statements(model, strm);
if (ret != 0)
throw std::runtime_error("Couldn't add_statements");
librdf_free_stream(strm);
librdf_free_model(mmodel);
librdf_free_storage(mstorage);
/*********************************************************************/
/* Run queries */
/*********************************************************************/
run_query(world, model, query_string8);
run_query(world, model, query_string1);
run_query(world, model, query_string2);
run_query(world, model, query_string3);
run_query(world, model, query_string4);
run_query(world, model, query_string5);
run_query(world, model, query_string6);
run_query2(world, model, query_string7);
/*********************************************************************/
/* Remove statement */
/*********************************************************************/
std::cout << "** Remove statements" << std::endl;
librdf_model_remove_statement(model, st);
/*********************************************************************/
/* Serialise */
/*********************************************************************/
std::cout << "** Serialise" << std::endl;
strm = librdf_model_as_stream(model);
if (strm == 0)
throw std::runtime_error("Couldn't get model as stream");
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_stream(strm);
librdf_free_serializer(srl);
/*********************************************************************/
/* Cleanup */
/*********************************************************************/
librdf_free_statement(st);
librdf_free_model(model);
librdf_free_storage(storage);
librdf_free_world(world);
} catch (std::exception& e) {
std::cerr << e.what() << std::endl;
}
}
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);
}
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;
}
