bool RdfStorePrivate::Contains(RdfTriple triple)
{
librdf_statement* statement = RdfTripleToStatement(triple);
// if 0 there is no triple
if (librdf_model_contains_statement(m_Model, statement) == 0) {
librdf_free_statement(statement);
return false;
}
else
{
librdf_free_statement(statement);
return true;
}
return false;
}
static void
librdf_stream_from_node_iterator_finished(void* context)
{
librdf_stream_from_node_iterator_stream_context* scontext=(librdf_stream_from_node_iterator_stream_context*)context;
if(scontext->iterator)
librdf_free_iterator(scontext->iterator);
if(scontext->current) {
switch(scontext->field) {
case LIBRDF_STATEMENT_SUBJECT:
librdf_statement_set_subject(scontext->current, NULL);
break;
case LIBRDF_STATEMENT_PREDICATE:
librdf_statement_set_predicate(scontext->current, NULL);
break;
case LIBRDF_STATEMENT_OBJECT:
librdf_statement_set_object(scontext->current, NULL);
break;
case LIBRDF_STATEMENT_ALL:
default:
librdf_log(scontext->iterator->world,
0, LIBRDF_LOG_ERROR, LIBRDF_FROM_STREAM, NULL,
"Illegal statement field %d seen", scontext->field);
}
librdf_free_statement(scontext->current);
}
LIBRDF_FREE(librdf_stream_from_node_iterator_stream_context, scontext);
}
int add_triple_typed(librdf_world *world, librdf_node *context, librdf_model* model, const char *s, const char *p, const char *o)
{
librdf_node *subject, *predicate, *object;
librdf_statement* statement=NULL;
int rc;
if(librdf_heuristic_is_blank_node(s))
subject=librdf_new_node_from_blank_identifier(world, (const unsigned char *)librdf_heuristic_get_blank_node(s));
else
subject=librdf_new_node_from_uri_string(world, (const unsigned char *)s);
predicate=librdf_new_node_from_uri_string(world, (const unsigned char *)p);
if(librdf_heuristic_is_blank_node(o))
object=librdf_new_node_from_blank_identifier(world, (const unsigned char *)librdf_heuristic_get_blank_node(o));
else
object=librdf_new_node_from_literal(world, (const unsigned char *)o, NULL, 0);
statement=librdf_new_statement(world);
librdf_statement_set_subject(statement, subject);
librdf_statement_set_predicate(statement, predicate);
librdf_statement_set_object(statement, object);
rc=librdf_model_context_add_statement(model, context, statement);
librdf_free_statement(statement);
return rc;
}
static void
cassandra_results_stream_finished(void* context)
{
cassandra_results_stream* scontext;
scontext = (cassandra_results_stream*)context;
if (scontext->iter)
cass_iterator_free(scontext->iter);
if (scontext->result)
cass_result_free(scontext->result);
if (scontext->stmt)
cass_statement_free(scontext->stmt);
if(scontext->storage)
librdf_storage_remove_reference(scontext->storage);
if(scontext->statement)
librdf_free_statement(scontext->statement);
if(scontext->context)
librdf_free_node(scontext->context);
LIBRDF_FREE(librdf_storage_cassandra_find_statements_stream_context, scontext);
}
/*
* call-seq:
* graph.search( subject, predicate, object ) -> array
* graph[ subject, predicate, object ] -> array
*
* Search for statements in the graph with the specified +subject+, +predicate+, and +object+ and
* return them. If +subject+, +predicate+, or +object+ are nil, they will match any value.
*
* # Match any statements about authors
* graph.load( 'http://deveiant.livejournal.com/data/foaf' )
*
* #
* graph[ nil, FOAF[:knows], nil ] # => [...]
*/
static VALUE
rleaf_redleaf_graph_search( VALUE self, VALUE subject, VALUE predicate, VALUE object ) {
rleaf_GRAPH *ptr = rleaf_get_graph( self );
librdf_node *subject_node, *predicate_node, *object_node;
librdf_statement *search_statement, *stmt;
librdf_stream *stream;
int count = 0;
VALUE rval = rb_ary_new();
rleaf_log_with_context( self, "debug", "searching for statements matching {%s, %s, %s}",
RSTRING_PTR(rb_inspect(subject)),
RSTRING_PTR(rb_inspect(predicate)),
RSTRING_PTR(rb_inspect(object)) );
subject_node = rleaf_value_to_subject_node( subject );
predicate_node = rleaf_value_to_predicate_node( predicate );
object_node = rleaf_value_to_object_node( object );
search_statement = librdf_new_statement_from_nodes( rleaf_rdf_world, subject_node, predicate_node, object_node );
if ( !search_statement )
rb_raise( rleaf_eRedleafError, "could not create a statement from nodes [%s, %s, %s]",
RSTRING_PTR(rb_inspect(subject)),
RSTRING_PTR(rb_inspect(predicate)),
RSTRING_PTR(rb_inspect(object)) );
stream = librdf_model_find_statements( ptr->model, search_statement );
if ( !stream ) {
librdf_free_statement( search_statement );
rb_raise( rleaf_eRedleafError, "could not create a stream when searching" );
}
while ( ! librdf_stream_end(stream) ) {
stmt = librdf_stream_get_object( stream );
if ( !stmt ) break;
count++;
rb_ary_push( rval, rleaf_librdf_statement_to_value(stmt) );
librdf_stream_next( stream );
}
rleaf_log_with_context( self, "debug", "found %d statements", count );
librdf_free_stream( stream );
librdf_free_statement( search_statement );
return rval;
}
static void*
cassandra_results_stream_get_statement(void* context, int flags)
{
cassandra_results_stream* scontext;
const char* s;
size_t s_len;
const char* p;
size_t p_len;
const char* o;
size_t o_len;
const CassRow* row;
scontext = (cassandra_results_stream*)context;
switch(flags) {
case LIBRDF_ITERATOR_GET_METHOD_GET_OBJECT:
row = cass_iterator_get_row(scontext->iter);
cass_value_get_string(cass_row_get_column(row, 0), &s, &s_len);
cass_value_get_string(cass_row_get_column(row, 1), &p, &p_len);
cass_value_get_string(cass_row_get_column(row, 2), &o, &o_len);
if (scontext->statement) {
librdf_free_statement(scontext->statement);
scontext->statement = 0;
}
librdf_node* sn, * pn, * on;
sn = node_constructor_helper(scontext->storage->world, s, s_len);
pn = node_constructor_helper(scontext->storage->world, p, p_len);
on = node_constructor_helper(scontext->storage->world, o, o_len);
if (sn == 0 || pn == 0 || on == 0) {
if (sn) librdf_free_node(sn);
if (pn) librdf_free_node(pn);
if (on) librdf_free_node(on);
return 0;
}
scontext->statement =
librdf_new_statement_from_nodes(scontext->storage->world,
sn, pn, on);
return scontext->statement;
case LIBRDF_ITERATOR_GET_METHOD_GET_CONTEXT:
return scontext->context;
default:
librdf_log(scontext->storage->world,
0, LIBRDF_LOG_ERROR, LIBRDF_FROM_STORAGE, NULL,
"Unknown iterator method flag %d", flags);
return NULL;
}
}
/**
* @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;
}
/*
* call-seq:
* graph.remove( statement ) -> array
*
* Removes one or more statements from the graph that match the specified +statement+
* (either a Redleaf::Statement or a valid triple in an Array) and returns any that
* were removed.
*
* Any +nil+ values in the statement will match any value.
*
* # Set a new home page for the Redleaf project, preserving the old one
* # as the 'old_homepage'
* stmt = graph.remove([ :Redleaf, DOAP[:homepage], nil ])
* stmt.predicate = DOAP[:old_homepage]
* graph.append( stmt )
* graph.append([ :Redleaf, DOAP[:homepage],
* URL.parse('http://deveiate.org/projects/Redleaf') ])
*/
static VALUE
rleaf_redleaf_graph_remove( VALUE self, VALUE statement ) {
rleaf_GRAPH *ptr = rleaf_get_graph( self );
librdf_statement *search_statement, *stmt;
librdf_stream *stream;
int count = 0;
VALUE rval = rb_ary_new();
rleaf_log_with_context( self, "debug", "removing statements matching %s",
RSTRING_PTR(rb_inspect(statement)) );
search_statement = rleaf_value_to_librdf_statement( statement );
stream = librdf_model_find_statements( ptr->model, search_statement );
if ( !stream ) {
librdf_free_statement( search_statement );
rb_raise( rleaf_eRedleafError, "could not create a stream when removing %s from %s",
RSTRING_PTR(rb_inspect(statement)),
RSTRING_PTR(rb_inspect(self)) );
}
while ( ! librdf_stream_end(stream) ) {
if ( (stmt = librdf_stream_get_object( stream )) == NULL ) break;
count++;
rb_ary_push( rval, rleaf_librdf_statement_to_value(stmt) );
if ( librdf_model_remove_statement(ptr->model, stmt) != 0 ) {
librdf_free_stream( stream );
librdf_free_statement( search_statement );
rb_raise( rleaf_eRedleafError, "failed to remove statement from model" );
}
librdf_stream_next( stream );
}
rleaf_log_with_context( self, "debug", "removed %d statements", count );
librdf_free_stream( stream );
librdf_free_statement( search_statement );
return rval;
}
static void
librdf_query_rasqal_query_results_finished(void* context)
{
librdf_query_rasqal_stream_context* scontext=(librdf_query_rasqal_stream_context*)context;
if(scontext) {
if(scontext->statement)
librdf_free_statement(scontext->statement);
LIBRDF_FREE(librdf_query_rasqal_context, scontext);
}
}
/**
* librdf_new_statement_from_statement:
* @statement: #librdf_statement to copy
*
* Copy constructor - create a new librdf_statement from an existing librdf_statement.
*
* Return value: a new #librdf_statement with copy or NULL on failure
**/
librdf_statement*
librdf_new_statement_from_statement(librdf_statement* statement)
{
librdf_statement* new_statement;
LIBRDF_ASSERT_OBJECT_POINTER_RETURN_VALUE(statement, librdf_statement, NULL);
if(!statement)
return NULL;
new_statement = librdf_new_statement(statement->world);
if(!new_statement)
return NULL;
if(statement->subject) {
new_statement->subject=librdf_new_node_from_node(statement->subject);
if(!new_statement->subject) {
librdf_free_statement(new_statement);
return NULL;
}
}
if(statement->predicate) {
new_statement->predicate=librdf_new_node_from_node(statement->predicate);
if(!new_statement->predicate) {
librdf_free_statement(new_statement);
return NULL;
}
}
if(statement->object) {
new_statement->object=librdf_new_node_from_node(statement->object);
if(!new_statement->object) {
librdf_free_statement(new_statement);
return NULL;
}
}
return new_statement;
}
bool RdfStorePrivate::Add(RdfTriple triple)
{
librdf_statement* statement = RdfTripleToStatement(triple);
if (!CheckComplete(statement))
{
librdf_free_statement(statement);
return false;
}
// Store already contains statement
if (Contains(triple)) return true;
if (librdf_model_add_statement(m_Model, statement) != 0) {
librdf_free_statement(statement);
return false;
}
else
{
librdf_free_statement(statement);
return true;
}
}
bool RdfStorePrivate::Remove(RdfTriple triple)
{
librdf_statement* statement = RdfTripleToStatement(triple);
if (!CheckComplete(statement))
{
librdf_free_statement(statement);
return false;
}
// Store does not contain statement
if (!Contains(triple)) return true;
if (librdf_model_remove_statement(m_Model, statement) != 0) {
librdf_free_statement(statement);
return false;
}
else
{
librdf_free_statement(statement);
return true;
}
return false;
}
static void
rasqal_redland_finish_triples_match(struct rasqal_triples_match_s* rtm,
void *user_data)
{
rasqal_redland_triples_match_context* rtmc=(rasqal_redland_triples_match_context*)rtm->user_data;
if(rtmc) {
if(rtmc->stream) {
librdf_free_stream(rtmc->stream);
rtmc->stream=NULL;
}
if(rtmc->qstatement)
librdf_free_statement(rtmc->qstatement);
LIBRDF_FREE(rasqal_redland_triples_match_context, rtmc);
}
}
static librdf_stream*
librdf_storage_cassandra_serialise(librdf_storage* storage)
{
librdf_statement* stmt =
librdf_new_statement_from_nodes(storage->world,
0, 0, 0);
librdf_stream* strm = librdf_storage_cassandra_find_statements(storage,
stmt);
librdf_free_statement(stmt);
return strm;
}
int
main(int argc, char *argv[])
{
librdf_world* world;
librdf_storage *storage;
librdf_model* model;
librdf_statement* statement;
raptor_world *raptor_world_ptr;
raptor_iostream* iostr;
world=librdf_new_world();
librdf_world_open(world);
raptor_world_ptr = librdf_world_get_raptor(world);
model=librdf_new_model(world, storage=librdf_new_storage(world, "hashes", "test", "hash-type='bdb',dir='.'"), NULL);
librdf_model_add_statement(model,
statement=librdf_new_statement_from_nodes(world, librdf_new_node_from_uri_string(world, (const unsigned char*)"http://www.dajobe.org/"),
librdf_new_node_from_uri_string(world, (const unsigned char*)"http://purl.org/dc/elements/1.1/creator"),
librdf_new_node_from_literal(world, (const unsigned char*)"Dave Beckett", NULL, 0)
)
);
librdf_free_statement(statement);
iostr = raptor_new_iostream_to_file_handle(raptor_world_ptr, stdout);
librdf_model_write(model, iostr);
raptor_free_iostream(iostr);
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);
}
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;
}
static int
rasqal_redland_triple_present(rasqal_triples_source *rts, void *user_data,
rasqal_triple *t)
{
rasqal_redland_triples_source_user_data* rtsc=(rasqal_redland_triples_source_user_data*)user_data;
librdf_node* nodes[3];
librdf_statement *s;
int rc;
/* ASSUMPTION: all the parts of the triple are not variables */
/* FIXME: and no error checks */
nodes[0]=rasqal_literal_to_redland_node(rtsc->world, t->subject);
nodes[1]=rasqal_literal_to_redland_node(rtsc->world, t->predicate);
nodes[2]=rasqal_literal_to_redland_node(rtsc->world, t->object);
s=librdf_new_statement_from_nodes(rtsc->world, nodes[0], nodes[1], nodes[2]);
rc=librdf_model_contains_statement(rtsc->model, s);
librdf_free_statement(s);
return rc;
}
bool RdfNode::dummy()
{
librdf_world* world;
librdf_storage *storage;
librdf_model* model;
librdf_statement* statement;
raptor_world *raptor_world_ptr;
raptor_iostream* iostr;
world=librdf_new_world();
librdf_world_open(world);
raptor_world_ptr = librdf_world_get_raptor(world);
model=librdf_new_model(world, storage=librdf_new_storage(world, "hashes", nullptr, "hash-type='memory'"), nullptr);
librdf_model_add_statement(model,
statement=librdf_new_statement_from_nodes(world, librdf_new_node_from_uri_string(world, (const unsigned char*)"http://www.dajobe.org/"),
librdf_new_node_from_uri_string(world, (const unsigned char*)"http://purl.org/dc/elements/1.1/creator"),
librdf_new_node_from_literal(world, (const unsigned char*)"Dave Beckett", nullptr, 0)
)
);
librdf_free_statement(statement);
iostr = raptor_new_iostream_to_file_handle(raptor_world_ptr, stdout);
librdf_model_write(model, iostr);
raptor_free_iostream(iostr);
librdf_free_model(model);
librdf_free_storage(storage);
librdf_free_world(world);
#ifdef LIBRDF_MEMORY_DEBUG
librdf_memory_report(stderr);
#endif
return true;
}
/*
* call-seq:
* graph.include?( statement ) -> true or false
* graph.contains?( statement ) -> true or false
*
* Return +true+ if the receiver contains the specified +statement+, which can be either a
* Redleaf::Statement object or a valid triple in an Array.
*
*/
static VALUE
rleaf_redleaf_graph_include_p( VALUE self, VALUE statement ) {
rleaf_GRAPH *ptr = rleaf_get_graph( self );
librdf_statement *stmt;
librdf_stream *stream;
VALUE rval = Qfalse;
rleaf_log_with_context( self, "debug", "checking for statement matching %s",
RSTRING_PTR(rb_inspect(statement)) );
stmt = rleaf_value_to_librdf_statement( statement );
/* According to the Redland docs, this is a better way to test this than
librdf_model_contains_statement if the model has contexts. Since we want
to support contexts, it's easier just to assume that they're always enabled.
*/
stream = librdf_model_find_statements( ptr->model, stmt );
if ( stream != NULL && !librdf_stream_end(stream) ) rval = Qtrue;
librdf_free_stream( stream );
librdf_free_statement( stmt );
return rval;
}
static void
librdf_storage_stream_to_node_iterator_finished(void* iterator)
{
librdf_storage_stream_to_node_iterator_context* context=(librdf_storage_stream_to_node_iterator_context*)iterator;
librdf_statement *partial_statement=context->partial_statement;
/* make sure librdf_free_statement() doesn't free anything here */
if(partial_statement) {
librdf_statement_set_subject(partial_statement, NULL);
librdf_statement_set_predicate(partial_statement, NULL);
librdf_statement_set_object(partial_statement, NULL);
librdf_free_statement(partial_statement);
}
if(context->stream)
librdf_free_stream(context->stream);
if(context->storage)
librdf_storage_remove_reference(context->storage);
LIBRDF_FREE(librdf_storage_stream_to_node_iterator_context, context);
}
/*
* librdf_parser_raptor_new_statement_handler - helper callback function for raptor RDF when a new triple is asserted
* @context: context for callback
* @statement: raptor_statement
*
* Adds the statement to the list of statements.
*/
static void
librdf_parser_raptor_new_statement_handler(void *context,
raptor_statement *rstatement)
{
librdf_parser_raptor_stream_context* scontext=(librdf_parser_raptor_stream_context*)context;
librdf_node* node;
librdf_statement* statement;
librdf_world* world=scontext->pcontext->parser->world;
int rc;
statement=librdf_new_statement(world);
if(!statement)
return;
if(rstatement->subject->type == RAPTOR_TERM_TYPE_BLANK) {
node = librdf_new_node_from_blank_identifier(world, (const unsigned char*)rstatement->subject->value.blank.string);
} else if (rstatement->subject->type == RAPTOR_TERM_TYPE_URI) {
node = librdf_new_node_from_uri(world, (librdf_uri*)rstatement->subject->value.uri);
} else {
librdf_log(world,
0, LIBRDF_LOG_ERROR, LIBRDF_FROM_PARSER, NULL,
"Unknown Raptor subject identifier type %d",
rstatement->subject->type);
librdf_free_statement(statement);
return;
}
if(!node) {
librdf_log(world,
0, LIBRDF_LOG_FATAL, LIBRDF_FROM_PARSER, NULL,
"Cannot create subject node");
librdf_free_statement(statement);
return;
}
librdf_statement_set_subject(statement, node);
if(rstatement->predicate->type == RAPTOR_TERM_TYPE_URI) {
node = librdf_new_node_from_uri(world, (librdf_uri*)rstatement->predicate->value.uri);
} else {
librdf_log(world,
0, LIBRDF_LOG_ERROR, LIBRDF_FROM_PARSER, NULL,
"Unknown Raptor predicate identifier type %d",
rstatement->predicate->type);
librdf_free_statement(statement);
return;
}
if(!node) {
librdf_log(world,
0, LIBRDF_LOG_FATAL, LIBRDF_FROM_PARSER, NULL,
"Cannot create predicate node");
librdf_free_statement(statement);
return;
}
librdf_statement_set_predicate(statement, node);
if(rstatement->object->type == RAPTOR_TERM_TYPE_LITERAL) {
node = librdf_new_node_from_typed_literal(world,
rstatement->object->value.literal.string,
(const char *)rstatement->object->value.literal.language,
(librdf_uri*)rstatement->object->value.literal.datatype);
} else if(rstatement->object->type == RAPTOR_TERM_TYPE_BLANK) {
node = librdf_new_node_from_blank_identifier(world, rstatement->object->value.blank.string);
} else if(rstatement->object->type == RAPTOR_TERM_TYPE_URI) {
node = librdf_new_node_from_uri(world, (librdf_uri*)rstatement->object->value.uri);
} else {
librdf_log(world,
0, LIBRDF_LOG_ERROR, LIBRDF_FROM_PARSER, NULL,
"Unknown Raptor object identifier type %d",
rstatement->object->type);
librdf_free_statement(statement);
return;
}
if(!node) {
librdf_log(world,
0, LIBRDF_LOG_FATAL, LIBRDF_FROM_PARSER, NULL,
"Cannot create object node");
librdf_free_statement(statement);
return;
}
librdf_statement_set_object(statement, node);
#if defined(LIBRDF_DEBUG) && LIBRDF_DEBUG > 1
if(1) {
raptor_iostream *iostr;
iostr = raptor_new_iostream_to_file_handle(world->raptor_world_ptr, stderr);
librdf_statement_write(statement, iostr);
raptor_free_iostream(iostr);
}
#endif
if(scontext->model) {
rc=librdf_model_add_statement(scontext->model, statement);
librdf_free_statement(statement);
} else {
rc=librdf_list_add(scontext->statements, statement);
if(rc)
librdf_free_statement(statement);
}
if(rc) {
librdf_log(world,
0, LIBRDF_LOG_FATAL, LIBRDF_FROM_PARSER, NULL,
"Cannot add statement to 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_statement *statement, *statement2;
int size, size2;
const char *program=librdf_basename((const char*)argv[0]);
char *s, *buffer;
librdf_world *world;
raptor_iostream *iostr;
world=librdf_new_world();
librdf_world_open(world);
iostr = raptor_new_iostream_to_file_handle(world->raptor_world_ptr, stdout);
fprintf(stdout, "%s: Creating statement\n", program);
statement=librdf_new_statement(world);
fprintf(stdout, "%s: Empty statement: ", program);
librdf_statement_write(statement, iostr);
fputs("\n", stdout);
librdf_statement_set_subject(statement, librdf_new_node_from_uri_string(world, (const unsigned char*)"http://purl.org/net/dajobe/"));
librdf_statement_set_predicate(statement, librdf_new_node_from_uri_string(world, (const unsigned char*)"http://purl.org/dc/elements/1.1/#Creator"));
librdf_statement_set_object(statement, librdf_new_node_from_literal(world, (const unsigned char*)"Dave Beckett", NULL, 0));
fprintf(stdout, "%s: Resulting statement: ", program);
librdf_statement_write(statement, iostr);
fputs("\n", stdout);
size = librdf_statement_encode2(world, statement, NULL, 0);
fprintf(stdout, "%s: Encoding statement requires %d bytes\n", program, size);
buffer=(char*)LIBRDF_MALLOC(cstring, size);
fprintf(stdout, "%s: Encoding statement in buffer\n", program);
size2 = librdf_statement_encode2(world, statement,
(unsigned char*)buffer, size);
if(size2 != size) {
fprintf(stdout, "%s: Encoding statement used %d bytes, expected it to use %d\n", program, size2, size);
return(1);
}
fprintf(stdout, "%s: Creating new statement\n", program);
statement2=librdf_new_statement(world);
fprintf(stdout, "%s: Decoding statement from buffer\n", program);
if(!librdf_statement_decode2(world, statement2, NULL,
(unsigned char*)buffer, size)) {
fprintf(stdout, "%s: Decoding statement failed\n", program);
return(1);
}
LIBRDF_FREE(cstring, buffer);
fprintf(stdout, "%s: New statement is: ", program);
librdf_statement_write(statement, iostr);
fputs("\n", stdout);
fprintf(stdout, "%s: Freeing statements\n", program);
librdf_free_statement(statement2);
librdf_free_statement(statement);
librdf_free_world(world);
/* keep gcc -Wall happy */
return(0);
}
void reasoning(sib_data_structure* param, ssTriple_t* t, gboolean* enable_real_reasoning)
{
librdf_statement* statement;
//Insert object as class
if(strcmp(t->predicate,rdf_ex "type")==0 && strcmp(t->object,rdfs_ex "Class")!=0)
{
statement=librdf_new_statement(param->RDF_world);
librdf_statement_set_subject(statement,librdf_new_node_from_uri_string(param->RDF_world, t->object));
librdf_statement_set_predicate(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdf_ex "type"));
librdf_statement_set_object(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdfs_ex "Class"));
librdf_model_add_statement(param->RDF_model, statement);
//FOR SUBSCRIBE
statement_in_tl(&(param->RDF_list_insert),statement);
//librdf_model_add_statement(param->RDF_model_insert, statement);
librdf_free_statement(statement);
if (enable_real_reasoning)
//////////////////////////////////////////////
{
check_subtype_and_add(param, t->subject,t->object);
}
///////////////////////////////////////////////
}
//Insert subject and object as class
else if(strcmp(t->predicate,rdfs_ex "subClassOf")==0)
{
statement=librdf_new_statement(param->RDF_world);
librdf_statement_set_subject(statement,librdf_new_node_from_uri_string(param->RDF_world, t->subject));
librdf_statement_set_predicate(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdf_ex "type"));
librdf_statement_set_object(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdfs_ex "Class"));
librdf_model_add_statement(param->RDF_model, statement);
//FOR SUBSCRIBE
statement_in_tl(&(param->RDF_list_insert),statement);
//librdf_model_add_statement(param->RDF_model_insert, statement);
librdf_free_statement(statement);
statement=librdf_new_statement(param->RDF_world);
librdf_statement_set_subject(statement,librdf_new_node_from_uri_string(param->RDF_world, t->object));
librdf_statement_set_predicate(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdf_ex "type"));
librdf_statement_set_object(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdfs_ex "Class"));
librdf_model_add_statement(param->RDF_model, statement);
//FOR SUBSCRIBE
statement_in_tl(&(param->RDF_list_insert),statement);
//librdf_model_add_statement(param->RDF_model_insert, statement);
librdf_free_statement(statement);
//////////////////////////////////////////////
if (enable_real_reasoning)
{
add_sub_type(param, t->subject,t->object);
}
///////////////////////////////////////////////
}
//Insert subject and object as property
else if(strcmp(t->predicate,rdfs_ex "subPropertyOf")==0)
{
statement=librdf_new_statement(param->RDF_world);
librdf_statement_set_subject(statement,librdf_new_node_from_uri_string(param->RDF_world, t->subject));
librdf_statement_set_predicate(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdf_ex "type"));
librdf_statement_set_object(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdf_ex "Property"));
librdf_model_add_statement(param->RDF_model, statement);
//FOR SUBSCRIBE
statement_in_tl(&(param->RDF_list_insert),statement);
//librdf_model_add_statement(param->RDF_model_insert, statement);
librdf_free_statement(statement);
statement=librdf_new_statement(param->RDF_world);
librdf_statement_set_subject(statement,librdf_new_node_from_uri_string(param->RDF_world, t->object));
librdf_statement_set_predicate(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdf_ex "type"));
librdf_statement_set_object(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdf_ex "Property"));
librdf_model_add_statement(param->RDF_model, statement);
//FOR SUBSCRIBE
statement_in_tl(&(param->RDF_list_insert),statement);
//librdf_model_add_statement(param->RDF_model_insert, statement);
librdf_free_statement(statement);
////////////////////////////////
if (enable_real_reasoning)
{
add_sub_properties(param, t->subject, t->object);
}
////////////////////////////////
}
//Insert subject and object as property and class(domain and range)
else if(strcmp(t->predicate,rdfs_ex "domain")==0 )
{
statement=librdf_new_statement(param->RDF_world);
librdf_statement_set_subject(statement,librdf_new_node_from_uri_string(param->RDF_world, t->subject));
librdf_statement_set_predicate(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdf_ex "type"));
librdf_statement_set_object(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdf_ex "Property"));
librdf_model_add_statement(param->RDF_model, statement);
//FOR SUBSCRIBE
statement_in_tl(&(param->RDF_list_insert),statement);
//librdf_model_add_statement(param->RDF_model_insert, statement);
librdf_free_statement(statement);
statement=librdf_new_statement(param->RDF_world);
librdf_statement_set_subject(statement,librdf_new_node_from_uri_string(param->RDF_world, t->object));
librdf_statement_set_predicate(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdf_ex "type"));
librdf_statement_set_object(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdfs_ex "Class"));
librdf_model_add_statement(param->RDF_model, statement);
//FOR SUBSCRIBE
statement_in_tl(&(param->RDF_list_insert),statement);
//librdf_model_add_statement(param->RDF_model_insert, statement);
librdf_free_statement(statement);
//////////////////////////////////////////////////////////////////////////////////////
if (enable_real_reasoning)
{
add_properties_domain(param, t->subject, t->object);
}
//////////////////////////////////////////////////////////////////////////////////////
}
else if(strcmp(t->predicate,rdfs_ex "range")==0)
{
statement=librdf_new_statement(param->RDF_world);
librdf_statement_set_subject(statement,librdf_new_node_from_uri_string(param->RDF_world, t->subject));
librdf_statement_set_predicate(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdf_ex "type"));
librdf_statement_set_object(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdf_ex "Property"));
librdf_model_add_statement(param->RDF_model, statement);
//FOR SUBSCRIBE
statement_in_tl(&(param->RDF_list_insert),statement);
//librdf_model_add_statement(param->RDF_model_insert, statement);
librdf_free_statement(statement);
statement=librdf_new_statement(param->RDF_world);
librdf_statement_set_subject(statement,librdf_new_node_from_uri_string(param->RDF_world, t->object));
librdf_statement_set_predicate(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdf_ex "type"));
librdf_statement_set_object(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdfs_ex "Class"));
librdf_model_add_statement(param->RDF_model, statement);
//FOR SUBSCRIBE
statement_in_tl(&(param->RDF_list_insert),statement);
//librdf_model_add_statement(param->RDF_model_insert, statement);
librdf_free_statement(statement);
//////////////////////////////////////////////////////////////////////////////////////
if (enable_real_reasoning)
{
add_properties_range(param, t->subject, t->object);
}
//////////////////////////////////////////////////////////////////////////////////////
}
// All other cases!
// Insert predicate as property (eventually check for subproperties)
else if(strcmp(t->predicate,rdf_ex "type")!=0)
{
statement=librdf_new_statement(param->RDF_world);
librdf_statement_set_subject(statement,
librdf_new_node_from_uri_string(param->RDF_world, t->predicate));
librdf_statement_set_predicate(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdf_ex "type"));
librdf_statement_set_object(statement,
librdf_new_node_from_uri_string(param->RDF_world, rdf_ex "Property"));
librdf_model_add_statement(param->RDF_model, statement);
//FOR SUBSCRIBE
statement_in_tl(&(param->RDF_list_insert),statement);
//librdf_model_add_statement(param->RDF_model_insert, statement);
librdf_free_statement(statement);
//////////////////////////////////////////////
if (enable_real_reasoning)
{
check_if_predicate_subproperty_and_add(param,t->subject,t->predicate,t->object);
check_if_property_in_domain_and_add_subject_type(param, t->subject, t->predicate);
check_if_property_in_range_and_add_object_type(param, t->object, t->predicate);
}
//////////////////////////////////////////////
}
}
int
main(int argc, char *argv[])
{
const char *program=librdf_basename((const char*)argv[0]);
const char *test_serializer_types[]={"rdfxml", "ntriples", NULL};
int i;
const char *type;
unsigned char *string;
size_t string_length;
librdf_world *world;
librdf_storage *storage;
librdf_model* model;
librdf_uri* base_uri;
librdf_statement* statement;
librdf_serializer* serializer;
librdf_parser* parser;
librdf_stream* stream;
FILE *fh;
struct stat st_buf;
world=librdf_new_world();
librdf_world_open(world);
librdf_world_set_logger(world, &LogData, log_handler);
for(i=0; (type=test_serializer_types[i]); i++) {
fprintf(stderr, "%s: Trying to create new %s serializer\n", program, type);
serializer=librdf_new_serializer(world, type, NULL, NULL);
if(!serializer) {
fprintf(stderr, "%s: Failed to create new serializer type %s\n", program, type);
continue;
}
fprintf(stderr, "%s: Freeing serializer\n", program);
librdf_free_serializer(serializer);
}
storage=librdf_new_storage(world, NULL, NULL, NULL);
model=librdf_new_model(world, storage, NULL);
/* ERROR: Subject URI is bad UTF-8 */
statement=librdf_new_statement_from_nodes(world,
librdf_new_node_from_uri_string(world, (const unsigned char*)"http://example.org/foo\xfc"),
librdf_new_node_from_uri_string(world, (const unsigned char*)"http://example.org/bar"),
librdf_new_node_from_literal(world, (const unsigned char*)"blah", NULL, 0));
librdf_model_add_statement(model, statement);
librdf_free_statement(statement);
/* ERROR: Predicate URI is not serializable */
statement=librdf_new_statement_from_nodes(world,
librdf_new_node_from_uri_string(world, (const unsigned char*)"http://example.org/foo"),
librdf_new_node_from_uri_string(world, (const unsigned char*)"http://bad.example.org/"),
librdf_new_node_from_literal(world, (const unsigned char*)"blah", NULL, 0));
librdf_model_add_statement(model, statement);
librdf_free_statement(statement);
/* ERROR: Object literal is bad UTF-8 */
statement=librdf_new_statement_from_nodes(world,
librdf_new_node_from_uri_string(world, (const unsigned char*)"http://example.org/foo"),
librdf_new_node_from_uri_string(world, (const unsigned char*)"http://example.org/abc"),
librdf_new_node_from_literal(world, (const unsigned char*)"\xfc", NULL, 0));
librdf_model_add_statement(model, statement);
librdf_free_statement(statement);
serializer=librdf_new_serializer(world, "rdfxml", NULL, NULL);
base_uri=librdf_new_uri(world, (const unsigned char*)"http://example.org/base#");
string=librdf_serializer_serialize_model_to_counted_string(serializer,
base_uri, model,
&string_length);
#define EXPECTED_BAD_STRING_LENGTH 382
if(string_length != EXPECTED_BAD_STRING_LENGTH) {
fprintf(stderr, "%s: Serialising model to RDF/XML returned string '%s' size %d, expected %d\n", program, string,
(int)string_length, EXPECTED_BAD_STRING_LENGTH);
return 1;
}
if(string)
free(string);
librdf_free_uri(base_uri); base_uri=NULL;
librdf_free_model(model); model=NULL;
librdf_free_storage(storage); storage=NULL;
if(LogData.errors != EXPECTED_ERRORS) {
fprintf(stderr, "%s: Serialising to RDF/XML returned %d errors, expected %d\n", program,
LogData.errors, EXPECTED_ERRORS);
return 1;
}
if(LogData.warnings != EXPECTED_WARNINGS) {
fprintf(stderr, "%s: Serialising to RDF/XML returned %d warnings, expected %d\n", program,
LogData.warnings, EXPECTED_WARNINGS);
return 1;
}
/* Good model to serialize */
storage=librdf_new_storage(world, NULL, NULL, NULL);
model=librdf_new_model(world, storage, NULL);
parser=librdf_new_parser(world, SYNTAX_TYPE, NULL, NULL);
if(!parser) {
fprintf(stderr, "%s: Failed to create new parser type %s\n", program,
SYNTAX_TYPE);
return 1;
}
fprintf(stderr, "%s: Adding %s string content\n", program, SYNTAX_TYPE);
if(librdf_parser_parse_string_into_model(parser,
(const unsigned char*)SYNTAX_CONTENT,
NULL /* no base URI*/,
model)) {
fprintf(stderr, "%s: Failed to parse RDF from %s string into model\n",
SYNTAX_TYPE, program);
return 1;
}
librdf_free_parser(parser);
fprintf(stderr, "%s: Serializing stream to a string\n", program);
stream=librdf_model_as_stream(model);
string_length=0;
string=librdf_serializer_serialize_stream_to_counted_string(serializer,
NULL, stream,
&string_length);
#define EXPECTED_GOOD_STRING_LENGTH 668
if(string_length != EXPECTED_GOOD_STRING_LENGTH) {
fprintf(stderr, "%s: Serialising stream to RDF/XML returned string '%s' size %d, expected %d\n", program, string,
(int)string_length, EXPECTED_GOOD_STRING_LENGTH);
return 1;
}
librdf_free_stream(stream);
if(string)
free(string);
fprintf(stderr, "%s: Serializing stream to a file handle\n", program);
stream=librdf_model_as_stream(model);
#define FILENAME "test.rdf"
fh=fopen(FILENAME, "w");
if(!fh) {
fprintf(stderr, "%s: Failed to fopen for writing '%s' - %s\n",
program, FILENAME, strerror(errno));
return 1;
}
librdf_serializer_serialize_stream_to_file_handle(serializer, fh, NULL,
stream);
fclose(fh);
stat(FILENAME, &st_buf);
if((int)st_buf.st_size != EXPECTED_GOOD_STRING_LENGTH) {
fprintf(stderr, "%s: Serialising stream to file handle returned file '%s' of size %d bytes, expected %d\n", program, FILENAME, (int)st_buf.st_size,
EXPECTED_GOOD_STRING_LENGTH);
return 1;
}
unlink(FILENAME);
librdf_free_stream(stream);
librdf_free_serializer(serializer); serializer=NULL;
librdf_free_model(model); model=NULL;
librdf_free_storage(storage); storage=NULL;
librdf_free_world(world);
/* keep gcc -Wall happy */
return(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
}
int
main(int argc, char *argv[])
{
librdf_statement *statement;
librdf_stream* stream;
const char *program=librdf_basename((const char*)argv[0]);
librdf_world *world;
librdf_uri* prefix_uri;
librdf_node* nodes[STREAM_NODES_COUNT];
int i;
librdf_iterator* iterator;
int count;
world=librdf_new_world();
librdf_world_open(world);
prefix_uri=librdf_new_uri(world, (const unsigned char*)NODE_URI_PREFIX);
if(!prefix_uri) {
fprintf(stderr, "%s: Failed to create prefix URI\n", program);
return(1);
}
for(i=0; i < STREAM_NODES_COUNT; i++) {
unsigned char buf[2];
buf[0]='a'+i;
buf[1]='\0';
nodes[i]=librdf_new_node_from_uri_local_name(world, prefix_uri, buf);
if(!nodes[i]) {
fprintf(stderr, "%s: Failed to create node %i (%s)\n", program, i, buf);
return(1);
}
}
fprintf(stdout, "%s: Creating static node iterator\n", program);
iterator = librdf_node_new_static_node_iterator(world, nodes, STREAM_NODES_COUNT);
if(!iterator) {
fprintf(stderr, "%s: Failed to create static node iterator\n", program);
return(1);
}
statement=librdf_new_statement_from_nodes(world,
librdf_new_node_from_uri_string(world, (const unsigned char*)"http://example.org/resource"),
librdf_new_node_from_uri_string(world, (const unsigned char*)"http://example.org/property"),
NULL);
if(!statement) {
fprintf(stderr, "%s: Failed to create statement\n", program);
return(1);
}
fprintf(stdout, "%s: Creating stream from node iterator\n", program);
stream=librdf_new_stream_from_node_iterator(iterator, statement, LIBRDF_STATEMENT_OBJECT);
if(!stream) {
fprintf(stderr, "%s: Failed to createstatic node stream\n", program);
return(1);
}
/* This is to check that the stream_from_node_iterator code
* *really* takes a copy of what it needs from statement
*/
fprintf(stdout, "%s: Freeing statement\n", program);
librdf_free_statement(statement);
fprintf(stdout, "%s: Listing static node stream\n", program);
count=0;
while(!librdf_stream_end(stream)) {
librdf_statement* s_statement=librdf_stream_get_object(stream);
if(!s_statement) {
fprintf(stderr, "%s: librdf_stream_current returned NULL when not end of stream\n", program);
return(1);
}
fprintf(stdout, "%s: statement %d is: ", program, count);
librdf_statement_print(s_statement, stdout);
fputc('\n', stdout);
librdf_stream_next(stream);
count++;
}
if(count != STREAM_NODES_COUNT) {
fprintf(stderr, "%s: Stream returned %d statements, expected %d\n", program,
count, STREAM_NODES_COUNT);
return(1);
}
fprintf(stdout, "%s: stream from node iterator worked ok\n", program);
fprintf(stdout, "%s: Freeing stream\n", program);
librdf_free_stream(stream);
fprintf(stdout, "%s: Freeing nodes\n", program);
for (i=0; i<STREAM_NODES_COUNT; i++) {
librdf_free_node(nodes[i]);
}
librdf_free_uri(prefix_uri);
librdf_free_world(world);
/* keep gcc -Wall happy */
return(0);
}
static int
librdf_query_rasqal_query_results_update_statement(void* context)
{
librdf_query_rasqal_stream_context* scontext=(librdf_query_rasqal_stream_context*)context;
librdf_world* world=scontext->query->world;
librdf_node* node;
raptor_statement *rstatement=rasqal_query_results_get_triple(scontext->qcontext->results);
if(!rstatement)
return 1;
scontext->statement=librdf_new_statement(world);
if(!scontext->statement)
return 1;
/* subject */
if(rstatement->subject->type == RAPTOR_TERM_TYPE_BLANK) {
node = librdf_new_node_from_blank_identifier(world, rstatement->subject->value.blank.string);
} else if(rstatement->subject->type == RAPTOR_TERM_TYPE_URI) {
node = librdf_new_node_from_uri_string(world,
librdf_uri_as_string((librdf_uri*)rstatement->subject->value.uri));
} else {
librdf_log(world,
0, LIBRDF_LOG_ERROR, LIBRDF_FROM_QUERY, NULL,
"Unknown Raptor subject identifier type %d",
rstatement->subject->type);
goto fail;
}
if(!node) {
librdf_log(world,
0, LIBRDF_LOG_ERROR, LIBRDF_FROM_QUERY, NULL,
"Could not create subject node");
goto fail;
}
librdf_statement_set_subject(scontext->statement, node);
/* predicate */
if(rstatement->predicate->type == RAPTOR_TERM_TYPE_URI) {
node = librdf_new_node_from_uri_string(world,
librdf_uri_as_string((librdf_uri*)rstatement->predicate->value.uri));
} else {
librdf_log(world,
0, LIBRDF_LOG_ERROR, LIBRDF_FROM_QUERY, NULL,
"Unknown Raptor predicate identifier type %d",
rstatement->predicate->type);
goto fail;
}
if(!node) {
librdf_log(world,
0, LIBRDF_LOG_ERROR, LIBRDF_FROM_QUERY, NULL,
"Could not create predicate node");
goto fail;
}
librdf_statement_set_predicate(scontext->statement, node);
/* object */
if(rstatement->object->type == RAPTOR_TERM_TYPE_LITERAL) {
node = librdf_new_node_from_typed_literal(world,
rstatement->object->value.literal.string,
(const char*)rstatement->object->value.literal.language,
(librdf_uri*)rstatement->object->value.literal.datatype);
} else if(rstatement->object->type == RAPTOR_TERM_TYPE_BLANK) {
node = librdf_new_node_from_blank_identifier(world, rstatement->object->value.blank.string);
} else if(rstatement->object->type == RAPTOR_TERM_TYPE_URI) {
node = librdf_new_node_from_uri_string(world,
librdf_uri_as_string((librdf_uri*)rstatement->object->value.uri));
} else {
librdf_log(world,
0, LIBRDF_LOG_ERROR, LIBRDF_FROM_PARSER, NULL,
"Unknown Raptor object identifier type %d",
rstatement->object->type);
goto fail;
}
if(!node) {
librdf_log(world,
0, LIBRDF_LOG_ERROR, LIBRDF_FROM_QUERY, NULL,
"Could not create object node");
goto fail;
}
librdf_statement_set_object(scontext->statement, node);
return 0; /* success */
fail:
librdf_free_statement(scontext->statement);
scontext->statement=NULL;
return 1;
}
static librdf_stream*
librdf_storage_trees_serialise_range(librdf_storage* storage, librdf_statement* range)
{
librdf_storage_trees_instance* context=(librdf_storage_trees_instance*)storage->instance;
librdf_storage_trees_serialise_stream_context* scontext;
librdf_stream* stream;
int filter = 0;
scontext=(librdf_storage_trees_serialise_stream_context*)LIBRDF_CALLOC(librdf_storage_trees_serialise_stream_context, 1, sizeof(librdf_storage_trees_serialise_stream_context));
if(!scontext)
return NULL;
scontext->iterator = NULL;
/* ?s ?p ?o */
if (!range || (!range->subject && !range->predicate && !range->object)) {
scontext->iterator=librdf_avltree_get_iterator_start(storage->world, context->graph->spo_tree,
NULL, NULL);
if (range) {
librdf_free_statement(range);
range=NULL;
}
/* s ?p o */
} else if (range->subject && !range->predicate && range->object) {
if (context->index_sop)
scontext->iterator=librdf_avltree_get_iterator_start(storage->world, context->graph->sop_tree,
range, librdf_storage_trees_avl_free);
else
filter=1;
/* s _ _ */
} else if (range->subject) {
scontext->iterator=librdf_avltree_get_iterator_start(storage->world, context->graph->spo_tree,
range, librdf_storage_trees_avl_free);
/* ?s _ o */
} else if (range->object) {
if (context->index_ops)
scontext->iterator=librdf_avltree_get_iterator_start(storage->world, context->graph->ops_tree,
range, librdf_storage_trees_avl_free);
else
filter=1;
/* ?s p ?o */
} else { /* range->predicate != NULL */
if (context->index_pso)
scontext->iterator=librdf_avltree_get_iterator_start(storage->world, context->graph->pso_tree,
range, librdf_storage_trees_avl_free);
else
filter=1;
}
/* If filter is set, we're missing the required index.
* Iterate over the entire model and filter the stream.
* (With a fully indexed store, this will never happen) */
if (filter) {
scontext->iterator=librdf_avltree_get_iterator_start(storage->world, context->graph->spo_tree,
range, librdf_storage_trees_avl_free);
}
#ifdef RDF_STORAGE_TREES_WITH_CONTEXTS
scontext->context_node=NULL;
#endif
if(!scontext->iterator) {
LIBRDF_FREE(librdf_storage_trees_serialise_stream_context, scontext);
return librdf_new_empty_stream(storage->world);
}
scontext->storage=storage;
librdf_storage_add_reference(scontext->storage);
stream=librdf_new_stream(storage->world,
(void*)scontext,
&librdf_storage_trees_serialise_end_of_stream,
&librdf_storage_trees_serialise_next_statement,
&librdf_storage_trees_serialise_get_statement,
&librdf_storage_trees_serialise_finished);
if(!stream) {
librdf_storage_trees_serialise_finished((void*)scontext);
return NULL;
}
if(filter) {
if(librdf_stream_add_map(stream, &librdf_stream_statement_find_map, NULL, (void*)range)) {
/* error - stream_add_map failed */
librdf_free_stream(stream);
stream=NULL;
}
}
return stream;
}
static void
librdf_storage_trees_avl_free(void* data)
{
librdf_statement* stmnt=(librdf_statement*)data;
librdf_free_statement(stmnt);
}