/*
* call-seq:
* graph.dup -> graph
*
* Duplicate the receiver and return the copy.
*
*/
static VALUE
rleaf_redleaf_graph_dup( VALUE self ) {
rleaf_GRAPH *ptr = rleaf_get_graph( self );
VALUE dup = rleaf_redleaf_graph_s_allocate( CLASS_OF(self) );
rleaf_GRAPH *dup_ptr = ALLOC( rleaf_GRAPH );
librdf_stream *statements = librdf_model_as_stream( ptr->model );
rleaf_log_with_context( self, "debug", "Duping %s 0x%x", rb_obj_classname(self), self );
dup_ptr->store = ptr->store;
dup_ptr->model = librdf_new_model_from_model( ptr->model );
if ( ! dup_ptr->model ) {
librdf_free_stream( statements );
xfree( dup_ptr );
rb_raise( rleaf_eRedleafError, "couldn't create new model from model <%p>", ptr->model );
}
if ( (librdf_model_add_statements(dup_ptr->model, statements)) != 0 ) {
librdf_free_stream( statements );
librdf_free_model( dup_ptr->model );
xfree( dup_ptr );
rb_raise( rleaf_eRedleafError, "couldn't add statements from the original model" );
}
DATA_PTR( dup ) = dup_ptr;
OBJ_INFECT( dup, self );
return dup;
}
/**
* librdf_storage_context_remove_statements - Remove statements from a storage with the given context
* @storage: &librdf_storage object
* @context: &librdf_uri context
*
* If @context is NULL, this is equivalent to librdf_storage_remove_statements
*
* Return value: Non 0 on failure
**/
int
librdf_storage_context_remove_statements(librdf_storage* storage,
librdf_node* context)
{
librdf_stream *stream;
LIBRDF_ASSERT_OBJECT_POINTER_RETURN_VALUE(storage, librdf_storage, 1);
if(storage->factory->context_remove_statements)
return storage->factory->context_remove_statements(storage, context);
if(!storage->factory->context_remove_statement)
return 1;
stream=librdf_storage_context_as_stream(storage, context);
if(!stream)
return 1;
while(!librdf_stream_end(stream)) {
librdf_statement *statement=librdf_stream_get_object(stream);
if(!statement)
break;
librdf_storage_context_remove_statement(storage, context, statement);
librdf_stream_next(stream);
}
librdf_free_stream(stream);
return 0;
}
/*
* 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;
}
redhttp_response_t *handle_description_get(redhttp_request_t * request, void *user_data)
{
const raptor_syntax_description* desc = NULL;
redhttp_response_t *response = NULL;
librdf_storage *sd_storage = NULL;
librdf_model *sd_model = NULL;
librdf_stream *sd_stream = NULL;
desc = redstore_negotiate_format(request, librdf_serializer_get_description, "text/html", NULL);
if (desc == NULL || strcmp("html", desc->names[0])==0) {
response = handle_html_description(request, user_data);
} else {
const char *request_url = redhttp_request_get_url(request);
sd_storage = librdf_new_storage(world, NULL, NULL, NULL);
if (!sd_storage) {
redstore_error("Failed to create temporary storage for service description.");
goto CLEANUP;
}
sd_model = create_service_description(sd_storage, request_url);
if (!sd_model) {
redstore_error("Failed to create model for service description.");
goto CLEANUP;
}
sd_stream = librdf_model_as_stream(sd_model);
if (!sd_stream) {
redstore_error("Failed to create stream for service description.");
goto CLEANUP;
}
response = format_graph_stream(request, sd_stream);
if (!response) {
redstore_error("Failed to create temporary storage for service description.");
goto CLEANUP;
}
}
CLEANUP:
if (sd_stream)
librdf_free_stream(sd_stream);
if (sd_model)
librdf_free_model(sd_model);
if (sd_storage)
librdf_free_storage(sd_storage);
return response;
}
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);
}
}
/*
* 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 int
librdf_serializer_raptor_serialize_model(void *context,
FILE *handle, librdf_uri* base_uri,
librdf_model *model)
{
/* librdf_serializer_raptor_context* pcontext=(librdf_serializer_raptor_context*)context; */
librdf_stream *stream=librdf_model_as_stream(model);
if(!stream)
return 1;
while(!librdf_stream_end(stream)) {
librdf_statement *statement=librdf_stream_get_object(stream);
librdf_serializer_print_statement_as_ntriple(statement, handle);
fputc('\n', handle);
librdf_stream_next(stream);
}
librdf_free_stream(stream);
return 0;
}
/*
* 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;
}
/**
* @brief Executes the given query and returns the result in the given format.
*
*
* @param query The query to execute.
* @param format The format of the result.
*
* @return The results.
*/
unsigned char* RDF_ExecQuery(unsigned char* query, unsigned char* format)
{
librdf_query* rdfquery;
librdf_query_results* results;
rdfquery = librdf_new_query(world, "sparql", NULL, query, NULL);
results = librdf_model_query_execute(model, rdfquery);
librdf_serializer* serializer;
librdf_stream* stream;
serializer = librdf_new_serializer(world, format, NULL, NULL);
if(!serializer)
{
fprintf(stderr,
"Failed to create triples serializer for format '%s'\n",
format);
return NULL;
}
stream = librdf_query_results_as_stream(results);
unsigned char* result = librdf_serializer_serialize_stream_to_string(serializer,
NULL, stream);
if(!result)
{
fprintf(stderr, "Failed to turn query results to format '%s'\n",
format);
return NULL;
}
librdf_free_query(rdfquery);
librdf_free_query_results(results);
librdf_free_serializer(serializer);
librdf_free_stream(stream);
return result;
}
/*
* call-seq:
* graph.each_statement {|statement| block } -> graph
* graph.each {|statement| block } -> graph
*
* Call +block+ once for each statement in the graph.
*
*/
static VALUE
rleaf_redleaf_graph_each_statement( VALUE self ) {
rleaf_GRAPH *ptr = rleaf_get_graph( self );
librdf_stream *stream;
librdf_statement *stmt;
stream = librdf_model_as_stream( ptr->model );
if ( !stream )
rb_raise( rleaf_eRedleafError, "Failed to create stream for graph" );
while ( ! librdf_stream_end(stream) ) {
stmt = librdf_stream_get_object( stream );
if ( !stmt ) break;
rb_yield( rleaf_librdf_statement_to_value(stmt) );
librdf_stream_next( stream );
}
librdf_free_stream( stream );
return self;
}
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);
}
/*
* 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;
}
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);
}
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[])
{
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);
}
void run_query(librdf_world* world, librdf_model* model, const std::string& q)
{
librdf_stream* strm;
std::cout << "** Query: " << q << std::endl;
librdf_uri* uri1 =
librdf_new_uri(world, (const unsigned char*) "http://bunchy.org");
if (uri1 == 0)
throw std::runtime_error("Couldn't parse URI");
librdf_uri* uri2 =
librdf_new_uri(world, (const unsigned char*) "http://bunchy.org");
if (uri2 == 0)
throw std::runtime_error("Couldn't parse URI");
librdf_query* qry =
librdf_new_query(world, "sparql", uri1,
(const unsigned char*) q.c_str(),
uri2);
librdf_free_uri(uri1);
librdf_free_uri(uri2);
if (qry == 0)
throw std::runtime_error("Couldn't parse query.");
librdf_query_results* results = librdf_query_execute(qry, model);
if (results == 0)
throw std::runtime_error("Couldn't execute query");
librdf_free_query(qry);
strm = librdf_query_results_as_stream(results);
if (strm == 0)
throw std::runtime_error("Couldn't stream results");
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_serializer(srl);
librdf_free_stream(strm);
librdf_free_query_results(results);
}
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;
}
}
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;
}
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;
}
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);
}
int
main(int argc, char *argv[])
{
librdf_world* world;
librdf_storage *storage, *new_storage;
librdf_model *model, *new_model;
librdf_stream *stream;
char *program=argv[0];
char *name;
char *new_name;
int count;
if(argc < 2 || argc >3) {
fprintf(stderr, "USAGE: %s: <Redland BDB name> [new DB name]\n", program);
return(1);
}
name=argv[1];
if(argc < 3) {
new_name=librdf_heuristic_gen_name(name);
if(!new_name) {
fprintf(stderr, "%s: Failed to create new name from '%s'\n", program,
name);
return(1);
}
} else {
new_name=argv[2];
}
fprintf(stderr, "%s: Upgrading DB '%s' to '%s'\n", program, name, new_name);
world=librdf_new_world();
librdf_world_open(world);
storage=librdf_new_storage(world, "hashes", name,
"hash-type='bdb',dir='.',write='no',new='no'");
if(!storage) {
fprintf(stderr, "%s: Failed to open old storage '%s'\n", program, name);
return(1);
}
new_storage=librdf_new_storage(world, "hashes", new_name,
"hash-type='bdb',dir='.',write='yes',new='yes'");
if(!storage) {
fprintf(stderr, "%s: Failed to create new storage '%s'\n", program, new_name);
return(1);
}
model=librdf_new_model(world, storage, NULL);
if(!model) {
fprintf(stderr, "%s: Failed to create model for '%s'\n", program, name);
return(1);
}
new_model=librdf_new_model(world, new_storage, NULL);
if(!new_model) {
fprintf(stderr, "%s: Failed to create new model for '%s'\n", program, new_name);
return(1);
}
stream=librdf_model_as_stream(model);
if(!stream) {
fprintf(stderr, "%s: librdf_model_as_stream returned NULL stream\n",
program);
return(1);
} else {
count=0;
while(!librdf_stream_end(stream)) {
librdf_statement *statement=librdf_stream_get_object(stream);
if(!statement) {
fprintf(stderr, "%s: librdf_stream_next returned NULL\n", program);
break;
}
librdf_model_add_statement(new_model, statement);
librdf_stream_next(stream);
count++;
}
librdf_free_stream(stream);
}
librdf_free_model(model);
librdf_free_model(new_model);
librdf_free_storage(storage);
librdf_free_storage(new_storage);
librdf_free_world(world);
if(argc < 3)
free(new_name);
#ifdef LIBRDF_MEMORY_DEBUG
librdf_memory_report(stderr);
#endif
/* keep gcc -Wall happy */
return(0);
}
