/*
* call-seq:
* graph.predicates_entailing( object ) -> nodes
*
* Returns an Array of predicates (URI objects) that point to the specified +object+.
*
*/
static VALUE
rleaf_redleaf_graph_predicates_entailing( VALUE self, VALUE object ) {
rleaf_GRAPH *ptr = rleaf_get_graph( self );
librdf_node *target;
librdf_iterator *iter;
VALUE rval = rb_ary_new();
target = rleaf_value_to_subject_node( object );
iter = librdf_model_get_arcs_in( ptr->model, target );
if ( !iter ) {
librdf_free_node( target );
rb_raise( rleaf_eRedleafError, "could not get arcs in for %s",
RSTRING_PTR(rb_inspect(object)) );
}
while ( ! librdf_iterator_end(iter) ) {
librdf_node *arc = librdf_iterator_get_object( iter );
VALUE predicate;
if ( !arc ) {
librdf_free_iterator( iter );
rb_raise( rleaf_eRedleafError, "iterator returned NULL arc" );
}
predicate = rleaf_librdf_node_to_value( arc );
rb_ary_push( rval, predicate );
librdf_iterator_next( iter );
}
librdf_free_iterator( iter );
return rval;
}
static void
print_nodes(FILE* fh, librdf_iterator* iterator)
{
int count;
librdf_node* context_node;
librdf_node* node;
/* (Common code) Print out nodes */
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) {
fprintf(stderr, ": librdf_iterator_get_object returned NULL\n");
break;
}
fputs("Matched node: ", fh);
librdf_node_print(node, fh);
if(context_node) {
fputs(" with context ", fh);
librdf_node_print(context_node, fh);
}
fputc('\n', fh);
count++;
librdf_iterator_next(iterator);
}
librdf_free_iterator(iterator);
fprintf(stderr, ": matching nodes: %d\n", count);
}
/*
* call-seq:
* graph.subjects( predicate, object ) -> [ nodes ]
*
* Return an Array of subject nodes from the graph that have the specified +predicate+ and +object+.
*
*/
static VALUE
rleaf_redleaf_graph_subjects( VALUE self, VALUE predicate, VALUE object ) {
rleaf_GRAPH *ptr = rleaf_get_graph( self );
librdf_node *arc, *target;
librdf_iterator *iter;
VALUE rval = rb_ary_new();
arc = rleaf_value_to_predicate_node( predicate );
target = rleaf_value_to_object_node( object );
iter = librdf_model_get_sources( ptr->model, arc, target );
if ( !iter ) {
librdf_free_node( arc );
librdf_free_node( target );
rb_raise( rleaf_eRedleafError, "failed to get sources for {? -%s-> %s}",
RSTRING_PTR(rb_inspect(predicate)),
RSTRING_PTR(rb_inspect(object)) );
}
while ( ! librdf_iterator_end(iter) ) {
librdf_node *source = librdf_iterator_get_object( iter );
VALUE subject = rleaf_librdf_node_to_value( source );
rb_ary_push( rval, subject );
librdf_iterator_next( iter );
}
librdf_free_iterator( iter );
return rval;
}
/*
* call-seq:
* graph.contexts -> array
*
* Returns an Array of URIs describing the contexts in the receiving graph.
*
*/
static VALUE
rleaf_redleaf_graph_contexts( VALUE self ) {
rleaf_GRAPH *ptr = rleaf_get_graph( self );
librdf_iterator *iter;
librdf_node *context_node;
VALUE context = Qnil;
VALUE rval = rb_ary_new();
int count = 0;
if ( (iter = librdf_model_get_contexts(ptr->model)) == NULL ) {
rleaf_log_with_context( self, "info", "couldn't fetch a context iterator; "
"contexts not supported?" );
return rval;
}
rleaf_log_with_context( self, "debug", "iterating over contexts for graph 0x%x", self );
while ( ! librdf_iterator_end(iter) ) {
context_node = librdf_iterator_get_context( iter );
context = rleaf_librdf_uri_node_to_object( context_node );
rleaf_log_with_context( self, "debug", " context %d: %s",
count, RSTRING_PTR(rb_inspect(context)) );
rb_ary_push( rval, context );
librdf_iterator_next( iter );
}
librdf_free_iterator( iter );
return rval;
}
/*
* call-seq:
* graph.include_object?( object ) -> true or false
*
* Returns +true+ if the graph contains any statements with the specified +object+.
*
*/
static VALUE
rleaf_redleaf_graph_include_object_p( VALUE self, VALUE object ) {
rleaf_GRAPH *ptr = rleaf_get_graph( self );
librdf_node *target;
librdf_iterator *iter;
VALUE rval = Qfalse;
rleaf_log_with_context( self, "debug", "Checking for statements with %s as the object",
RSTRING_PTR(rb_inspect( object )) );
target = rleaf_value_to_object_node( object );
iter = librdf_model_get_arcs_in( ptr->model, target );
if ( !iter ) {
librdf_free_node( target );
rb_raise( rleaf_eRedleafError, "could not get arcs out for %s",
RSTRING_PTR(rb_inspect(object)) );
}
/* If it's not empty, there was at least one matching statement. */
if ( ! librdf_iterator_end(iter) ) rval = Qtrue;
librdf_free_iterator( iter );
librdf_free_node( target );
return rval;
}
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);
}
/*
* librdf_stream_update_current_statement - helper function to get the next element with map applied
* @stream: #librdf_stream object
*
* A helper function that gets the next element subject to the user
* defined map function, if set by librdf_stream_add_map(),
*
* Return value: the next statement or NULL at end of stream
*/
static librdf_statement*
librdf_stream_update_current_statement(librdf_stream* stream)
{
librdf_statement* statement=NULL;
if(stream->is_updated)
return stream->current;
stream->is_updating=1;
/* find next statement subject to map */
while(!stream->is_end_method(stream->context)) {
librdf_iterator* map_iterator; /* Iterator over stream->map_list librdf_list */
statement=(librdf_statement*)stream->get_method(stream->context,
LIBRDF_STREAM_GET_METHOD_GET_OBJECT);
if(!statement)
break;
if(!stream->map_list || !librdf_list_size(stream->map_list))
break;
map_iterator=librdf_list_get_iterator(stream->map_list);
if(!map_iterator) {
statement=NULL;
break;
}
while(!librdf_iterator_end(map_iterator)) {
librdf_stream_map *map=(librdf_stream_map*)librdf_iterator_get_object(map_iterator);
if(!map)
break;
/* apply the map to the element */
statement=map->fn(stream, map->context, statement);
if(!statement)
break;
librdf_iterator_next(map_iterator);
}
librdf_free_iterator(map_iterator);
/* found something, return it */
if(statement)
break;
stream->next_method(stream->context);
}
stream->current=statement;
if(!stream->current)
stream->is_finished=1;
stream->is_updated=1;
stream->is_updating=0;
return statement;
}
/*
* librdf_iterator_update_current_element - Update the current iterator element with filtering
* @iterator: the #librdf_iterator object
*
* Helper function to set the iterator->current to the current
* element as filtered optionally by a user defined
* map function as set by librdf_iterator_add_map()
*
* Return value: the next element or NULL if the iterator has ended
*/
static void*
librdf_iterator_update_current_element(librdf_iterator* iterator)
{
void *element=NULL;
if(iterator->is_updated)
return iterator->current;
iterator->is_updating=1;
/* find next element subject to map */
while(!iterator->is_end_method(iterator->context)) {
librdf_iterator* map_iterator; /* Iterator over iterator->map_list librdf_list */
element=iterator->get_method(iterator->context,
LIBRDF_ITERATOR_GET_METHOD_GET_OBJECT);
if(!element)
break;
if(!iterator->map_list || !librdf_list_size(iterator->map_list))
break;
map_iterator=librdf_list_get_iterator(iterator->map_list);
if(!map_iterator)
break;
while(!librdf_iterator_end(map_iterator)) {
librdf_iterator_map *map=(librdf_iterator_map*)librdf_iterator_get_object(map_iterator);
if(!map)
break;
/* apply the map to the element */
element=map->fn(iterator, map->context, element);
if(!element)
break;
librdf_iterator_next(map_iterator);
}
librdf_free_iterator(map_iterator);
/* found something, return it */
if(element)
break;
iterator->next_method(iterator->context);
}
iterator->current=element;
if(!iterator->current)
iterator->is_finished=1;
iterator->is_updated=1;
iterator->is_updating=0;
return element;
}
static void
librdf_storage_trees_serialise_finished(void* context)
{
librdf_storage_trees_serialise_stream_context* scontext=(librdf_storage_trees_serialise_stream_context*)context;
if(scontext->iterator)
librdf_free_iterator(scontext->iterator);
if(scontext->storage)
librdf_storage_remove_reference(scontext->storage);
LIBRDF_FREE(librdf_storage_trees_serialise_stream_context, scontext);
}
/*
* call-seq:
* graph.predicates_about( subject ) -> nodes
*
* Returns an Array of predicates (URI objects) that point from the specified +subject+.
*
*/
static VALUE
rleaf_redleaf_graph_predicates_about( VALUE self, VALUE subject ) {
rleaf_GRAPH *ptr = rleaf_get_graph( self );
librdf_node *source;
librdf_iterator *iter;
VALUE rval = rb_ary_new();
rleaf_log_with_context( self, "debug", "fetching predicates about %s",
RSTRING_PTR(rb_inspect( subject )) );
source = rleaf_value_to_subject_node( subject );
iter = librdf_model_get_arcs_out( ptr->model, source );
if ( !iter ) {
librdf_free_node( source );
rb_raise( rleaf_eRedleafError, "could not get arcs out for %s",
RSTRING_PTR(rb_inspect(subject)) );
}
while ( ! librdf_iterator_end(iter) ) {
librdf_node *arc = librdf_iterator_get_object( iter );
VALUE predicate;
if ( !arc ) {
librdf_free_iterator( iter );
librdf_free_node( source );
rb_raise( rleaf_eRedleafError, "iterator returned NULL arc" );
}
predicate = rleaf_librdf_node_to_value( arc );
rb_ary_push( rval, predicate );
librdf_iterator_next( iter );
}
librdf_free_iterator( iter );
librdf_free_node( source );
return rval;
}
/**
* librdf_hash_bdb_clone - Clone the BerkeleyDB hash
* @hash: new &librdf_hash that this implements
* @context: new BerkeleyDB hash context
* @new_identifier: new identifier for this hash
* @old_context: old BerkeleyDB hash context
*
* Clones the existing Berkeley DB hash into the new one with the
* new identifier.
*
* Return value: non 0 on failure
**/
static int
librdf_hash_bdb_clone(librdf_hash *hash, void* context, char *new_identifier,
void *old_context)
{
librdf_hash_bdb_context* hcontext=(librdf_hash_bdb_context*)context;
librdf_hash_bdb_context* old_hcontext=(librdf_hash_bdb_context*)old_context;
librdf_hash_datum *key, *value;
librdf_iterator *iterator;
int status=0;
/* copy data fields that might change */
hcontext->hash=hash;
/* Note: The options are not used at present, so no need to make a copy
*/
if(librdf_hash_bdb_open(context, new_identifier,
old_hcontext->mode, old_hcontext->is_writable,
old_hcontext->is_new, NULL))
return 1;
/* Use higher level functions to iterator this data
* on the other hand, maybe this is a good idea since that
* code is tested and works
*/
key=librdf_new_hash_datum(hash->world, NULL, 0);
value=librdf_new_hash_datum(hash->world, NULL, 0);
iterator=librdf_hash_get_all(old_hcontext->hash, key, value);
while(!librdf_iterator_end(iterator)) {
librdf_hash_datum* k= (librdf_hash_datum*)librdf_iterator_get_key(iterator);
librdf_hash_datum* v= (librdf_hash_datum*)librdf_iterator_get_value(iterator);
if(librdf_hash_bdb_put(hcontext, k, v)) {
status=1;
break;
}
librdf_iterator_next(iterator);
}
if(iterator)
librdf_free_iterator(iterator);
librdf_free_hash_datum(value);
librdf_free_hash_datum(key);
return status;
}
static int context_count(librdf_storage * storage)
{
librdf_iterator *iterator = NULL;
int count = 0;
assert(storage != NULL);
iterator = librdf_storage_get_contexts(storage);
if (!iterator) {
redstore_error("librdf_storage_get_contexts returned NULL");
return -1;
}
while (!librdf_iterator_end(iterator)) {
count++;
librdf_iterator_next(iterator);
}
librdf_free_iterator(iterator);
return count;
}
/**
* librdf_storage_has_arc_out - check if a node has a given property pointing from it
* @storage: &librdf_storage object
* @node: &librdf_node resource node
* @property: &librdf_node property node
*
* Return value: non 0 if arc property does point from the resource node
**/
int
librdf_storage_has_arc_out(librdf_storage *storage, librdf_node *node,
librdf_node *property)
{
librdf_iterator *iterator;
int status;
LIBRDF_ASSERT_OBJECT_POINTER_RETURN_VALUE(storage, librdf_storage, 0);
LIBRDF_ASSERT_OBJECT_POINTER_RETURN_VALUE(node, librdf_node, 0);
LIBRDF_ASSERT_OBJECT_POINTER_RETURN_VALUE(property, librdf_node, 0);
if (storage->factory->has_arc_out)
return storage->factory->has_arc_out(storage, node, property);
iterator=librdf_storage_get_targets(storage, node, property);
if(!iterator)
return 0;
/* a non-empty list of targets is success */
status=!librdf_iterator_end(iterator);
librdf_free_iterator(iterator);
return status;
}
static int test_string_manipulation(librdf_world *world, librdf_hash *h) {
const char *test_hash_array[]={"shape", "cube",
"sides", "6", /* for testing get as long */
"3d", "yes", /* testing bool */
"colour", "red",
"colour", "yellow",
"creator", "rubik",
NULL};
const unsigned char* template_string=(const unsigned char*)"the shape is %{shape} and the sides are %{sides} created by %{creator}";
const unsigned char* template_expected=(const unsigned char*)"the shape is cube and the sides are 6 created by rubik";
const char * const test_hash_string="field1='value1', field2='\\'value2', field3='\\\\', field4='\\\\\\'', field5 = 'a' ";
const char * filter_string[] = {"field1", NULL};
librdf_iterator* iterator;
librdf_hash_datum *key_hd;
char *string_result;
unsigned char *template_result;
int b;
long l;
/*
*
* Test librdf_hash_from_array_of_strings
*
*/
fprintf(stdout, "Initializing hash from array of strings\n");
if(librdf_hash_from_array_of_strings(h, test_hash_array)) {
fprintf(stderr, "Failed to init hash from array of strings\n");
return(1);
}
fprintf(stdout, "librdf_hash_from_array_of_strings success. total values: %d.", librdf_hash_values_count(h));
fprintf(stdout, "\nresulting hash: ");
librdf_hash_print(h, stdout);
fputc('\n', stdout);
fprintf(stdout, "\nresulting hash keys: ");
librdf_hash_print_keys(h, stdout);
fputc('\n', stdout);
/*
*
* Test librdf_hash_get_as_boolean and librdf_hash_get_as_long
*
*/
key_hd=librdf_new_hash_datum(world, NULL, 0);
iterator=librdf_hash_keys(h, key_hd);
while(!librdf_iterator_end(iterator)) {
librdf_hash_datum *k=(librdf_hash_datum*)librdf_iterator_get_key(iterator);
char *key_string;
key_string = LIBRDF_MALLOC(char*, k->size + 1);
if(!key_string)
break;
strncpy(key_string, (char*)k->data, k->size);
key_string[k->size]='\0';
fprintf(stdout, "boolean value of key '%s' is ", key_string);
b=librdf_hash_get_as_boolean(h, key_string);
fprintf(stdout, "%d (0 F, -1 Bad, else T)\n", b);
fprintf(stdout, "long value of key '%s' is ", key_string);
l=librdf_hash_get_as_long(h, key_string);
fprintf(stdout, "%ld (decimal, -1 Bad)\n", l);
LIBRDF_FREE(char*, key_string);
librdf_iterator_next(iterator);
}
if(iterator)
librdf_free_iterator(iterator);
librdf_free_hash_datum(key_hd);
/*
*
* Test librdf_hash_from_string
*
*/
fprintf(stdout, "Initializing hash from string >>%s<<\n", test_hash_string);
librdf_hash_from_string (h, test_hash_string);
fprintf(stdout, "values count %d\n", librdf_hash_values_count(h));
fprintf(stdout, "resulting: ");
librdf_hash_print(h, stdout);
fputc('\n', stdout);
fprintf(stdout, "Converting hash back to a string");
string_result=librdf_hash_to_string(h, NULL);
/* Order is not guaranteed, so sadly we can't just do a full string comparison */
if(!strstr(string_result, "field1='value1'")) {
fprintf(stdout, "Did not see field1='value1' in the generated string >>%s<<\n",
string_result);
return 0;
} else if(!strstr(string_result, "field2='\\'value2'")) {
fprintf(stdout, "Did not see field2='\\'value2'' in the generated string >>%s<<\n",
string_result);
return 0;
} else if(!strstr(string_result, "field3='\\\\'")) {
fprintf(stdout, "Did not see field3='\\\\' in the generated string >>%s<<\n",
string_result);
return 0;
} else if(!strstr(string_result, "field4='\\\\\\'")) {
fprintf(stdout, "Did not see field4='\\\\\\' in the generated string >>%s<<\n",
string_result);
return 0;
} else if(!strstr(string_result, "field5='a'")) {
fprintf(stdout, "Did not see field5='a' in the generated string >>%s<<\n", string_result);
return 0;
} else {
fprintf(stdout, "\nresulting in >>%s<<\n", string_result);
}
librdf_free_memory(string_result);
fprintf(stdout, "Converting hash back to a string with filter");
string_result=librdf_hash_to_string(h, filter_string);
if(strstr(string_result, "field1")) {
fprintf(stdout, "Was not expecting >>field1<< to be in the generated string >>%s<<\n",
string_result);
return 0;
} else {
fprintf(stdout, "\nresulting in >>%s<<\n", string_result);
}
librdf_free_memory(string_result);
/*
*
* Test librdf_hash_interpret_template
*
*/
fprintf(stdout, "Substituting into template >>%s",
template_string);
template_result=librdf_hash_interpret_template(template_string, h,
(const unsigned char*)"%{",
(const unsigned char*)"}");
if(strcmp((const char*)template_result, (const char*)template_expected)) {
fprintf(stdout, "Templating failed. Result was >>%s<< but expected >>%s<<\n",
template_result, template_expected);
return 0;
} else
fprintf(stdout, "\nresulting in >>%s<<\n", template_result);
LIBRDF_FREE(char*, template_result);
return 0;
}
int
main(int argc, char *argv[])
{
librdf_world* world;
librdf_parser* parser;
librdf_serializer* serializer;
librdf_storage *storage;
librdf_model* model;
librdf_node *source, *arc, *target, *node;
librdf_node *subject, *predicate, *object;
librdf_node* context_node=NULL;
librdf_stream* stream;
librdf_iterator* iterator;
librdf_uri *uri;
librdf_uri *base_uri=NULL;
librdf_query *query;
librdf_query_results *results;
librdf_hash *options;
int count;
int rc;
int transactions=0;
const char* storage_name;
const char* storage_options;
const char* context;
const char* identifier;
const char* results_format;
librdf_statement* statement=NULL;
char* query_cmd=NULL;
char* s;
/*
* Initialize
*/
storage_name="virtuoso";
results_format="xml";
context=DEFAULT_CONTEXT;
identifier=DEFAULT_IDENTIFIER;
/*
* Get connection options
*/
if(argc == 2 && argv[1][0] != '\0')
storage_options=argv[1];
else if((s=getenv ("VIRTUOSO_STORAGE_OPTIONS")) != NULL)
storage_options=s;
else
storage_options=DEFAULT_STORAGE_OPTIONS;
world=librdf_new_world();
librdf_world_set_logger(world, world, log_handler);
librdf_world_open(world);
options=librdf_new_hash(world, NULL);
librdf_hash_open(options, NULL, 0, 1, 1, NULL);
librdf_hash_put_strings(options, "contexts", "yes");
transactions=1;
librdf_hash_from_string(options, storage_options);
storage=librdf_new_storage_with_options(world, storage_name, identifier, options);
if(!storage) {
fprintf(stderr, ": Failed to open %s storage '%s'\n", storage_name, identifier);
return(1);
}
model=librdf_new_model(world, storage, NULL);
if(!model) {
fprintf(stderr, ": Failed to create model\n");
return(1);
}
if(transactions)
librdf_model_transaction_start(model);
/* Do this or gcc moans */
stream=NULL;
iterator=NULL;
parser=NULL;
serializer=NULL;
source=NULL;
arc=NULL;
target=NULL;
subject=NULL;
predicate=NULL;
object=NULL;
uri=NULL;
node=NULL;
query=NULL;
results=NULL;
context_node=librdf_new_node_from_uri_string(world, (const unsigned char *)context);
/**** Test 1 *******/
startTest(1, " Remove all triples in <%s> context\n", context);
{
rc=librdf_model_context_remove_statements(model, context_node);
if(rc)
endTest(0, " failed to remove context triples from the graph\n");
else
endTest(1, " removed context triples from the graph\n");
}
/**** Test 2 *******/
startTest(2, " Add triples to <%s> context\n", context);
{
rc=0;
rc |= add_triple(world, context_node, model, "aa", "bb", "cc");
rc |= add_triple(world, context_node, model, "aa", "bb1", "cc");
rc |= add_triple(world, context_node, model, "aa", "a2", "_:cc");
rc |= add_triple_typed(world, context_node, model, "aa", "a2", "cc");
rc |= add_triple_typed(world, context_node, model, "mm", "nn", "Some long literal with language@en");
rc |= add_triple_typed(world, context_node, model, "oo", "pp", "12345^^<http://www.w3.org/2001/XMLSchema#int>");
if(rc)
endTest(0, " failed add triple\n");
else
endTest(1, " add triple to context\n");
}
/**** Test 3 *******/
startTest(3, " Print all triples in <%s> context\n", context);
{
raptor_iostream* iostr = raptor_new_iostream_to_file_handle(librdf_world_get_raptor(world), stdout);
librdf_model_write(model, iostr);
raptor_free_iostream(iostr);
endTest(1, "\n");
}
/***** Test 4 *****/
startTest(4, " Count of triples in <%s> context\n", context);
{
count=librdf_model_size(model);
if(count >= 0)
endTest(1, " graph has %d triples\n", count);
else
endTest(0, " graph has unknown number of triples\n");
}
/***** Test 5 *****/
startTest(5, " Exec: ARC aa bb \n");
{
subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb");
node=librdf_model_get_target(model, subject, predicate);
librdf_free_node(subject);
librdf_free_node(predicate);
if(!node) {
endTest(0, " Failed to get arc\n");
} else {
print_node(stdout, node);
librdf_free_node(node);
endTest(1, "\n");
}
}
/***** Test 6 *****/
startTest(6, " Exec: ARCS aa cc \n");
{
subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
object=librdf_new_node_from_uri_string(world, (const unsigned char*)"cc");
iterator=librdf_model_get_arcs(model, subject, object);
librdf_free_node(subject);
librdf_free_node(object);
if(!iterator) {
endTest(0, " Failed to get arcs\n");
} else {
print_nodes(stdout, iterator);
endTest(1, "\n");
}
}
/***** Test 7 *****/
startTest(7, " Exec: ARCS-IN cc \n");
{
object=librdf_new_node_from_uri_string(world, (const unsigned char*)"cc");
iterator=librdf_model_get_arcs_in(model, object);
librdf_free_node(object);
if(!iterator) {
endTest(0, " Failed to get arcs in\n");
} else {
int ok=1;
count=0;
while(!librdf_iterator_end(iterator)) {
context_node=(librdf_node*)librdf_iterator_get_context(iterator);
node=(librdf_node*)librdf_iterator_get_object(iterator); /*returns SHARED pointer */
if(!node) {
ok=0;
endTest(ok, " librdf_iterator_get_next returned NULL\n");
break;
}
fputs("Matched arc: ", stdout);
librdf_node_print(node, stdout);
if(context_node) {
fputs(" with context ", stdout);
librdf_node_print(context_node, stdout);
}
fputc('\n', stdout);
count++;
librdf_iterator_next(iterator);
}
librdf_free_iterator(iterator);
endTest(ok, " matching arcs: %d\n", count);
}
}
/***** Test 8 *****/
startTest(8, " Exec: ARCS-OUT aa \n");
{
subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
iterator=librdf_model_get_arcs_out(model, subject);
librdf_free_node(subject);
if(!iterator)
endTest(0, " Failed to get arcs out\n");
else {
int ok=1;
count=0;
while(!librdf_iterator_end(iterator)) {
context_node=(librdf_node*)librdf_iterator_get_context(iterator);
node=(librdf_node*)librdf_iterator_get_object(iterator);
if(!node) {
ok=0;
endTest(ok, " librdf_iterator_get_next returned NULL\n");
break;
}
fputs("Matched arc: ", stdout);
librdf_node_print(node, stdout);
if(context_node) {
fputs(" with context ", stdout);
librdf_node_print(context_node, stdout);
}
fputc('\n', stdout);
count++;
librdf_iterator_next(iterator);
}
librdf_free_iterator(iterator);
endTest(ok, " matching arcs: %d\n", count);
}
}
/***** Test 9 *****/
startTest(9, " Exec: CONTAINS aa bb1 cc \n");
{
subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb1");
object=librdf_new_node_from_uri_string(world, (const unsigned char*)"cc");
statement=librdf_new_statement(world);
librdf_statement_set_subject(statement, subject);
librdf_statement_set_predicate(statement, predicate);
librdf_statement_set_object(statement, object);
if(librdf_model_contains_statement(model, statement))
endTest(1, " the graph contains the triple\n");
else
endTest(0, " the graph does not contain the triple\n");
librdf_free_statement(statement);
}
/***** Test 10 *****/
startTest(10, " Exec: FIND aa - - \n");
{
subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
statement=librdf_new_statement(world);
librdf_statement_set_subject(statement, subject);
stream=librdf_model_find_statements_in_context(model, statement, context_node);
if(!stream) {
endTest(0, " FIND returned no results (NULL stream)\n");
} else {
librdf_node* ctxt_node=NULL;
int ok=1;
count=0;
while(!librdf_stream_end(stream)) {
librdf_statement *stmt=librdf_stream_get_object(stream);
ctxt_node=(librdf_node*)librdf_stream_get_context(stream);
if(!stmt) {
ok=0;
endTest(ok, " librdf_stream_next returned NULL\n");
break;
}
fputs("Matched triple: ", stdout);
librdf_statement_print(stmt, stdout);
if(context) {
fputs(" with context ", stdout);
librdf_node_print(ctxt_node, stdout);
}
fputc('\n', stdout);
count++;
librdf_stream_next(stream);
}
librdf_free_stream(stream);
endTest(ok, " matching triples: %d\n", count);
}
librdf_free_statement(statement);
}
/***** Test 11 *****/
startTest(11, " Exec: HAS-ARC-IN cc bb \n");
{
predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb");
object=librdf_new_node_from_uri_string(world, (const unsigned char*)"cc");
if(librdf_model_has_arc_in(model, object, predicate))
endTest(1, " the graph contains the arc\n");
else
endTest(0, " the graph does not contain the arc\n");
librdf_free_node(predicate);
librdf_free_node(object);
}
/***** Test 12 *****/
startTest(12, " Exec: HAS-ARC-OUT aa bb \n");
{
subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb");
if(librdf_model_has_arc_out(model, subject, predicate))
endTest(1, " the graph contains the arc\n");
else
endTest(0, " the graph does not contain the arc\n");
librdf_free_node(predicate);
librdf_free_node(subject);
}
/***** Test 13 *****/
startTest(13, " Exec: SOURCE aa cc \n");
{
predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb");
object=librdf_new_node_from_uri_string(world, (const unsigned char*)"cc");
node=librdf_model_get_source(model, predicate, object);
librdf_free_node(predicate);
librdf_free_node(object);
if(!node) {
endTest(0, " Failed to get source\n");
} else {
print_node(stdout, node);
librdf_free_node(node);
endTest(1, "\n");
}
}
/***** Test 14 *****/
startTest(14, " Exec: SOURCES bb cc \n");
{
predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb");
object=librdf_new_node_from_uri_string(world, (const unsigned char*)"cc");
iterator=librdf_model_get_sources(model, predicate, object);
librdf_free_node(predicate);
librdf_free_node(object);
if(!iterator) {
endTest(0, " Failed to get sources\n");
} else {
print_nodes(stdout, iterator);
endTest(1, "\n");
}
}
/***** Test 15 *****/
startTest(15, " Exec: TARGET aa bb \n");
{
subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb");
node=librdf_model_get_target(model, subject, predicate);
librdf_free_node(subject);
librdf_free_node(predicate);
if(!node) {
endTest(0, " Failed to get target\n");
} else {
print_node(stdout, node);
librdf_free_node(node);
endTest(1, "\n");
}
}
/***** Test 16 *****/
startTest(16, " Exec: TARGETS aa bb \n");
{
subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb");
iterator=librdf_model_get_targets(model, subject, predicate);
librdf_free_node(subject);
librdf_free_node(predicate);
if(!iterator) {
endTest(0, " Failed to get targets\n");
} else {
print_nodes(stdout, iterator);
endTest(1, "\n");
}
}
/***** Test 17 *****/
startTest(17, " Exec: REMOVE aa bb1 cc \n");
{
subject=librdf_new_node_from_uri_string(world, (const unsigned char*)"aa");
predicate=librdf_new_node_from_uri_string(world, (const unsigned char*)"bb1");
object=librdf_new_node_from_uri_string(world, (const unsigned char*)"cc");
statement=librdf_new_statement(world);
librdf_statement_set_subject(statement, subject);
librdf_statement_set_predicate(statement, predicate);
librdf_statement_set_object(statement, object);
if(librdf_model_context_remove_statement(model, context_node, statement))
endTest(0, " failed to remove triple from the graph\n");
else
endTest(1, " removed triple from the graph\n");
librdf_free_statement(statement);
}
/***** Test 18 *****/
query_cmd=(char *)"CONSTRUCT {?s ?p ?o} FROM <http://red> WHERE {?s ?p ?o}";
startTest(18, " Exec: QUERY \"%s\" \n", query_cmd);
{
query=librdf_new_query(world, (char *)"vsparql", NULL, (const unsigned char *)query_cmd, NULL);
if(!(results=librdf_model_query_execute(model, query))) {
endTest(0, " Query of model with '%s' failed\n", query_cmd);
librdf_free_query(query);
query=NULL;
} else {
stream=librdf_query_results_as_stream(results);
if(!stream) {
endTest(0, " QUERY returned no results (NULL stream)\n");
} else {
librdf_node* ctxt=NULL;
count=0;
while(!librdf_stream_end(stream)) {
librdf_statement *stmt=librdf_stream_get_object(stream); /*returns SHARED pointer */
ctxt=(librdf_node*)librdf_stream_get_context(stream);
if(!stmt) {
endTest(0, " librdf_stream_next returned NULL\n");
break;
}
fputs("Matched triple: ", stdout);
librdf_statement_print(stmt, stdout);
if(ctxt) {
fputs(" with context ", stdout);
librdf_node_print(ctxt, stdout);
}
fputc('\n', stdout);
count++;
librdf_stream_next(stream);
}
librdf_free_stream(stream);
endTest(1, " matching triples: %d\n", count);
librdf_free_query_results(results);
}
}
librdf_free_query(query);
}
/***** Test 19 *****/
query_cmd=(char *)"SELECT * WHERE {graph <http://red> { ?s ?p ?o }}";
startTest(19, " Exec1: QUERY_AS_BINDINGS \"%s\" \n", query_cmd);
{
query=librdf_new_query(world, (char *)"vsparql", NULL, (const unsigned char *)query_cmd, NULL);
if(!(results=librdf_model_query_execute(model, query))) {
endTest(0, " Query of model with '%s' failed\n", query_cmd);
librdf_free_query(query);
query=NULL;
} else {
raptor_iostream *iostr;
librdf_query_results_formatter *formatter;
fprintf(stderr, "**: Formatting query result as '%s':\n", results_format);
iostr = raptor_new_iostream_to_file_handle(librdf_world_get_raptor(world), stdout);
formatter = librdf_new_query_results_formatter2(results, results_format,
NULL /* mime type */,
NULL /* format_uri */);
base_uri = librdf_new_uri(world, (const unsigned char*)"http://example.org/");
librdf_query_results_formatter_write(iostr, formatter, results, base_uri);
librdf_free_query_results_formatter(formatter);
raptor_free_iostream(iostr);
librdf_free_uri(base_uri);
endTest(1, "\n");
librdf_free_query_results(results);
}
librdf_free_query(query);
}
/***** Test 20 *****/
query_cmd=(char *)"SELECT * WHERE {graph <http://red> { ?s ?p ?o }}";
startTest(20, " Exec2: QUERY_AS_BINDINGS \"%s\" \n", query_cmd);
{
query=librdf_new_query(world, (char *)"vsparql", NULL, (const unsigned char *)query_cmd, NULL);
if(!(results=librdf_model_query_execute(model, query))) {
endTest(0, " Query of model with '%s' failed\n", query_cmd);
librdf_free_query(query);
query=NULL;
} else {
if(print_query_results(world, model, results))
endTest(0, "\n");
else
endTest(1, "\n");
librdf_free_query_results(results);
}
librdf_free_query(query);
}
getTotal();
if(transactions)
librdf_model_transaction_commit(model);
librdf_free_node(context_node);
librdf_free_node(context_node);
librdf_free_hash(options);
librdf_free_model(model);
librdf_free_storage(storage);
librdf_free_world(world);
#ifdef LIBRDF_MEMORY_DEBUG
librdf_memory_report(stderr);
#endif
/* keep gcc -Wall happy */
return(0);
}
int
main(int argc, char *argv[])
{
librdf_world *world;
librdf_uri* prefix_uri;
librdf_node* nodes[ITERATOR_NODES_COUNT];
int i;
librdf_iterator* iterator;
int count;
char *program=argv[0];
world=librdf_new_world();
librdf_world_init_mutex(world);
librdf_init_hash(world);
librdf_init_uri(world);
librdf_init_node(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 < ITERATOR_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_static_iterator_create(nodes, ITERATOR_NODES_COUNT);
if(!iterator) {
fprintf(stderr, "%s: Failed to createstatic node iterator\n", program);
return(1);
}
fprintf(stdout, "%s: Listing static node iterator\n", program);
count=0;
while(!librdf_iterator_end(iterator)) {
librdf_node* i_node=(librdf_node*)librdf_iterator_get_object(iterator);
if(!i_node) {
fprintf(stderr, "%s: librdf_iterator_current return NULL when not end o fiterator\n", program);
return(1);
}
fprintf(stdout, "%s: node %d is: ", program, count);
librdf_node_print(i_node, stdout);
fputc('\n', stdout);
if(!librdf_node_equals(i_node, nodes[count])) {
fprintf(stderr, "%s: static node iterator node %i returned unexpected node\n", program, count);
librdf_node_print(i_node, stderr);
fputs(" rather than ", stdout);
librdf_node_print(nodes[count], stderr);
fputc('\n', stdout);
return(1);
}
librdf_iterator_next(iterator);
count++;
}
librdf_free_iterator(iterator);
if(count != ITERATOR_NODES_COUNT) {
fprintf(stderr, "%s: Iterator returned %d nodes, expected %d\n", program,
count, ITERATOR_NODES_COUNT);
return(1);
}
fprintf(stdout, "%s: Static node iterator worked ok\n", program);
fprintf(stdout, "%s: Freeing nodes\n", program);
for (i=0; i<ITERATOR_NODES_COUNT; i++) {
librdf_free_node(nodes[i]);
}
librdf_free_uri(prefix_uri);
librdf_finish_node(world);
librdf_finish_uri(world);
librdf_finish_hash(world);
LIBRDF_FREE(librdf_world, world);
/* keep gcc -Wall happy */
return(0);
}
static int
rasqal_redland_new_triples_source(rasqal_query* rdf_query,
void *factory_user_data,
void *user_data,
rasqal_triples_source *rts)
{
librdf_world *world=(librdf_world*)factory_user_data;
rasqal_redland_triples_source_user_data* rtsc=(rasqal_redland_triples_source_user_data*)user_data;
raptor_sequence *seq;
librdf_query_rasqal_context *context;
librdf_iterator* cit;
rtsc->world = world;
rtsc->query = (librdf_query*)rasqal_query_get_user_data(rdf_query);
context = (librdf_query_rasqal_context*)rtsc->query->context;
rtsc->model = context->model;
seq = rasqal_query_get_data_graph_sequence(rdf_query);
/* FIXME: queries with data graphs in them (such as FROM in SPARQL)
* are deleted, so that there are no unexpected data loads
*/
if(seq) {
while(raptor_sequence_size(seq)) {
rasqal_data_graph* dg=(rasqal_data_graph*)raptor_sequence_pop(seq);
rasqal_free_data_graph(dg);
}
}
if(librdf_model_supports_contexts(rtsc->model)) {
/* Add all contexts (named graphs) to the query so Rasqal can bind them */
cit = librdf_model_get_contexts(rtsc->model);
while(!librdf_iterator_end(cit)) {
librdf_node* node = (librdf_node*)librdf_iterator_get_object(cit);
librdf_uri* uri;
raptor_uri* source_uri;
rasqal_data_graph* dg;
uri = librdf_node_get_uri(node);
source_uri = (raptor_uri*)raptor_new_uri(world->raptor_world_ptr,
librdf_uri_as_string(uri));
dg = rasqal_new_data_graph_from_uri(world->rasqal_world_ptr,
source_uri, source_uri,
RASQAL_DATA_GRAPH_NAMED,
NULL, NULL, NULL);
rasqal_query_add_data_graph(rdf_query, dg);
raptor_free_uri(source_uri);
librdf_iterator_next(cit);
}
librdf_free_iterator(cit);
}
#ifdef RASQAL_TRIPLES_SOURCE_MIN_VERSION
rts->version = 1;
#endif
rts->init_triples_match=rasqal_redland_init_triples_match;
rts->triple_present=rasqal_redland_triple_present;
rts->free_triples_source=rasqal_redland_free_triples_source;
return 0;
}
