static int sd_add_dataset_description(librdf_model *sd_model, librdf_node *service_node)
{
librdf_node *dataset_node = NULL, *default_graph_node = NULL;
int triple_count = librdf_storage_size(storage);
dataset_node = librdf_new_node(world);
if (!dataset_node) {
redstore_error("Failed to create default dataset bnode - librdf_new_node returned NULL");
return 1;
}
librdf_model_add(sd_model,
librdf_new_node_from_node(service_node),
librdf_new_node_from_uri_local_name(world, sd_ns_uri,
(const unsigned char *) "defaultDatasetDescription"),
librdf_new_node_from_node(dataset_node)
);
librdf_model_add(sd_model,
librdf_new_node_from_node(dataset_node),
librdf_new_node_from_node(LIBRDF_MS_type(world)),
librdf_new_node_from_uri_local_name(world, sd_ns_uri, (const unsigned char *) "Dataset")
);
default_graph_node = librdf_new_node(world);
if (!default_graph_node) {
redstore_error("Failed to create default graph bnode - librdf_new_node returned NULL");
return 1;
}
librdf_model_add(sd_model,
librdf_new_node_from_node(dataset_node),
librdf_new_node_from_uri_local_name(world, sd_ns_uri,
(const unsigned char *) "defaultGraph"),
librdf_new_node_from_node(default_graph_node)
);
librdf_model_add(sd_model,
librdf_new_node_from_node(default_graph_node),
librdf_new_node_from_node(LIBRDF_MS_type(world)),
librdf_new_node_from_uri_local_name(world, sd_ns_uri, (const unsigned char *) "Graph")
);
if (triple_count>=0) {
librdf_model_add(sd_model,
librdf_new_node_from_node(default_graph_node),
librdf_new_node_from_uri_local_name(world, void_ns_uri, (const unsigned char *) "triples"),
new_node_from_integer(world, triple_count)
);
}
if (dataset_node)
librdf_free_node(dataset_node);
if (default_graph_node)
librdf_free_node(default_graph_node);
return 0;
}
static librdf_storage_trees_graph*
librdf_storage_trees_graph_new(librdf_storage* storage, librdf_node* context_node)
{
librdf_storage_trees_instance* context=(librdf_storage_trees_instance*)storage->instance;
librdf_storage_trees_graph* graph=(librdf_storage_trees_graph*)LIBRDF_MALLOC(
librdf_storage_trees_graph, sizeof(librdf_storage_trees_graph));
#ifdef RDF_STORAGE_TREES_WITH_CONTEXTS
graph->context=(context_node ? librdf_new_node_from_node(context_node) : NULL);
#endif
/* Always create SPO index */
graph->spo_tree=librdf_new_avltree(librdf_statement_compare_spo, librdf_storage_trees_avl_free);
if(!graph->spo_tree) {
LIBRDF_FREE(librdf_storage_trees_graph, graph);
return NULL;
}
if(context->index_sop)
graph->sop_tree=librdf_new_avltree(librdf_statement_compare_sop, NULL);
else
graph->sop_tree=NULL;
if(context->index_ops)
graph->ops_tree=librdf_new_avltree(librdf_statement_compare_ops, NULL);
else
graph->ops_tree=NULL;
if(context->index_pso)
graph->pso_tree=librdf_new_avltree(librdf_statement_compare_pso, NULL);
else
graph->pso_tree=NULL;
return graph;
}
/**
* 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;
}
static int sd_add_query_languages(librdf_model *sd_model, librdf_node *service_node)
{
int i,n;
for(i=0; 1; i++) {
const raptor_syntax_description* desc = librdf_query_language_get_description(world, i);
librdf_node *lang_node = NULL;
if (!desc)
break;
for (n = 0; desc->names[n]; n++) {
if (strcmp(desc->names[n], "sparql10")==0) {
lang_node = librdf_new_node_from_uri_local_name(world, sd_ns_uri, (unsigned char *) "SPARQL10Query");
break;
} else if (strcmp(desc->names[n], "sparql11-query")==0) {
lang_node = librdf_new_node_from_uri_local_name(world, sd_ns_uri, (unsigned char *) "SPARQL11Query");
break;
}
}
if (lang_node) {
librdf_model_add(sd_model,
librdf_new_node_from_node(service_node),
librdf_new_node_from_uri_local_name(world, sd_ns_uri,
(const unsigned char *) "supportedLanguage"),
librdf_new_node_from_node(lang_node)
);
librdf_model_add(sd_model,
librdf_new_node_from_node(lang_node),
librdf_new_node_from_node(LIBRDF_S_comment(world)),
librdf_new_node_from_literal(world, (const unsigned char *) desc->label, NULL, 0)
);
if (desc->uri_strings) {
for (n = 0; desc->uri_strings[n]; n++) {
librdf_model_add(sd_model,
librdf_new_node_from_node(lang_node),
librdf_new_node_from_node(LIBRDF_S_seeAlso(world)),
librdf_new_node_from_uri_string(world, (const unsigned char *) desc->uri_strings[n])
);
}
}
librdf_free_node(lang_node);
}
}
return 0;
}
static librdf_model * create_service_description(librdf_storage *sd_storage, const char * request_url)
{
librdf_model *sd_model = NULL;
librdf_node *service_node = NULL;
char *comment = NULL;
sd_model = librdf_new_model(world, sd_storage, NULL);
if (!sd_model) {
redstore_error("Failed to create model for service description.");
return NULL;
}
service_node = librdf_new_node(world);
if (!service_node) {
redstore_error("Failed to create service description bnode - librdf_new_node returned NULL");
librdf_free_model(sd_model);
return NULL;
}
librdf_model_add(sd_model,
librdf_new_node_from_node(service_node),
librdf_new_node_from_node(LIBRDF_MS_type(world)),
librdf_new_node_from_uri_local_name(world, sd_ns_uri, (unsigned char *) "Service")
);
sd_add_format_descriptions(sd_model, service_node, librdf_parser_get_description, "inputFormat");
sd_add_format_descriptions(sd_model, service_node, librdf_serializer_get_description, "resultFormat");
sd_add_format_descriptions(sd_model, service_node, librdf_query_results_formats_get_description, "resultFormat");
sd_add_query_languages(sd_model, service_node);
sd_add_dataset_description(sd_model, service_node);
librdf_model_add(sd_model,
librdf_new_node_from_node(service_node),
librdf_new_node_from_node(LIBRDF_S_label(world)),
librdf_new_node_from_literal(world, (unsigned char *) storage_name, NULL, 0)
);
#define COMMENT_MAX_LEN (128)
comment = malloc(COMMENT_MAX_LEN);
snprintf(comment, COMMENT_MAX_LEN, "RedStore %s endpoint using the '%s' storage module.",
PACKAGE_VERSION, storage_type);
librdf_model_add(sd_model,
librdf_new_node_from_node(service_node),
librdf_new_node_from_node(LIBRDF_S_comment(world)),
librdf_new_node_from_literal(world, (unsigned char *) comment, NULL, 0)
);
free(comment);
librdf_model_add(sd_model,
librdf_new_node_from_node(service_node),
librdf_new_node_from_uri_local_name(world, sd_ns_uri, (unsigned char *) "endpoint"),
sd_get_endpoint_node(request_url)
);
// Redland's default graph is the union of all other graphs
librdf_model_add(sd_model,
librdf_new_node_from_node(service_node),
librdf_new_node_from_uri_local_name(world, sd_ns_uri, (unsigned char *) "feature"),
librdf_new_node_from_uri_local_name(world, sd_ns_uri, (unsigned char *) "UnionDefaultGraph")
);
librdf_free_node(service_node);
return sd_model;
}
static int sd_add_format_descriptions(librdf_model *sd_model, librdf_node *service_node, description_proc_t desc_proc, const char *type)
{
librdf_node *format_node = NULL;
unsigned int i,n;
for(i=0; 1; i++) {
const raptor_syntax_description* desc = NULL;
int uri_index = 0;
desc = desc_proc(world, i);
if (!desc)
break;
// Hack to remove the 'guess' format from the service description
if (strcmp(desc->names[0], "guess") == 0)
continue;
// If the format has a format URI, use that, otherwise create a bnode
if (desc->uri_strings && desc->uri_strings[0] && strncmp("http://www.w3.org/ns/formats/", desc->uri_strings[0], 29) == 0) {
format_node = librdf_new_node_from_uri_string(world, (const unsigned char *) desc->uri_strings[0]);
uri_index++;
} else {
format_node = librdf_new_node(world);
}
if (!format_node) {
redstore_error("Failed to create new node for format.");
return -1;
}
librdf_model_add(sd_model,
librdf_new_node_from_node(format_node),
librdf_new_node_from_node(LIBRDF_MS_type(world)),
librdf_new_node_from_uri_local_name(world, format_ns_uri, (const unsigned char *) "Format")
);
librdf_model_add(sd_model,
librdf_new_node_from_node(service_node),
librdf_new_node_from_uri_local_name(world, sd_ns_uri,
(const unsigned char *) type),
librdf_new_node_from_node(format_node)
);
for (n = 0; desc->names[n]; n++) {
librdf_model_add(sd_model,
librdf_new_node_from_node(format_node),
librdf_new_node_from_node(LIBRDF_S_label(world)),
librdf_new_node_from_literal(world, (const unsigned char *) desc->names[n],
NULL, 0)
);
}
if (desc->label) {
librdf_model_add(sd_model,
librdf_new_node_from_node(format_node),
librdf_new_node_from_node(LIBRDF_S_comment(world)),
librdf_new_node_from_literal(world, (const unsigned char *) desc->label, NULL,
0)
);
}
for (n = 0; n < desc->mime_types_count; n++) {
const raptor_type_q mime_type = desc->mime_types[n];
librdf_model_add(sd_model,
librdf_new_node_from_node(format_node),
librdf_new_node_from_uri_local_name(world, format_ns_uri,
(const unsigned char *) "media_type"),
librdf_new_node_from_literal(world, (unsigned char *) mime_type.mime_type,
NULL, 0)
);
}
if (desc->uri_strings) {
int firstUri = uri_index;
for (; desc->uri_strings[uri_index]; uri_index++) {
const unsigned char *uri_string = (const unsigned char *) desc->uri_strings[uri_index];
if (firstUri == uri_index) {
librdf_model_add(sd_model,
librdf_new_node_from_node(format_node),
librdf_new_node_from_node(LIBRDF_S_isDefinedBy(world)),
librdf_new_node_from_uri_string(world, uri_string)
);
} else {
librdf_model_add(sd_model,
librdf_new_node_from_node(format_node),
librdf_new_node_from_node(LIBRDF_S_seeAlso(world)),
librdf_new_node_from_uri_string(world, uri_string)
);
}
}
}
librdf_free_node(format_node);
}
return 0;
}
