/**
* rasqal_engine_rowsort_calculate_order_values:
* @query: query object
* @row: row
*
* INTERNAL - Calculate the order condition values for a row
*
* Return value: non-0 on failure
*/
int
rasqal_engine_rowsort_calculate_order_values(rasqal_query* query,
rasqal_row* row)
{
int i;
raptor_sequence *order_seq;
if(!row->order_size)
return 1;
order_seq = rasqal_query_get_order_conditions_sequence(query);
for(i = 0; i < row->order_size; i++) {
rasqal_expression* e;
rasqal_literal *l;
e = (rasqal_expression*)raptor_sequence_get_at(order_seq, i);
l = rasqal_expression_evaluate(query->world, &query->locator,
e, query->compare_flags);
if(row->order_values[i])
rasqal_free_literal(row->order_values[i]);
if(l) {
row->order_values[i] = rasqal_new_literal_from_literal(rasqal_literal_value(l));
rasqal_free_literal(l);
} else
row->order_values[i] = NULL;
}
return 0;
}
/**
* rasqal_query_results_execute_with_engine:
* @query_results: the #rasqal_query_results object
* @engine: execution factory
* @store_results: non-0 to store query results
*
* INTERNAL - Create a new query results set executing a prepared query with the given execution engine
*
* return value: non-0 on failure
**/
int
rasqal_query_results_execute_with_engine(rasqal_query_results* query_results,
const rasqal_query_execution_factory* engine,
int store_results)
{
int rc = 0;
size_t ex_data_size;
rasqal_query* query;
RASQAL_ASSERT_OBJECT_POINTER_RETURN_VALUE(query_results, rasqal_query_results, 1);
query = query_results->query;
if(query->failed)
return 1;
query_results->execution_factory = engine;
/* set executed flag early to enable cleanup on error */
query_results->executed = 1;
/* ensure stored results are present if ordering or distincting are being done */
query_results->store_results = (store_results ||
rasqal_query_get_order_conditions_sequence(query) ||
query->distinct);
ex_data_size = query_results->execution_factory->execution_data_size;
if(ex_data_size > 0) {
query_results->execution_data = RASQAL_CALLOC(data, 1, ex_data_size);
if(!query_results->execution_data)
return 1;
} else
query_results->execution_data = NULL;
/* Update the current datetime once per query execution */
rasqal_world_reset_now(query->world);
if(query_results->execution_factory->execute_init) {
rasqal_engine_error execution_error = RASQAL_ENGINE_OK;
int execution_flags = 0;
if(query_results->store_results)
execution_flags |= 1;
rc = query_results->execution_factory->execute_init(query_results->execution_data, query, query_results, execution_flags, &execution_error);
if(rc || execution_error != RASQAL_ENGINE_OK) {
query_results->failed = 1;
return 1;
}
}
#ifdef RASQAL_DEBUG
RASQAL_DEBUG1("After execute_init, query is now:\n");
rasqal_query_print(query, stderr);
#endif
/* Choose either to execute all now and store OR do it on demand (lazy) */
if(query_results->store_results)
rc = rasqal_query_results_execute_and_store_results(query_results);
return rc;
}
int
rasqal_query_write_sparql_20060406(raptor_iostream *iostr,
rasqal_query* query, raptor_uri *base_uri)
{
int i;
sparql_writer_context wc;
int limit, offset;
rasqal_query_verb verb;
wc.world = query->world;
wc.base_uri = NULL;
wc.type_uri = raptor_new_uri_for_rdf_concept(query->world->raptor_world_ptr,
(const unsigned char*)"type");
wc.nstack = raptor_new_namespaces(query->world->raptor_world_ptr, 1);
if(base_uri) {
raptor_iostream_counted_string_write("BASE ", 5, iostr);
rasqal_query_write_sparql_uri(&wc, iostr, base_uri);
raptor_iostream_write_byte('\n', iostr);
/* from now on all URIs are relative to this */
wc.base_uri = raptor_uri_copy(base_uri);
}
for(i = 0; 1 ; i++) {
raptor_namespace *nspace;
rasqal_prefix* p = rasqal_query_get_prefix(query, i);
if(!p)
break;
raptor_iostream_counted_string_write("PREFIX ", 7, iostr);
if(p->prefix)
raptor_iostream_string_write(p->prefix, iostr);
raptor_iostream_counted_string_write(": ", 2, iostr);
rasqal_query_write_sparql_uri(&wc, iostr, p->uri);
raptor_iostream_write_byte('\n', iostr);
/* Use this constructor so we copy a URI directly */
nspace = raptor_new_namespace_from_uri(wc.nstack, p->prefix, p->uri, i);
raptor_namespaces_start_namespace(wc.nstack, nspace);
}
if(query->explain)
raptor_iostream_counted_string_write("EXPLAIN ", 8, iostr);
verb = query->verb;
/* These terms are deprecated */
if(query->verb == RASQAL_QUERY_VERB_INSERT ||
query->verb == RASQAL_QUERY_VERB_DELETE) {
verb = RASQAL_QUERY_VERB_UPDATE;
}
/* Write SPARQL 1.1 (Draft) Update forms */
if(verb == RASQAL_QUERY_VERB_UPDATE) {
rasqal_update_operation* update;
/* Write SPARQL Update */
for(i = 0; (update = rasqal_query_get_update_operation(query, i)); i++) {
int is_always_2_args = (update->type >= RASQAL_UPDATE_TYPE_ADD &&
update->type <= RASQAL_UPDATE_TYPE_COPY);
if(update->type == RASQAL_UPDATE_TYPE_UPDATE) {
/* update operations:
* WITH ... INSERT { template } DELETE { template } WHERE { template }
* INSERT/DELETE { template } WHERE { template }
* INSERT/DELETE DATA { triples }
*/
if(update->graph_uri) {
raptor_iostream_counted_string_write("WITH ", 5, iostr);
rasqal_query_write_sparql_uri(&wc, iostr, update->graph_uri);
raptor_iostream_write_byte('\n', iostr);
}
if(update->delete_templates) {
raptor_iostream_counted_string_write("DELETE ", 7, iostr);
if(update->flags & RASQAL_UPDATE_FLAGS_DATA)
raptor_iostream_counted_string_write("DATA ", 5, iostr);
rasqal_query_write_sparql_triple_data(&wc, iostr,
update->delete_templates,
0);
raptor_iostream_write_byte('\n', iostr);
}
if(update->insert_templates) {
raptor_iostream_counted_string_write("INSERT ", 7, iostr);
if(update->flags & RASQAL_UPDATE_FLAGS_DATA)
raptor_iostream_counted_string_write("DATA ", 5, iostr);
rasqal_query_write_sparql_triple_data(&wc, iostr,
update->insert_templates,
0);
raptor_iostream_write_byte('\n', iostr);
}
if(update->where) {
raptor_iostream_counted_string_write("WHERE ", 6, iostr);
rasqal_query_write_sparql_graph_pattern(&wc, iostr,
update->where,
-1, 0);
raptor_iostream_write_byte('\n', iostr);
}
} else {
/* admin operations:
* CLEAR GRAPH graph-uri | DEFAULT | NAMED | ALL
* CREATE (SILENT) GRAPH graph-uri | DEFAULT | NAMED | ALL
* DROP (SILENT) GRAPH graph-uri
* LOAD (SILENT) doc-uri / LOAD (SILENT) doc-uri INTO GRAPH graph-uri
* ADD (SILENT) GraphOrDefault TO GraphOrDefault
* MOVE (SILENT) GraphOrDefault TO GraphOrDefault
* COPY (SILENT) GraphOrDefault TO GraphOrDefault
*/
raptor_iostream_string_write(rasqal_update_type_label(update->type),
iostr);
if(update->flags & RASQAL_UPDATE_FLAGS_SILENT)
raptor_iostream_counted_string_write(" SILENT", 7, iostr);
if(is_always_2_args) {
/* ADD, MOVE, COPY are always 2-arg admin operations */
rasqal_query_write_graphref(&wc, iostr,
update->graph_uri,
RASQAL_UPDATE_GRAPH_ONE);
raptor_iostream_counted_string_write(" TO", 3, iostr);
rasqal_query_write_graphref(&wc, iostr,
update->document_uri,
RASQAL_UPDATE_GRAPH_ONE);
} else if(update->type == RASQAL_UPDATE_TYPE_LOAD) {
/* LOAD is 1 or 2 URIs and first one never has a GRAPH prefix */
raptor_iostream_write_byte(' ', iostr);
rasqal_query_write_sparql_uri(&wc, iostr, update->document_uri);
if(update->graph_uri) {
raptor_iostream_counted_string_write(" INTO", 5, iostr);
rasqal_query_write_graphref(&wc, iostr,
update->graph_uri,
RASQAL_UPDATE_GRAPH_ONE);
}
} else {
/* everything else is defined by update->applies; only
* CLEAR and DROP may apply to >1 graph
*/
rasqal_query_write_graphref(&wc, iostr,
update->graph_uri,
update->applies);
}
raptor_iostream_write_byte('\n', iostr);
}
}
goto tidy;
}
if(verb != RASQAL_QUERY_VERB_CONSTRUCT)
raptor_iostream_string_write(rasqal_query_verb_as_string(query->verb),
iostr);
if(query->distinct) {
if(query->distinct == 1)
raptor_iostream_counted_string_write(" DISTINCT", 9, iostr);
else
raptor_iostream_counted_string_write(" REDUCED", 8, iostr);
}
if(query->wildcard)
raptor_iostream_counted_string_write(" *", 2, iostr);
else if(verb == RASQAL_QUERY_VERB_DESCRIBE) {
raptor_sequence *lit_seq = query->describes;
int count = raptor_sequence_size(lit_seq);
for(i = 0; i < count; i++) {
rasqal_literal* l = (rasqal_literal*)raptor_sequence_get_at(lit_seq, i);
raptor_iostream_write_byte(' ', iostr);
rasqal_query_write_sparql_literal(&wc, iostr, l);
}
} else if(verb == RASQAL_QUERY_VERB_SELECT) {
rasqal_query_write_sparql_select(&wc, iostr, query->selects);
}
raptor_iostream_write_byte('\n', iostr);
if(query->data_graphs) {
for(i = 0; 1; i++) {
rasqal_data_graph* dg = rasqal_query_get_data_graph(query, i);
if(!dg)
break;
if(dg->flags & RASQAL_DATA_GRAPH_NAMED)
continue;
rasqal_query_write_data_format_comment(&wc, iostr, dg);
raptor_iostream_counted_string_write("FROM ", 5, iostr);
rasqal_query_write_sparql_uri(&wc, iostr, dg->uri);
raptor_iostream_counted_string_write("\n", 1, iostr);
}
for(i = 0; 1; i++) {
rasqal_data_graph* dg = rasqal_query_get_data_graph(query, i);
if(!dg)
break;
if(!(dg->flags & RASQAL_DATA_GRAPH_NAMED))
continue;
rasqal_query_write_data_format_comment(&wc, iostr, dg);
raptor_iostream_counted_string_write("FROM NAMED ", 11, iostr);
rasqal_query_write_sparql_uri(&wc, iostr, dg->name_uri);
raptor_iostream_write_byte('\n', iostr);
}
}
if(query->constructs) {
raptor_iostream_string_write("CONSTRUCT {\n", iostr);
for(i = 0; 1; i++) {
rasqal_triple* t = rasqal_query_get_construct_triple(query, i);
if(!t)
break;
raptor_iostream_counted_string_write(" ", 2, iostr);
rasqal_query_write_sparql_triple(&wc, iostr, t);
raptor_iostream_write_byte('\n', iostr);
}
raptor_iostream_counted_string_write("}\n", 2, iostr);
}
if(query->query_graph_pattern) {
raptor_iostream_counted_string_write("WHERE ", 6, iostr);
rasqal_query_write_sparql_graph_pattern(&wc, iostr,
query->query_graph_pattern,
-1, 0);
raptor_iostream_write_byte('\n', iostr);
}
if(rasqal_query_get_group_conditions_sequence(query)) {
raptor_iostream_counted_string_write("GROUP BY ", 9, iostr);
for(i = 0; 1; i++) {
rasqal_expression* expr = rasqal_query_get_group_condition(query, i);
if(!expr)
break;
if(i > 0)
raptor_iostream_write_byte(' ', iostr);
rasqal_query_write_sparql_expression(&wc, iostr, expr);
}
raptor_iostream_write_byte('\n', iostr);
}
if(rasqal_query_get_having_conditions_sequence(query)) {
raptor_iostream_counted_string_write("HAVING ", 7, iostr);
for(i = 0; 1; i++) {
rasqal_expression* expr = rasqal_query_get_having_condition(query, i);
if(!expr)
break;
if(i > 0)
raptor_iostream_write_byte(' ', iostr);
rasqal_query_write_sparql_expression(&wc, iostr, expr);
}
raptor_iostream_write_byte('\n', iostr);
}
if(rasqal_query_get_order_conditions_sequence(query)) {
raptor_iostream_counted_string_write("ORDER BY ", 9, iostr);
for(i = 0; 1; i++) {
rasqal_expression* expr = rasqal_query_get_order_condition(query, i);
if(!expr)
break;
if(i > 0)
raptor_iostream_write_byte(' ', iostr);
rasqal_query_write_sparql_expression(&wc, iostr, expr);
}
raptor_iostream_write_byte('\n', iostr);
}
limit = rasqal_query_get_limit(query);
offset = rasqal_query_get_offset(query);
if(limit >= 0 || offset >= 0) {
if(limit >= 0) {
raptor_iostream_counted_string_write("LIMIT ", 7, iostr);
raptor_iostream_decimal_write(limit, iostr);
}
if(offset >= 0) {
if(limit)
raptor_iostream_write_byte(' ', iostr);
raptor_iostream_counted_string_write("OFFSET ", 8, iostr);
raptor_iostream_decimal_write(offset, iostr);
}
raptor_iostream_write_byte('\n', iostr);
}
if(query->bindings)
rasqal_write_sparql_bindings(&wc, iostr, query->bindings);
tidy:
raptor_free_uri(wc.type_uri);
if(wc.base_uri)
raptor_free_uri(wc.base_uri);
raptor_free_namespaces(wc.nstack);
return 0;
}
