/** * 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; }