/** * rasqal_variable_print: * @v: the #rasqal_variable object * @fh: the FILE* handle to print to * * Print a Rasqal variable in a debug format. * * The print debug format may change in any release. * * Return value: non-0 on failure **/ int rasqal_variable_print(rasqal_variable* v, FILE* fh) { if(v->type == RASQAL_VARIABLE_TYPE_ANONYMOUS) fprintf(fh, "anon-variable(%s", v->name); else fprintf(fh, "variable(%s", v->name); if(v->expression) { fputc('=', fh); rasqal_expression_print(v->expression, fh); } if(v->value) { fputc('=', fh); rasqal_literal_print(v->value, fh); } #ifdef RASQAL_DEBUG_VARIABLE_USAGE fprintf(fh, "[%d]", v->usage); #endif fputc(')', fh); return 0; }
static void roqet_query_write_variable(FILE* fh, rasqal_variable* v) { fputs((const char*)v->name, fh); if(v->expression) { fputc('=', fh); rasqal_expression_print(v->expression, fh); } }
fs_binding *fs_binding_apply_filters(fs_query *q, int block, fs_binding *b, raptor_sequence *constr) { fs_binding *ret = fs_binding_copy(b); if (!constr) { /* if there's no constriants then we don't need to do anything */ return ret; } for (int col=0; b[col].name; col++) { ret[col].vals->length = 0; } int length = fs_binding_length(b); fs_binding *restore = q->bt; q->bt = b; /* TODO should prefetch lexical vals here */ /* expressions that have been optimised out will be replaces with NULL, * so we have to be careful here */ /* --------------------------- */ /* PREFETCH should go here XXX */ /* --------------------------- */ for (int row=0; row<length; row++) { for (int c=0; c<raptor_sequence_size(constr); c++) { rasqal_expression *e = raptor_sequence_get_at(constr, c); if (!e) continue; fs_value v = fs_expression_eval(q, row, block, e); #ifdef DEBUG_FILTER rasqal_expression_print(e, stdout); printf(" -> "); fs_value_print(v); printf("\n"); #endif if (v.valid & fs_valid_bit(FS_V_TYPE_ERROR) && v.lex) { q->warnings = g_slist_prepend(q->warnings, v.lex); } fs_value result = fn_ebv(v); /* its EBV is not true, so we skip to the next one */ if (result.valid & fs_valid_bit(FS_V_TYPE_ERROR) || !result.in) { continue; } for (int col=0; b[col].name; col++) { if (b[col].bound) { fs_rid_vector_append(ret[col].vals, b[col].vals->data[row]); } } } } q->bt = restore; return ret; }
/** * rasqal_expression_evaluate2: * @e: The expression to evaluate. * @eval_context: expression context * @error_p: pointer to error return flag * * Evaluate a #rasqal_expression tree in the context of a * #rasqal_evaluation_context to give a #rasqal_literal result or error. * * Return value: a #rasqal_literal value or NULL (a valid value). @error_p is set to non-0 on failure. **/ rasqal_literal* rasqal_expression_evaluate2(rasqal_expression* e, rasqal_evaluation_context* eval_context, int *error_p) { rasqal_world *world; int flags; rasqal_literal* result = NULL; rasqal_literal *l1; rasqal_literal *l2; /* pack vars from different switch cases in unions to save some stack space */ union { struct { int e1; int e2; } errs; struct { int dummy_do_not_mask_e; int free_literal; } flags; int e; } errs; union { struct { int b1; int b2; } bools; int b; int i; raptor_uri *dt_uri; const unsigned char *s; unsigned char *new_s; rasqal_variable *v; rasqal_expression *e; struct { void *dummy_do_not_mask; int found; } flags; rasqal_xsd_datetime* dt; struct timeval *tv; raptor_stringbuffer* sb; } vars; RASQAL_ASSERT_OBJECT_POINTER_RETURN_VALUE(e, rasqal_expression, NULL); RASQAL_ASSERT_OBJECT_POINTER_RETURN_VALUE(eval_context, rasqal_evaluation_context, NULL); RASQAL_ASSERT_OBJECT_POINTER_RETURN_VALUE(error_p, intp, NULL); world = eval_context->world; flags = eval_context->flags; errs.e = 0; #ifdef RASQAL_DEBUG RASQAL_DEBUG2("evaluating expression %p: ", e); rasqal_expression_print(e, stderr); fprintf(stderr, "\n"); #endif switch(e->op) { case RASQAL_EXPR_AND: errs.errs.e1 = 0; l1 = rasqal_expression_evaluate2(e->arg1, eval_context, &errs.errs.e1); if(errs.errs.e1) { vars.bools.b1 = 0; } else { vars.bools.b1 = rasqal_literal_as_boolean(l1, &errs.errs.e1); rasqal_free_literal(l1); } errs.errs.e2 = 0; l1 = rasqal_expression_evaluate2(e->arg2, eval_context, &errs.errs.e2); if(errs.errs.e2) { vars.bools.b2 = 0; } else { vars.bools.b2 = rasqal_literal_as_boolean(l1, &errs.errs.e2); rasqal_free_literal(l1); } /* See http://www.w3.org/TR/2005/WD-rdf-sparql-query-20051123/#truthTable */ if(!errs.errs.e1 && !errs.errs.e2) { /* No type error, answer is A && B */ vars.b = vars.bools.b1 && vars.bools.b2; /* don't need b1,b2 anymore */ } else { if((!vars.bools.b1 && errs.errs.e2) || (errs.errs.e1 && vars.bools.b2)) /* F && E => F. E && F => F. */ vars.b = 0; else /* Otherwise E */ goto failed; } result = rasqal_new_boolean_literal(world, vars.b); break; case RASQAL_EXPR_OR: errs.errs.e1 = 0; l1 = rasqal_expression_evaluate2(e->arg1, eval_context, &errs.errs.e1); if(errs.errs.e1) { vars.bools.b1 = 0; } else { vars.bools.b1 = rasqal_literal_as_boolean(l1, &errs.errs.e1); rasqal_free_literal(l1); } errs.errs.e2 = 0; l1 = rasqal_expression_evaluate2(e->arg2, eval_context, &errs.errs.e2); if(errs.errs.e2) { vars.bools.b2 = 0; } else { vars.bools.b2 = rasqal_literal_as_boolean(l1, &errs.errs.e2); rasqal_free_literal(l1); } /* See http://www.w3.org/TR/2005/WD-rdf-sparql-query-20051123/#truthTable */ if(!errs.errs.e1 && !errs.errs.e2) { /* No type error, answer is A || B */ vars.b = vars.bools.b1 || vars.bools.b2; /* don't need b1,b2 anymore */ } else { if((vars.bools.b1 && errs.errs.e2) || (errs.errs.e1 && vars.bools.b2)) /* T || E => T. E || T => T */ vars.b = 1; else /* Otherwise E */ goto failed; } result = rasqal_new_boolean_literal(world, vars.b); break; case RASQAL_EXPR_EQ: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; l2 = rasqal_expression_evaluate2(e->arg2, eval_context, error_p); if(*error_p || !l2) { rasqal_free_literal(l1); goto failed; } /* FIXME - this should probably be checked at literal creation * time */ if(!rasqal_xsd_datatype_check(l1->type, l1->string, flags) || !rasqal_xsd_datatype_check(l2->type, l2->string, flags)) { RASQAL_DEBUG1("One of the literals was invalid\n"); goto failed; } vars.b = (rasqal_literal_equals_flags(l1, l2, flags, &errs.e) != 0); #if RASQAL_DEBUG > 1 if(errs.e) RASQAL_DEBUG1("rasqal_literal_equals_flags returned: FAILURE\n"); else RASQAL_DEBUG2("rasqal_literal_equals_flags returned: %d\n", vars.b); #endif rasqal_free_literal(l1); rasqal_free_literal(l2); if(errs.e) goto failed; result = rasqal_new_boolean_literal(world, vars.b); break; case RASQAL_EXPR_NEQ: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; l2 = rasqal_expression_evaluate2(e->arg2, eval_context, error_p); if(*error_p || !l2) { rasqal_free_literal(l1); goto failed; } vars.b = (rasqal_literal_not_equals_flags(l1, l2, flags, &errs.e) != 0); #if RASQAL_DEBUG > 1 if(errs.e) RASQAL_DEBUG1("rasqal_literal_not_equals_flags returned: FAILURE\n"); else RASQAL_DEBUG2("rasqal_literal_not_equals_flags returned: %d\n", vars.b); #endif rasqal_free_literal(l1); rasqal_free_literal(l2); if(errs.e) goto failed; result = rasqal_new_boolean_literal(world, vars.b); break; case RASQAL_EXPR_LT: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; l2 = rasqal_expression_evaluate2(e->arg2, eval_context, error_p); if(*error_p || !l2) { rasqal_free_literal(l1); goto failed; } vars.b = (rasqal_literal_compare(l1, l2, flags, &errs.e) < 0); rasqal_free_literal(l1); rasqal_free_literal(l2); if(errs.e) goto failed; result = rasqal_new_boolean_literal(world, vars.b); break; case RASQAL_EXPR_GT: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; l2 = rasqal_expression_evaluate2(e->arg2, eval_context, error_p); if(*error_p || !l2) { rasqal_free_literal(l1); goto failed; } vars.b = (rasqal_literal_compare(l1, l2, flags, &errs.e) > 0); rasqal_free_literal(l1); rasqal_free_literal(l2); if(errs.e) goto failed; result = rasqal_new_boolean_literal(world, vars.b); break; case RASQAL_EXPR_LE: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; l2 = rasqal_expression_evaluate2(e->arg2, eval_context, error_p); if(*error_p || !l2) { rasqal_free_literal(l1); goto failed; } vars.b = (rasqal_literal_compare(l1, l2, flags, &errs.e) <= 0); rasqal_free_literal(l1); rasqal_free_literal(l2); if(errs.e) goto failed; result = rasqal_new_boolean_literal(world, vars.b); break; case RASQAL_EXPR_GE: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; l2 = rasqal_expression_evaluate2(e->arg2, eval_context, error_p); if(*error_p || !l2) { rasqal_free_literal(l1); goto failed; } vars.b = (rasqal_literal_compare(l1, l2, flags, &errs.e) >= 0); rasqal_free_literal(l1); rasqal_free_literal(l2); if(errs.e) goto failed; result = rasqal_new_boolean_literal(world, vars.b); break; case RASQAL_EXPR_UMINUS: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; result = rasqal_literal_negate(l1, &errs.e); rasqal_free_literal(l1); if(errs.e) goto failed; break; case RASQAL_EXPR_BOUND: result = rasqal_expression_evaluate_bound(e, eval_context, error_p); break; case RASQAL_EXPR_STR: result = rasqal_expression_evaluate_str(e, eval_context, error_p); break; case RASQAL_EXPR_LANG: result = rasqal_expression_evaluate_lang(e, eval_context, error_p); break; case RASQAL_EXPR_LANGMATCHES: result = rasqal_expression_evaluate_langmatches(e, eval_context, error_p); break; case RASQAL_EXPR_DATATYPE: result = rasqal_expression_evaluate_datatype(e, eval_context, error_p); break; case RASQAL_EXPR_ISURI: case RASQAL_EXPR_ISBLANK: case RASQAL_EXPR_ISLITERAL: case RASQAL_EXPR_ISNUMERIC: result = rasqal_expression_evaluate_istype(e, eval_context, error_p); break; case RASQAL_EXPR_PLUS: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; l2 = rasqal_expression_evaluate2(e->arg2, eval_context, error_p); if(*error_p || !l2) { rasqal_free_literal(l1); goto failed; } result = rasqal_literal_add(l1, l2, &errs.e); rasqal_free_literal(l1); rasqal_free_literal(l2); if(errs.e) goto failed; break; case RASQAL_EXPR_MINUS: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; l2 = rasqal_expression_evaluate2(e->arg2, eval_context, error_p); if(*error_p || !l2) { rasqal_free_literal(l1); goto failed; } result = rasqal_literal_subtract(l1, l2, &errs.e); rasqal_free_literal(l1); rasqal_free_literal(l2); if(errs.e) goto failed; break; case RASQAL_EXPR_STAR: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; l2 = rasqal_expression_evaluate2(e->arg2, eval_context, error_p); if(*error_p || !l2) { rasqal_free_literal(l1); goto failed; } result = rasqal_literal_multiply(l1, l2, &errs.e); rasqal_free_literal(l1); rasqal_free_literal(l2); if(errs.e) goto failed; break; case RASQAL_EXPR_SLASH: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; l2 = rasqal_expression_evaluate2(e->arg2, eval_context, error_p); if(*error_p || !l2) { rasqal_free_literal(l1); goto failed; } result = rasqal_literal_divide(l1, l2, &errs.e); rasqal_free_literal(l1); rasqal_free_literal(l2); if(errs.e) goto failed; break; case RASQAL_EXPR_REM: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; l2 = rasqal_expression_evaluate2(e->arg2, eval_context, error_p); if(*error_p || !l2) { rasqal_free_literal(l1); goto failed; } vars.i = rasqal_literal_as_integer(l2, &errs.errs.e2); /* error if divisor is zero */ if(!vars.i) errs.errs.e2 = 1; else vars.i = rasqal_literal_as_integer(l1, &errs.errs.e1) % vars.i; rasqal_free_literal(l1); rasqal_free_literal(l2); if(errs.errs.e1 || errs.errs.e2) goto failed; result = rasqal_new_integer_literal(world, RASQAL_LITERAL_INTEGER, vars.i); break; case RASQAL_EXPR_STR_EQ: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; l2 = rasqal_expression_evaluate2(e->arg2, eval_context, error_p); if(*error_p || !l2) { rasqal_free_literal(l1); goto failed; } vars.b = (rasqal_literal_compare(l1, l2, flags | RASQAL_COMPARE_NOCASE, &errs.e) == 0); rasqal_free_literal(l1); rasqal_free_literal(l2); if(errs.e) goto failed; result = rasqal_new_boolean_literal(world, vars.b); break; case RASQAL_EXPR_STR_NEQ: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; l2 = rasqal_expression_evaluate2(e->arg2, eval_context, error_p); if(*error_p || !l2) { rasqal_free_literal(l1); goto failed; } vars.b = (rasqal_literal_compare(l1, l2, flags | RASQAL_COMPARE_NOCASE, &errs.e) != 0); rasqal_free_literal(l1); rasqal_free_literal(l2); if(errs.e) goto failed; result = rasqal_new_boolean_literal(world, vars.b); break; case RASQAL_EXPR_TILDE: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; vars.i= ~ rasqal_literal_as_integer(l1, &errs.e); rasqal_free_literal(l1); if(errs.e) goto failed; result = rasqal_new_integer_literal(world, RASQAL_LITERAL_INTEGER, vars.i); break; case RASQAL_EXPR_BANG: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; vars.b = ! rasqal_literal_as_boolean(l1, &errs.e); rasqal_free_literal(l1); if(errs.e) goto failed; result = rasqal_new_boolean_literal(world, vars.b); break; case RASQAL_EXPR_STR_MATCH: case RASQAL_EXPR_STR_NMATCH: case RASQAL_EXPR_REGEX: result = rasqal_expression_evaluate_strmatch(e, eval_context, error_p); break; case RASQAL_EXPR_LITERAL: /* flatten any literal to a value as soon as possible - this * removes variables from expressions the first time they are seen. * (FLATTEN_LITERAL) */ result = rasqal_new_literal_from_literal(rasqal_literal_value(e->literal)); break; case RASQAL_EXPR_FUNCTION: rasqal_log_warning_simple(world, RASQAL_WARNING_LEVEL_NOT_IMPLEMENTED, eval_context->locator, "No function expressions support at present. Returning false."); result = rasqal_new_boolean_literal(world, 0); break; case RASQAL_EXPR_CAST: l1 = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); if(*error_p || !l1) goto failed; result = rasqal_literal_cast(l1, e->name, flags, &errs.e); rasqal_free_literal(l1); if(errs.e) goto failed; break; case RASQAL_EXPR_ORDER_COND_ASC: case RASQAL_EXPR_ORDER_COND_DESC: case RASQAL_EXPR_GROUP_COND_ASC: case RASQAL_EXPR_GROUP_COND_DESC: result = rasqal_expression_evaluate2(e->arg1, eval_context, error_p); break; case RASQAL_EXPR_COUNT: case RASQAL_EXPR_SUM: case RASQAL_EXPR_AVG: case RASQAL_EXPR_MIN: case RASQAL_EXPR_MAX: case RASQAL_EXPR_SAMPLE: case RASQAL_EXPR_GROUP_CONCAT: rasqal_log_error_simple(world, RAPTOR_LOG_LEVEL_ERROR, eval_context->locator, "Aggregate expressions cannot be evaluated in a general scalar expression."); errs.e = 1; goto failed; break; case RASQAL_EXPR_VARSTAR: /* constants */ break; case RASQAL_EXPR_SAMETERM: result = rasqal_expression_evaluate_sameterm(e, eval_context, error_p); break; case RASQAL_EXPR_CONCAT: result = rasqal_expression_evaluate_concat(e, eval_context, error_p); break; case RASQAL_EXPR_COALESCE: result = rasqal_expression_evaluate_coalesce(e, eval_context, error_p); break; case RASQAL_EXPR_IF: result = rasqal_expression_evaluate_if(e, eval_context, error_p); break; case RASQAL_EXPR_URI: case RASQAL_EXPR_IRI: result = rasqal_expression_evaluate_uri_constructor(e, eval_context, error_p); break; case RASQAL_EXPR_STRLANG: result = rasqal_expression_evaluate_strlang(e, eval_context, error_p); break; case RASQAL_EXPR_STRDT: result = rasqal_expression_evaluate_strdt(e, eval_context, error_p); break; case RASQAL_EXPR_BNODE: result = rasqal_expression_evaluate_bnode_constructor(e, eval_context, error_p); break; case RASQAL_EXPR_IN: result = rasqal_expression_evaluate_in_set(e, eval_context, error_p); break; case RASQAL_EXPR_NOT_IN: result = rasqal_expression_evaluate_in_set(e, eval_context, error_p); break; case RASQAL_EXPR_YEAR: case RASQAL_EXPR_MONTH: case RASQAL_EXPR_DAY: case RASQAL_EXPR_HOURS: case RASQAL_EXPR_MINUTES: case RASQAL_EXPR_SECONDS: result = rasqal_expression_evaluate_datetime_part(e, eval_context, error_p); break; case RASQAL_EXPR_CURRENT_DATETIME: case RASQAL_EXPR_NOW: result = rasqal_expression_evaluate_now(e, eval_context, error_p); break; case RASQAL_EXPR_TO_UNIXTIME: result = rasqal_expression_evaluate_to_unixtime(e, eval_context, error_p); break; case RASQAL_EXPR_FROM_UNIXTIME: result = rasqal_expression_evaluate_from_unixtime(e, eval_context, error_p); break; case RASQAL_EXPR_RAND: result = rasqal_expression_evaluate_rand(e, eval_context, error_p); break; case RASQAL_EXPR_STRLEN: result = rasqal_expression_evaluate_strlen(e, eval_context, error_p); break; case RASQAL_EXPR_UCASE: case RASQAL_EXPR_LCASE: result = rasqal_expression_evaluate_set_case(e, eval_context, error_p); break; case RASQAL_EXPR_STRSTARTS: case RASQAL_EXPR_STRENDS: case RASQAL_EXPR_CONTAINS: result = rasqal_expression_evaluate_str_prefix_suffix(e, eval_context, error_p); break; case RASQAL_EXPR_TIMEZONE: result = rasqal_expression_evaluate_datetime_timezone(e, eval_context, error_p); break; case RASQAL_EXPR_TZ: result = rasqal_expression_evaluate_datetime_tz(e, eval_context, error_p); break; case RASQAL_EXPR_ENCODE_FOR_URI: result = rasqal_expression_evaluate_encode_for_uri(e, eval_context, error_p); break; case RASQAL_EXPR_SUBSTR: result = rasqal_expression_evaluate_substr(e, eval_context, error_p); break; case RASQAL_EXPR_ABS: result = rasqal_expression_evaluate_abs(e, eval_context, error_p); break; case RASQAL_EXPR_ROUND: result = rasqal_expression_evaluate_round(e, eval_context, error_p); break; case RASQAL_EXPR_CEIL: result = rasqal_expression_evaluate_ceil(e, eval_context, error_p); break; case RASQAL_EXPR_FLOOR: result = rasqal_expression_evaluate_floor(e, eval_context, error_p); break; case RASQAL_EXPR_MD5: case RASQAL_EXPR_SHA1: case RASQAL_EXPR_SHA224: case RASQAL_EXPR_SHA256: case RASQAL_EXPR_SHA384: case RASQAL_EXPR_SHA512: result = rasqal_expression_evaluate_digest(e, eval_context, error_p); break; case RASQAL_EXPR_UNKNOWN: default: RASQAL_FATAL3("Unknown operation %s (%d)", rasqal_expression_op_label(e->op), e->op); } got_result: #ifdef RASQAL_DEBUG RASQAL_DEBUG2("result of %p: ", e); rasqal_expression_print(e, stderr); fputs( ": ", stderr); if(*error_p) fputs("FAILURE",stderr); else rasqal_literal_print(result, stderr); fputc('\n', stderr); #endif return result; failed: *error_p = 1; if(result) { rasqal_free_literal(result); result = NULL; } goto got_result; }
static void roqet_graph_pattern_walk(rasqal_graph_pattern *gp, int gp_index, FILE *fh, int indent) { int triple_index = 0; rasqal_graph_pattern_operator op; int seen; raptor_sequence *seq; int idx; rasqal_expression* expr; rasqal_variable* var; rasqal_literal* literal; op = rasqal_graph_pattern_get_operator(gp); roqet_write_indent(fh, indent); fprintf(fh, "%s graph pattern", rasqal_graph_pattern_operator_as_string(op)); idx = rasqal_graph_pattern_get_index(gp); if(idx >= 0) fprintf(fh, "[%d]", idx); if(gp_index >= 0) fprintf(fh, " #%d", gp_index); fputs(" {\n", fh); indent += 2; /* look for LET variable and value */ var = rasqal_graph_pattern_get_variable(gp); if(var) { roqet_write_indent(fh, indent); fprintf(fh, "%s := ", var->name); rasqal_expression_print(var->expression, fh); } /* look for GRAPH literal */ literal = rasqal_graph_pattern_get_origin(gp); if(literal) { roqet_write_indent(fh, indent); fputs("origin ", fh); rasqal_literal_print(literal, fh); fputc('\n', fh); } /* look for SERVICE literal */ literal = rasqal_graph_pattern_get_service(gp); if(literal) { roqet_write_indent(fh, indent); rasqal_literal_print(literal, fh); fputc('\n', fh); } /* look for triples */ seen = 0; while(1) { rasqal_triple* t; t = rasqal_graph_pattern_get_triple(gp, triple_index); if(!t) break; if(!seen) { roqet_write_indent(fh, indent); fputs("triples {\n", fh); seen = 1; } roqet_write_indent(fh, indent + 2); fprintf(fh, "triple #%d { ", triple_index); rasqal_triple_print(t, fh); fputs(" }\n", fh); triple_index++; } if(seen) { roqet_write_indent(fh, indent); fputs("}\n", fh); } /* look for sub-graph patterns */ seq = rasqal_graph_pattern_get_sub_graph_pattern_sequence(gp); if(seq && raptor_sequence_size(seq) > 0) { roqet_write_indent(fh, indent); fprintf(fh, "sub-graph patterns (%d) {\n", raptor_sequence_size(seq)); gp_index = 0; while(1) { rasqal_graph_pattern* sgp; sgp = rasqal_graph_pattern_get_sub_graph_pattern(gp, gp_index); if(!sgp) break; roqet_graph_pattern_walk(sgp, gp_index, fh, indent + 2); gp_index++; } roqet_write_indent(fh, indent); fputs("}\n", fh); } /* look for filter */ expr = rasqal_graph_pattern_get_filter_expression(gp); if(expr) { roqet_write_indent(fh, indent); fputs("filter { ", fh); rasqal_expression_print(expr, fh); fputs("}\n", fh); } indent -= 2; roqet_write_indent(fh, indent); fputs("}\n", fh); }