Fix obsolete comment regarding FSM truncation.
[PostgreSQL.git] / src / test / regress / regress.c
blob601c687a4fc4a4ef8a87025a9790d4f0bc38a011
1 /*
2 * $PostgreSQL$
3 */
5 #include "postgres.h"
7 #include <float.h> /* faked on sunos */
9 #include "access/transam.h"
10 #include "utils/geo_decls.h" /* includes <math.h> */
11 #include "executor/executor.h" /* For GetAttributeByName */
12 #include "commands/sequence.h" /* for nextval() */
14 #define P_MAXDIG 12
15 #define LDELIM '('
16 #define RDELIM ')'
17 #define DELIM ','
19 extern Datum regress_dist_ptpath(PG_FUNCTION_ARGS);
20 extern Datum regress_path_dist(PG_FUNCTION_ARGS);
21 extern PATH *poly2path(POLYGON *poly);
22 extern Datum interpt_pp(PG_FUNCTION_ARGS);
23 extern void regress_lseg_construct(LSEG *lseg, Point *pt1, Point *pt2);
24 extern Datum overpaid(PG_FUNCTION_ARGS);
25 extern Datum boxarea(PG_FUNCTION_ARGS);
26 extern char *reverse_name(char *string);
27 extern int oldstyle_length(int n, text *t);
28 extern Datum int44in(PG_FUNCTION_ARGS);
29 extern Datum int44out(PG_FUNCTION_ARGS);
31 #ifdef PG_MODULE_MAGIC
32 PG_MODULE_MAGIC;
33 #endif
37 * Distance from a point to a path
39 PG_FUNCTION_INFO_V1(regress_dist_ptpath);
41 Datum
42 regress_dist_ptpath(PG_FUNCTION_ARGS)
44 Point *pt = PG_GETARG_POINT_P(0);
45 PATH *path = PG_GETARG_PATH_P(1);
46 float8 result = 0.0; /* keep compiler quiet */
47 float8 tmp;
48 int i;
49 LSEG lseg;
51 switch (path->npts)
53 case 0:
54 PG_RETURN_NULL();
55 case 1:
56 result = point_dt(pt, &path->p[0]);
57 break;
58 default:
61 * the distance from a point to a path is the smallest distance
62 * from the point to any of its constituent segments.
64 Assert(path->npts > 1);
65 for (i = 0; i < path->npts - 1; ++i)
67 regress_lseg_construct(&lseg, &path->p[i], &path->p[i + 1]);
68 tmp = DatumGetFloat8(DirectFunctionCall2(dist_ps,
69 PointPGetDatum(pt),
70 LsegPGetDatum(&lseg)));
71 if (i == 0 || tmp < result)
72 result = tmp;
74 break;
76 PG_RETURN_FLOAT8(result);
80 * this essentially does a cartesian product of the lsegs in the
81 * two paths, and finds the min distance between any two lsegs
83 PG_FUNCTION_INFO_V1(regress_path_dist);
85 Datum
86 regress_path_dist(PG_FUNCTION_ARGS)
88 PATH *p1 = PG_GETARG_PATH_P(0);
89 PATH *p2 = PG_GETARG_PATH_P(1);
90 bool have_min = false;
91 float8 min = 0.0; /* initialize to keep compiler quiet */
92 float8 tmp;
93 int i,
95 LSEG seg1,
96 seg2;
98 for (i = 0; i < p1->npts - 1; i++)
100 for (j = 0; j < p2->npts - 1; j++)
102 regress_lseg_construct(&seg1, &p1->p[i], &p1->p[i + 1]);
103 regress_lseg_construct(&seg2, &p2->p[j], &p2->p[j + 1]);
105 tmp = DatumGetFloat8(DirectFunctionCall2(lseg_distance,
106 LsegPGetDatum(&seg1),
107 LsegPGetDatum(&seg2)));
108 if (!have_min || tmp < min)
110 min = tmp;
111 have_min = true;
116 if (!have_min)
117 PG_RETURN_NULL();
119 PG_RETURN_FLOAT8(min);
122 PATH *
123 poly2path(POLYGON *poly)
125 int i;
126 char *output = (char *) palloc(2 * (P_MAXDIG + 1) * poly->npts + 64);
127 char buf[2 * (P_MAXDIG) + 20];
129 sprintf(output, "(1, %*d", P_MAXDIG, poly->npts);
131 for (i = 0; i < poly->npts; i++)
133 snprintf(buf, sizeof(buf), ",%*g,%*g",
134 P_MAXDIG, poly->p[i].x, P_MAXDIG, poly->p[i].y);
135 strcat(output, buf);
138 snprintf(buf, sizeof(buf), "%c", RDELIM);
139 strcat(output, buf);
140 return DatumGetPathP(DirectFunctionCall1(path_in,
141 CStringGetDatum(output)));
144 /* return the point where two paths intersect, or NULL if no intersection. */
145 PG_FUNCTION_INFO_V1(interpt_pp);
147 Datum
148 interpt_pp(PG_FUNCTION_ARGS)
150 PATH *p1 = PG_GETARG_PATH_P(0);
151 PATH *p2 = PG_GETARG_PATH_P(1);
152 int i,
154 LSEG seg1,
155 seg2;
156 bool found; /* We've found the intersection */
158 found = false; /* Haven't found it yet */
160 for (i = 0; i < p1->npts - 1 && !found; i++)
162 regress_lseg_construct(&seg1, &p1->p[i], &p1->p[i + 1]);
163 for (j = 0; j < p2->npts - 1 && !found; j++)
165 regress_lseg_construct(&seg2, &p2->p[j], &p2->p[j + 1]);
166 if (DatumGetBool(DirectFunctionCall2(lseg_intersect,
167 LsegPGetDatum(&seg1),
168 LsegPGetDatum(&seg2))))
169 found = true;
173 if (!found)
174 PG_RETURN_NULL();
177 * Note: DirectFunctionCall2 will kick out an error if lseg_interpt()
178 * returns NULL, but that should be impossible since we know the two
179 * segments intersect.
181 PG_RETURN_DATUM(DirectFunctionCall2(lseg_interpt,
182 LsegPGetDatum(&seg1),
183 LsegPGetDatum(&seg2)));
187 /* like lseg_construct, but assume space already allocated */
188 void
189 regress_lseg_construct(LSEG *lseg, Point *pt1, Point *pt2)
191 lseg->p[0].x = pt1->x;
192 lseg->p[0].y = pt1->y;
193 lseg->p[1].x = pt2->x;
194 lseg->p[1].y = pt2->y;
195 lseg->m = point_sl(pt1, pt2);
198 PG_FUNCTION_INFO_V1(overpaid);
200 Datum
201 overpaid(PG_FUNCTION_ARGS)
203 HeapTupleHeader tuple = PG_GETARG_HEAPTUPLEHEADER(0);
204 bool isnull;
205 int32 salary;
207 salary = DatumGetInt32(GetAttributeByName(tuple, "salary", &isnull));
208 if (isnull)
209 PG_RETURN_NULL();
210 PG_RETURN_BOOL(salary > 699);
213 /* New type "widget"
214 * This used to be "circle", but I added circle to builtins,
215 * so needed to make sure the names do not collide. - tgl 97/04/21
218 typedef struct
220 Point center;
221 double radius;
222 } WIDGET;
224 WIDGET *widget_in(char *str);
225 char *widget_out(WIDGET * widget);
226 extern Datum pt_in_widget(PG_FUNCTION_ARGS);
228 #define NARGS 3
230 WIDGET *
231 widget_in(char *str)
233 char *p,
234 *coord[NARGS],
235 buf2[1000];
236 int i;
237 WIDGET *result;
239 if (str == NULL)
240 return NULL;
241 for (i = 0, p = str; *p && i < NARGS && *p != RDELIM; p++)
242 if (*p == ',' || (*p == LDELIM && !i))
243 coord[i++] = p + 1;
244 if (i < NARGS - 1)
245 return NULL;
246 result = (WIDGET *) palloc(sizeof(WIDGET));
247 result->center.x = atof(coord[0]);
248 result->center.y = atof(coord[1]);
249 result->radius = atof(coord[2]);
251 snprintf(buf2, sizeof(buf2), "widget_in: read (%f, %f, %f)\n",
252 result->center.x, result->center.y, result->radius);
253 return result;
256 char *
257 widget_out(WIDGET * widget)
259 char *result;
261 if (widget == NULL)
262 return NULL;
264 result = (char *) palloc(60);
265 sprintf(result, "(%g,%g,%g)",
266 widget->center.x, widget->center.y, widget->radius);
267 return result;
270 PG_FUNCTION_INFO_V1(pt_in_widget);
272 Datum
273 pt_in_widget(PG_FUNCTION_ARGS)
275 Point *point = PG_GETARG_POINT_P(0);
276 WIDGET *widget = (WIDGET *) PG_GETARG_POINTER(1);
278 PG_RETURN_BOOL(point_dt(point, &widget->center) < widget->radius);
281 PG_FUNCTION_INFO_V1(boxarea);
283 Datum
284 boxarea(PG_FUNCTION_ARGS)
286 BOX *box = PG_GETARG_BOX_P(0);
287 double width,
288 height;
290 width = Abs(box->high.x - box->low.x);
291 height = Abs(box->high.y - box->low.y);
292 PG_RETURN_FLOAT8(width * height);
295 char *
296 reverse_name(char *string)
298 int i;
299 int len;
300 char *new_string;
302 new_string = palloc0(NAMEDATALEN);
303 for (i = 0; i < NAMEDATALEN && string[i]; ++i)
305 if (i == NAMEDATALEN || !string[i])
306 --i;
307 len = i;
308 for (; i >= 0; --i)
309 new_string[len - i] = string[i];
310 return new_string;
314 * This rather silly function is just to test that oldstyle functions
315 * work correctly on toast-able inputs.
318 oldstyle_length(int n, text *t)
320 int len = 0;
322 if (t)
323 len = VARSIZE(t) - VARHDRSZ;
325 return n + len;
328 #include "executor/spi.h" /* this is what you need to work with SPI */
329 #include "commands/trigger.h" /* -"- and triggers */
331 static TransactionId fd17b_xid = InvalidTransactionId;
332 static TransactionId fd17a_xid = InvalidTransactionId;
333 static int fd17b_level = 0;
334 static int fd17a_level = 0;
335 static bool fd17b_recursion = true;
336 static bool fd17a_recursion = true;
337 extern Datum funny_dup17(PG_FUNCTION_ARGS);
339 PG_FUNCTION_INFO_V1(funny_dup17);
341 Datum
342 funny_dup17(PG_FUNCTION_ARGS)
344 TriggerData *trigdata = (TriggerData *) fcinfo->context;
345 TransactionId *xid;
346 int *level;
347 bool *recursion;
348 Relation rel;
349 TupleDesc tupdesc;
350 HeapTuple tuple;
351 char *query,
352 *fieldval,
353 *fieldtype;
354 char *when;
355 int inserted;
356 int selected = 0;
357 int ret;
359 if (!CALLED_AS_TRIGGER(fcinfo))
360 elog(ERROR, "funny_dup17: not fired by trigger manager");
362 tuple = trigdata->tg_trigtuple;
363 rel = trigdata->tg_relation;
364 tupdesc = rel->rd_att;
365 if (TRIGGER_FIRED_BEFORE(trigdata->tg_event))
367 xid = &fd17b_xid;
368 level = &fd17b_level;
369 recursion = &fd17b_recursion;
370 when = "BEFORE";
372 else
374 xid = &fd17a_xid;
375 level = &fd17a_level;
376 recursion = &fd17a_recursion;
377 when = "AFTER ";
380 if (!TransactionIdIsCurrentTransactionId(*xid))
382 *xid = GetCurrentTransactionId();
383 *level = 0;
384 *recursion = true;
387 if (*level == 17)
389 *recursion = false;
390 return PointerGetDatum(tuple);
393 if (!(*recursion))
394 return PointerGetDatum(tuple);
396 (*level)++;
398 SPI_connect();
400 fieldval = SPI_getvalue(tuple, tupdesc, 1);
401 fieldtype = SPI_gettype(tupdesc, 1);
403 query = (char *) palloc(100 + NAMEDATALEN * 3 +
404 strlen(fieldval) + strlen(fieldtype));
406 sprintf(query, "insert into %s select * from %s where %s = '%s'::%s",
407 SPI_getrelname(rel), SPI_getrelname(rel),
408 SPI_fname(tupdesc, 1),
409 fieldval, fieldtype);
411 if ((ret = SPI_exec(query, 0)) < 0)
412 elog(ERROR, "funny_dup17 (fired %s) on level %3d: SPI_exec (insert ...) returned %d",
413 when, *level, ret);
415 inserted = SPI_processed;
417 sprintf(query, "select count (*) from %s where %s = '%s'::%s",
418 SPI_getrelname(rel),
419 SPI_fname(tupdesc, 1),
420 fieldval, fieldtype);
422 if ((ret = SPI_exec(query, 0)) < 0)
423 elog(ERROR, "funny_dup17 (fired %s) on level %3d: SPI_exec (select ...) returned %d",
424 when, *level, ret);
426 if (SPI_processed > 0)
428 selected = DatumGetInt32(DirectFunctionCall1(int4in,
429 CStringGetDatum(SPI_getvalue(
430 SPI_tuptable->vals[0],
431 SPI_tuptable->tupdesc,
433 ))));
436 elog(DEBUG4, "funny_dup17 (fired %s) on level %3d: %d/%d tuples inserted/selected",
437 when, *level, inserted, selected);
439 SPI_finish();
441 (*level)--;
443 if (*level == 0)
444 *xid = InvalidTransactionId;
446 return PointerGetDatum(tuple);
449 extern Datum ttdummy(PG_FUNCTION_ARGS);
450 extern Datum set_ttdummy(PG_FUNCTION_ARGS);
452 #define TTDUMMY_INFINITY 999999
454 static SPIPlanPtr splan = NULL;
455 static bool ttoff = false;
457 PG_FUNCTION_INFO_V1(ttdummy);
459 Datum
460 ttdummy(PG_FUNCTION_ARGS)
462 TriggerData *trigdata = (TriggerData *) fcinfo->context;
463 Trigger *trigger; /* to get trigger name */
464 char **args; /* arguments */
465 int attnum[2]; /* fnumbers of start/stop columns */
466 Datum oldon,
467 oldoff;
468 Datum newon,
469 newoff;
470 Datum *cvals; /* column values */
471 char *cnulls; /* column nulls */
472 char *relname; /* triggered relation name */
473 Relation rel; /* triggered relation */
474 HeapTuple trigtuple;
475 HeapTuple newtuple = NULL;
476 HeapTuple rettuple;
477 TupleDesc tupdesc; /* tuple description */
478 int natts; /* # of attributes */
479 bool isnull; /* to know is some column NULL or not */
480 int ret;
481 int i;
483 if (!CALLED_AS_TRIGGER(fcinfo))
484 elog(ERROR, "ttdummy: not fired by trigger manager");
485 if (TRIGGER_FIRED_FOR_STATEMENT(trigdata->tg_event))
486 elog(ERROR, "ttdummy: cannot process STATEMENT events");
487 if (TRIGGER_FIRED_AFTER(trigdata->tg_event))
488 elog(ERROR, "ttdummy: must be fired before event");
489 if (TRIGGER_FIRED_BY_INSERT(trigdata->tg_event))
490 elog(ERROR, "ttdummy: cannot process INSERT event");
491 if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
492 newtuple = trigdata->tg_newtuple;
494 trigtuple = trigdata->tg_trigtuple;
496 rel = trigdata->tg_relation;
497 relname = SPI_getrelname(rel);
499 /* check if TT is OFF for this relation */
500 if (ttoff) /* OFF - nothing to do */
502 pfree(relname);
503 return PointerGetDatum((newtuple != NULL) ? newtuple : trigtuple);
506 trigger = trigdata->tg_trigger;
508 if (trigger->tgnargs != 2)
509 elog(ERROR, "ttdummy (%s): invalid (!= 2) number of arguments %d",
510 relname, trigger->tgnargs);
512 args = trigger->tgargs;
513 tupdesc = rel->rd_att;
514 natts = tupdesc->natts;
516 for (i = 0; i < 2; i++)
518 attnum[i] = SPI_fnumber(tupdesc, args[i]);
519 if (attnum[i] < 0)
520 elog(ERROR, "ttdummy (%s): there is no attribute %s", relname, args[i]);
521 if (SPI_gettypeid(tupdesc, attnum[i]) != INT4OID)
522 elog(ERROR, "ttdummy (%s): attributes %s and %s must be of abstime type",
523 relname, args[0], args[1]);
526 oldon = SPI_getbinval(trigtuple, tupdesc, attnum[0], &isnull);
527 if (isnull)
528 elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[0]);
530 oldoff = SPI_getbinval(trigtuple, tupdesc, attnum[1], &isnull);
531 if (isnull)
532 elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[1]);
534 if (newtuple != NULL) /* UPDATE */
536 newon = SPI_getbinval(newtuple, tupdesc, attnum[0], &isnull);
537 if (isnull)
538 elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[0]);
539 newoff = SPI_getbinval(newtuple, tupdesc, attnum[1], &isnull);
540 if (isnull)
541 elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[1]);
543 if (oldon != newon || oldoff != newoff)
544 elog(ERROR, "ttdummy (%s): you cannot change %s and/or %s columns (use set_ttdummy)",
545 relname, args[0], args[1]);
547 if (newoff != TTDUMMY_INFINITY)
549 pfree(relname); /* allocated in upper executor context */
550 return PointerGetDatum(NULL);
553 else if (oldoff != TTDUMMY_INFINITY) /* DELETE */
555 pfree(relname);
556 return PointerGetDatum(NULL);
559 newoff = DirectFunctionCall1(nextval, CStringGetTextDatum("ttdummy_seq"));
560 /* nextval now returns int64; coerce down to int32 */
561 newoff = Int32GetDatum((int32) DatumGetInt64(newoff));
563 /* Connect to SPI manager */
564 if ((ret = SPI_connect()) < 0)
565 elog(ERROR, "ttdummy (%s): SPI_connect returned %d", relname, ret);
567 /* Fetch tuple values and nulls */
568 cvals = (Datum *) palloc(natts * sizeof(Datum));
569 cnulls = (char *) palloc(natts * sizeof(char));
570 for (i = 0; i < natts; i++)
572 cvals[i] = SPI_getbinval((newtuple != NULL) ? newtuple : trigtuple,
573 tupdesc, i + 1, &isnull);
574 cnulls[i] = (isnull) ? 'n' : ' ';
577 /* change date column(s) */
578 if (newtuple) /* UPDATE */
580 cvals[attnum[0] - 1] = newoff; /* start_date eq current date */
581 cnulls[attnum[0] - 1] = ' ';
582 cvals[attnum[1] - 1] = TTDUMMY_INFINITY; /* stop_date eq INFINITY */
583 cnulls[attnum[1] - 1] = ' ';
585 else
586 /* DELETE */
588 cvals[attnum[1] - 1] = newoff; /* stop_date eq current date */
589 cnulls[attnum[1] - 1] = ' ';
592 /* if there is no plan ... */
593 if (splan == NULL)
595 SPIPlanPtr pplan;
596 Oid *ctypes;
597 char *query;
599 /* allocate space in preparation */
600 ctypes = (Oid *) palloc(natts * sizeof(Oid));
601 query = (char *) palloc(100 + 16 * natts);
604 * Construct query: INSERT INTO _relation_ VALUES ($1, ...)
606 sprintf(query, "INSERT INTO %s VALUES (", relname);
607 for (i = 1; i <= natts; i++)
609 sprintf(query + strlen(query), "$%d%s",
610 i, (i < natts) ? ", " : ")");
611 ctypes[i - 1] = SPI_gettypeid(tupdesc, i);
614 /* Prepare plan for query */
615 pplan = SPI_prepare(query, natts, ctypes);
616 if (pplan == NULL)
617 elog(ERROR, "ttdummy (%s): SPI_prepare returned %d", relname, SPI_result);
619 pplan = SPI_saveplan(pplan);
620 if (pplan == NULL)
621 elog(ERROR, "ttdummy (%s): SPI_saveplan returned %d", relname, SPI_result);
623 splan = pplan;
626 ret = SPI_execp(splan, cvals, cnulls, 0);
628 if (ret < 0)
629 elog(ERROR, "ttdummy (%s): SPI_execp returned %d", relname, ret);
631 /* Tuple to return to upper Executor ... */
632 if (newtuple) /* UPDATE */
634 HeapTuple tmptuple;
636 tmptuple = SPI_copytuple(trigtuple);
637 rettuple = SPI_modifytuple(rel, tmptuple, 1, &(attnum[1]), &newoff, NULL);
638 SPI_freetuple(tmptuple);
640 else
641 /* DELETE */
642 rettuple = trigtuple;
644 SPI_finish(); /* don't forget say Bye to SPI mgr */
646 pfree(relname);
648 return PointerGetDatum(rettuple);
651 PG_FUNCTION_INFO_V1(set_ttdummy);
653 Datum
654 set_ttdummy(PG_FUNCTION_ARGS)
656 int32 on = PG_GETARG_INT32(0);
658 if (ttoff) /* OFF currently */
660 if (on == 0)
661 PG_RETURN_INT32(0);
663 /* turn ON */
664 ttoff = false;
665 PG_RETURN_INT32(0);
668 /* ON currently */
669 if (on != 0)
670 PG_RETURN_INT32(1);
672 /* turn OFF */
673 ttoff = true;
675 PG_RETURN_INT32(1);
680 * Type int44 has no real-world use, but the regression tests use it.
681 * It's a four-element vector of int4's.
685 * int44in - converts "num num ..." to internal form
687 * Note: Fills any missing positions with zeroes.
689 PG_FUNCTION_INFO_V1(int44in);
691 Datum
692 int44in(PG_FUNCTION_ARGS)
694 char *input_string = PG_GETARG_CSTRING(0);
695 int32 *result = (int32 *) palloc(4 * sizeof(int32));
696 int i;
698 i = sscanf(input_string,
699 "%d, %d, %d, %d",
700 &result[0],
701 &result[1],
702 &result[2],
703 &result[3]);
704 while (i < 4)
705 result[i++] = 0;
707 PG_RETURN_POINTER(result);
711 * int44out - converts internal form to "num num ..."
713 PG_FUNCTION_INFO_V1(int44out);
715 Datum
716 int44out(PG_FUNCTION_ARGS)
718 int32 *an_array = (int32 *) PG_GETARG_POINTER(0);
719 char *result = (char *) palloc(16 * 4); /* Allow 14 digits +
720 * sign */
721 int i;
722 char *walk;
724 walk = result;
725 for (i = 0; i < 4; i++)
727 pg_ltoa(an_array[i], walk);
728 while (*++walk != '\0')
730 *walk++ = ' ';
732 *--walk = '\0';
733 PG_RETURN_CSTRING(result);