granicus.if.org Git - postgresql/blob - src/test/regress/regress.c

   1 /*
   2  * $Header: /cvsroot/pgsql/src/test/regress/regress.c,v 1.39 2000/06/11 20:07:44 tgl Exp $
   3  */
   4
   5 #include <float.h>                              /* faked on sunos */
   6
   7 #include "postgres.h"
   8
   9 #include "utils/geo_decls.h"    /* includes <math.h> */
  10 #include "executor/executor.h"  /* For GetAttributeByName */
  11 #include "commands/sequence.h"  /* for nextval() */
  12
  13 #define P_MAXDIG 12
  14 #define LDELIM                  '('
  15 #define RDELIM                  ')'
  16 #define DELIM                   ','
  17
  18 typedef TupleTableSlot *TUPLE;
  19
  20 extern double *regress_dist_ptpath(Point *pt, PATH *path);
  21 extern double *regress_path_dist(PATH *p1, PATH *p2);
  22 extern PATH *poly2path(POLYGON *poly);
  23 extern Point *interpt_pp(PATH *p1, PATH *p2);
  24 extern void regress_lseg_construct(LSEG *lseg, Point *pt1, Point *pt2);
  25 extern Datum overpaid(PG_FUNCTION_ARGS);
  26 extern int      boxarea(BOX *box);
  27 extern char *reverse_name(char *string);
  28
  29 /*
  30 ** Distance from a point to a path
  31 */
  32 double *
  33 regress_dist_ptpath(pt, path)
  34 Point      *pt;
  35 PATH       *path;
  36 {
  37         double     *result;
  38         double     *tmp;
  39         int                     i;
  40         LSEG            lseg;
  41
  42         switch (path->npts)
  43         {
  44                 case 0:
  45                         result = palloc(sizeof(double));
  46                         *result = Abs((double) DBL_MAX);        /* +infinity */
  47                         break;
  48                 case 1:
  49                         result = point_distance(pt, &path->p[0]);
  50                         break;
  51                 default:
  52
  53                         /*
  54                          * the distance from a point to a path is the smallest
  55                          * distance from the point to any of its constituent segments.
  56                          */
  57                         Assert(path->npts > 1);
  58                         result = palloc(sizeof(double));
  59                         for (i = 0; i < path->npts - 1; ++i)
  60                         {
  61                                 regress_lseg_construct(&lseg, &path->p[i], &path->p[i + 1]);
  62                                 tmp = dist_ps(pt, &lseg);
  63                                 if (i == 0 || *tmp < *result)
  64                                         *result = *tmp;
  65                                 pfree(tmp);
  66
  67                         }
  68                         break;
  69         }
  70         return result;
  71 }
  72
  73 /* this essentially does a cartesian product of the lsegs in the
  74    two paths, and finds the min distance between any two lsegs */
  75 double *
  76 regress_path_dist(p1, p2)
  77 PATH       *p1;
  78 PATH       *p2;
  79 {
  80         double     *min,
  81                            *tmp;
  82         int                     i,
  83                                 j;
  84         LSEG            seg1,
  85                                 seg2;
  86
  87         regress_lseg_construct(&seg1, &p1->p[0], &p1->p[1]);
  88         regress_lseg_construct(&seg2, &p2->p[0], &p2->p[1]);
  89         min = lseg_distance(&seg1, &seg2);
  90
  91         for (i = 0; i < p1->npts - 1; i++)
  92                 for (j = 0; j < p2->npts - 1; j++)
  93                 {
  94                         regress_lseg_construct(&seg1, &p1->p[i], &p1->p[i + 1]);
  95                         regress_lseg_construct(&seg2, &p2->p[j], &p2->p[j + 1]);
  96
  97                         if (*min < *(tmp = lseg_distance(&seg1, &seg2)))
  98                                 *min = *tmp;
  99                         pfree(tmp);
 100                 }
 101
 102         return min;
 103 }
 104
 105 PATH *
 106 poly2path(poly)
 107 POLYGON    *poly;
 108 {
 109         int                     i;
 110         char       *output = (char *) palloc(2 * (P_MAXDIG + 1) * poly->npts + 64);
 111         char            buf[2 * (P_MAXDIG) + 20];
 112
 113         sprintf(output, "(1, %*d", P_MAXDIG, poly->npts);
 114
 115         for (i = 0; i < poly->npts; i++)
 116         {
 117                 sprintf(buf, ",%*g,%*g", P_MAXDIG, poly->p[i].x, P_MAXDIG, poly->p[i].y);
 118                 strcat(output, buf);
 119         }
 120
 121         sprintf(buf, "%c", RDELIM);
 122         strcat(output, buf);
 123         return path_in(output);
 124 }
 125
 126 /* return the point where two paths intersect.  Assumes that they do. */
 127 Point *
 128 interpt_pp(p1, p2)
 129 PATH       *p1;
 130 PATH       *p2;
 131 {
 132
 133         Point      *retval;
 134         int                     i,
 135                                 j;
 136         LSEG            seg1,
 137                                 seg2;
 138
 139 #ifdef NOT_USED
 140         LINE       *ln;
 141
 142 #endif
 143         bool            found;                  /* We've found the intersection */
 144
 145         found = false;                          /* Haven't found it yet */
 146
 147         for (i = 0; i < p1->npts - 1 && !found; i++)
 148                 for (j = 0; j < p2->npts - 1 && !found; j++)
 149                 {
 150                         regress_lseg_construct(&seg1, &p1->p[i], &p1->p[i + 1]);
 151                         regress_lseg_construct(&seg2, &p2->p[j], &p2->p[j + 1]);
 152                         if (lseg_intersect(&seg1, &seg2))
 153                                 found = true;
 154                 }
 155
 156 #ifdef NOT_USED
 157         ln = line_construct_pp(&seg2.p[0], &seg2.p[1]);
 158         retval = interpt_sl(&seg1, ln);
 159 #endif
 160         retval = lseg_interpt(&seg1, &seg2);
 161
 162         return retval;
 163 }
 164
 165
 166 /* like lseg_construct, but assume space already allocated */
 167 void
 168 regress_lseg_construct(lseg, pt1, pt2)
 169 LSEG       *lseg;
 170 Point      *pt1;
 171 Point      *pt2;
 172 {
 173         lseg->p[0].x = pt1->x;
 174         lseg->p[0].y = pt1->y;
 175         lseg->p[1].x = pt2->x;
 176         lseg->p[1].y = pt2->y;
 177         lseg->m = point_sl(pt1, pt2);
 178 }
 179
 180 Datum
 181 overpaid(PG_FUNCTION_ARGS)
 182 {
 183         TUPLE           tuple = (TUPLE) PG_GETARG_POINTER(0);
 184         bool            isnull;
 185         long            salary;
 186
 187         salary = (long) GetAttributeByName(tuple, "salary", &isnull);
 188         if (isnull)
 189                 PG_RETURN_NULL();
 190         PG_RETURN_BOOL(salary > 699);
 191 }
 192
 193 /* New type "widget"
 194  * This used to be "circle", but I added circle to builtins,
 195  *      so needed to make sure the names do not collide. - tgl 97/04/21
 196  */
 197
 198 typedef struct
 199 {
 200         Point           center;
 201         double          radius;
 202 }                       WIDGET;
 203
 204 WIDGET     *widget_in(char *str);
 205 char       *widget_out(WIDGET * widget);
 206 int                     pt_in_widget(Point *point, WIDGET * widget);
 207
 208 #define NARGS   3
 209
 210 WIDGET *
 211 widget_in(str)
 212 char       *str;
 213 {
 214         char       *p,
 215                            *coord[NARGS],
 216                                 buf2[1000];
 217         int                     i;
 218         WIDGET     *result;
 219
 220         if (str == NULL)
 221                 return NULL;
 222         for (i = 0, p = str; *p && i < NARGS && *p != RDELIM; p++)
 223                 if (*p == ',' || (*p == LDELIM && !i))
 224                         coord[i++] = p + 1;
 225         if (i < NARGS - 1)
 226                 return NULL;
 227         result = (WIDGET *) palloc(sizeof(WIDGET));
 228         result->center.x = atof(coord[0]);
 229         result->center.y = atof(coord[1]);
 230         result->radius = atof(coord[2]);
 231
 232         sprintf(buf2, "widget_in: read (%f, %f, %f)\n", result->center.x,
 233                         result->center.y, result->radius);
 234         return result;
 235 }
 236
 237 char *
 238 widget_out(widget)
 239 WIDGET     *widget;
 240 {
 241         char       *result;
 242
 243         if (widget == NULL)
 244                 return NULL;
 245
 246         result = (char *) palloc(60);
 247         sprintf(result, "(%g,%g,%g)",
 248                         widget->center.x, widget->center.y, widget->radius);
 249         return result;
 250 }
 251
 252 int
 253 pt_in_widget(point, widget)
 254 Point      *point;
 255 WIDGET     *widget;
 256 {
 257         extern double point_dt();
 258
 259         return point_dt(point, &widget->center) < widget->radius;
 260 }
 261
 262 #define ABS(X) ((X) > 0 ? (X) : -(X))
 263
 264 int
 265 boxarea(box)
 266
 267 BOX                *box;
 268
 269 {
 270         int                     width,
 271                                 height;
 272
 273         width = ABS(box->high.x - box->low.x);
 274         height = ABS(box->high.y - box->low.y);
 275         return width * height;
 276 }
 277
 278 char *
 279 reverse_name(string)
 280 char       *string;
 281 {
 282         int                     i;
 283         int                     len;
 284         char       *new_string;
 285
 286         if (!(new_string = palloc(NAMEDATALEN)))
 287         {
 288                 fprintf(stderr, "reverse_name: palloc failed\n");
 289                 return NULL;
 290         }
 291         MemSet(new_string, 0, NAMEDATALEN);
 292         for (i = 0; i < NAMEDATALEN && string[i]; ++i)
 293                 ;
 294         if (i == NAMEDATALEN || !string[i])
 295                 --i;
 296         len = i;
 297         for (; i >= 0; --i)
 298                 new_string[len - i] = string[i];
 299         return new_string;
 300 }
 301
 302 #include "executor/spi.h"               /* this is what you need to work with SPI */
 303 #include "commands/trigger.h"   /* -"- and triggers */
 304
 305 static TransactionId fd17b_xid = InvalidTransactionId;
 306 static TransactionId fd17a_xid = InvalidTransactionId;
 307 static int      fd17b_level = 0;
 308 static int      fd17a_level = 0;
 309 static bool fd17b_recursion = true;
 310 static bool fd17a_recursion = true;
 311 extern Datum funny_dup17(PG_FUNCTION_ARGS);
 312
 313 Datum
 314 funny_dup17(PG_FUNCTION_ARGS)
 315 {
 316         TriggerData *trigdata = (TriggerData *) fcinfo->context;
 317         TransactionId *xid;
 318         int                *level;
 319         bool       *recursion;
 320         Relation        rel;
 321         TupleDesc       tupdesc;
 322         HeapTuple       tuple;
 323         char       *query,
 324                            *fieldval,
 325                            *fieldtype;
 326         char       *when;
 327         int                     inserted;
 328         int                     selected = 0;
 329         int                     ret;
 330
 331         if (!CALLED_AS_TRIGGER(fcinfo))
 332                 elog(ERROR, "funny_dup17: not fired by trigger manager");
 333
 334         tuple = trigdata->tg_trigtuple;
 335         rel = trigdata->tg_relation;
 336         tupdesc = rel->rd_att;
 337         if (TRIGGER_FIRED_BEFORE(trigdata->tg_event))
 338         {
 339                 xid = &fd17b_xid;
 340                 level = &fd17b_level;
 341                 recursion = &fd17b_recursion;
 342                 when = "BEFORE";
 343         }
 344         else
 345         {
 346                 xid = &fd17a_xid;
 347                 level = &fd17a_level;
 348                 recursion = &fd17a_recursion;
 349                 when = "AFTER ";
 350         }
 351
 352         if (!TransactionIdIsCurrentTransactionId(*xid))
 353         {
 354                 *xid = GetCurrentTransactionId();
 355                 *level = 0;
 356                 *recursion = true;
 357         }
 358
 359         if (*level == 17)
 360         {
 361                 *recursion = false;
 362                 return PointerGetDatum(tuple);
 363         }
 364
 365         if (!(*recursion))
 366                 return PointerGetDatum(tuple);
 367
 368         (*level)++;
 369
 370         SPI_connect();
 371
 372         fieldval = SPI_getvalue(tuple, tupdesc, 1);
 373         fieldtype = SPI_gettype(tupdesc, 1);
 374
 375         query = (char *) palloc(100 + NAMEDATALEN * 3 +
 376                                                         strlen(fieldval) + strlen(fieldtype));
 377
 378         sprintf(query, "insert into %s select * from %s where %s = '%s'::%s",
 379                         SPI_getrelname(rel), SPI_getrelname(rel),
 380                         SPI_fname(tupdesc, 1),
 381                         fieldval, fieldtype);
 382
 383         if ((ret = SPI_exec(query, 0)) < 0)
 384                 elog(ERROR, "funny_dup17 (fired %s) on level %3d: SPI_exec (insert ...) returned %d",
 385                          when, *level, ret);
 386
 387         inserted = SPI_processed;
 388
 389         sprintf(query, "select count (*) from %s where %s = '%s'::%s",
 390                         SPI_getrelname(rel),
 391                         SPI_fname(tupdesc, 1),
 392                         fieldval, fieldtype);
 393
 394         if ((ret = SPI_exec(query, 0)) < 0)
 395                 elog(ERROR, "funny_dup17 (fired %s) on level %3d: SPI_exec (select ...) returned %d",
 396                          when, *level, ret);
 397
 398         if (SPI_processed > 0)
 399         {
 400                 selected = DatumGetInt32(DirectFunctionCall1(int4in,
 401                                                                  CStringGetDatum(SPI_getvalue(
 402                                                                            SPI_tuptable->vals[0],
 403                                                                            SPI_tuptable->tupdesc,
 404                                                                            1
 405                                                                            ))));
 406         }
 407
 408         elog(NOTICE, "funny_dup17 (fired %s) on level %3d: %d/%d tuples inserted/selected",
 409                  when, *level, inserted, selected);
 410
 411         SPI_finish();
 412
 413         (*level)--;
 414
 415         if (*level == 0)
 416                 *xid = InvalidTransactionId;
 417
 418         return PointerGetDatum(tuple);
 419 }
 420
 421 extern Datum ttdummy(PG_FUNCTION_ARGS);
 422 int32           set_ttdummy(int32 on);
 423
 424 #define TTDUMMY_INFINITY        999999
 425
 426 static void *splan = NULL;
 427 static bool ttoff = false;
 428
 429 Datum
 430 ttdummy(PG_FUNCTION_ARGS)
 431 {
 432         TriggerData *trigdata = (TriggerData *) fcinfo->context;
 433         Trigger    *trigger;            /* to get trigger name */
 434         char      **args;                       /* arguments */
 435         int                     attnum[2];              /* fnumbers of start/stop columns */
 436         Datum           oldon,
 437                                 oldoff;
 438         Datum           newon,
 439                                 newoff;
 440         Datum      *cvals;                      /* column values */
 441         char       *cnulls;                     /* column nulls */
 442         char       *relname;            /* triggered relation name */
 443         Relation        rel;                    /* triggered relation */
 444         HeapTuple       trigtuple;
 445         HeapTuple       newtuple = NULL;
 446         HeapTuple       rettuple;
 447         TupleDesc       tupdesc;                /* tuple description */
 448         int                     natts;                  /* # of attributes */
 449         bool            isnull;                 /* to know is some column NULL or not */
 450         int                     ret;
 451         int                     i;
 452
 453         if (!CALLED_AS_TRIGGER(fcinfo))
 454                 elog(ERROR, "ttdummy: not fired by trigger manager");
 455         if (TRIGGER_FIRED_FOR_STATEMENT(trigdata->tg_event))
 456                 elog(ERROR, "ttdummy: can't process STATEMENT events");
 457         if (TRIGGER_FIRED_AFTER(trigdata->tg_event))
 458                 elog(ERROR, "ttdummy: must be fired before event");
 459         if (TRIGGER_FIRED_BY_INSERT(trigdata->tg_event))
 460                 elog(ERROR, "ttdummy: can't process INSERT event");
 461         if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
 462                 newtuple = trigdata->tg_newtuple;
 463
 464         trigtuple = trigdata->tg_trigtuple;
 465
 466         rel = trigdata->tg_relation;
 467         relname = SPI_getrelname(rel);
 468
 469         /* check if TT is OFF for this relation */
 470         if (ttoff)                                      /* OFF - nothing to do */
 471         {
 472                 pfree(relname);
 473                 return PointerGetDatum((newtuple != NULL) ? newtuple : trigtuple);
 474         }
 475
 476         trigger = trigdata->tg_trigger;
 477
 478         if (trigger->tgnargs != 2)
 479                 elog(ERROR, "ttdummy (%s): invalid (!= 2) number of arguments %d",
 480                          relname, trigger->tgnargs);
 481
 482         args = trigger->tgargs;
 483         tupdesc = rel->rd_att;
 484         natts = tupdesc->natts;
 485
 486         for (i = 0; i < 2; i++)
 487         {
 488                 attnum[i] = SPI_fnumber(tupdesc, args[i]);
 489                 if (attnum[i] < 0)
 490                         elog(ERROR, "ttdummy (%s): there is no attribute %s", relname, args[i]);
 491                 if (SPI_gettypeid(tupdesc, attnum[i]) != INT4OID)
 492                         elog(ERROR, "ttdummy (%s): attributes %s and %s must be of abstime type",
 493                                  relname, args[0], args[1]);
 494         }
 495
 496         oldon = SPI_getbinval(trigtuple, tupdesc, attnum[0], &isnull);
 497         if (isnull)
 498                 elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[0]);
 499
 500         oldoff = SPI_getbinval(trigtuple, tupdesc, attnum[1], &isnull);
 501         if (isnull)
 502                 elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[1]);
 503
 504         if (newtuple != NULL)           /* UPDATE */
 505         {
 506                 newon = SPI_getbinval(newtuple, tupdesc, attnum[0], &isnull);
 507                 if (isnull)
 508                         elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[0]);
 509                 newoff = SPI_getbinval(newtuple, tupdesc, attnum[1], &isnull);
 510                 if (isnull)
 511                         elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[1]);
 512
 513                 if (oldon != newon || oldoff != newoff)
 514                         elog(ERROR, "ttdummy (%s): you can't change %s and/or %s columns (use set_ttdummy)",
 515                                  relname, args[0], args[1]);
 516
 517                 if (newoff != TTDUMMY_INFINITY)
 518                 {
 519                         pfree(relname);         /* allocated in upper executor context */
 520                         return PointerGetDatum(NULL);
 521                 }
 522         }
 523         else if (oldoff != TTDUMMY_INFINITY)            /* DELETE */
 524         {
 525                 pfree(relname);
 526                 return PointerGetDatum(NULL);
 527         }
 528
 529         {
 530                 text   *seqname = textin("ttdummy_seq");
 531
 532                 newoff = DirectFunctionCall1(nextval,
 533                                                                          PointerGetDatum(seqname));
 534                 pfree(seqname);
 535         }
 536
 537         /* Connect to SPI manager */
 538         if ((ret = SPI_connect()) < 0)
 539                 elog(ERROR, "ttdummy (%s): SPI_connect returned %d", relname, ret);
 540
 541         /* Fetch tuple values and nulls */
 542         cvals = (Datum *) palloc(natts * sizeof(Datum));
 543         cnulls = (char *) palloc(natts * sizeof(char));
 544         for (i = 0; i < natts; i++)
 545         {
 546                 cvals[i] = SPI_getbinval((newtuple != NULL) ? newtuple : trigtuple,
 547                                                                  tupdesc, i + 1, &isnull);
 548                 cnulls[i] = (isnull) ? 'n' : ' ';
 549         }
 550
 551         /* change date column(s) */
 552         if (newtuple)                           /* UPDATE */
 553         {
 554                 cvals[attnum[0] - 1] = newoff;  /* start_date eq current date */
 555                 cnulls[attnum[0] - 1] = ' ';
 556                 cvals[attnum[1] - 1] = TTDUMMY_INFINITY;                /* stop_date eq INFINITY */
 557                 cnulls[attnum[1] - 1] = ' ';
 558         }
 559         else
 560 /* DELETE */
 561         {
 562                 cvals[attnum[1] - 1] = newoff;  /* stop_date eq current date */
 563                 cnulls[attnum[1] - 1] = ' ';
 564         }
 565
 566         /* if there is no plan ... */
 567         if (splan == NULL)
 568         {
 569                 void       *pplan;
 570                 Oid                *ctypes;
 571                 char       *query;
 572
 573                 /* allocate space in preparation */
 574                 ctypes = (Oid *) palloc(natts * sizeof(Oid));
 575                 query = (char *) palloc(100 + 16 * natts);
 576
 577                 /*
 578                  * Construct query: INSERT INTO _relation_ VALUES ($1, ...)
 579                  */
 580                 sprintf(query, "INSERT INTO %s VALUES (", relname);
 581                 for (i = 1; i <= natts; i++)
 582                 {
 583                         sprintf(query + strlen(query), "$%d%s",
 584                                         i, (i < natts) ? ", " : ")");
 585                         ctypes[i - 1] = SPI_gettypeid(tupdesc, i);
 586                 }
 587
 588                 /* Prepare plan for query */
 589                 pplan = SPI_prepare(query, natts, ctypes);
 590                 if (pplan == NULL)
 591                         elog(ERROR, "ttdummy (%s): SPI_prepare returned %d", relname, SPI_result);
 592
 593                 pplan = SPI_saveplan(pplan);
 594                 if (pplan == NULL)
 595                         elog(ERROR, "ttdummy (%s): SPI_saveplan returned %d", relname, SPI_result);
 596
 597                 splan = pplan;
 598         }
 599
 600         ret = SPI_execp(splan, cvals, cnulls, 0);
 601
 602         if (ret < 0)
 603                 elog(ERROR, "ttdummy (%s): SPI_execp returned %d", relname, ret);
 604
 605         /* Tuple to return to upper Executor ... */
 606         if (newtuple)                           /* UPDATE */
 607         {
 608                 HeapTuple       tmptuple;
 609
 610                 tmptuple = SPI_copytuple(trigtuple);
 611                 rettuple = SPI_modifytuple(rel, tmptuple, 1, &(attnum[1]), &newoff, NULL);
 612                 SPI_freetuple(tmptuple);
 613         }
 614         else
 615 /* DELETE */
 616                 rettuple = trigtuple;
 617
 618         SPI_finish();                           /* don't forget say Bye to SPI mgr */
 619
 620         pfree(relname);
 621
 622         return PointerGetDatum(rettuple);
 623 }
 624
 625 int32
 626 set_ttdummy(int32 on)
 627 {
 628
 629         if (ttoff)                                      /* OFF currently */
 630         {
 631                 if (on == 0)
 632                         return 0;
 633
 634                 /* turn ON */
 635                 ttoff = false;
 636                 return 0;
 637         }
 638
 639         /* ON currently */
 640         if (on != 0)
 641                 return 1;
 642
 643         /* turn OFF */
 644         ttoff = true;
 645
 646         return 1;
 647
 648 }