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

   1 /*
   2  * $PostgreSQL: pgsql/src/test/regress/regress.c,v 1.68 2006/07/13 16:49:20 momjian Exp $
   3  */
   4
   5 #include "postgres.h"
   6
   7 #include <float.h>                              /* faked on sunos */
   8
   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() */
  13
  14 #define P_MAXDIG 12
  15 #define LDELIM                  '('
  16 #define RDELIM                  ')'
  17 #define DELIM                   ','
  18
  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);
  30
  31 #ifdef PG_MODULE_MAGIC
  32 PG_MODULE_MAGIC;
  33 #endif
  34
  35
  36 /*
  37  * Distance from a point to a path
  38  */
  39 PG_FUNCTION_INFO_V1(regress_dist_ptpath);
  40
  41 Datum
  42 regress_dist_ptpath(PG_FUNCTION_ARGS)
  43 {
  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;
  50
  51         switch (path->npts)
  52         {
  53                 case 0:
  54                         PG_RETURN_NULL();
  55                 case 1:
  56                         result = point_dt(pt, &path->p[0]);
  57                         break;
  58                 default:
  59
  60                         /*
  61                          * the distance from a point to a path is the smallest distance
  62                          * from the point to any of its constituent segments.
  63                          */
  64                         Assert(path->npts > 1);
  65                         for (i = 0; i < path->npts - 1; ++i)
  66                         {
  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;
  73                         }
  74                         break;
  75         }
  76         PG_RETURN_FLOAT8(result);
  77 }
  78
  79 /*
  80  * this essentially does a cartesian product of the lsegs in the
  81  * two paths, and finds the min distance between any two lsegs
  82  */
  83 PG_FUNCTION_INFO_V1(regress_path_dist);
  84
  85 Datum
  86 regress_path_dist(PG_FUNCTION_ARGS)
  87 {
  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,
  94                                 j;
  95         LSEG            seg1,
  96                                 seg2;
  97
  98         for (i = 0; i < p1->npts - 1; i++)
  99         {
 100                 for (j = 0; j < p2->npts - 1; j++)
 101                 {
 102                         regress_lseg_construct(&seg1, &p1->p[i], &p1->p[i + 1]);
 103                         regress_lseg_construct(&seg2, &p2->p[j], &p2->p[j + 1]);
 104
 105                         tmp = DatumGetFloat8(DirectFunctionCall2(lseg_distance,
 106                                                                                                          LsegPGetDatum(&seg1),
 107                                                                                                          LsegPGetDatum(&seg2)));
 108                         if (!have_min || tmp < min)
 109                         {
 110                                 min = tmp;
 111                                 have_min = true;
 112                         }
 113                 }
 114         }
 115
 116         if (!have_min)
 117                 PG_RETURN_NULL();
 118
 119         PG_RETURN_FLOAT8(min);
 120 }
 121
 122 PATH *
 123 poly2path(POLYGON *poly)
 124 {
 125         int                     i;
 126         char       *output = (char *) palloc(2 * (P_MAXDIG + 1) * poly->npts + 64);
 127         char            buf[2 * (P_MAXDIG) + 20];
 128
 129         sprintf(output, "(1, %*d", P_MAXDIG, poly->npts);
 130
 131         for (i = 0; i < poly->npts; i++)
 132         {
 133                 snprintf(buf, sizeof(buf), ",%*g,%*g",
 134                                  P_MAXDIG, poly->p[i].x, P_MAXDIG, poly->p[i].y);
 135                 strcat(output, buf);
 136         }
 137
 138         snprintf(buf, sizeof(buf), "%c", RDELIM);
 139         strcat(output, buf);
 140         return DatumGetPathP(DirectFunctionCall1(path_in,
 141                                                                                          CStringGetDatum(output)));
 142 }
 143
 144 /* return the point where two paths intersect, or NULL if no intersection. */
 145 PG_FUNCTION_INFO_V1(interpt_pp);
 146
 147 Datum
 148 interpt_pp(PG_FUNCTION_ARGS)
 149 {
 150         PATH       *p1 = PG_GETARG_PATH_P(0);
 151         PATH       *p2 = PG_GETARG_PATH_P(1);
 152         int                     i,
 153                                 j;
 154         LSEG            seg1,
 155                                 seg2;
 156         bool            found;                  /* We've found the intersection */
 157
 158         found = false;                          /* Haven't found it yet */
 159
 160         for (i = 0; i < p1->npts - 1 && !found; i++)
 161         {
 162                 regress_lseg_construct(&seg1, &p1->p[i], &p1->p[i + 1]);
 163                 for (j = 0; j < p2->npts - 1 && !found; j++)
 164                 {
 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;
 170                 }
 171         }
 172
 173         if (!found)
 174                 PG_RETURN_NULL();
 175
 176         /*
 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.
 180          */
 181         PG_RETURN_DATUM(DirectFunctionCall2(lseg_interpt,
 182                                                                                 LsegPGetDatum(&seg1),
 183                                                                                 LsegPGetDatum(&seg2)));
 184 }
 185
 186
 187 /* like lseg_construct, but assume space already allocated */
 188 void
 189 regress_lseg_construct(LSEG *lseg, Point *pt1, Point *pt2)
 190 {
 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);
 196 }
 197
 198 PG_FUNCTION_INFO_V1(overpaid);
 199
 200 Datum
 201 overpaid(PG_FUNCTION_ARGS)
 202 {
 203         HeapTupleHeader tuple = PG_GETARG_HEAPTUPLEHEADER(0);
 204         bool            isnull;
 205         int32           salary;
 206
 207         salary = DatumGetInt32(GetAttributeByName(tuple, "salary", &isnull));
 208         if (isnull)
 209                 PG_RETURN_NULL();
 210         PG_RETURN_BOOL(salary > 699);
 211 }
 212
 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
 216  */
 217
 218 typedef struct
 219 {
 220         Point           center;
 221         double          radius;
 222 }       WIDGET;
 223
 224 WIDGET     *widget_in(char *str);
 225 char       *widget_out(WIDGET * widget);
 226 extern Datum pt_in_widget(PG_FUNCTION_ARGS);
 227
 228 #define NARGS   3
 229
 230 WIDGET *
 231 widget_in(char *str)
 232 {
 233         char       *p,
 234                            *coord[NARGS],
 235                                 buf2[1000];
 236         int                     i;
 237         WIDGET     *result;
 238
 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]);
 250
 251         snprintf(buf2, sizeof(buf2), "widget_in: read (%f, %f, %f)\n",
 252                          result->center.x, result->center.y, result->radius);
 253         return result;
 254 }
 255
 256 char *
 257 widget_out(WIDGET * widget)
 258 {
 259         char       *result;
 260
 261         if (widget == NULL)
 262                 return NULL;
 263
 264         result = (char *) palloc(60);
 265         sprintf(result, "(%g,%g,%g)",
 266                         widget->center.x, widget->center.y, widget->radius);
 267         return result;
 268 }
 269
 270 PG_FUNCTION_INFO_V1(pt_in_widget);
 271
 272 Datum
 273 pt_in_widget(PG_FUNCTION_ARGS)
 274 {
 275         Point      *point = PG_GETARG_POINT_P(0);
 276         WIDGET     *widget = (WIDGET *) PG_GETARG_POINTER(1);
 277
 278         PG_RETURN_BOOL(point_dt(point, &widget->center) < widget->radius);
 279 }
 280
 281 PG_FUNCTION_INFO_V1(boxarea);
 282
 283 Datum
 284 boxarea(PG_FUNCTION_ARGS)
 285 {
 286         BOX                *box = PG_GETARG_BOX_P(0);
 287         double          width,
 288                                 height;
 289
 290         width = Abs(box->high.x - box->low.x);
 291         height = Abs(box->high.y - box->low.y);
 292         PG_RETURN_FLOAT8(width * height);
 293 }
 294
 295 char *
 296 reverse_name(char *string)
 297 {
 298         int                     i;
 299         int                     len;
 300         char       *new_string;
 301
 302         new_string = palloc0(NAMEDATALEN);
 303         for (i = 0; i < NAMEDATALEN && string[i]; ++i)
 304                 ;
 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;
 311 }
 312
 313 /*
 314  * This rather silly function is just to test that oldstyle functions
 315  * work correctly on toast-able inputs.
 316  */
 317 int
 318 oldstyle_length(int n, text *t)
 319 {
 320         int                     len = 0;
 321
 322         if (t)
 323                 len = VARSIZE(t) - VARHDRSZ;
 324
 325         return n + len;
 326 }
 327
 328 #include "executor/spi.h"               /* this is what you need to work with SPI */
 329 #include "commands/trigger.h"   /* -"- and triggers */
 330
 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);
 338
 339 PG_FUNCTION_INFO_V1(funny_dup17);
 340
 341 Datum
 342 funny_dup17(PG_FUNCTION_ARGS)
 343 {
 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;
 358
 359         if (!CALLED_AS_TRIGGER(fcinfo))
 360                 elog(ERROR, "funny_dup17: not fired by trigger manager");
 361
 362         tuple = trigdata->tg_trigtuple;
 363         rel = trigdata->tg_relation;
 364         tupdesc = rel->rd_att;
 365         if (TRIGGER_FIRED_BEFORE(trigdata->tg_event))
 366         {
 367                 xid = &fd17b_xid;
 368                 level = &fd17b_level;
 369                 recursion = &fd17b_recursion;
 370                 when = "BEFORE";
 371         }
 372         else
 373         {
 374                 xid = &fd17a_xid;
 375                 level = &fd17a_level;
 376                 recursion = &fd17a_recursion;
 377                 when = "AFTER ";
 378         }
 379
 380         if (!TransactionIdIsCurrentTransactionId(*xid))
 381         {
 382                 *xid = GetCurrentTransactionId();
 383                 *level = 0;
 384                 *recursion = true;
 385         }
 386
 387         if (*level == 17)
 388         {
 389                 *recursion = false;
 390                 return PointerGetDatum(tuple);
 391         }
 392
 393         if (!(*recursion))
 394                 return PointerGetDatum(tuple);
 395
 396         (*level)++;
 397
 398         SPI_connect();
 399
 400         fieldval = SPI_getvalue(tuple, tupdesc, 1);
 401         fieldtype = SPI_gettype(tupdesc, 1);
 402
 403         query = (char *) palloc(100 + NAMEDATALEN * 3 +
 404                                                         strlen(fieldval) + strlen(fieldtype));
 405
 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);
 410
 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);
 414
 415         inserted = SPI_processed;
 416
 417         sprintf(query, "select count (*) from %s where %s = '%s'::%s",
 418                         SPI_getrelname(rel),
 419                         SPI_fname(tupdesc, 1),
 420                         fieldval, fieldtype);
 421
 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);
 425
 426         if (SPI_processed > 0)
 427         {
 428                 selected = DatumGetInt32(DirectFunctionCall1(int4in,
 429                                                                                                 CStringGetDatum(SPI_getvalue(
 430                                                                                                            SPI_tuptable->vals[0],
 431                                                                                                            SPI_tuptable->tupdesc,
 432                                                                                                                                                          1
 433                                                                                                                                                 ))));
 434         }
 435
 436         elog(DEBUG4, "funny_dup17 (fired %s) on level %3d: %d/%d tuples inserted/selected",
 437                  when, *level, inserted, selected);
 438
 439         SPI_finish();
 440
 441         (*level)--;
 442
 443         if (*level == 0)
 444                 *xid = InvalidTransactionId;
 445
 446         return PointerGetDatum(tuple);
 447 }
 448
 449 extern Datum ttdummy(PG_FUNCTION_ARGS);
 450 extern Datum set_ttdummy(PG_FUNCTION_ARGS);
 451
 452 #define TTDUMMY_INFINITY        999999
 453
 454 static void *splan = NULL;
 455 static bool ttoff = false;
 456
 457 PG_FUNCTION_INFO_V1(ttdummy);
 458
 459 Datum
 460 ttdummy(PG_FUNCTION_ARGS)
 461 {
 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;
 482
 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: can't 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: can't process INSERT event");
 491         if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
 492                 newtuple = trigdata->tg_newtuple;
 493
 494         trigtuple = trigdata->tg_trigtuple;
 495
 496         rel = trigdata->tg_relation;
 497         relname = SPI_getrelname(rel);
 498
 499         /* check if TT is OFF for this relation */
 500         if (ttoff)                                      /* OFF - nothing to do */
 501         {
 502                 pfree(relname);
 503                 return PointerGetDatum((newtuple != NULL) ? newtuple : trigtuple);
 504         }
 505
 506         trigger = trigdata->tg_trigger;
 507
 508         if (trigger->tgnargs != 2)
 509                 elog(ERROR, "ttdummy (%s): invalid (!= 2) number of arguments %d",
 510                          relname, trigger->tgnargs);
 511
 512         args = trigger->tgargs;
 513         tupdesc = rel->rd_att;
 514         natts = tupdesc->natts;
 515
 516         for (i = 0; i < 2; i++)
 517         {
 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]);
 524         }
 525
 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]);
 529
 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]);
 533
 534         if (newtuple != NULL)           /* UPDATE */
 535         {
 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]);
 542
 543                 if (oldon != newon || oldoff != newoff)
 544                         elog(ERROR, "ttdummy (%s): you can't change %s and/or %s columns (use set_ttdummy)",
 545                                  relname, args[0], args[1]);
 546
 547                 if (newoff != TTDUMMY_INFINITY)
 548                 {
 549                         pfree(relname);         /* allocated in upper executor context */
 550                         return PointerGetDatum(NULL);
 551                 }
 552         }
 553         else if (oldoff != TTDUMMY_INFINITY)            /* DELETE */
 554         {
 555                 pfree(relname);
 556                 return PointerGetDatum(NULL);
 557         }
 558
 559         {
 560                 text       *seqname = DatumGetTextP(DirectFunctionCall1(textin,
 561                                                                                         CStringGetDatum("ttdummy_seq")));
 562
 563                 newoff = DirectFunctionCall1(nextval,
 564                                                                          PointerGetDatum(seqname));
 565                 /* nextval now returns int64; coerce down to int32 */
 566                 newoff = Int32GetDatum((int32) DatumGetInt64(newoff));
 567                 pfree(seqname);
 568         }
 569
 570         /* Connect to SPI manager */
 571         if ((ret = SPI_connect()) < 0)
 572                 elog(ERROR, "ttdummy (%s): SPI_connect returned %d", relname, ret);
 573
 574         /* Fetch tuple values and nulls */
 575         cvals = (Datum *) palloc(natts * sizeof(Datum));
 576         cnulls = (char *) palloc(natts * sizeof(char));
 577         for (i = 0; i < natts; i++)
 578         {
 579                 cvals[i] = SPI_getbinval((newtuple != NULL) ? newtuple : trigtuple,
 580                                                                  tupdesc, i + 1, &isnull);
 581                 cnulls[i] = (isnull) ? 'n' : ' ';
 582         }
 583
 584         /* change date column(s) */
 585         if (newtuple)                           /* UPDATE */
 586         {
 587                 cvals[attnum[0] - 1] = newoff;  /* start_date eq current date */
 588                 cnulls[attnum[0] - 1] = ' ';
 589                 cvals[attnum[1] - 1] = TTDUMMY_INFINITY;                /* stop_date eq INFINITY */
 590                 cnulls[attnum[1] - 1] = ' ';
 591         }
 592         else
 593                 /* DELETE */
 594         {
 595                 cvals[attnum[1] - 1] = newoff;  /* stop_date eq current date */
 596                 cnulls[attnum[1] - 1] = ' ';
 597         }
 598
 599         /* if there is no plan ... */
 600         if (splan == NULL)
 601         {
 602                 void       *pplan;
 603                 Oid                *ctypes;
 604                 char       *query;
 605
 606                 /* allocate space in preparation */
 607                 ctypes = (Oid *) palloc(natts * sizeof(Oid));
 608                 query = (char *) palloc(100 + 16 * natts);
 609
 610                 /*
 611                  * Construct query: INSERT INTO _relation_ VALUES ($1, ...)
 612                  */
 613                 sprintf(query, "INSERT INTO %s VALUES (", relname);
 614                 for (i = 1; i <= natts; i++)
 615                 {
 616                         sprintf(query + strlen(query), "$%d%s",
 617                                         i, (i < natts) ? ", " : ")");
 618                         ctypes[i - 1] = SPI_gettypeid(tupdesc, i);
 619                 }
 620
 621                 /* Prepare plan for query */
 622                 pplan = SPI_prepare(query, natts, ctypes);
 623                 if (pplan == NULL)
 624                         elog(ERROR, "ttdummy (%s): SPI_prepare returned %d", relname, SPI_result);
 625
 626                 pplan = SPI_saveplan(pplan);
 627                 if (pplan == NULL)
 628                         elog(ERROR, "ttdummy (%s): SPI_saveplan returned %d", relname, SPI_result);
 629
 630                 splan = pplan;
 631         }
 632
 633         ret = SPI_execp(splan, cvals, cnulls, 0);
 634
 635         if (ret < 0)
 636                 elog(ERROR, "ttdummy (%s): SPI_execp returned %d", relname, ret);
 637
 638         /* Tuple to return to upper Executor ... */
 639         if (newtuple)                           /* UPDATE */
 640         {
 641                 HeapTuple       tmptuple;
 642
 643                 tmptuple = SPI_copytuple(trigtuple);
 644                 rettuple = SPI_modifytuple(rel, tmptuple, 1, &(attnum[1]), &newoff, NULL);
 645                 SPI_freetuple(tmptuple);
 646         }
 647         else
 648                 /* DELETE */
 649                 rettuple = trigtuple;
 650
 651         SPI_finish();                           /* don't forget say Bye to SPI mgr */
 652
 653         pfree(relname);
 654
 655         return PointerGetDatum(rettuple);
 656 }
 657
 658 PG_FUNCTION_INFO_V1(set_ttdummy);
 659
 660 Datum
 661 set_ttdummy(PG_FUNCTION_ARGS)
 662 {
 663         int32           on = PG_GETARG_INT32(0);
 664
 665         if (ttoff)                                      /* OFF currently */
 666         {
 667                 if (on == 0)
 668                         PG_RETURN_INT32(0);
 669
 670                 /* turn ON */
 671                 ttoff = false;
 672                 PG_RETURN_INT32(0);
 673         }
 674
 675         /* ON currently */
 676         if (on != 0)
 677                 PG_RETURN_INT32(1);
 678
 679         /* turn OFF */
 680         ttoff = true;
 681
 682         PG_RETURN_INT32(1);
 683 }
 684
 685
 686 /*
 687  * Type int44 has no real-world use, but the regression tests use it.
 688  * It's a four-element vector of int4's.
 689  */
 690
 691 /*
 692  *              int44in                 - converts "num num ..." to internal form
 693  *
 694  *              Note: Fills any missing positions with zeroes.
 695  */
 696 PG_FUNCTION_INFO_V1(int44in);
 697
 698 Datum
 699 int44in(PG_FUNCTION_ARGS)
 700 {
 701         char       *input_string = PG_GETARG_CSTRING(0);
 702         int32      *result = (int32 *) palloc(4 * sizeof(int32));
 703         int                     i;
 704
 705         i = sscanf(input_string,
 706                            "%d, %d, %d, %d",
 707                            &result[0],
 708                            &result[1],
 709                            &result[2],
 710                            &result[3]);
 711         while (i < 4)
 712                 result[i++] = 0;
 713
 714         PG_RETURN_POINTER(result);
 715 }
 716
 717 /*
 718  *              int44out                - converts internal form to "num num ..."
 719  */
 720 PG_FUNCTION_INFO_V1(int44out);
 721
 722 Datum
 723 int44out(PG_FUNCTION_ARGS)
 724 {
 725         int32      *an_array = (int32 *) PG_GETARG_POINTER(0);
 726         char       *result = (char *) palloc(16 * 4);           /* Allow 14 digits +
 727                                                                                                                  * sign */
 728         int                     i;
 729         char       *walk;
 730
 731         walk = result;
 732         for (i = 0; i < 4; i++)
 733         {
 734                 pg_ltoa(an_array[i], walk);
 735                 while (*++walk != '\0')
 736                         ;
 737                 *walk++ = ' ';
 738         }
 739         *--walk = '\0';
 740         PG_RETURN_CSTRING(result);
 741 }