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

   1 /*
   2  * $PostgreSQL: pgsql/src/test/regress/regress.c,v 1.62 2004/10/21 19:28:36 tgl Exp $
   3  */
   4
   5 #include "postgres.h"
   6
   7 #include <float.h>                              /* faked on sunos */
   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 extern Datum regress_dist_ptpath(PG_FUNCTION_ARGS);
  19 extern Datum regress_path_dist(PG_FUNCTION_ARGS);
  20 extern PATH *poly2path(POLYGON *poly);
  21 extern Datum interpt_pp(PG_FUNCTION_ARGS);
  22 extern void regress_lseg_construct(LSEG *lseg, Point *pt1, Point *pt2);
  23 extern Datum overpaid(PG_FUNCTION_ARGS);
  24 extern Datum boxarea(PG_FUNCTION_ARGS);
  25 extern char *reverse_name(char *string);
  26 extern int      oldstyle_length(int n, text *t);
  27 extern Datum int44in(PG_FUNCTION_ARGS);
  28 extern Datum int44out(PG_FUNCTION_ARGS);
  29
  30 /*
  31  * Distance from a point to a path
  32  */
  33 PG_FUNCTION_INFO_V1(regress_dist_ptpath);
  34
  35 Datum
  36 regress_dist_ptpath(PG_FUNCTION_ARGS)
  37 {
  38         Point      *pt = PG_GETARG_POINT_P(0);
  39         PATH       *path = PG_GETARG_PATH_P(1);
  40         float8          result = 0.0;   /* keep compiler quiet */
  41         float8          tmp;
  42         int                     i;
  43         LSEG            lseg;
  44
  45         switch (path->npts)
  46         {
  47                 case 0:
  48                         PG_RETURN_NULL();
  49                 case 1:
  50                         result = point_dt(pt, &path->p[0]);
  51                         break;
  52                 default:
  53
  54                         /*
  55                          * the distance from a point to a path is the smallest
  56                          * distance from the point to any of its constituent segments.
  57                          */
  58                         Assert(path->npts > 1);
  59                         for (i = 0; i < path->npts - 1; ++i)
  60                         {
  61                                 regress_lseg_construct(&lseg, &path->p[i], &path->p[i + 1]);
  62                                 tmp = DatumGetFloat8(DirectFunctionCall2(dist_ps,
  63                                                                                                           PointPGetDatum(pt),
  64                                                                                                   LsegPGetDatum(&lseg)));
  65                                 if (i == 0 || tmp < result)
  66                                         result = tmp;
  67                         }
  68                         break;
  69         }
  70         PG_RETURN_FLOAT8(result);
  71 }
  72
  73 /*
  74  * this essentially does a cartesian product of the lsegs in the
  75  * two paths, and finds the min distance between any two lsegs
  76  */
  77 PG_FUNCTION_INFO_V1(regress_path_dist);
  78
  79 Datum
  80 regress_path_dist(PG_FUNCTION_ARGS)
  81 {
  82         PATH       *p1 = PG_GETARG_PATH_P(0);
  83         PATH       *p2 = PG_GETARG_PATH_P(1);
  84         bool            have_min = false;
  85         float8          min = 0.0;              /* initialize to keep compiler quiet */
  86         float8          tmp;
  87         int                     i,
  88                                 j;
  89         LSEG            seg1,
  90                                 seg2;
  91
  92         for (i = 0; i < p1->npts - 1; i++)
  93         {
  94                 for (j = 0; j < p2->npts - 1; j++)
  95                 {
  96                         regress_lseg_construct(&seg1, &p1->p[i], &p1->p[i + 1]);
  97                         regress_lseg_construct(&seg2, &p2->p[j], &p2->p[j + 1]);
  98
  99                         tmp = DatumGetFloat8(DirectFunctionCall2(lseg_distance,
 100                                                                                                          LsegPGetDatum(&seg1),
 101                                                                                                   LsegPGetDatum(&seg2)));
 102                         if (!have_min || tmp < min)
 103                         {
 104                                 min = tmp;
 105                                 have_min = true;
 106                         }
 107                 }
 108         }
 109
 110         if (!have_min)
 111                 PG_RETURN_NULL();
 112
 113         PG_RETURN_FLOAT8(min);
 114 }
 115
 116 PATH *
 117 poly2path(POLYGON *poly)
 118 {
 119         int                     i;
 120         char       *output = (char *) palloc(2 * (P_MAXDIG + 1) * poly->npts + 64);
 121         char            buf[2 * (P_MAXDIG) + 20];
 122
 123         sprintf(output, "(1, %*d", P_MAXDIG, poly->npts);
 124
 125         for (i = 0; i < poly->npts; i++)
 126         {
 127                 snprintf(buf, sizeof(buf), ",%*g,%*g",
 128                                  P_MAXDIG, poly->p[i].x, P_MAXDIG, poly->p[i].y);
 129                 strcat(output, buf);
 130         }
 131
 132         snprintf(buf, sizeof(buf), "%c", RDELIM);
 133         strcat(output, buf);
 134         return DatumGetPathP(DirectFunctionCall1(path_in,
 135                                                                                          CStringGetDatum(output)));
 136 }
 137
 138 /* return the point where two paths intersect, or NULL if no intersection. */
 139 PG_FUNCTION_INFO_V1(interpt_pp);
 140
 141 Datum
 142 interpt_pp(PG_FUNCTION_ARGS)
 143 {
 144         PATH       *p1 = PG_GETARG_PATH_P(0);
 145         PATH       *p2 = PG_GETARG_PATH_P(1);
 146         int                     i,
 147                                 j;
 148         LSEG            seg1,
 149                                 seg2;
 150         bool            found;                  /* We've found the intersection */
 151
 152         found = false;                          /* Haven't found it yet */
 153
 154         for (i = 0; i < p1->npts - 1 && !found; i++)
 155         {
 156                 regress_lseg_construct(&seg1, &p1->p[i], &p1->p[i + 1]);
 157                 for (j = 0; j < p2->npts - 1 && !found; j++)
 158                 {
 159                         regress_lseg_construct(&seg2, &p2->p[j], &p2->p[j + 1]);
 160                         if (DatumGetBool(DirectFunctionCall2(lseg_intersect,
 161                                                                                                  LsegPGetDatum(&seg1),
 162                                                                                                  LsegPGetDatum(&seg2))))
 163                                 found = true;
 164                 }
 165         }
 166
 167         if (!found)
 168                 PG_RETURN_NULL();
 169
 170         /*
 171          * Note: DirectFunctionCall2 will kick out an error if lseg_interpt()
 172          * returns NULL, but that should be impossible since we know the two
 173          * segments intersect.
 174          */
 175         PG_RETURN_DATUM(DirectFunctionCall2(lseg_interpt,
 176                                                                                 LsegPGetDatum(&seg1),
 177                                                                                 LsegPGetDatum(&seg2)));
 178 }
 179
 180
 181 /* like lseg_construct, but assume space already allocated */
 182 void
 183 regress_lseg_construct(LSEG *lseg, Point *pt1, Point *pt2)
 184 {
 185         lseg->p[0].x = pt1->x;
 186         lseg->p[0].y = pt1->y;
 187         lseg->p[1].x = pt2->x;
 188         lseg->p[1].y = pt2->y;
 189         lseg->m = point_sl(pt1, pt2);
 190 }
 191
 192 PG_FUNCTION_INFO_V1(overpaid);
 193
 194 Datum
 195 overpaid(PG_FUNCTION_ARGS)
 196 {
 197         HeapTupleHeader tuple = PG_GETARG_HEAPTUPLEHEADER(0);
 198         bool            isnull;
 199         int32           salary;
 200
 201         salary = DatumGetInt32(GetAttributeByName(tuple, "salary", &isnull));
 202         if (isnull)
 203                 PG_RETURN_NULL();
 204         PG_RETURN_BOOL(salary > 699);
 205 }
 206
 207 /* New type "widget"
 208  * This used to be "circle", but I added circle to builtins,
 209  *      so needed to make sure the names do not collide. - tgl 97/04/21
 210  */
 211
 212 typedef struct
 213 {
 214         Point           center;
 215         double          radius;
 216 }       WIDGET;
 217
 218 WIDGET     *widget_in(char *str);
 219 char       *widget_out(WIDGET * widget);
 220 extern Datum pt_in_widget(PG_FUNCTION_ARGS);
 221
 222 #define NARGS   3
 223
 224 WIDGET *
 225 widget_in(char *str)
 226 {
 227         char       *p,
 228                            *coord[NARGS],
 229                                 buf2[1000];
 230         int                     i;
 231         WIDGET     *result;
 232
 233         if (str == NULL)
 234                 return NULL;
 235         for (i = 0, p = str; *p && i < NARGS && *p != RDELIM; p++)
 236                 if (*p == ',' || (*p == LDELIM && !i))
 237                         coord[i++] = p + 1;
 238         if (i < NARGS - 1)
 239                 return NULL;
 240         result = (WIDGET *) palloc(sizeof(WIDGET));
 241         result->center.x = atof(coord[0]);
 242         result->center.y = atof(coord[1]);
 243         result->radius = atof(coord[2]);
 244
 245         snprintf(buf2, sizeof(buf2), "widget_in: read (%f, %f, %f)\n",
 246                          result->center.x, result->center.y, result->radius);
 247         return result;
 248 }
 249
 250 char *
 251 widget_out(WIDGET * widget)
 252 {
 253         char       *result;
 254
 255         if (widget == NULL)
 256                 return NULL;
 257
 258         result = (char *) palloc(60);
 259         sprintf(result, "(%g,%g,%g)",
 260                         widget->center.x, widget->center.y, widget->radius);
 261         return result;
 262 }
 263
 264 PG_FUNCTION_INFO_V1(pt_in_widget);
 265
 266 Datum
 267 pt_in_widget(PG_FUNCTION_ARGS)
 268 {
 269         Point      *point = PG_GETARG_POINT_P(0);
 270         WIDGET     *widget = (WIDGET *) PG_GETARG_POINTER(1);
 271
 272         PG_RETURN_BOOL(point_dt(point, &widget->center) < widget->radius);
 273 }
 274
 275 PG_FUNCTION_INFO_V1(boxarea);
 276
 277 Datum
 278 boxarea(PG_FUNCTION_ARGS)
 279 {
 280         BOX                *box = PG_GETARG_BOX_P(0);
 281         double          width,
 282                                 height;
 283
 284         width = Abs(box->high.x - box->low.x);
 285         height = Abs(box->high.y - box->low.y);
 286         PG_RETURN_FLOAT8(width * height);
 287 }
 288
 289 char *
 290 reverse_name(char *string)
 291 {
 292         int                     i;
 293         int                     len;
 294         char       *new_string;
 295
 296         new_string = palloc0(NAMEDATALEN);
 297         for (i = 0; i < NAMEDATALEN && string[i]; ++i)
 298                 ;
 299         if (i == NAMEDATALEN || !string[i])
 300                 --i;
 301         len = i;
 302         for (; i >= 0; --i)
 303                 new_string[len - i] = string[i];
 304         return new_string;
 305 }
 306
 307 /*
 308  * This rather silly function is just to test that oldstyle functions
 309  * work correctly on toast-able inputs.
 310  */
 311 int
 312 oldstyle_length(int n, text *t)
 313 {
 314         int                     len = 0;
 315
 316         if (t)
 317                 len = VARSIZE(t) - VARHDRSZ;
 318
 319         return n + len;
 320 }
 321
 322 #include "executor/spi.h"               /* this is what you need to work with SPI */
 323 #include "commands/trigger.h"   /* -"- and triggers */
 324
 325 static TransactionId fd17b_xid = InvalidTransactionId;
 326 static TransactionId fd17a_xid = InvalidTransactionId;
 327 static int      fd17b_level = 0;
 328 static int      fd17a_level = 0;
 329 static bool fd17b_recursion = true;
 330 static bool fd17a_recursion = true;
 331 extern Datum funny_dup17(PG_FUNCTION_ARGS);
 332
 333 PG_FUNCTION_INFO_V1(funny_dup17);
 334
 335 Datum
 336 funny_dup17(PG_FUNCTION_ARGS)
 337 {
 338         TriggerData *trigdata = (TriggerData *) fcinfo->context;
 339         TransactionId *xid;
 340         int                *level;
 341         bool       *recursion;
 342         Relation        rel;
 343         TupleDesc       tupdesc;
 344         HeapTuple       tuple;
 345         char       *query,
 346                            *fieldval,
 347                            *fieldtype;
 348         char       *when;
 349         int                     inserted;
 350         int                     selected = 0;
 351         int                     ret;
 352
 353         if (!CALLED_AS_TRIGGER(fcinfo))
 354                 elog(ERROR, "funny_dup17: not fired by trigger manager");
 355
 356         tuple = trigdata->tg_trigtuple;
 357         rel = trigdata->tg_relation;
 358         tupdesc = rel->rd_att;
 359         if (TRIGGER_FIRED_BEFORE(trigdata->tg_event))
 360         {
 361                 xid = &fd17b_xid;
 362                 level = &fd17b_level;
 363                 recursion = &fd17b_recursion;
 364                 when = "BEFORE";
 365         }
 366         else
 367         {
 368                 xid = &fd17a_xid;
 369                 level = &fd17a_level;
 370                 recursion = &fd17a_recursion;
 371                 when = "AFTER ";
 372         }
 373
 374         if (!TransactionIdIsCurrentTransactionId(*xid))
 375         {
 376                 *xid = GetCurrentTransactionId();
 377                 *level = 0;
 378                 *recursion = true;
 379         }
 380
 381         if (*level == 17)
 382         {
 383                 *recursion = false;
 384                 return PointerGetDatum(tuple);
 385         }
 386
 387         if (!(*recursion))
 388                 return PointerGetDatum(tuple);
 389
 390         (*level)++;
 391
 392         SPI_connect();
 393
 394         fieldval = SPI_getvalue(tuple, tupdesc, 1);
 395         fieldtype = SPI_gettype(tupdesc, 1);
 396
 397         query = (char *) palloc(100 + NAMEDATALEN * 3 +
 398                                                         strlen(fieldval) + strlen(fieldtype));
 399
 400         sprintf(query, "insert into %s select * from %s where %s = '%s'::%s",
 401                         SPI_getrelname(rel), SPI_getrelname(rel),
 402                         SPI_fname(tupdesc, 1),
 403                         fieldval, fieldtype);
 404
 405         if ((ret = SPI_exec(query, 0)) < 0)
 406                 elog(ERROR, "funny_dup17 (fired %s) on level %3d: SPI_exec (insert ...) returned %d",
 407                          when, *level, ret);
 408
 409         inserted = SPI_processed;
 410
 411         sprintf(query, "select count (*) from %s where %s = '%s'::%s",
 412                         SPI_getrelname(rel),
 413                         SPI_fname(tupdesc, 1),
 414                         fieldval, fieldtype);
 415
 416         if ((ret = SPI_exec(query, 0)) < 0)
 417                 elog(ERROR, "funny_dup17 (fired %s) on level %3d: SPI_exec (select ...) returned %d",
 418                          when, *level, ret);
 419
 420         if (SPI_processed > 0)
 421         {
 422                 selected = DatumGetInt32(DirectFunctionCall1(int4in,
 423                                                                                         CStringGetDatum(SPI_getvalue(
 424                                                                                                    SPI_tuptable->vals[0],
 425                                                                                                    SPI_tuptable->tupdesc,
 426                                                                                                                                                  1
 427                                                                                                                                         ))));
 428         }
 429
 430         elog(DEBUG4, "funny_dup17 (fired %s) on level %3d: %d/%d tuples inserted/selected",
 431                  when, *level, inserted, selected);
 432
 433         SPI_finish();
 434
 435         (*level)--;
 436
 437         if (*level == 0)
 438                 *xid = InvalidTransactionId;
 439
 440         return PointerGetDatum(tuple);
 441 }
 442
 443 extern Datum ttdummy(PG_FUNCTION_ARGS);
 444 extern Datum set_ttdummy(PG_FUNCTION_ARGS);
 445
 446 #define TTDUMMY_INFINITY        999999
 447
 448 static void *splan = NULL;
 449 static bool ttoff = false;
 450
 451 PG_FUNCTION_INFO_V1(ttdummy);
 452
 453 Datum
 454 ttdummy(PG_FUNCTION_ARGS)
 455 {
 456         TriggerData *trigdata = (TriggerData *) fcinfo->context;
 457         Trigger    *trigger;            /* to get trigger name */
 458         char      **args;                       /* arguments */
 459         int                     attnum[2];              /* fnumbers of start/stop columns */
 460         Datum           oldon,
 461                                 oldoff;
 462         Datum           newon,
 463                                 newoff;
 464         Datum      *cvals;                      /* column values */
 465         char       *cnulls;                     /* column nulls */
 466         char       *relname;            /* triggered relation name */
 467         Relation        rel;                    /* triggered relation */
 468         HeapTuple       trigtuple;
 469         HeapTuple       newtuple = NULL;
 470         HeapTuple       rettuple;
 471         TupleDesc       tupdesc;                /* tuple description */
 472         int                     natts;                  /* # of attributes */
 473         bool            isnull;                 /* to know is some column NULL or not */
 474         int                     ret;
 475         int                     i;
 476
 477         if (!CALLED_AS_TRIGGER(fcinfo))
 478                 elog(ERROR, "ttdummy: not fired by trigger manager");
 479         if (TRIGGER_FIRED_FOR_STATEMENT(trigdata->tg_event))
 480                 elog(ERROR, "ttdummy: can't process STATEMENT events");
 481         if (TRIGGER_FIRED_AFTER(trigdata->tg_event))
 482                 elog(ERROR, "ttdummy: must be fired before event");
 483         if (TRIGGER_FIRED_BY_INSERT(trigdata->tg_event))
 484                 elog(ERROR, "ttdummy: can't process INSERT event");
 485         if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
 486                 newtuple = trigdata->tg_newtuple;
 487
 488         trigtuple = trigdata->tg_trigtuple;
 489
 490         rel = trigdata->tg_relation;
 491         relname = SPI_getrelname(rel);
 492
 493         /* check if TT is OFF for this relation */
 494         if (ttoff)                                      /* OFF - nothing to do */
 495         {
 496                 pfree(relname);
 497                 return PointerGetDatum((newtuple != NULL) ? newtuple : trigtuple);
 498         }
 499
 500         trigger = trigdata->tg_trigger;
 501
 502         if (trigger->tgnargs != 2)
 503                 elog(ERROR, "ttdummy (%s): invalid (!= 2) number of arguments %d",
 504                          relname, trigger->tgnargs);
 505
 506         args = trigger->tgargs;
 507         tupdesc = rel->rd_att;
 508         natts = tupdesc->natts;
 509
 510         for (i = 0; i < 2; i++)
 511         {
 512                 attnum[i] = SPI_fnumber(tupdesc, args[i]);
 513                 if (attnum[i] < 0)
 514                         elog(ERROR, "ttdummy (%s): there is no attribute %s", relname, args[i]);
 515                 if (SPI_gettypeid(tupdesc, attnum[i]) != INT4OID)
 516                         elog(ERROR, "ttdummy (%s): attributes %s and %s must be of abstime type",
 517                                  relname, args[0], args[1]);
 518         }
 519
 520         oldon = SPI_getbinval(trigtuple, tupdesc, attnum[0], &isnull);
 521         if (isnull)
 522                 elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[0]);
 523
 524         oldoff = SPI_getbinval(trigtuple, tupdesc, attnum[1], &isnull);
 525         if (isnull)
 526                 elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[1]);
 527
 528         if (newtuple != NULL)           /* UPDATE */
 529         {
 530                 newon = SPI_getbinval(newtuple, tupdesc, attnum[0], &isnull);
 531                 if (isnull)
 532                         elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[0]);
 533                 newoff = SPI_getbinval(newtuple, tupdesc, attnum[1], &isnull);
 534                 if (isnull)
 535                         elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[1]);
 536
 537                 if (oldon != newon || oldoff != newoff)
 538                         elog(ERROR, "ttdummy (%s): you can't change %s and/or %s columns (use set_ttdummy)",
 539                                  relname, args[0], args[1]);
 540
 541                 if (newoff != TTDUMMY_INFINITY)
 542                 {
 543                         pfree(relname);         /* allocated in upper executor context */
 544                         return PointerGetDatum(NULL);
 545                 }
 546         }
 547         else if (oldoff != TTDUMMY_INFINITY)            /* DELETE */
 548         {
 549                 pfree(relname);
 550                 return PointerGetDatum(NULL);
 551         }
 552
 553         {
 554                 text       *seqname = DatumGetTextP(DirectFunctionCall1(textin,
 555                                                                                 CStringGetDatum("ttdummy_seq")));
 556
 557                 newoff = DirectFunctionCall1(nextval,
 558                                                                          PointerGetDatum(seqname));
 559                 /* nextval now returns int64; coerce down to int32 */
 560                 newoff = Int32GetDatum((int32) DatumGetInt64(newoff));
 561                 pfree(seqname);
 562         }
 563
 564         /* Connect to SPI manager */
 565         if ((ret = SPI_connect()) < 0)
 566                 elog(ERROR, "ttdummy (%s): SPI_connect returned %d", relname, ret);
 567
 568         /* Fetch tuple values and nulls */
 569         cvals = (Datum *) palloc(natts * sizeof(Datum));
 570         cnulls = (char *) palloc(natts * sizeof(char));
 571         for (i = 0; i < natts; i++)
 572         {
 573                 cvals[i] = SPI_getbinval((newtuple != NULL) ? newtuple : trigtuple,
 574                                                                  tupdesc, i + 1, &isnull);
 575                 cnulls[i] = (isnull) ? 'n' : ' ';
 576         }
 577
 578         /* change date column(s) */
 579         if (newtuple)                           /* UPDATE */
 580         {
 581                 cvals[attnum[0] - 1] = newoff;  /* start_date eq current date */
 582                 cnulls[attnum[0] - 1] = ' ';
 583                 cvals[attnum[1] - 1] = TTDUMMY_INFINITY;                /* stop_date eq INFINITY */
 584                 cnulls[attnum[1] - 1] = ' ';
 585         }
 586         else
 587                 /* DELETE */
 588         {
 589                 cvals[attnum[1] - 1] = newoff;  /* stop_date eq current date */
 590                 cnulls[attnum[1] - 1] = ' ';
 591         }
 592
 593         /* if there is no plan ... */
 594         if (splan == NULL)
 595         {
 596                 void       *pplan;
 597                 Oid                *ctypes;
 598                 char       *query;
 599
 600                 /* allocate space in preparation */
 601                 ctypes = (Oid *) palloc(natts * sizeof(Oid));
 602                 query = (char *) palloc(100 + 16 * natts);
 603
 604                 /*
 605                  * Construct query: INSERT INTO _relation_ VALUES ($1, ...)
 606                  */
 607                 sprintf(query, "INSERT INTO %s VALUES (", relname);
 608                 for (i = 1; i <= natts; i++)
 609                 {
 610                         sprintf(query + strlen(query), "$%d%s",
 611                                         i, (i < natts) ? ", " : ")");
 612                         ctypes[i - 1] = SPI_gettypeid(tupdesc, i);
 613                 }
 614
 615                 /* Prepare plan for query */
 616                 pplan = SPI_prepare(query, natts, ctypes);
 617                 if (pplan == NULL)
 618                         elog(ERROR, "ttdummy (%s): SPI_prepare returned %d", relname, SPI_result);
 619
 620                 pplan = SPI_saveplan(pplan);
 621                 if (pplan == NULL)
 622                         elog(ERROR, "ttdummy (%s): SPI_saveplan returned %d", relname, SPI_result);
 623
 624                 splan = pplan;
 625         }
 626
 627         ret = SPI_execp(splan, cvals, cnulls, 0);
 628
 629         if (ret < 0)
 630                 elog(ERROR, "ttdummy (%s): SPI_execp returned %d", relname, ret);
 631
 632         /* Tuple to return to upper Executor ... */
 633         if (newtuple)                           /* UPDATE */
 634         {
 635                 HeapTuple       tmptuple;
 636
 637                 tmptuple = SPI_copytuple(trigtuple);
 638                 rettuple = SPI_modifytuple(rel, tmptuple, 1, &(attnum[1]), &newoff, NULL);
 639                 SPI_freetuple(tmptuple);
 640         }
 641         else
 642                 /* DELETE */
 643                 rettuple = trigtuple;
 644
 645         SPI_finish();                           /* don't forget say Bye to SPI mgr */
 646
 647         pfree(relname);
 648
 649         return PointerGetDatum(rettuple);
 650 }
 651
 652 PG_FUNCTION_INFO_V1(set_ttdummy);
 653
 654 Datum
 655 set_ttdummy(PG_FUNCTION_ARGS)
 656 {
 657         int32           on = PG_GETARG_INT32(0);
 658
 659         if (ttoff)                                      /* OFF currently */
 660         {
 661                 if (on == 0)
 662                         PG_RETURN_INT32(0);
 663
 664                 /* turn ON */
 665                 ttoff = false;
 666                 PG_RETURN_INT32(0);
 667         }
 668
 669         /* ON currently */
 670         if (on != 0)
 671                 PG_RETURN_INT32(1);
 672
 673         /* turn OFF */
 674         ttoff = true;
 675
 676         PG_RETURN_INT32(1);
 677 }
 678
 679
 680 /*
 681  * Type int44 has no real-world use, but the regression tests use it.
 682  * It's a four-element vector of int4's.
 683  */
 684
 685 /*
 686  *              int44in                 - converts "num num ..." to internal form
 687  *
 688  *              Note: Fills any missing positions with zeroes.
 689  */
 690 PG_FUNCTION_INFO_V1(int44in);
 691
 692 Datum
 693 int44in(PG_FUNCTION_ARGS)
 694 {
 695         char       *input_string = PG_GETARG_CSTRING(0);
 696         int32      *result = (int32 *) palloc(4 * sizeof(int32));
 697         int                     i;
 698
 699         i = sscanf(input_string,
 700                            "%d, %d, %d, %d",
 701                            &result[0],
 702                            &result[1],
 703                            &result[2],
 704                            &result[3]);
 705         while (i < 4)
 706                 result[i++] = 0;
 707
 708         PG_RETURN_POINTER(result);
 709 }
 710
 711 /*
 712  *              int44out                - converts internal form to "num num ..."
 713  */
 714 PG_FUNCTION_INFO_V1(int44out);
 715
 716 Datum
 717 int44out(PG_FUNCTION_ARGS)
 718 {
 719         int32      *an_array = (int32 *) PG_GETARG_POINTER(0);
 720         char       *result = (char *) palloc(16 * 4);           /* Allow 14 digits +
 721                                                                                                                  * sign */
 722         int                     i;
 723         char       *walk;
 724
 725         walk = result;
 726         for (i = 0; i < 4; i++)
 727         {
 728                 pg_ltoa(an_array[i], walk);
 729                 while (*++walk != '\0')
 730                         ;
 731                 *walk++ = ' ';
 732         }
 733         *--walk = '\0';
 734         PG_RETURN_CSTRING(result);
 735 }