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

   1 /*
   2  * $Header: /cvsroot/pgsql/src/test/regress/regress.c,v 1.52 2002/11/10 07:25:14 momjian 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 typedef TupleTableSlot *TUPLE;
  19
  20 extern Datum regress_dist_ptpath(PG_FUNCTION_ARGS);
  21 extern Datum regress_path_dist(PG_FUNCTION_ARGS);
  22 extern PATH *poly2path(POLYGON *poly);
  23 extern Datum interpt_pp(PG_FUNCTION_ARGS);
  24 extern void regress_lseg_construct(LSEG *lseg, Point *pt1, Point *pt2);
  25 extern Datum overpaid(PG_FUNCTION_ARGS);
  26 extern Datum boxarea(PG_FUNCTION_ARGS);
  27 extern char *reverse_name(char *string);
  28 extern int      oldstyle_length(int n, text *t);
  29 extern Datum int44in(PG_FUNCTION_ARGS);
  30 extern Datum int44out(PG_FUNCTION_ARGS);
  31
  32 /*
  33 ** Distance from a point to a path
  34 */
  35 PG_FUNCTION_INFO_V1(regress_dist_ptpath);
  36
  37 Datum
  38 regress_dist_ptpath(PG_FUNCTION_ARGS)
  39 {
  40         Point      *pt = PG_GETARG_POINT_P(0);
  41         PATH       *path = PG_GETARG_PATH_P(1);
  42         float8          result = 0.0;   /* keep compiler quiet */
  43         float8          tmp;
  44         int                     i;
  45         LSEG            lseg;
  46
  47         switch (path->npts)
  48         {
  49                 case 0:
  50                         PG_RETURN_NULL();
  51                 case 1:
  52                         result = point_dt(pt, &path->p[0]);
  53                         break;
  54                 default:
  55
  56                         /*
  57                          * the distance from a point to a path is the smallest
  58                          * distance from the point to any of its constituent segments.
  59                          */
  60                         Assert(path->npts > 1);
  61                         for (i = 0; i < path->npts - 1; ++i)
  62                         {
  63                                 regress_lseg_construct(&lseg, &path->p[i], &path->p[i + 1]);
  64                                 tmp = DatumGetFloat8(DirectFunctionCall2(dist_ps,
  65                                                                                                           PointPGetDatum(pt),
  66                                                                                                   LsegPGetDatum(&lseg)));
  67                                 if (i == 0 || tmp < result)
  68                                         result = tmp;
  69                         }
  70                         break;
  71         }
  72         PG_RETURN_FLOAT8(result);
  73 }
  74
  75 /* this essentially does a cartesian product of the lsegs in the
  76    two paths, and finds the min distance between any two lsegs */
  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(poly)
 118 POLYGON    *poly;
 119 {
 120         int                     i;
 121         char       *output = (char *) palloc(2 * (P_MAXDIG + 1) * poly->npts + 64);
 122         char            buf[2 * (P_MAXDIG) + 20];
 123
 124         sprintf(output, "(1, %*d", P_MAXDIG, poly->npts);
 125
 126         for (i = 0; i < poly->npts; i++)
 127         {
 128                 sprintf(buf, ",%*g,%*g", P_MAXDIG, poly->p[i].x, P_MAXDIG, poly->p[i].y);
 129                 strcat(output, buf);
 130         }
 131
 132         sprintf(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, pt1, pt2)
 184 LSEG       *lseg;
 185 Point      *pt1;
 186 Point      *pt2;
 187 {
 188         lseg->p[0].x = pt1->x;
 189         lseg->p[0].y = pt1->y;
 190         lseg->p[1].x = pt2->x;
 191         lseg->p[1].y = pt2->y;
 192         lseg->m = point_sl(pt1, pt2);
 193 }
 194
 195 PG_FUNCTION_INFO_V1(overpaid);
 196
 197 Datum
 198 overpaid(PG_FUNCTION_ARGS)
 199 {
 200         TUPLE           tuple = (TUPLE) PG_GETARG_POINTER(0);
 201         bool            isnull;
 202         int32           salary;
 203
 204         salary = DatumGetInt32(GetAttributeByName(tuple, "salary", &isnull));
 205         if (isnull)
 206                 PG_RETURN_NULL();
 207         PG_RETURN_BOOL(salary > 699);
 208 }
 209
 210 /* New type "widget"
 211  * This used to be "circle", but I added circle to builtins,
 212  *      so needed to make sure the names do not collide. - tgl 97/04/21
 213  */
 214
 215 typedef struct
 216 {
 217         Point           center;
 218         double          radius;
 219 }       WIDGET;
 220
 221 WIDGET     *widget_in(char *str);
 222 char       *widget_out(WIDGET * widget);
 223 extern Datum pt_in_widget(PG_FUNCTION_ARGS);
 224
 225 #define NARGS   3
 226
 227 WIDGET *
 228 widget_in(str)
 229 char       *str;
 230 {
 231         char       *p,
 232                            *coord[NARGS],
 233                                 buf2[1000];
 234         int                     i;
 235         WIDGET     *result;
 236
 237         if (str == NULL)
 238                 return NULL;
 239         for (i = 0, p = str; *p && i < NARGS && *p != RDELIM; p++)
 240                 if (*p == ',' || (*p == LDELIM && !i))
 241                         coord[i++] = p + 1;
 242         if (i < NARGS - 1)
 243                 return NULL;
 244         result = (WIDGET *) palloc(sizeof(WIDGET));
 245         result->center.x = atof(coord[0]);
 246         result->center.y = atof(coord[1]);
 247         result->radius = atof(coord[2]);
 248
 249         sprintf(buf2, "widget_in: read (%f, %f, %f)\n", result->center.x,
 250                         result->center.y, result->radius);
 251         return result;
 252 }
 253
 254 char *
 255 widget_out(widget)
 256 WIDGET     *widget;
 257 {
 258         char       *result;
 259
 260         if (widget == NULL)
 261                 return NULL;
 262
 263         result = (char *) palloc(60);
 264         sprintf(result, "(%g,%g,%g)",
 265                         widget->center.x, widget->center.y, widget->radius);
 266         return result;
 267 }
 268
 269 PG_FUNCTION_INFO_V1(pt_in_widget);
 270
 271 Datum
 272 pt_in_widget(PG_FUNCTION_ARGS)
 273 {
 274         Point      *point = PG_GETARG_POINT_P(0);
 275         WIDGET     *widget = (WIDGET *) PG_GETARG_POINTER(1);
 276
 277         PG_RETURN_BOOL(point_dt(point, &widget->center) < widget->radius);
 278 }
 279
 280 #define ABS(X) ((X) >= 0 ? (X) : -(X))
 281
 282 PG_FUNCTION_INFO_V1(boxarea);
 283
 284 Datum
 285 boxarea(PG_FUNCTION_ARGS)
 286 {
 287         BOX                *box = PG_GETARG_BOX_P(0);
 288         double          width,
 289                                 height;
 290
 291         width = ABS(box->high.x - box->low.x);
 292         height = ABS(box->high.y - box->low.y);
 293         PG_RETURN_FLOAT8(width * height);
 294 }
 295
 296 char *
 297 reverse_name(char *string)
 298 {
 299         int                     i;
 300         int                     len;
 301         char       *new_string;
 302
 303         if (!(new_string = palloc0(NAMEDATALEN)))
 304         {
 305                 fprintf(stderr, "reverse_name: palloc failed\n");
 306                 return NULL;
 307         }
 308         for (i = 0; i < NAMEDATALEN && string[i]; ++i)
 309                 ;
 310         if (i == NAMEDATALEN || !string[i])
 311                 --i;
 312         len = i;
 313         for (; i >= 0; --i)
 314                 new_string[len - i] = string[i];
 315         return new_string;
 316 }
 317
 318 /* This rather silly function is just to test that oldstyle functions
 319  * work correctly on toast-able inputs.
 320  */
 321 int
 322 oldstyle_length(int n, text *t)
 323 {
 324         int                     len = 0;
 325
 326         if (t)
 327                 len = VARSIZE(t) - VARHDRSZ;
 328
 329         return n + len;
 330 }
 331
 332 #include "executor/spi.h"               /* this is what you need to work with SPI */
 333 #include "commands/trigger.h"   /* -"- and triggers */
 334
 335 static TransactionId fd17b_xid = InvalidTransactionId;
 336 static TransactionId fd17a_xid = InvalidTransactionId;
 337 static int      fd17b_level = 0;
 338 static int      fd17a_level = 0;
 339 static bool fd17b_recursion = true;
 340 static bool fd17a_recursion = true;
 341 extern Datum funny_dup17(PG_FUNCTION_ARGS);
 342
 343 PG_FUNCTION_INFO_V1(funny_dup17);
 344
 345 Datum
 346 funny_dup17(PG_FUNCTION_ARGS)
 347 {
 348         TriggerData *trigdata = (TriggerData *) fcinfo->context;
 349         TransactionId *xid;
 350         int                *level;
 351         bool       *recursion;
 352         Relation        rel;
 353         TupleDesc       tupdesc;
 354         HeapTuple       tuple;
 355         char       *query,
 356                            *fieldval,
 357                            *fieldtype;
 358         char       *when;
 359         int                     inserted;
 360         int                     selected = 0;
 361         int                     ret;
 362
 363         if (!CALLED_AS_TRIGGER(fcinfo))
 364                 elog(ERROR, "funny_dup17: not fired by trigger manager");
 365
 366         tuple = trigdata->tg_trigtuple;
 367         rel = trigdata->tg_relation;
 368         tupdesc = rel->rd_att;
 369         if (TRIGGER_FIRED_BEFORE(trigdata->tg_event))
 370         {
 371                 xid = &fd17b_xid;
 372                 level = &fd17b_level;
 373                 recursion = &fd17b_recursion;
 374                 when = "BEFORE";
 375         }
 376         else
 377         {
 378                 xid = &fd17a_xid;
 379                 level = &fd17a_level;
 380                 recursion = &fd17a_recursion;
 381                 when = "AFTER ";
 382         }
 383
 384         if (!TransactionIdIsCurrentTransactionId(*xid))
 385         {
 386                 *xid = GetCurrentTransactionId();
 387                 *level = 0;
 388                 *recursion = true;
 389         }
 390
 391         if (*level == 17)
 392         {
 393                 *recursion = false;
 394                 return PointerGetDatum(tuple);
 395         }
 396
 397         if (!(*recursion))
 398                 return PointerGetDatum(tuple);
 399
 400         (*level)++;
 401
 402         SPI_connect();
 403
 404         fieldval = SPI_getvalue(tuple, tupdesc, 1);
 405         fieldtype = SPI_gettype(tupdesc, 1);
 406
 407         query = (char *) palloc(100 + NAMEDATALEN * 3 +
 408                                                         strlen(fieldval) + strlen(fieldtype));
 409
 410         sprintf(query, "insert into %s select * from %s where %s = '%s'::%s",
 411                         SPI_getrelname(rel), SPI_getrelname(rel),
 412                         SPI_fname(tupdesc, 1),
 413                         fieldval, fieldtype);
 414
 415         if ((ret = SPI_exec(query, 0)) < 0)
 416                 elog(ERROR, "funny_dup17 (fired %s) on level %3d: SPI_exec (insert ...) returned %d",
 417                          when, *level, ret);
 418
 419         inserted = SPI_processed;
 420
 421         sprintf(query, "select count (*) from %s where %s = '%s'::%s",
 422                         SPI_getrelname(rel),
 423                         SPI_fname(tupdesc, 1),
 424                         fieldval, fieldtype);
 425
 426         if ((ret = SPI_exec(query, 0)) < 0)
 427                 elog(ERROR, "funny_dup17 (fired %s) on level %3d: SPI_exec (select ...) returned %d",
 428                          when, *level, ret);
 429
 430         if (SPI_processed > 0)
 431         {
 432                 selected = DatumGetInt32(DirectFunctionCall1(int4in,
 433                                                                                         CStringGetDatum(SPI_getvalue(
 434                                                                                                    SPI_tuptable->vals[0],
 435                                                                                                    SPI_tuptable->tupdesc,
 436                                                                                                                                                  1
 437                                                                                                                                         ))));
 438         }
 439
 440         elog(DEBUG3, "funny_dup17 (fired %s) on level %3d: %d/%d tuples inserted/selected",
 441                  when, *level, inserted, selected);
 442
 443         SPI_finish();
 444
 445         (*level)--;
 446
 447         if (*level == 0)
 448                 *xid = InvalidTransactionId;
 449
 450         return PointerGetDatum(tuple);
 451 }
 452
 453 extern Datum ttdummy(PG_FUNCTION_ARGS);
 454 extern Datum set_ttdummy(PG_FUNCTION_ARGS);
 455
 456 #define TTDUMMY_INFINITY        999999
 457
 458 static void *splan = NULL;
 459 static bool ttoff = false;
 460
 461 PG_FUNCTION_INFO_V1(ttdummy);
 462
 463 Datum
 464 ttdummy(PG_FUNCTION_ARGS)
 465 {
 466         TriggerData *trigdata = (TriggerData *) fcinfo->context;
 467         Trigger    *trigger;            /* to get trigger name */
 468         char      **args;                       /* arguments */
 469         int                     attnum[2];              /* fnumbers of start/stop columns */
 470         Datum           oldon,
 471                                 oldoff;
 472         Datum           newon,
 473                                 newoff;
 474         Datum      *cvals;                      /* column values */
 475         char       *cnulls;                     /* column nulls */
 476         char       *relname;            /* triggered relation name */
 477         Relation        rel;                    /* triggered relation */
 478         HeapTuple       trigtuple;
 479         HeapTuple       newtuple = NULL;
 480         HeapTuple       rettuple;
 481         TupleDesc       tupdesc;                /* tuple description */
 482         int                     natts;                  /* # of attributes */
 483         bool            isnull;                 /* to know is some column NULL or not */
 484         int                     ret;
 485         int                     i;
 486
 487         if (!CALLED_AS_TRIGGER(fcinfo))
 488                 elog(ERROR, "ttdummy: not fired by trigger manager");
 489         if (TRIGGER_FIRED_FOR_STATEMENT(trigdata->tg_event))
 490                 elog(ERROR, "ttdummy: can't process STATEMENT events");
 491         if (TRIGGER_FIRED_AFTER(trigdata->tg_event))
 492                 elog(ERROR, "ttdummy: must be fired before event");
 493         if (TRIGGER_FIRED_BY_INSERT(trigdata->tg_event))
 494                 elog(ERROR, "ttdummy: can't process INSERT event");
 495         if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
 496                 newtuple = trigdata->tg_newtuple;
 497
 498         trigtuple = trigdata->tg_trigtuple;
 499
 500         rel = trigdata->tg_relation;
 501         relname = SPI_getrelname(rel);
 502
 503         /* check if TT is OFF for this relation */
 504         if (ttoff)                                      /* OFF - nothing to do */
 505         {
 506                 pfree(relname);
 507                 return PointerGetDatum((newtuple != NULL) ? newtuple : trigtuple);
 508         }
 509
 510         trigger = trigdata->tg_trigger;
 511
 512         if (trigger->tgnargs != 2)
 513                 elog(ERROR, "ttdummy (%s): invalid (!= 2) number of arguments %d",
 514                          relname, trigger->tgnargs);
 515
 516         args = trigger->tgargs;
 517         tupdesc = rel->rd_att;
 518         natts = tupdesc->natts;
 519
 520         for (i = 0; i < 2; i++)
 521         {
 522                 attnum[i] = SPI_fnumber(tupdesc, args[i]);
 523                 if (attnum[i] < 0)
 524                         elog(ERROR, "ttdummy (%s): there is no attribute %s", relname, args[i]);
 525                 if (SPI_gettypeid(tupdesc, attnum[i]) != INT4OID)
 526                         elog(ERROR, "ttdummy (%s): attributes %s and %s must be of abstime type",
 527                                  relname, args[0], args[1]);
 528         }
 529
 530         oldon = SPI_getbinval(trigtuple, tupdesc, attnum[0], &isnull);
 531         if (isnull)
 532                 elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[0]);
 533
 534         oldoff = SPI_getbinval(trigtuple, tupdesc, attnum[1], &isnull);
 535         if (isnull)
 536                 elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[1]);
 537
 538         if (newtuple != NULL)           /* UPDATE */
 539         {
 540                 newon = SPI_getbinval(newtuple, tupdesc, attnum[0], &isnull);
 541                 if (isnull)
 542                         elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[0]);
 543                 newoff = SPI_getbinval(newtuple, tupdesc, attnum[1], &isnull);
 544                 if (isnull)
 545                         elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[1]);
 546
 547                 if (oldon != newon || oldoff != newoff)
 548                         elog(ERROR, "ttdummy (%s): you can't change %s and/or %s columns (use set_ttdummy)",
 549                                  relname, args[0], args[1]);
 550
 551                 if (newoff != TTDUMMY_INFINITY)
 552                 {
 553                         pfree(relname);         /* allocated in upper executor context */
 554                         return PointerGetDatum(NULL);
 555                 }
 556         }
 557         else if (oldoff != TTDUMMY_INFINITY)            /* DELETE */
 558         {
 559                 pfree(relname);
 560                 return PointerGetDatum(NULL);
 561         }
 562
 563         {
 564                 text       *seqname = DatumGetTextP(DirectFunctionCall1(textin,
 565                                                                                 CStringGetDatum("ttdummy_seq")));
 566
 567                 newoff = DirectFunctionCall1(nextval,
 568                                                                          PointerGetDatum(seqname));
 569                 /* nextval now returns int64; coerce down to int32 */
 570                 newoff = Int32GetDatum((int32) DatumGetInt64(newoff));
 571                 pfree(seqname);
 572         }
 573
 574         /* Connect to SPI manager */
 575         if ((ret = SPI_connect()) < 0)
 576                 elog(ERROR, "ttdummy (%s): SPI_connect returned %d", relname, ret);
 577
 578         /* Fetch tuple values and nulls */
 579         cvals = (Datum *) palloc(natts * sizeof(Datum));
 580         cnulls = (char *) palloc(natts * sizeof(char));
 581         for (i = 0; i < natts; i++)
 582         {
 583                 cvals[i] = SPI_getbinval((newtuple != NULL) ? newtuple : trigtuple,
 584                                                                  tupdesc, i + 1, &isnull);
 585                 cnulls[i] = (isnull) ? 'n' : ' ';
 586         }
 587
 588         /* change date column(s) */
 589         if (newtuple)                           /* UPDATE */
 590         {
 591                 cvals[attnum[0] - 1] = newoff;  /* start_date eq current date */
 592                 cnulls[attnum[0] - 1] = ' ';
 593                 cvals[attnum[1] - 1] = TTDUMMY_INFINITY;                /* stop_date eq INFINITY */
 594                 cnulls[attnum[1] - 1] = ' ';
 595         }
 596         else
 597 /* DELETE */
 598         {
 599                 cvals[attnum[1] - 1] = newoff;  /* stop_date eq current date */
 600                 cnulls[attnum[1] - 1] = ' ';
 601         }
 602
 603         /* if there is no plan ... */
 604         if (splan == NULL)
 605         {
 606                 void       *pplan;
 607                 Oid                *ctypes;
 608                 char       *query;
 609
 610                 /* allocate space in preparation */
 611                 ctypes = (Oid *) palloc(natts * sizeof(Oid));
 612                 query = (char *) palloc(100 + 16 * natts);
 613
 614                 /*
 615                  * Construct query: INSERT INTO _relation_ VALUES ($1, ...)
 616                  */
 617                 sprintf(query, "INSERT INTO %s VALUES (", relname);
 618                 for (i = 1; i <= natts; i++)
 619                 {
 620                         sprintf(query + strlen(query), "$%d%s",
 621                                         i, (i < natts) ? ", " : ")");
 622                         ctypes[i - 1] = SPI_gettypeid(tupdesc, i);
 623                 }
 624
 625                 /* Prepare plan for query */
 626                 pplan = SPI_prepare(query, natts, ctypes);
 627                 if (pplan == NULL)
 628                         elog(ERROR, "ttdummy (%s): SPI_prepare returned %d", relname, SPI_result);
 629
 630                 pplan = SPI_saveplan(pplan);
 631                 if (pplan == NULL)
 632                         elog(ERROR, "ttdummy (%s): SPI_saveplan returned %d", relname, SPI_result);
 633
 634                 splan = pplan;
 635         }
 636
 637         ret = SPI_execp(splan, cvals, cnulls, 0);
 638
 639         if (ret < 0)
 640                 elog(ERROR, "ttdummy (%s): SPI_execp returned %d", relname, ret);
 641
 642         /* Tuple to return to upper Executor ... */
 643         if (newtuple)                           /* UPDATE */
 644         {
 645                 HeapTuple       tmptuple;
 646
 647                 tmptuple = SPI_copytuple(trigtuple);
 648                 rettuple = SPI_modifytuple(rel, tmptuple, 1, &(attnum[1]), &newoff, NULL);
 649                 SPI_freetuple(tmptuple);
 650         }
 651         else
 652 /* DELETE */
 653                 rettuple = trigtuple;
 654
 655         SPI_finish();                           /* don't forget say Bye to SPI mgr */
 656
 657         pfree(relname);
 658
 659         return PointerGetDatum(rettuple);
 660 }
 661
 662 PG_FUNCTION_INFO_V1(set_ttdummy);
 663
 664 Datum
 665 set_ttdummy(PG_FUNCTION_ARGS)
 666 {
 667         int32           on = PG_GETARG_INT32(0);
 668
 669         if (ttoff)                                      /* OFF currently */
 670         {
 671                 if (on == 0)
 672                         PG_RETURN_INT32(0);
 673
 674                 /* turn ON */
 675                 ttoff = false;
 676                 PG_RETURN_INT32(0);
 677         }
 678
 679         /* ON currently */
 680         if (on != 0)
 681                 PG_RETURN_INT32(1);
 682
 683         /* turn OFF */
 684         ttoff = true;
 685
 686         PG_RETURN_INT32(1);
 687 }
 688
 689
 690 /*
 691  * Type int44 has no real-world use, but the regression tests use it.
 692  * It's a four-element vector of int4's.
 693  */
 694
 695 /*
 696  *              int44in                 - converts "num num ..." to internal form
 697  *
 698  *              Note: Fills any missing positions with zeroes.
 699  */
 700 PG_FUNCTION_INFO_V1(int44in);
 701
 702 Datum
 703 int44in(PG_FUNCTION_ARGS)
 704 {
 705         char       *input_string = PG_GETARG_CSTRING(0);
 706         int32      *result = (int32 *) palloc(4 * sizeof(int32));
 707         int                     i;
 708
 709         i = sscanf(input_string,
 710                            "%d, %d, %d, %d",
 711                            &result[0],
 712                            &result[1],
 713                            &result[2],
 714                            &result[3]);
 715         while (i < 4)
 716                 result[i++] = 0;
 717
 718         PG_RETURN_POINTER(result);
 719 }
 720
 721 /*
 722  *              int44out                - converts internal form to "num num ..."
 723  */
 724 PG_FUNCTION_INFO_V1(int44out);
 725
 726 Datum
 727 int44out(PG_FUNCTION_ARGS)
 728 {
 729         int32      *an_array = (int32 *) PG_GETARG_POINTER(0);
 730         char       *result = (char *) palloc(16 * 4);           /* Allow 14 digits +
 731                                                                                                                  * sign */
 732         int                     i;
 733         char       *walk;
 734
 735         walk = result;
 736         for (i = 0; i < 4; i++)
 737         {
 738                 pg_ltoa(an_array[i], walk);
 739                 while (*++walk != '\0')
 740                         ;
 741                 *walk++ = ' ';
 742         }
 743         *--walk = '\0';
 744         PG_RETURN_CSTRING(result);
 745 }