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

   1 /*
   2  * $PostgreSQL: pgsql/src/test/regress/regress.c,v 1.67 2006/05/30 21:21:30 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 #ifdef PG_MODULE_MAGIC
  31 PG_MODULE_MAGIC;
  32 #endif
  33
  34
  35 /*
  36  * Distance from a point to a path
  37  */
  38 PG_FUNCTION_INFO_V1(regress_dist_ptpath);
  39
  40 Datum
  41 regress_dist_ptpath(PG_FUNCTION_ARGS)
  42 {
  43         Point      *pt = PG_GETARG_POINT_P(0);
  44         PATH       *path = PG_GETARG_PATH_P(1);
  45         float8          result = 0.0;   /* keep compiler quiet */
  46         float8          tmp;
  47         int                     i;
  48         LSEG            lseg;
  49
  50         switch (path->npts)
  51         {
  52                 case 0:
  53                         PG_RETURN_NULL();
  54                 case 1:
  55                         result = point_dt(pt, &path->p[0]);
  56                         break;
  57                 default:
  58
  59                         /*
  60                          * the distance from a point to a path is the smallest distance
  61                          * from the point to any of its constituent segments.
  62                          */
  63                         Assert(path->npts > 1);
  64                         for (i = 0; i < path->npts - 1; ++i)
  65                         {
  66                                 regress_lseg_construct(&lseg, &path->p[i], &path->p[i + 1]);
  67                                 tmp = DatumGetFloat8(DirectFunctionCall2(dist_ps,
  68                                                                                                                  PointPGetDatum(pt),
  69                                                                                                           LsegPGetDatum(&lseg)));
  70                                 if (i == 0 || tmp < result)
  71                                         result = tmp;
  72                         }
  73                         break;
  74         }
  75         PG_RETURN_FLOAT8(result);
  76 }
  77
  78 /*
  79  * this essentially does a cartesian product of the lsegs in the
  80  * two paths, and finds the min distance between any two lsegs
  81  */
  82 PG_FUNCTION_INFO_V1(regress_path_dist);
  83
  84 Datum
  85 regress_path_dist(PG_FUNCTION_ARGS)
  86 {
  87         PATH       *p1 = PG_GETARG_PATH_P(0);
  88         PATH       *p2 = PG_GETARG_PATH_P(1);
  89         bool            have_min = false;
  90         float8          min = 0.0;              /* initialize to keep compiler quiet */
  91         float8          tmp;
  92         int                     i,
  93                                 j;
  94         LSEG            seg1,
  95                                 seg2;
  96
  97         for (i = 0; i < p1->npts - 1; i++)
  98         {
  99                 for (j = 0; j < p2->npts - 1; j++)
 100                 {
 101                         regress_lseg_construct(&seg1, &p1->p[i], &p1->p[i + 1]);
 102                         regress_lseg_construct(&seg2, &p2->p[j], &p2->p[j + 1]);
 103
 104                         tmp = DatumGetFloat8(DirectFunctionCall2(lseg_distance,
 105                                                                                                          LsegPGetDatum(&seg1),
 106                                                                                                          LsegPGetDatum(&seg2)));
 107                         if (!have_min || tmp < min)
 108                         {
 109                                 min = tmp;
 110                                 have_min = true;
 111                         }
 112                 }
 113         }
 114
 115         if (!have_min)
 116                 PG_RETURN_NULL();
 117
 118         PG_RETURN_FLOAT8(min);
 119 }
 120
 121 PATH *
 122 poly2path(POLYGON *poly)
 123 {
 124         int                     i;
 125         char       *output = (char *) palloc(2 * (P_MAXDIG + 1) * poly->npts + 64);
 126         char            buf[2 * (P_MAXDIG) + 20];
 127
 128         sprintf(output, "(1, %*d", P_MAXDIG, poly->npts);
 129
 130         for (i = 0; i < poly->npts; i++)
 131         {
 132                 snprintf(buf, sizeof(buf), ",%*g,%*g",
 133                                  P_MAXDIG, poly->p[i].x, P_MAXDIG, poly->p[i].y);
 134                 strcat(output, buf);
 135         }
 136
 137         snprintf(buf, sizeof(buf), "%c", RDELIM);
 138         strcat(output, buf);
 139         return DatumGetPathP(DirectFunctionCall1(path_in,
 140                                                                                          CStringGetDatum(output)));
 141 }
 142
 143 /* return the point where two paths intersect, or NULL if no intersection. */
 144 PG_FUNCTION_INFO_V1(interpt_pp);
 145
 146 Datum
 147 interpt_pp(PG_FUNCTION_ARGS)
 148 {
 149         PATH       *p1 = PG_GETARG_PATH_P(0);
 150         PATH       *p2 = PG_GETARG_PATH_P(1);
 151         int                     i,
 152                                 j;
 153         LSEG            seg1,
 154                                 seg2;
 155         bool            found;                  /* We've found the intersection */
 156
 157         found = false;                          /* Haven't found it yet */
 158
 159         for (i = 0; i < p1->npts - 1 && !found; i++)
 160         {
 161                 regress_lseg_construct(&seg1, &p1->p[i], &p1->p[i + 1]);
 162                 for (j = 0; j < p2->npts - 1 && !found; j++)
 163                 {
 164                         regress_lseg_construct(&seg2, &p2->p[j], &p2->p[j + 1]);
 165                         if (DatumGetBool(DirectFunctionCall2(lseg_intersect,
 166                                                                                                  LsegPGetDatum(&seg1),
 167                                                                                                  LsegPGetDatum(&seg2))))
 168                                 found = true;
 169                 }
 170         }
 171
 172         if (!found)
 173                 PG_RETURN_NULL();
 174
 175         /*
 176          * Note: DirectFunctionCall2 will kick out an error if lseg_interpt()
 177          * returns NULL, but that should be impossible since we know the two
 178          * segments intersect.
 179          */
 180         PG_RETURN_DATUM(DirectFunctionCall2(lseg_interpt,
 181                                                                                 LsegPGetDatum(&seg1),
 182                                                                                 LsegPGetDatum(&seg2)));
 183 }
 184
 185
 186 /* like lseg_construct, but assume space already allocated */
 187 void
 188 regress_lseg_construct(LSEG *lseg, Point *pt1, Point *pt2)
 189 {
 190         lseg->p[0].x = pt1->x;
 191         lseg->p[0].y = pt1->y;
 192         lseg->p[1].x = pt2->x;
 193         lseg->p[1].y = pt2->y;
 194         lseg->m = point_sl(pt1, pt2);
 195 }
 196
 197 PG_FUNCTION_INFO_V1(overpaid);
 198
 199 Datum
 200 overpaid(PG_FUNCTION_ARGS)
 201 {
 202         HeapTupleHeader tuple = PG_GETARG_HEAPTUPLEHEADER(0);
 203         bool            isnull;
 204         int32           salary;
 205
 206         salary = DatumGetInt32(GetAttributeByName(tuple, "salary", &isnull));
 207         if (isnull)
 208                 PG_RETURN_NULL();
 209         PG_RETURN_BOOL(salary > 699);
 210 }
 211
 212 /* New type "widget"
 213  * This used to be "circle", but I added circle to builtins,
 214  *      so needed to make sure the names do not collide. - tgl 97/04/21
 215  */
 216
 217 typedef struct
 218 {
 219         Point           center;
 220         double          radius;
 221 }       WIDGET;
 222
 223 WIDGET     *widget_in(char *str);
 224 char       *widget_out(WIDGET * widget);
 225 extern Datum pt_in_widget(PG_FUNCTION_ARGS);
 226
 227 #define NARGS   3
 228
 229 WIDGET *
 230 widget_in(char *str)
 231 {
 232         char       *p,
 233                            *coord[NARGS],
 234                                 buf2[1000];
 235         int                     i;
 236         WIDGET     *result;
 237
 238         if (str == NULL)
 239                 return NULL;
 240         for (i = 0, p = str; *p && i < NARGS && *p != RDELIM; p++)
 241                 if (*p == ',' || (*p == LDELIM && !i))
 242                         coord[i++] = p + 1;
 243         if (i < NARGS - 1)
 244                 return NULL;
 245         result = (WIDGET *) palloc(sizeof(WIDGET));
 246         result->center.x = atof(coord[0]);
 247         result->center.y = atof(coord[1]);
 248         result->radius = atof(coord[2]);
 249
 250         snprintf(buf2, sizeof(buf2), "widget_in: read (%f, %f, %f)\n",
 251                          result->center.x, result->center.y, result->radius);
 252         return result;
 253 }
 254
 255 char *
 256 widget_out(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 PG_FUNCTION_INFO_V1(boxarea);
 281
 282 Datum
 283 boxarea(PG_FUNCTION_ARGS)
 284 {
 285         BOX                *box = PG_GETARG_BOX_P(0);
 286         double          width,
 287                                 height;
 288
 289         width = Abs(box->high.x - box->low.x);
 290         height = Abs(box->high.y - box->low.y);
 291         PG_RETURN_FLOAT8(width * height);
 292 }
 293
 294 char *
 295 reverse_name(char *string)
 296 {
 297         int                     i;
 298         int                     len;
 299         char       *new_string;
 300
 301         new_string = palloc0(NAMEDATALEN);
 302         for (i = 0; i < NAMEDATALEN && string[i]; ++i)
 303                 ;
 304         if (i == NAMEDATALEN || !string[i])
 305                 --i;
 306         len = i;
 307         for (; i >= 0; --i)
 308                 new_string[len - i] = string[i];
 309         return new_string;
 310 }
 311
 312 /*
 313  * This rather silly function is just to test that oldstyle functions
 314  * work correctly on toast-able inputs.
 315  */
 316 int
 317 oldstyle_length(int n, text *t)
 318 {
 319         int                     len = 0;
 320
 321         if (t)
 322                 len = VARSIZE(t) - VARHDRSZ;
 323
 324         return n + len;
 325 }
 326
 327 #include "executor/spi.h"               /* this is what you need to work with SPI */
 328 #include "commands/trigger.h"   /* -"- and triggers */
 329
 330 static TransactionId fd17b_xid = InvalidTransactionId;
 331 static TransactionId fd17a_xid = InvalidTransactionId;
 332 static int      fd17b_level = 0;
 333 static int      fd17a_level = 0;
 334 static bool fd17b_recursion = true;
 335 static bool fd17a_recursion = true;
 336 extern Datum funny_dup17(PG_FUNCTION_ARGS);
 337
 338 PG_FUNCTION_INFO_V1(funny_dup17);
 339
 340 Datum
 341 funny_dup17(PG_FUNCTION_ARGS)
 342 {
 343         TriggerData *trigdata = (TriggerData *) fcinfo->context;
 344         TransactionId *xid;
 345         int                *level;
 346         bool       *recursion;
 347         Relation        rel;
 348         TupleDesc       tupdesc;
 349         HeapTuple       tuple;
 350         char       *query,
 351                            *fieldval,
 352                            *fieldtype;
 353         char       *when;
 354         int                     inserted;
 355         int                     selected = 0;
 356         int                     ret;
 357
 358         if (!CALLED_AS_TRIGGER(fcinfo))
 359                 elog(ERROR, "funny_dup17: not fired by trigger manager");
 360
 361         tuple = trigdata->tg_trigtuple;
 362         rel = trigdata->tg_relation;
 363         tupdesc = rel->rd_att;
 364         if (TRIGGER_FIRED_BEFORE(trigdata->tg_event))
 365         {
 366                 xid = &fd17b_xid;
 367                 level = &fd17b_level;
 368                 recursion = &fd17b_recursion;
 369                 when = "BEFORE";
 370         }
 371         else
 372         {
 373                 xid = &fd17a_xid;
 374                 level = &fd17a_level;
 375                 recursion = &fd17a_recursion;
 376                 when = "AFTER ";
 377         }
 378
 379         if (!TransactionIdIsCurrentTransactionId(*xid))
 380         {
 381                 *xid = GetCurrentTransactionId();
 382                 *level = 0;
 383                 *recursion = true;
 384         }
 385
 386         if (*level == 17)
 387         {
 388                 *recursion = false;
 389                 return PointerGetDatum(tuple);
 390         }
 391
 392         if (!(*recursion))
 393                 return PointerGetDatum(tuple);
 394
 395         (*level)++;
 396
 397         SPI_connect();
 398
 399         fieldval = SPI_getvalue(tuple, tupdesc, 1);
 400         fieldtype = SPI_gettype(tupdesc, 1);
 401
 402         query = (char *) palloc(100 + NAMEDATALEN * 3 +
 403                                                         strlen(fieldval) + strlen(fieldtype));
 404
 405         sprintf(query, "insert into %s select * from %s where %s = '%s'::%s",
 406                         SPI_getrelname(rel), SPI_getrelname(rel),
 407                         SPI_fname(tupdesc, 1),
 408                         fieldval, fieldtype);
 409
 410         if ((ret = SPI_exec(query, 0)) < 0)
 411                 elog(ERROR, "funny_dup17 (fired %s) on level %3d: SPI_exec (insert ...) returned %d",
 412                          when, *level, ret);
 413
 414         inserted = SPI_processed;
 415
 416         sprintf(query, "select count (*) from %s where %s = '%s'::%s",
 417                         SPI_getrelname(rel),
 418                         SPI_fname(tupdesc, 1),
 419                         fieldval, fieldtype);
 420
 421         if ((ret = SPI_exec(query, 0)) < 0)
 422                 elog(ERROR, "funny_dup17 (fired %s) on level %3d: SPI_exec (select ...) returned %d",
 423                          when, *level, ret);
 424
 425         if (SPI_processed > 0)
 426         {
 427                 selected = DatumGetInt32(DirectFunctionCall1(int4in,
 428                                                                                                 CStringGetDatum(SPI_getvalue(
 429                                                                                                            SPI_tuptable->vals[0],
 430                                                                                                            SPI_tuptable->tupdesc,
 431                                                                                                                                                          1
 432                                                                                                                                                 ))));
 433         }
 434
 435         elog(DEBUG4, "funny_dup17 (fired %s) on level %3d: %d/%d tuples inserted/selected",
 436                  when, *level, inserted, selected);
 437
 438         SPI_finish();
 439
 440         (*level)--;
 441
 442         if (*level == 0)
 443                 *xid = InvalidTransactionId;
 444
 445         return PointerGetDatum(tuple);
 446 }
 447
 448 extern Datum ttdummy(PG_FUNCTION_ARGS);
 449 extern Datum set_ttdummy(PG_FUNCTION_ARGS);
 450
 451 #define TTDUMMY_INFINITY        999999
 452
 453 static void *splan = NULL;
 454 static bool ttoff = false;
 455
 456 PG_FUNCTION_INFO_V1(ttdummy);
 457
 458 Datum
 459 ttdummy(PG_FUNCTION_ARGS)
 460 {
 461         TriggerData *trigdata = (TriggerData *) fcinfo->context;
 462         Trigger    *trigger;            /* to get trigger name */
 463         char      **args;                       /* arguments */
 464         int                     attnum[2];              /* fnumbers of start/stop columns */
 465         Datum           oldon,
 466                                 oldoff;
 467         Datum           newon,
 468                                 newoff;
 469         Datum      *cvals;                      /* column values */
 470         char       *cnulls;                     /* column nulls */
 471         char       *relname;            /* triggered relation name */
 472         Relation        rel;                    /* triggered relation */
 473         HeapTuple       trigtuple;
 474         HeapTuple       newtuple = NULL;
 475         HeapTuple       rettuple;
 476         TupleDesc       tupdesc;                /* tuple description */
 477         int                     natts;                  /* # of attributes */
 478         bool            isnull;                 /* to know is some column NULL or not */
 479         int                     ret;
 480         int                     i;
 481
 482         if (!CALLED_AS_TRIGGER(fcinfo))
 483                 elog(ERROR, "ttdummy: not fired by trigger manager");
 484         if (TRIGGER_FIRED_FOR_STATEMENT(trigdata->tg_event))
 485                 elog(ERROR, "ttdummy: can't process STATEMENT events");
 486         if (TRIGGER_FIRED_AFTER(trigdata->tg_event))
 487                 elog(ERROR, "ttdummy: must be fired before event");
 488         if (TRIGGER_FIRED_BY_INSERT(trigdata->tg_event))
 489                 elog(ERROR, "ttdummy: can't process INSERT event");
 490         if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
 491                 newtuple = trigdata->tg_newtuple;
 492
 493         trigtuple = trigdata->tg_trigtuple;
 494
 495         rel = trigdata->tg_relation;
 496         relname = SPI_getrelname(rel);
 497
 498         /* check if TT is OFF for this relation */
 499         if (ttoff)                                      /* OFF - nothing to do */
 500         {
 501                 pfree(relname);
 502                 return PointerGetDatum((newtuple != NULL) ? newtuple : trigtuple);
 503         }
 504
 505         trigger = trigdata->tg_trigger;
 506
 507         if (trigger->tgnargs != 2)
 508                 elog(ERROR, "ttdummy (%s): invalid (!= 2) number of arguments %d",
 509                          relname, trigger->tgnargs);
 510
 511         args = trigger->tgargs;
 512         tupdesc = rel->rd_att;
 513         natts = tupdesc->natts;
 514
 515         for (i = 0; i < 2; i++)
 516         {
 517                 attnum[i] = SPI_fnumber(tupdesc, args[i]);
 518                 if (attnum[i] < 0)
 519                         elog(ERROR, "ttdummy (%s): there is no attribute %s", relname, args[i]);
 520                 if (SPI_gettypeid(tupdesc, attnum[i]) != INT4OID)
 521                         elog(ERROR, "ttdummy (%s): attributes %s and %s must be of abstime type",
 522                                  relname, args[0], args[1]);
 523         }
 524
 525         oldon = SPI_getbinval(trigtuple, tupdesc, attnum[0], &isnull);
 526         if (isnull)
 527                 elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[0]);
 528
 529         oldoff = SPI_getbinval(trigtuple, tupdesc, attnum[1], &isnull);
 530         if (isnull)
 531                 elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[1]);
 532
 533         if (newtuple != NULL)           /* UPDATE */
 534         {
 535                 newon = SPI_getbinval(newtuple, tupdesc, attnum[0], &isnull);
 536                 if (isnull)
 537                         elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[0]);
 538                 newoff = SPI_getbinval(newtuple, tupdesc, attnum[1], &isnull);
 539                 if (isnull)
 540                         elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[1]);
 541
 542                 if (oldon != newon || oldoff != newoff)
 543                         elog(ERROR, "ttdummy (%s): you can't change %s and/or %s columns (use set_ttdummy)",
 544                                  relname, args[0], args[1]);
 545
 546                 if (newoff != TTDUMMY_INFINITY)
 547                 {
 548                         pfree(relname);         /* allocated in upper executor context */
 549                         return PointerGetDatum(NULL);
 550                 }
 551         }
 552         else if (oldoff != TTDUMMY_INFINITY)            /* DELETE */
 553         {
 554                 pfree(relname);
 555                 return PointerGetDatum(NULL);
 556         }
 557
 558         {
 559                 text       *seqname = DatumGetTextP(DirectFunctionCall1(textin,
 560                                                                                         CStringGetDatum("ttdummy_seq")));
 561
 562                 newoff = DirectFunctionCall1(nextval,
 563                                                                          PointerGetDatum(seqname));
 564                 /* nextval now returns int64; coerce down to int32 */
 565                 newoff = Int32GetDatum((int32) DatumGetInt64(newoff));
 566                 pfree(seqname);
 567         }
 568
 569         /* Connect to SPI manager */
 570         if ((ret = SPI_connect()) < 0)
 571                 elog(ERROR, "ttdummy (%s): SPI_connect returned %d", relname, ret);
 572
 573         /* Fetch tuple values and nulls */
 574         cvals = (Datum *) palloc(natts * sizeof(Datum));
 575         cnulls = (char *) palloc(natts * sizeof(char));
 576         for (i = 0; i < natts; i++)
 577         {
 578                 cvals[i] = SPI_getbinval((newtuple != NULL) ? newtuple : trigtuple,
 579                                                                  tupdesc, i + 1, &isnull);
 580                 cnulls[i] = (isnull) ? 'n' : ' ';
 581         }
 582
 583         /* change date column(s) */
 584         if (newtuple)                           /* UPDATE */
 585         {
 586                 cvals[attnum[0] - 1] = newoff;  /* start_date eq current date */
 587                 cnulls[attnum[0] - 1] = ' ';
 588                 cvals[attnum[1] - 1] = TTDUMMY_INFINITY;                /* stop_date eq INFINITY */
 589                 cnulls[attnum[1] - 1] = ' ';
 590         }
 591         else
 592                 /* DELETE */
 593         {
 594                 cvals[attnum[1] - 1] = newoff;  /* stop_date eq current date */
 595                 cnulls[attnum[1] - 1] = ' ';
 596         }
 597
 598         /* if there is no plan ... */
 599         if (splan == NULL)
 600         {
 601                 void       *pplan;
 602                 Oid                *ctypes;
 603                 char       *query;
 604
 605                 /* allocate space in preparation */
 606                 ctypes = (Oid *) palloc(natts * sizeof(Oid));
 607                 query = (char *) palloc(100 + 16 * natts);
 608
 609                 /*
 610                  * Construct query: INSERT INTO _relation_ VALUES ($1, ...)
 611                  */
 612                 sprintf(query, "INSERT INTO %s VALUES (", relname);
 613                 for (i = 1; i <= natts; i++)
 614                 {
 615                         sprintf(query + strlen(query), "$%d%s",
 616                                         i, (i < natts) ? ", " : ")");
 617                         ctypes[i - 1] = SPI_gettypeid(tupdesc, i);
 618                 }
 619
 620                 /* Prepare plan for query */
 621                 pplan = SPI_prepare(query, natts, ctypes);
 622                 if (pplan == NULL)
 623                         elog(ERROR, "ttdummy (%s): SPI_prepare returned %d", relname, SPI_result);
 624
 625                 pplan = SPI_saveplan(pplan);
 626                 if (pplan == NULL)
 627                         elog(ERROR, "ttdummy (%s): SPI_saveplan returned %d", relname, SPI_result);
 628
 629                 splan = pplan;
 630         }
 631
 632         ret = SPI_execp(splan, cvals, cnulls, 0);
 633
 634         if (ret < 0)
 635                 elog(ERROR, "ttdummy (%s): SPI_execp returned %d", relname, ret);
 636
 637         /* Tuple to return to upper Executor ... */
 638         if (newtuple)                           /* UPDATE */
 639         {
 640                 HeapTuple       tmptuple;
 641
 642                 tmptuple = SPI_copytuple(trigtuple);
 643                 rettuple = SPI_modifytuple(rel, tmptuple, 1, &(attnum[1]), &newoff, NULL);
 644                 SPI_freetuple(tmptuple);
 645         }
 646         else
 647                 /* DELETE */
 648                 rettuple = trigtuple;
 649
 650         SPI_finish();                           /* don't forget say Bye to SPI mgr */
 651
 652         pfree(relname);
 653
 654         return PointerGetDatum(rettuple);
 655 }
 656
 657 PG_FUNCTION_INFO_V1(set_ttdummy);
 658
 659 Datum
 660 set_ttdummy(PG_FUNCTION_ARGS)
 661 {
 662         int32           on = PG_GETARG_INT32(0);
 663
 664         if (ttoff)                                      /* OFF currently */
 665         {
 666                 if (on == 0)
 667                         PG_RETURN_INT32(0);
 668
 669                 /* turn ON */
 670                 ttoff = false;
 671                 PG_RETURN_INT32(0);
 672         }
 673
 674         /* ON currently */
 675         if (on != 0)
 676                 PG_RETURN_INT32(1);
 677
 678         /* turn OFF */
 679         ttoff = true;
 680
 681         PG_RETURN_INT32(1);
 682 }
 683
 684
 685 /*
 686  * Type int44 has no real-world use, but the regression tests use it.
 687  * It's a four-element vector of int4's.
 688  */
 689
 690 /*
 691  *              int44in                 - converts "num num ..." to internal form
 692  *
 693  *              Note: Fills any missing positions with zeroes.
 694  */
 695 PG_FUNCTION_INFO_V1(int44in);
 696
 697 Datum
 698 int44in(PG_FUNCTION_ARGS)
 699 {
 700         char       *input_string = PG_GETARG_CSTRING(0);
 701         int32      *result = (int32 *) palloc(4 * sizeof(int32));
 702         int                     i;
 703
 704         i = sscanf(input_string,
 705                            "%d, %d, %d, %d",
 706                            &result[0],
 707                            &result[1],
 708                            &result[2],
 709                            &result[3]);
 710         while (i < 4)
 711                 result[i++] = 0;
 712
 713         PG_RETURN_POINTER(result);
 714 }
 715
 716 /*
 717  *              int44out                - converts internal form to "num num ..."
 718  */
 719 PG_FUNCTION_INFO_V1(int44out);
 720
 721 Datum
 722 int44out(PG_FUNCTION_ARGS)
 723 {
 724         int32      *an_array = (int32 *) PG_GETARG_POINTER(0);
 725         char       *result = (char *) palloc(16 * 4);           /* Allow 14 digits +
 726                                                                                                                  * sign */
 727         int                     i;
 728         char       *walk;
 729
 730         walk = result;
 731         for (i = 0; i < 4; i++)
 732         {
 733                 pg_ltoa(an_array[i], walk);
 734                 while (*++walk != '\0')
 735                         ;
 736                 *walk++ = ' ';
 737         }
 738         *--walk = '\0';
 739         PG_RETURN_CSTRING(result);
 740 }