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

   1 /*
   2  * $Header: /cvsroot/pgsql/src/test/regress/regress.c,v 1.53 2002/11/11 03:02:20 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 = palloc(NAMEDATALEN)))
 304         {
 305                 fprintf(stderr, "reverse_name: palloc failed\n");
 306                 return NULL;
 307         }
 308         MemSet(new_string, 0, NAMEDATALEN);
 309         for (i = 0; i < NAMEDATALEN && string[i]; ++i)
 310                 ;
 311         if (i == NAMEDATALEN || !string[i])
 312                 --i;
 313         len = i;
 314         for (; i >= 0; --i)
 315                 new_string[len - i] = string[i];
 316         return new_string;
 317 }
 318
 319 /* This rather silly function is just to test that oldstyle functions
 320  * work correctly on toast-able inputs.
 321  */
 322 int
 323 oldstyle_length(int n, text *t)
 324 {
 325         int                     len = 0;
 326
 327         if (t)
 328                 len = VARSIZE(t) - VARHDRSZ;
 329
 330         return n + len;
 331 }
 332
 333 #include "executor/spi.h"               /* this is what you need to work with SPI */
 334 #include "commands/trigger.h"   /* -"- and triggers */
 335
 336 static TransactionId fd17b_xid = InvalidTransactionId;
 337 static TransactionId fd17a_xid = InvalidTransactionId;
 338 static int      fd17b_level = 0;
 339 static int      fd17a_level = 0;
 340 static bool fd17b_recursion = true;
 341 static bool fd17a_recursion = true;
 342 extern Datum funny_dup17(PG_FUNCTION_ARGS);
 343
 344 PG_FUNCTION_INFO_V1(funny_dup17);
 345
 346 Datum
 347 funny_dup17(PG_FUNCTION_ARGS)
 348 {
 349         TriggerData *trigdata = (TriggerData *) fcinfo->context;
 350         TransactionId *xid;
 351         int                *level;
 352         bool       *recursion;
 353         Relation        rel;
 354         TupleDesc       tupdesc;
 355         HeapTuple       tuple;
 356         char       *query,
 357                            *fieldval,
 358                            *fieldtype;
 359         char       *when;
 360         int                     inserted;
 361         int                     selected = 0;
 362         int                     ret;
 363
 364         if (!CALLED_AS_TRIGGER(fcinfo))
 365                 elog(ERROR, "funny_dup17: not fired by trigger manager");
 366
 367         tuple = trigdata->tg_trigtuple;
 368         rel = trigdata->tg_relation;
 369         tupdesc = rel->rd_att;
 370         if (TRIGGER_FIRED_BEFORE(trigdata->tg_event))
 371         {
 372                 xid = &fd17b_xid;
 373                 level = &fd17b_level;
 374                 recursion = &fd17b_recursion;
 375                 when = "BEFORE";
 376         }
 377         else
 378         {
 379                 xid = &fd17a_xid;
 380                 level = &fd17a_level;
 381                 recursion = &fd17a_recursion;
 382                 when = "AFTER ";
 383         }
 384
 385         if (!TransactionIdIsCurrentTransactionId(*xid))
 386         {
 387                 *xid = GetCurrentTransactionId();
 388                 *level = 0;
 389                 *recursion = true;
 390         }
 391
 392         if (*level == 17)
 393         {
 394                 *recursion = false;
 395                 return PointerGetDatum(tuple);
 396         }
 397
 398         if (!(*recursion))
 399                 return PointerGetDatum(tuple);
 400
 401         (*level)++;
 402
 403         SPI_connect();
 404
 405         fieldval = SPI_getvalue(tuple, tupdesc, 1);
 406         fieldtype = SPI_gettype(tupdesc, 1);
 407
 408         query = (char *) palloc(100 + NAMEDATALEN * 3 +
 409                                                         strlen(fieldval) + strlen(fieldtype));
 410
 411         sprintf(query, "insert into %s select * from %s where %s = '%s'::%s",
 412                         SPI_getrelname(rel), 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 (insert ...) returned %d",
 418                          when, *level, ret);
 419
 420         inserted = SPI_processed;
 421
 422         sprintf(query, "select count (*) from %s where %s = '%s'::%s",
 423                         SPI_getrelname(rel),
 424                         SPI_fname(tupdesc, 1),
 425                         fieldval, fieldtype);
 426
 427         if ((ret = SPI_exec(query, 0)) < 0)
 428                 elog(ERROR, "funny_dup17 (fired %s) on level %3d: SPI_exec (select ...) returned %d",
 429                          when, *level, ret);
 430
 431         if (SPI_processed > 0)
 432         {
 433                 selected = DatumGetInt32(DirectFunctionCall1(int4in,
 434                                                                                         CStringGetDatum(SPI_getvalue(
 435                                                                                                    SPI_tuptable->vals[0],
 436                                                                                                    SPI_tuptable->tupdesc,
 437                                                                                                                                                  1
 438                                                                                                                                         ))));
 439         }
 440
 441         elog(DEBUG3, "funny_dup17 (fired %s) on level %3d: %d/%d tuples inserted/selected",
 442                  when, *level, inserted, selected);
 443
 444         SPI_finish();
 445
 446         (*level)--;
 447
 448         if (*level == 0)
 449                 *xid = InvalidTransactionId;
 450
 451         return PointerGetDatum(tuple);
 452 }
 453
 454 extern Datum ttdummy(PG_FUNCTION_ARGS);
 455 extern Datum set_ttdummy(PG_FUNCTION_ARGS);
 456
 457 #define TTDUMMY_INFINITY        999999
 458
 459 static void *splan = NULL;
 460 static bool ttoff = false;
 461
 462 PG_FUNCTION_INFO_V1(ttdummy);
 463
 464 Datum
 465 ttdummy(PG_FUNCTION_ARGS)
 466 {
 467         TriggerData *trigdata = (TriggerData *) fcinfo->context;
 468         Trigger    *trigger;            /* to get trigger name */
 469         char      **args;                       /* arguments */
 470         int                     attnum[2];              /* fnumbers of start/stop columns */
 471         Datum           oldon,
 472                                 oldoff;
 473         Datum           newon,
 474                                 newoff;
 475         Datum      *cvals;                      /* column values */
 476         char       *cnulls;                     /* column nulls */
 477         char       *relname;            /* triggered relation name */
 478         Relation        rel;                    /* triggered relation */
 479         HeapTuple       trigtuple;
 480         HeapTuple       newtuple = NULL;
 481         HeapTuple       rettuple;
 482         TupleDesc       tupdesc;                /* tuple description */
 483         int                     natts;                  /* # of attributes */
 484         bool            isnull;                 /* to know is some column NULL or not */
 485         int                     ret;
 486         int                     i;
 487
 488         if (!CALLED_AS_TRIGGER(fcinfo))
 489                 elog(ERROR, "ttdummy: not fired by trigger manager");
 490         if (TRIGGER_FIRED_FOR_STATEMENT(trigdata->tg_event))
 491                 elog(ERROR, "ttdummy: can't process STATEMENT events");
 492         if (TRIGGER_FIRED_AFTER(trigdata->tg_event))
 493                 elog(ERROR, "ttdummy: must be fired before event");
 494         if (TRIGGER_FIRED_BY_INSERT(trigdata->tg_event))
 495                 elog(ERROR, "ttdummy: can't process INSERT event");
 496         if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
 497                 newtuple = trigdata->tg_newtuple;
 498
 499         trigtuple = trigdata->tg_trigtuple;
 500
 501         rel = trigdata->tg_relation;
 502         relname = SPI_getrelname(rel);
 503
 504         /* check if TT is OFF for this relation */
 505         if (ttoff)                                      /* OFF - nothing to do */
 506         {
 507                 pfree(relname);
 508                 return PointerGetDatum((newtuple != NULL) ? newtuple : trigtuple);
 509         }
 510
 511         trigger = trigdata->tg_trigger;
 512
 513         if (trigger->tgnargs != 2)
 514                 elog(ERROR, "ttdummy (%s): invalid (!= 2) number of arguments %d",
 515                          relname, trigger->tgnargs);
 516
 517         args = trigger->tgargs;
 518         tupdesc = rel->rd_att;
 519         natts = tupdesc->natts;
 520
 521         for (i = 0; i < 2; i++)
 522         {
 523                 attnum[i] = SPI_fnumber(tupdesc, args[i]);
 524                 if (attnum[i] < 0)
 525                         elog(ERROR, "ttdummy (%s): there is no attribute %s", relname, args[i]);
 526                 if (SPI_gettypeid(tupdesc, attnum[i]) != INT4OID)
 527                         elog(ERROR, "ttdummy (%s): attributes %s and %s must be of abstime type",
 528                                  relname, args[0], args[1]);
 529         }
 530
 531         oldon = SPI_getbinval(trigtuple, tupdesc, attnum[0], &isnull);
 532         if (isnull)
 533                 elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[0]);
 534
 535         oldoff = SPI_getbinval(trigtuple, tupdesc, attnum[1], &isnull);
 536         if (isnull)
 537                 elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[1]);
 538
 539         if (newtuple != NULL)           /* UPDATE */
 540         {
 541                 newon = SPI_getbinval(newtuple, tupdesc, attnum[0], &isnull);
 542                 if (isnull)
 543                         elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[0]);
 544                 newoff = SPI_getbinval(newtuple, tupdesc, attnum[1], &isnull);
 545                 if (isnull)
 546                         elog(ERROR, "ttdummy (%s): %s must be NOT NULL", relname, args[1]);
 547
 548                 if (oldon != newon || oldoff != newoff)
 549                         elog(ERROR, "ttdummy (%s): you can't change %s and/or %s columns (use set_ttdummy)",
 550                                  relname, args[0], args[1]);
 551
 552                 if (newoff != TTDUMMY_INFINITY)
 553                 {
 554                         pfree(relname);         /* allocated in upper executor context */
 555                         return PointerGetDatum(NULL);
 556                 }
 557         }
 558         else if (oldoff != TTDUMMY_INFINITY)            /* DELETE */
 559         {
 560                 pfree(relname);
 561                 return PointerGetDatum(NULL);
 562         }
 563
 564         {
 565                 text       *seqname = DatumGetTextP(DirectFunctionCall1(textin,
 566                                                                                 CStringGetDatum("ttdummy_seq")));
 567
 568                 newoff = DirectFunctionCall1(nextval,
 569                                                                          PointerGetDatum(seqname));
 570                 /* nextval now returns int64; coerce down to int32 */
 571                 newoff = Int32GetDatum((int32) DatumGetInt64(newoff));
 572                 pfree(seqname);
 573         }
 574
 575         /* Connect to SPI manager */
 576         if ((ret = SPI_connect()) < 0)
 577                 elog(ERROR, "ttdummy (%s): SPI_connect returned %d", relname, ret);
 578
 579         /* Fetch tuple values and nulls */
 580         cvals = (Datum *) palloc(natts * sizeof(Datum));
 581         cnulls = (char *) palloc(natts * sizeof(char));
 582         for (i = 0; i < natts; i++)
 583         {
 584                 cvals[i] = SPI_getbinval((newtuple != NULL) ? newtuple : trigtuple,
 585                                                                  tupdesc, i + 1, &isnull);
 586                 cnulls[i] = (isnull) ? 'n' : ' ';
 587         }
 588
 589         /* change date column(s) */
 590         if (newtuple)                           /* UPDATE */
 591         {
 592                 cvals[attnum[0] - 1] = newoff;  /* start_date eq current date */
 593                 cnulls[attnum[0] - 1] = ' ';
 594                 cvals[attnum[1] - 1] = TTDUMMY_INFINITY;                /* stop_date eq INFINITY */
 595                 cnulls[attnum[1] - 1] = ' ';
 596         }
 597         else
 598 /* DELETE */
 599         {
 600                 cvals[attnum[1] - 1] = newoff;  /* stop_date eq current date */
 601                 cnulls[attnum[1] - 1] = ' ';
 602         }
 603
 604         /* if there is no plan ... */
 605         if (splan == NULL)
 606         {
 607                 void       *pplan;
 608                 Oid                *ctypes;
 609                 char       *query;
 610
 611                 /* allocate space in preparation */
 612                 ctypes = (Oid *) palloc(natts * sizeof(Oid));
 613                 query = (char *) palloc(100 + 16 * natts);
 614
 615                 /*
 616                  * Construct query: INSERT INTO _relation_ VALUES ($1, ...)
 617                  */
 618                 sprintf(query, "INSERT INTO %s VALUES (", relname);
 619                 for (i = 1; i <= natts; i++)
 620                 {
 621                         sprintf(query + strlen(query), "$%d%s",
 622                                         i, (i < natts) ? ", " : ")");
 623                         ctypes[i - 1] = SPI_gettypeid(tupdesc, i);
 624                 }
 625
 626                 /* Prepare plan for query */
 627                 pplan = SPI_prepare(query, natts, ctypes);
 628                 if (pplan == NULL)
 629                         elog(ERROR, "ttdummy (%s): SPI_prepare returned %d", relname, SPI_result);
 630
 631                 pplan = SPI_saveplan(pplan);
 632                 if (pplan == NULL)
 633                         elog(ERROR, "ttdummy (%s): SPI_saveplan returned %d", relname, SPI_result);
 634
 635                 splan = pplan;
 636         }
 637
 638         ret = SPI_execp(splan, cvals, cnulls, 0);
 639
 640         if (ret < 0)
 641                 elog(ERROR, "ttdummy (%s): SPI_execp returned %d", relname, ret);
 642
 643         /* Tuple to return to upper Executor ... */
 644         if (newtuple)                           /* UPDATE */
 645         {
 646                 HeapTuple       tmptuple;
 647
 648                 tmptuple = SPI_copytuple(trigtuple);
 649                 rettuple = SPI_modifytuple(rel, tmptuple, 1, &(attnum[1]), &newoff, NULL);
 650                 SPI_freetuple(tmptuple);
 651         }
 652         else
 653 /* DELETE */
 654                 rettuple = trigtuple;
 655
 656         SPI_finish();                           /* don't forget say Bye to SPI mgr */
 657
 658         pfree(relname);
 659
 660         return PointerGetDatum(rettuple);
 661 }
 662
 663 PG_FUNCTION_INFO_V1(set_ttdummy);
 664
 665 Datum
 666 set_ttdummy(PG_FUNCTION_ARGS)
 667 {
 668         int32           on = PG_GETARG_INT32(0);
 669
 670         if (ttoff)                                      /* OFF currently */
 671         {
 672                 if (on == 0)
 673                         PG_RETURN_INT32(0);
 674
 675                 /* turn ON */
 676                 ttoff = false;
 677                 PG_RETURN_INT32(0);
 678         }
 679
 680         /* ON currently */
 681         if (on != 0)
 682                 PG_RETURN_INT32(1);
 683
 684         /* turn OFF */
 685         ttoff = true;
 686
 687         PG_RETURN_INT32(1);
 688 }
 689
 690
 691 /*
 692  * Type int44 has no real-world use, but the regression tests use it.
 693  * It's a four-element vector of int4's.
 694  */
 695
 696 /*
 697  *              int44in                 - converts "num num ..." to internal form
 698  *
 699  *              Note: Fills any missing positions with zeroes.
 700  */
 701 PG_FUNCTION_INFO_V1(int44in);
 702
 703 Datum
 704 int44in(PG_FUNCTION_ARGS)
 705 {
 706         char       *input_string = PG_GETARG_CSTRING(0);
 707         int32      *result = (int32 *) palloc(4 * sizeof(int32));
 708         int                     i;
 709
 710         i = sscanf(input_string,
 711                            "%d, %d, %d, %d",
 712                            &result[0],
 713                            &result[1],
 714                            &result[2],
 715                            &result[3]);
 716         while (i < 4)
 717                 result[i++] = 0;
 718
 719         PG_RETURN_POINTER(result);
 720 }
 721
 722 /*
 723  *              int44out                - converts internal form to "num num ..."
 724  */
 725 PG_FUNCTION_INFO_V1(int44out);
 726
 727 Datum
 728 int44out(PG_FUNCTION_ARGS)
 729 {
 730         int32      *an_array = (int32 *) PG_GETARG_POINTER(0);
 731         char       *result = (char *) palloc(16 * 4);           /* Allow 14 digits +
 732                                                                                                                  * sign */
 733         int                     i;
 734         char       *walk;
 735
 736         walk = result;
 737         for (i = 0; i < 4; i++)
 738         {
 739                 pg_ltoa(an_array[i], walk);
 740                 while (*++walk != '\0')
 741                         ;
 742                 *walk++ = ' ';
 743         }
 744         *--walk = '\0';
 745         PG_RETURN_CSTRING(result);
 746 }