2.11BSD#431 - /usr/ingres/source/iutil/paramd.c

   1: # include   "../ingres.h"
   2: # include   "../aux.h"
   3: # include   "../catalog.h"
   4: # include   "../access.h"
   5: 
   6: 
   7: 
   8: /*
   9: **	get access parameters of a relation from its descriptor and return
  10: **	them in struct pointed to by "ap".
  11: */
  12: 
  13: 
  14: paramd(desc, param)
  15: struct descriptor   *desc;
  16: struct accessparam  *param;
  17: 
  18: {
  19:     register struct descriptor  *d;
  20:     register struct accessparam *ap;
  21:     register int            i;
  22:     int             p;
  23: 
  24:     ap = param;
  25:     d = desc;
  26: 
  27:     ap->mode = getmode(d->relspec);
  28:     ap->sec_index = FALSE;  /* indicate that this isn't the index-rel */
  29: 
  30:     for (i = 0; i < MAXDOM+1; i++)
  31:         ap->keydno[i] = 0;
  32: 
  33:     for (p = 1; p <= d->relatts; p++)
  34:         if (i = d->relxtra[p])
  35:             ap->keydno[i-1] = p;
  36:     return (0);
  37: }
  38: 
  39: parami(ip, param)
  40: struct index        *ip;
  41: struct accessparam  *param;
  42: {
  43:     register struct accessparam *ap;
  44: 
  45:     ap  = param;
  46:     ap->mode = getmode(ip->irelspeci);
  47:     ap->sec_index = TRUE;   /* this is an index */
  48: 
  49:     bmove(ip->idom, ap->keydno, MAXKEYS);
  50:     ap->keydno[MAXKEYS] = 0;
  51:     return(0);
  52: }
  53: 
  54: 
  55: getmode(spec)
  56: int spec;
  57: {
  58:     switch (abs(spec))
  59:     {
  60:       case M_HEAP:
  61:         return(NOKEY);
  62: 
  63:       case M_ISAM:
  64:         return(LRANGEKEY);
  65: 
  66:       case M_HASH:
  67:         return(EXACTKEY);
  68: 
  69:       default:
  70:         syserr("getmode:bad relspec %d", spec);
  71:     }
  72: }

Defined functions