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Updates to make GIST work with multi-key indexes (from Oleg Bartunov

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and Teodor Sigaev).  Declare key values as Datum where appropriate,
rather than char* (Tom Lane).
This commit is contained in:
Tom Lane
2001-05-31 18:16:55 +00:00
parent e1107fc285
commit 3043810d97
9 changed files with 842 additions and 438 deletions
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61
contrib/seg/seg.c
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@ -225,9 +225,9 @@ gseg_consistent(GISTENTRY *entry,
* gseg_leaf_consistent
*/
if (GIST_LEAF(entry))
return (gseg_leaf_consistent((SEG *) (entry->pred), query, strategy));
return (gseg_leaf_consistent((SEG *) DatumGetPointer(entry->key), query, strategy));
else
return (gseg_internal_consistent((SEG *) (entry->pred), query, strategy));
return (gseg_internal_consistent((SEG *) DatumGetPointer(entry->key), query, strategy));
}
/*
@ -247,22 +247,14 @@ gseg_union(bytea *entryvec, int *sizep)
#endif
numranges = (VARSIZE(entryvec) - VARHDRSZ) / sizeof(GISTENTRY);
tmp = (SEG *) (((GISTENTRY *) (VARDATA(entryvec)))[0]).pred;
tmp = (SEG *) DatumGetPointer(((GISTENTRY *) VARDATA(entryvec))[0].key);
*sizep = sizeof(SEG);
for (i = 1; i < numranges; i++)
{
out = gseg_binary_union(tmp, (SEG *)
(((GISTENTRY *) (VARDATA(entryvec)))[i]).pred,
DatumGetPointer(((GISTENTRY *) VARDATA(entryvec))[i].key),
sizep);
#ifdef GIST_DEBUG
/*
* fprintf(stderr, "\t%s ^ %s -> %s\n", seg_out(tmp), seg_out((SEG
* *)(((GISTENTRY *)(VARDATA(entryvec)))[i]).pred), seg_out(out));
*/
#endif
if (i > 1)
pfree(tmp);
tmp = out;
@ -294,15 +286,16 @@ gseg_decompress(GISTENTRY *entry)
float *
gseg_penalty(GISTENTRY *origentry, GISTENTRY *newentry, float *result)
{
Datum ud;
SEG *ud;
float tmp1,
tmp2;
ud = (Datum) seg_union((SEG *) (origentry->pred), (SEG *) (newentry->pred));
rt_seg_size((SEG *) ud, &tmp1);
rt_seg_size((SEG *) (origentry->pred), &tmp2);
ud = seg_union((SEG *) DatumGetPointer(origentry->key),
(SEG *) DatumGetPointer(newentry->key));
rt_seg_size(ud, &tmp1);
rt_seg_size((SEG *) DatumGetPointer(origentry->key), &tmp2);
*result = tmp1 - tmp2;
pfree((char *) ud);
pfree(ud);
#ifdef GIST_DEBUG
fprintf(stderr, "penalty\n");
@ -362,16 +355,16 @@ gseg_picksplit(bytea *entryvec,
for (i = FirstOffsetNumber; i < maxoff; i = OffsetNumberNext(i))
{
datum_alpha = (SEG *) (((GISTENTRY *) (VARDATA(entryvec)))[i].pred);
datum_alpha = (SEG *) DatumGetPointer(((GISTENTRY *) VARDATA(entryvec))[i].key);
for (j = OffsetNumberNext(i); j <= maxoff; j = OffsetNumberNext(j))
{
datum_beta = (SEG *) (((GISTENTRY *) (VARDATA(entryvec)))[j].pred);
datum_beta = (SEG *) DatumGetPointer(((GISTENTRY *) VARDATA(entryvec))[j].key);
/* compute the wasted space by unioning these guys */
/* size_waste = size_union - size_inter; */
union_d = (SEG *) seg_union(datum_alpha, datum_beta);
union_d = seg_union(datum_alpha, datum_beta);
rt_seg_size(union_d, &size_union);
inter_d = (SEG *) seg_inter(datum_alpha, datum_beta);
inter_d = seg_inter(datum_alpha, datum_beta);
rt_seg_size(inter_d, &size_inter);
size_waste = size_union - size_inter;
@ -400,12 +393,12 @@ gseg_picksplit(bytea *entryvec,
right = v->spl_right;
v->spl_nright = 0;
datum_alpha = (SEG *) (((GISTENTRY *) (VARDATA(entryvec)))[seed_1].pred);
datum_l = (SEG *) seg_union(datum_alpha, datum_alpha);
rt_seg_size((SEG *) datum_l, &size_l);
datum_beta = (SEG *) (((GISTENTRY *) (VARDATA(entryvec)))[seed_2].pred);;
datum_r = (SEG *) seg_union(datum_beta, datum_beta);
rt_seg_size((SEG *) datum_r, &size_r);
datum_alpha = (SEG *) DatumGetPointer(((GISTENTRY *) VARDATA(entryvec))[seed_1].key);
datum_l = seg_union(datum_alpha, datum_alpha);
rt_seg_size(datum_l, &size_l);
datum_beta = (SEG *) DatumGetPointer(((GISTENTRY *) VARDATA(entryvec))[seed_2].key);
datum_r = seg_union(datum_beta, datum_beta);
rt_seg_size(datum_r, &size_r);
/*
* Now split up the regions between the two seeds. An important
@ -443,11 +436,11 @@ gseg_picksplit(bytea *entryvec,
}
/* okay, which page needs least enlargement? */
datum_alpha = (SEG *) (((GISTENTRY *) (VARDATA(entryvec)))[i].pred);
union_dl = (SEG *) seg_union(datum_l, datum_alpha);
union_dr = (SEG *) seg_union(datum_r, datum_alpha);
rt_seg_size((SEG *) union_dl, &size_alpha);
rt_seg_size((SEG *) union_dr, &size_beta);
datum_alpha = (SEG *) DatumGetPointer(((GISTENTRY *) VARDATA(entryvec))[i].key);
union_dl = seg_union(datum_l, datum_alpha);
union_dr = seg_union(datum_r, datum_alpha);
rt_seg_size(union_dl, &size_alpha);
rt_seg_size(union_dr, &size_beta);
/* pick which page to add it to */
if (size_alpha - size_l < size_beta - size_r)
@ -471,8 +464,8 @@ gseg_picksplit(bytea *entryvec,
}
*left = *right = FirstOffsetNumber; /* sentinel value, see dosplit() */
v->spl_ldatum = (char *) datum_l;
v->spl_rdatum = (char *) datum_r;
v->spl_ldatum = PointerGetDatum(datum_l);
v->spl_rdatum = PointerGetDatum(datum_r);
return v;
}