Changeset: 46db239e93e6 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/46db239e93e6
Modified Files:
gdk/gdk_join.c
Branch: default
Log Message:
Extend selectjoin implementation to also do nil_on_miss option.
diffs (134 lines):
diff --git a/gdk/gdk_join.c b/gdk/gdk_join.c
--- a/gdk/gdk_join.c
+++ b/gdk/gdk_join.c
@@ -301,7 +301,7 @@ nomatch(BAT **r1p, BAT **r2p, BAT *l, BA
static gdk_return
selectjoin(BAT **r1p, BAT **r2p, BAT *l, BAT *r,
struct canditer *lci, struct canditer *rci,
- bool nil_matches, bool semi, bool max_one, bool min_one,
+ bool nil_matches, bool nil_on_miss, bool semi, bool max_one, bool
min_one,
lng t0, bool swapped, const char *reason)
{
BATiter li = bat_iterator(l);
@@ -338,26 +338,30 @@ selectjoin(BAT **r1p, BAT **r2p, BAT *l,
}
bncount = BATcount(bn);
if (bncount == 0) {
- BBPunfix(bn->batCacheid);
+ BBPreclaim(bn);
if (min_one) {
GDKerror("not enough matches");
return GDK_FAIL;
}
- return nomatch(r1p, r2p, l, r, lci, false, false,
- reason, t0);
+ if (!nil_on_miss)
+ return nomatch(r1p, r2p, l, r, lci, false, false,
+ reason, t0);
+ /* special case: return nil on RHS */
+ bncount = 1;
+ bn = NULL;
}
if (bncount > 1) {
if (semi)
bncount = 1;
if (max_one) {
- BBPunfix(bn->batCacheid);
+ BBPreclaim(bn);
GDKerror("more than one match");
return GDK_FAIL;
}
}
BAT *r1 = COLnew(0, TYPE_oid, lci->ncand * bncount, TRANSIENT);
if (r1 == NULL) {
- BBPunfix(bn->batCacheid);
+ BBPreclaim(bn);
return GDK_FAIL;
}
r1->tsorted = true;
@@ -368,20 +372,37 @@ selectjoin(BAT **r1p, BAT **r2p, BAT *l,
r1->tnonil = true;
BAT *r2 = NULL;
if (r2p) {
- r2 = COLnew(0, TYPE_oid, lci->ncand * bncount, TRANSIENT);
+ if (bn)
+ r2 = COLnew(0, TYPE_oid, lci->ncand * bncount,
TRANSIENT);
+ else
+ r2 = BATconstant(0, TYPE_void, &oid_nil, lci->ncand *
bncount, TRANSIENT);
if (r2 == NULL) {
- BBPunfix(bn->batCacheid);
+ BBPreclaim(bn);
BBPreclaim(r1);
return GDK_FAIL;
}
- r2->tsorted = lci->ncand == 1 || bncount == 1;
- r2->trevsorted = bncount == 1;
- r2->tseqbase = lci->ncand == 1 && BATtdense(bn) ? bn->tseqbase
: oid_nil;
- r2->tkey = lci->ncand == 1;
- r2->tnil = false;
- r2->tnonil = true;
+ if (bn) {
+ r2->tsorted = lci->ncand == 1 || bncount == 1;
+ r2->trevsorted = bncount == 1;
+ r2->tseqbase = lci->ncand == 1 && BATtdense(bn) ?
bn->tseqbase : oid_nil;
+ r2->tkey = lci->ncand == 1;
+ r2->tnil = false;
+ r2->tnonil = true;
+ }
}
- if (BATtdense(bn)) {
+ if (bn == NULL) {
+ oid *o1p = (oid *) Tloc(r1, 0);
+ BUN p, q = bncount;
+
+ do {
+ GDK_CHECK_TIMEOUT(timeoffset, counter,
+ GOTO_LABEL_TIMEOUT_HANDLER(bailout));
+ for (p = 0; p < q; p++) {
+ *o1p++ = o;
+ }
+ o = canditer_next(lci);
+ } while (!is_oid_nil(o));
+ } else if (BATtdense(bn)) {
oid *o1p = (oid *) Tloc(r1, 0);
oid *o2p = r2 ? (oid *) Tloc(r2, 0) : NULL;
oid bno = bn->tseqbase;
@@ -422,11 +443,11 @@ selectjoin(BAT **r1p, BAT **r2p, BAT *l,
}
BATsetcount(r1, lci->ncand * bncount);
*r1p = r1;
- if (r2p) {
+ if (bn && r2p) {
BATsetcount(r2, lci->ncand * bncount);
*r2p = r2;
}
- BBPunfix(bn->batCacheid);
+ BBPreclaim(bn);
TRC_DEBUG(ALGO, "l=" ALGOBATFMT ","
"r=" ALGOBATFMT ",sl=" ALGOOPTBATFMT ","
"sr=" ALGOOPTBATFMT ",nil_matches=%s;%s %s "
@@ -3886,7 +3907,7 @@ leftjoin(BAT **r1p, BAT **r2p, BAT *l, B
(l->ttype == TYPE_void && is_oid_nil(l->tseqbase)))) {
/* single value to join, use select */
rc = selectjoin(r1p, r2p, l, r, &lci, &rci,
- nil_matches, semi, max_one, min_one,
+ nil_matches, nil_on_miss, semi, max_one,
min_one,
t0, false, func);
goto doreturn;
} else if (BATtdense(r) && rci.tpe == cand_dense) {
@@ -4256,13 +4277,13 @@ BATjoin(BAT **r1p, BAT **r2p, BAT *l, BA
if (lci.ncand == 1 || (BATordered(l) && BATordered_rev(l)) || (l->ttype
== TYPE_void && is_oid_nil(l->tseqbase))) {
/* single value to join, use select */
rc = selectjoin(r1p, r2p, l, r, &lci, &rci,
- nil_matches, false, false, false,
+ nil_matches, false, false, false, false,
t0, false, __func__);
goto doreturn;
} else if (rci.ncand == 1 || (BATordered(r) && BATordered_rev(r)) ||
(r->ttype == TYPE_void && is_oid_nil(r->tseqbase))) {
/* single value to join, use select */
rc = selectjoin(r2p ? r2p : &r2, r1p, r, l, &rci, &lci,
- nil_matches, false, false, false,
+ nil_matches, false, false, false, false,
t0, true, __func__);
if (rc == GDK_SUCCEED && r2p == NULL)
BBPunfix(r2->batCacheid);
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