Changeset: 659e30e1ef14 for MonetDB
URL: http://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=659e30e1ef14
Modified Files:
gdk/gdk_bat.mx
Branch: Apr2012
Log Message:
Keep the key property a bit longer when appending to a BAT.
If we're appending the second value to a BAT, and the value is smaller
than the first, indicate that the column is reverse sorted and keep
the key property.
diffs (27 lines):
diff --git a/gdk/gdk_bat.mx b/gdk/gdk_bat.mx
--- a/gdk/gdk_bat.mx
+++ b/gdk/gdk_bat.mx
@@ -1432,6 +1432,10 @@ BUNappend(BAT *b, ptr t, bit force)
b->tdense = FALSE;
b->T->nodense = i;
}
+ if (b->batCount == 1) {
+ b->tsorted = GDK_SORTED_REV;
+ goto revsorted;
+ }
} else if (cmp && b->tdense && *(oid *) t != 1
+ *(oid *) prv) {
b->T->nodense = i;
b->tdense = FALSE;
@@ -1460,8 +1464,10 @@ BUNappend(BAT *b, ptr t, bit force)
b->tkey = bm->hkey = b->tdense = FALSE;
}
} else if (b->tsorted == (bit) GDK_SORTED_REV) {
- ptr prv = BUNtail(bi, p - 1);
-
+ ptr prv;
+
+ revsorted:
+ prv = BUNtail(bi, p - 1);
cmp = atom_CMP(t, prv, b->ttype);
if (cmp > 0) {
b->T->nosorted_rev = i;
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