database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-26 23:43:30 +03:00
Code Activity

Please apply patches for contrib/ltree.

Browse Source 
ltree_73.patch.gz - for 7.3 :
        Fix ~ operation bug: eg '1.1.1' ~ '*.1'

ltree_74.patch.gz - for current CVS
    Fix ~ operation bug: eg '1.1.1' ~ '*.1'
    Add ? operation
    Optimize index storage

Last change needs drop/create all ltree indexes, so only for 7.4

Teodor Sigaev
This commit is contained in:
Bruce Momjian
2003-02-19 03:50:49 +00:00
parent c89000f346
commit 00cb9384a1
3 changed files with 57 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
contrib/ltree/lquery_op.c
View File

@@ -39,7 +39,7 @@ getlexem(char *start, char *end, int *len)
}
bool
compare_subnode(ltree_level * t, char *qn, int len, int (*cmpptr) (const char *, const char *, size_t), bool anyend)
compare_subnode(ltree_level * t, char *qn, int len, int (*cmpptr) (const char *, const char *, size_t), bool anyend)
{
char *endt = t->name + t->len;
char *endq = qn + len;
@@ -117,6 +117,11 @@ printFieldNot(FieldNot *fn ) {
}
*/
static struct {
bool muse;
uint32 high_pos;
} SomeStack = {false,0,};
static bool
checkCond(lquery_level * curq, int query_numlevel, ltree_level * curt, int tree_numlevel, FieldNot * ptr)
{
@@ -129,6 +134,14 @@ checkCond(lquery_level * curq, int query_numlevel, ltree_level * curt, int tree_
lquery_level *prevq = NULL;
ltree_level *prevt = NULL;
if ( SomeStack.muse ) {
high_pos = SomeStack.high_pos;
qlen--;
prevq = curq;
curq = LQL_NEXT(curq);
SomeStack.muse = false;
}
while (tlen > 0 && qlen > 0)
{
if (curq->numvar)
@@ -181,6 +194,15 @@ checkCond(lquery_level * curq, int query_numlevel, ltree_level * curt, int tree_
curt = LEVEL_NEXT(curt);
tlen--;
cur_tpos++;
if ( isok && prevq && prevq->numvar==0 && tlen>0 && cur_tpos <= high_pos ) {
FieldNot tmpptr;
if ( ptr )
memcpy(&tmpptr,ptr,sizeof(FieldNot));
SomeStack.high_pos = high_pos-cur_tpos;
SomeStack.muse = true;
if ( checkCond(prevq, qlen+1, curt, tlen, (ptr) ? &tmpptr : NULL) )
return true;
}
if (!isok && ptr)
ptr->nt++;
}