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ITS#9349 slapd-mdb: optimize index delete

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Performance improvement for indexed attributes removal
This commit is contained in:
Gabriel Buades 2020-09-16 14:11:24 +02:00 committed by Howard Chu
parent 2b512ea79c
commit 984ecd113a
1 changed files with 23 additions and 7 deletions
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30
servers/slapd/back-mdb/modify.c
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@ -449,19 +449,35 @@ do_del:
a2 = attr_find( e->e_attrs, ap->a_desc );
if ( a2 ) {
/* need to detect which values were deleted */
int i, j;
int i, j, k;
/* let add know there were deletes */
if ( a2->a_flags & SLAP_ATTR_IXADD )
a2->a_flags |= SLAP_ATTR_IXDEL;
vals = op->o_tmpalloc( (ap->a_numvals + 1) *
sizeof(struct berval), op->o_tmpmemctx );
j = 0;
for ( i=0; i < ap->a_numvals; i++ ) {
rc = attr_valfind( a2, SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
&ap->a_nvals[i], NULL, op->o_tmpmemctx );
/* Save deleted values */
if ( rc == LDAP_NO_SUCH_ATTRIBUTE )
vals[j++] = ap->a_nvals[i];
for ( i=k=0; i < ap->a_numvals; i++ ) {
char found = 0;
BerValue* current = &ap->a_nvals[i];
int k2 = k;
for (k2 = k ; k2 < a2->a_numvals; k2 ++) {
int match = -1, rc;
const char *text;
rc = ordered_value_match( &match, a2->a_desc,
ap->a_desc->ad_type->sat_equality, 0,
&a2->a_nvals[k2], current, &text );
if ( rc == LDAP_SUCCESS && match == 0 ) {
found = 1;
break;
}
}
if (!found) {
vals[j++] = *current;
} else {
k = k2 + 1;
}
}
BER_BVZERO(vals+j);
} else {