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Optimize modify_internal, only reindex the actual modified values, not

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the entire attribute.
This commit is contained in:
Howard Chu 2003-05-13 03:09:48 +00:00
parent 9e8bbf129f
commit 190f161d74
1 changed files with 63 additions and 43 deletions
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102
servers/slapd/back-bdb/modify.c
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@ -14,6 +14,9 @@
#include "back-bdb.h"
#include "external.h"
#define INDEXED 0x2000
#define NULLIFIED 0x4000
int bdb_modify_internal(
Operation *op,
DB_TXN *tid,
@ -171,17 +174,6 @@ int bdb_modify_internal(
if ( mod->sm_desc == slap_schema.si_ad_objectClass ) {
e->e_ocflags = 0;
}
/* check if modified attribute was indexed
* but not in case of NOOP... */
err = bdb_index_is_indexed( op->o_bd, mod->sm_desc );
if ( err == LDAP_SUCCESS && !op->o_noop ) {
ap = attr_find( save_attrs, mod->sm_desc );
if ( ap ) ap->a_flags |= SLAP_ATTR_IXDEL;
ap = attr_find( e->e_attrs, mod->sm_desc );
if ( ap ) ap->a_flags |= SLAP_ATTR_IXADD;
}
}
/* check that the entry still obeys the schema */
@ -207,52 +199,80 @@ int bdb_modify_internal(
}
/* update the indices of the modified attributes */
if ( !op->o_noop ) {
Modifications *m2;
/* start with deleting the old index entries */
for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
if ( ap->a_flags & SLAP_ATTR_IXDEL ) {
/* First look for any deletes that would nullify any adds
* in this request. I.e., deleting an entire attribute after
* assigning some values to it.
*/
for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
if (bdb_index_is_indexed( op->o_bd, ml->sml_desc ))
continue;
switch ( ml->sml_op ) {
case LDAP_MOD_DELETE:
/* If just deleting specific values, ignore */
if ( ml->sml_bvalues ) break;
case LDAP_MOD_REPLACE:
for ( m2 = modlist; m2 != ml; m2 = m2->sml_next ) {
if ( m2->sml_desc == ml->sml_desc &&
m2->sml_op != LDAP_MOD_DELETE )
m2->sml_op |= NULLIFIED;
}
break;
}
ml->sml_op |= INDEXED;
}
/* Now index the modifications */
for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
if ( ! (ml->sml_op & INDEXED) ) continue;
ml->sml_op ^= INDEXED;
switch ( ml->sml_op ) {
case LDAP_MOD_DELETE:
if ( ml->sml_bvalues ) {
rc = bdb_index_values( op, tid, ml->sml_desc,
ml->sml_nvalues ? ml->sml_nvalues : ml->sml_bvalues,
e->e_id, SLAP_INDEX_DELETE_OP );
break;
}
/* FALLTHRU */
case LDAP_MOD_REPLACE:
/* A nullified replace still does its delete action */
case LDAP_MOD_REPLACE | NULLIFIED:
ap = attr_find( save_attrs, ml->sml_desc );
rc = bdb_index_values( op, tid, ap->a_desc,
ap->a_nvals,
e->e_id, SLAP_INDEX_DELETE_OP );
if ( rc != LDAP_SUCCESS ) {
attrs_free( e->e_attrs );
e->e_attrs = save_attrs;
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ERR,
"bdb_modify_internal: attribute index delete failure\n",
0, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"Attribute index delete failure",
0, 0, 0 );
#endif
return rc;
}
ap->a_flags &= ~SLAP_ATTR_IXDEL;
}
}
/* add the new index entries */
for ( ap = e->e_attrs; ap != NULL; ap = ap->a_next ) {
if (ap->a_flags & SLAP_ATTR_IXADD) {
rc = bdb_index_values( op, tid, ap->a_desc,
ap->a_nvals,
if ( rc || ml->sml_op == LDAP_MOD_DELETE ||
(ml->sml_op & NULLIFIED))
break;
/* FALLTHRU */
case LDAP_MOD_ADD:
case SLAP_MOD_SOFTADD:
rc = bdb_index_values( op, tid, ml->sml_desc,
ml->sml_nvalues ? ml->sml_nvalues : ml->sml_bvalues,
e->e_id, SLAP_INDEX_ADD_OP );
break;
}
ml->sml_op &= ~NULLIFIED;
if ( rc != LDAP_SUCCESS ) {
attrs_free( e->e_attrs );
e->e_attrs = save_attrs;
#ifdef NEW_LOGGING
LDAP_LOG ( OPERATION, ERR,
"bdb_modify_internal: attribute index add failure\n",
"bdb_modify_internal: attribute index update failure\n",
0, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"Attribute index add failure",
"Attribute index update failure",
0, 0, 0 );
#endif
return rc;
/* reset our flags */
for (; ml; ml=ml->sml_next ) {
ml->sml_op &= ~(INDEXED | NULLIFIED);
}
break;
}
ap->a_flags &= ~SLAP_ATTR_IXADD;
}
}