openldap/servers/slapd/back-ldbm/index.c
Kurt Zeilenga 493b415255 Rework indexing code, removing "autolang" and making
"subtypes" and "lang" default behavior.
2001-12-05 00:06:03 +00:00

345 lines
6.6 KiB
C

/* index.c - routines for dealing with attribute indexes */
/* $OpenLDAP$ */
/*
* Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include <ac/socket.h>
#include "slap.h"
#include "back-ldbm.h"
static slap_mask_t index_mask(
Backend *be,
AttributeDescription *desc,
char **dbname,
struct berval *atname )
{
AttributeType *at;
slap_mask_t mask = 0;
attr_mask( be->be_private, desc, &mask );
if( mask ) {
*atname = desc->ad_cname;
*dbname = desc->ad_cname.bv_val;
return mask;
}
/* If there is a language tag, did we ever index the base
* type? If so, check for mask, otherwise it's not there.
*/
if( slap_ad_is_lang( desc ) && desc != desc->ad_type->sat_ad ) {
/* has language tag */
attr_mask( be->be_private, desc->ad_type->sat_ad, &mask );
if( !( mask & SLAP_INDEX_NOLANG ) ) {
*atname = desc->ad_type->sat_cname;
*dbname = desc->ad_type->sat_cname.bv_val;
return mask;
}
}
/* see if supertype defined mask for its subtypes */
for( at = desc->ad_type; at != NULL ; at = at->sat_sup ) {
/* If no AD, we've never indexed this type */
if (!at->sat_ad)
continue;
attr_mask( be->be_private, at->sat_ad, &mask );
if( mask & SLAP_INDEX_AUTO_SUBTYPES ) {
*atname = desc->ad_type->sat_cname;
*dbname = at->sat_cname.bv_val;
return mask;
}
if( !( mask & SLAP_INDEX_NOSUBTYPES ) ) {
*atname = at->sat_cname;
*dbname = at->sat_cname.bv_val;
return mask;
}
if( mask ) break;
}
return 0;
}
int index_param(
Backend *be,
AttributeDescription *desc,
int ftype,
char **dbnamep,
slap_mask_t *maskp,
struct berval *prefixp )
{
slap_mask_t mask;
char *dbname;
mask = index_mask( be, desc, &dbname, prefixp );
if( mask == 0 ) {
return LDAP_INAPPROPRIATE_MATCHING;
}
switch( ftype ) {
case LDAP_FILTER_PRESENT:
if( IS_SLAP_INDEX( mask, SLAP_INDEX_PRESENT ) ) {
goto done;
}
break;
case LDAP_FILTER_APPROX:
if( IS_SLAP_INDEX( mask, SLAP_INDEX_APPROX ) ) {
goto done;
}
/* fall thru */
case LDAP_FILTER_EQUALITY:
if( IS_SLAP_INDEX( mask, SLAP_INDEX_EQUALITY ) ) {
goto done;
}
break;
case LDAP_FILTER_SUBSTRINGS:
if( IS_SLAP_INDEX( mask, SLAP_INDEX_SUBSTR ) ) {
goto done;
}
break;
default:
return LDAP_OTHER;
}
return LDAP_INAPPROPRIATE_MATCHING;
done:
*dbnamep = dbname;
*maskp = mask;
return LDAP_SUCCESS;
}
static int indexer(
Backend *be,
char *dbname,
struct berval *atname,
struct berval **vals,
ID id,
int op,
slap_mask_t mask )
{
int rc, i;
const char *text;
DBCache *db;
AttributeDescription *ad = NULL;
struct berval **keys;
assert( mask );
rc = slap_bv2ad( atname, &ad, &text );
if( rc != LDAP_SUCCESS ) return rc;
db = ldbm_cache_open( be, dbname, LDBM_SUFFIX, LDBM_WRCREAT );
if ( db == NULL ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "index", LDAP_LEVEL_ERR,
"index_read: Could not open db %s%s\n",
dbname, LDBM_SUFFIX ));
#else
Debug( LDAP_DEBUG_ANY,
"<= index_read NULL (could not open %s%s)\n",
dbname, LDBM_SUFFIX, 0 );
#endif
return LDAP_OTHER;
}
if( IS_SLAP_INDEX( mask, SLAP_INDEX_PRESENT ) ) {
key_change( be, db, atname, id, op );
}
if( IS_SLAP_INDEX( mask, SLAP_INDEX_EQUALITY ) ) {
rc = ad->ad_type->sat_equality->smr_indexer(
LDAP_FILTER_EQUALITY,
mask,
ad->ad_type->sat_syntax,
ad->ad_type->sat_equality,
atname, vals, &keys );
if( rc == LDAP_SUCCESS && keys != NULL ) {
for( i=0; keys[i] != NULL; i++ ) {
key_change( be, db, keys[i], id, op );
}
ber_bvecfree( keys );
}
}
if( IS_SLAP_INDEX( mask, SLAP_INDEX_APPROX ) ) {
rc = ad->ad_type->sat_approx->smr_indexer(
LDAP_FILTER_APPROX,
mask,
ad->ad_type->sat_syntax,
ad->ad_type->sat_approx,
atname, vals, &keys );
if( rc == LDAP_SUCCESS && keys != NULL ) {
for( i=0; keys[i] != NULL; i++ ) {
key_change( be, db, keys[i], id, op );
}
ber_bvecfree( keys );
}
}
if( IS_SLAP_INDEX( mask, SLAP_INDEX_SUBSTR ) ) {
rc = ad->ad_type->sat_substr->smr_indexer(
LDAP_FILTER_SUBSTRINGS,
mask,
ad->ad_type->sat_syntax,
ad->ad_type->sat_substr,
atname, vals, &keys );
if( rc == LDAP_SUCCESS && keys != NULL ) {
for( i=0; keys[i] != NULL; i++ ) {
key_change( be, db, keys[i], id, op );
}
ber_bvecfree( keys );
}
}
ldbm_cache_close( be, db );
return LDAP_SUCCESS;
}
static int index_at_values(
Backend *be,
AttributeType *type,
struct berval *lang,
struct berval **vals,
ID id,
int op,
char ** dbnamep,
slap_mask_t *maskp )
{
slap_mask_t mask = 0;
slap_mask_t tmpmask = 0;
if( type->sat_sup ) {
/* recurse */
(void) index_at_values( be,
type->sat_sup, lang,
vals, id, op,
dbnamep, &tmpmask );
}
/* If this type has no AD, we've never used it before */
if( type->sat_ad ) {
attr_mask( be->be_private, type->sat_ad, &mask );
}
if( mask ) {
*dbnamep = type->sat_cname.bv_val;
} else if ( tmpmask & SLAP_INDEX_AUTO_SUBTYPES ) {
mask = tmpmask;
}
if( mask ) {
indexer( be, *dbnamep,
&type->sat_cname,
vals, id, op,
mask );
}
if( lang->bv_len ) {
char *dbname = NULL;
struct berval lname;
AttributeDescription *desc;
tmpmask = 0;
lname.bv_val = NULL;
desc = ad_find_lang(type, lang);
if( desc ) {
attr_mask( be->be_private, desc, &tmpmask );
}
if( tmpmask ) {
dbname = desc->ad_cname.bv_val;
lname = desc->ad_cname;
mask = tmpmask;
}
if( dbname != NULL ) {
indexer( be, dbname, &lname,
vals, id, op,
mask );
if( !tmpmask ) {
ch_free( lname.bv_val );
}
}
}
return LDAP_SUCCESS;
}
int index_values(
Backend *be,
AttributeDescription *desc,
struct berval **vals,
ID id,
int op )
{
char *dbname = NULL;
slap_mask_t mask;
(void) index_at_values( be,
desc->ad_type, &desc->ad_lang,
vals, id, op,
&dbname, &mask );
return LDAP_SUCCESS;
}
int
index_entry(
Backend *be,
int op,
Entry *e,
Attribute *ap )
{
#ifdef NEW_LOGGING
LDAP_LOG(( "index", LDAP_LEVEL_ENTRY,
"index_entry: %s (%s)%ld\n",
op == SLAP_INDEX_ADD_OP ? "add" : "del",
e->e_dn, e->e_id ));
#else
Debug( LDAP_DEBUG_TRACE, "=> index_entry_%s( %ld, \"%s\" )\n",
op == SLAP_INDEX_ADD_OP ? "add" : "del",
e->e_id, e->e_dn );
#endif
/* add each attribute to the indexes */
for ( ; ap != NULL; ap = ap->a_next ) {
index_values( be, ap->a_desc, ap->a_vals, e->e_id, op );
}
#ifdef NEW_LOGGING
LDAP_LOG(( "index", LDAP_LEVEL_ENTRY,
"index_entry: success\n" ));
#else
Debug( LDAP_DEBUG_TRACE, "<= index_entry_%s( %ld, \"%s\" ) success\n",
op == SLAP_INDEX_ADD_OP ? "add" : "del",
e->e_id, e->e_dn );
#endif
return LDAP_SUCCESS;
}