openldap/servers/slapd/back-bdb/index.c
2001-10-04 22:29:34 +00:00

377 lines
7.2 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-bdb.h"
#ifdef BDB_INDEX
static slap_mask_t index_mask(
Backend *be,
AttributeDescription *desc,
char **dbname,
char **atname )
{
AttributeType *at;
slap_mask_t mask = 0;
/* we do not support indexing of binary attributes */
if( slap_ad_is_binary( desc ) ) return 0;
bdb_attr_mask( be->be_private, desc->ad_cname->bv_val, &mask );
if( mask ) {
*atname = desc->ad_cname->bv_val;
*dbname = desc->ad_cname->bv_val;
return mask;
}
if( slap_ad_is_lang( desc ) ) {
/* has language tag */
bdb_attr_mask( be->be_private, desc->ad_type->sat_cname, &mask );
if( mask & SLAP_INDEX_AUTO_LANG ) {
*atname = desc->ad_cname->bv_val;
*dbname = desc->ad_type->sat_cname;
return mask;
}
if( mask & SLAP_INDEX_LANG ) {
*atname = desc->ad_type->sat_cname;
*dbname = desc->ad_type->sat_cname;
return mask;
}
}
/* see if supertype defined mask for its subtypes */
for( at = desc->ad_type; at != NULL ; at = at->sat_sup ) {
bdb_attr_mask( be->be_private, at->sat_cname, &mask );
if( mask & SLAP_INDEX_AUTO_SUBTYPES ) {
*atname = desc->ad_type->sat_cname;
*dbname = at->sat_cname;
return mask;
}
if( mask & SLAP_INDEX_SUBTYPES ) {
*atname = at->sat_cname;
*dbname = at->sat_cname;
return mask;
}
if( mask ) break;
}
return 0;
}
int bdb_index_param(
Backend *be,
AttributeDescription *desc,
int ftype,
char **dbnamep,
slap_mask_t *maskp,
struct berval **prefixp )
{
slap_mask_t mask;
char *dbname;
char *atname;
mask = index_mask( be, desc, &dbname, &atname );
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;
*prefixp = ber_bvstrdup( atname );
*maskp = mask;
return LDAP_SUCCESS;
}
static int indexer(
Backend *be,
DB_TXN *txn,
char *dbname,
char *atname,
struct berval **vals,
ID id,
int op,
slap_mask_t mask )
{
int rc, i;
const char *text;
DB *db;
AttributeDescription *ad = NULL;
struct berval **keys;
struct berval prefix;
assert( mask );
rc = slap_str2ad( atname, &ad, &text );
if( rc != LDAP_SUCCESS ) return rc;
prefix.bv_val = atname;
prefix.bv_len = strlen( atname );
rc = bdb_db_cache( be, dbname, &db );
if ( rc != LDAP_SUCCESS ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "index", LDAP_LEVEL_ERR,
"bdb_index_read: Could not open DB %s\n", dbname));
#else
Debug( LDAP_DEBUG_ANY,
"<= bdb_index_read NULL (could not open %s)\n",
dbname, 0, 0 );
#endif
ad_free( ad, 1 );
return LDAP_OTHER;
}
if( IS_SLAP_INDEX( mask, SLAP_INDEX_PRESENT ) ) {
rc = bdb_key_change( be, db, txn, &prefix, 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,
&prefix, vals, &keys );
if( rc == LDAP_SUCCESS && keys != NULL ) {
for( i=0; keys[i] != NULL; i++ ) {
rc = bdb_key_change( be, db, txn, 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,
&prefix, vals, &keys );
if( rc == LDAP_SUCCESS && keys != NULL ) {
for( i=0; keys[i] != NULL; i++ ) {
rc = bdb_key_change( be, db, txn, 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,
&prefix, vals, &keys );
if( rc == LDAP_SUCCESS && keys != NULL ) {
for( i=0; keys[i] != NULL; i++ ) {
bdb_key_change( be, db, txn, keys[i], id, op );
}
ber_bvecfree( keys );
}
}
ad_free( ad, 1 );
return LDAP_SUCCESS;
}
static int index_at_values(
Backend *be,
DB_TXN *txn,
AttributeType *type,
const char *lang,
struct berval **vals,
ID id,
int op,
char ** dbnamep,
slap_mask_t *maskp )
{
int rc;
slap_mask_t mask;
slap_mask_t tmpmask = 0;
int lindex = 0;
if( type->sat_sup ) {
/* recurse */
rc = index_at_values( be, txn,
type->sat_sup, lang,
vals, id, op,
dbnamep, &tmpmask );
}
bdb_attr_mask( be->be_private, type->sat_cname, &mask );
if( mask ) {
*dbnamep = type->sat_cname;
} else if ( tmpmask & SLAP_INDEX_AUTO_SUBTYPES ) {
mask = tmpmask;
}
if( mask ) {
rc = indexer( be, txn, *dbnamep,
type->sat_cname,
vals, id, op,
mask );
}
if( lang ) {
char *dbname = NULL;
size_t tlen = strlen( type->sat_cname );
size_t llen = strlen( lang );
char *lname = ch_malloc( tlen + llen + sizeof(";") );
sprintf( lname, "%s;%s", type->sat_cname, lang );
bdb_attr_mask( be->be_private, lname, &tmpmask );
if( tmpmask ) {
dbname = lname;
} else if ( mask & SLAP_INDEX_AUTO_LANG ) {
dbname = *dbnamep;
tmpmask = mask;
}
if( dbname != NULL ) {
rc = indexer( be, txn, dbname, lname,
vals, id, op,
tmpmask );
}
ch_free( lname );
}
return LDAP_SUCCESS;
}
int bdb_index_values(
Backend *be,
DB_TXN *txn,
AttributeDescription *desc,
struct berval **vals,
ID id,
int op )
{
int rc;
char *dbname = NULL;
slap_mask_t mask;
if( slap_ad_is_binary( desc ) ) {
/* binary attributes have no index capabilities */
return LDAP_SUCCESS;
}
rc = index_at_values( be, txn,
desc->ad_type, desc->ad_lang,
vals, id, op,
&dbname, &mask );
return rc;
}
int
bdb_index_entry(
Backend *be,
DB_TXN *txn,
int op,
Entry *e,
Attribute *ap )
{
int rc;
#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 ) {
rc = bdb_index_values( be, txn,
ap->a_desc, ap->a_vals, e->e_id, op );
if( rc != LDAP_SUCCESS ) {
#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 rc;
}
}
#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;
}
#endif