]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/back-bdb/filterindex.c
Sync with HEAD as of 14-March-2004
[openldap] / servers / slapd / back-bdb / filterindex.c
index 80354a7b8ba094afb12ea204e8141716ca11893e..47e5728fbd817cfd4bb2eb36043ee6dbfb011463 100644 (file)
@@ -1,8 +1,17 @@
 /* filterindex.c - generate the list of candidate entries from a filter */
 /* $OpenLDAP$ */
-/*
- * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2004 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
  */
 
 #include "portable.h"
 #include "idl.h"
 
 static int presence_candidates(
-       Backend *be,
+       Operation *op,
        AttributeDescription *desc,
        ID *ids );
 
 static int equality_candidates(
-       Backend *be,
+       Operation *op,
        AttributeAssertion *ava,
        ID *ids,
        ID *tmp );
 static int approx_candidates(
-       Backend *be,
+       Operation *op,
        AttributeAssertion *ava,
        ID *ids,
        ID *tmp );
 static int substring_candidates(
-       Backend *be,
+       Operation *op,
        SubstringsAssertion *sub,
        ID *ids,
        ID *tmp );
 
 static int list_candidates(
-       Backend *be,
+       Operation *op,
        Filter *flist,
        int ftype,
        ID *ids,
@@ -44,13 +53,13 @@ static int list_candidates(
 
 int
 bdb_filter_candidates(
-       Backend *be,
+       Operation *op,
        Filter  *f,
        ID *ids,
        ID *tmp,
        ID *stack )
 {
-       int rc = -1;
+       int rc = 0;
 #ifdef NEW_LOGGING
        LDAP_LOG ( INDEX, ENTRY, "=> bdb_filter_candidates\n", 0, 0, 0 );
 #else
@@ -58,13 +67,34 @@ bdb_filter_candidates(
 #endif
 
        switch ( f->f_choice ) {
+       case SLAPD_FILTER_COMPUTED:
+               switch( f->f_result ) {
+               case SLAPD_COMPARE_UNDEFINED:
+               /* This technically is not the same as FALSE, but it
+                * certainly will produce no matches.
+                */
+               /* FALLTHRU */
+               case LDAP_COMPARE_FALSE:
+                       BDB_IDL_ZERO( ids );
+                       break;
+               case LDAP_COMPARE_TRUE: {
+                       struct bdb_info *bdb = (struct bdb_info *)op->o_bd->be_private;
+                       BDB_IDL_ALL( bdb, ids );
+                       } break;
+               case LDAP_SUCCESS:
+               /* this is a pre-computed scope, leave it alone */
+                       break;
+               }
+               break;
+#if 0  /* Not used any more, search calls bdb_dn2idl directly */
        case SLAPD_FILTER_DN_ONE:
 #ifdef NEW_LOGGING
                LDAP_LOG ( INDEX, ARGS, "=> bdb_filter_candidates: \tDN ONE\n", 0, 0, 0 );
 #else
                Debug( LDAP_DEBUG_FILTER, "\tDN ONE\n", 0, 0, 0 );
 #endif
-               rc = bdb_dn2idl( be, f->f_dn, DN_ONE_PREFIX, ids );
+               rc = bdb_dn2idl( op->o_bd, f->f_dn, DN_ONE_PREFIX, ids,
+                       stack, op->o_tmpmemctx );
                if( rc == DB_NOTFOUND ) {
                        BDB_IDL_ZERO( ids );
                        rc = 0;
@@ -77,16 +107,17 @@ bdb_filter_candidates(
 #else
                Debug( LDAP_DEBUG_FILTER, "\tDN SUBTREE\n", 0, 0, 0 );
 #endif
-               rc = bdb_dn2idl( be, f->f_dn, DN_SUBTREE_PREFIX, ids );
+               rc = bdb_dn2idl( op->o_bd, f->f_dn, DN_SUBTREE_PREFIX, ids,
+                       stack, op->o_tmpmemctx );
                break;
-
+#endif
        case LDAP_FILTER_PRESENT:
 #ifdef NEW_LOGGING
                LDAP_LOG ( INDEX, ARGS, "=> bdb_filter_candidates: \tPRESENT\n", 0, 0, 0 );
 #else
                Debug( LDAP_DEBUG_FILTER, "\tPRESENT\n", 0, 0, 0 );
 #endif
-               rc = presence_candidates( be, f->f_desc, ids );
+               rc = presence_candidates( op, f->f_desc, ids );
                break;
 
        case LDAP_FILTER_EQUALITY:
@@ -95,7 +126,7 @@ bdb_filter_candidates(
 #else
                Debug( LDAP_DEBUG_FILTER, "\tEQUALITY\n", 0, 0, 0 );
 #endif
-               rc = equality_candidates( be, f->f_ava, ids, tmp );
+               rc = equality_candidates( op, f->f_ava, ids, tmp );
                break;
 
        case LDAP_FILTER_APPROX:
@@ -104,7 +135,7 @@ bdb_filter_candidates(
 #else
                Debug( LDAP_DEBUG_FILTER, "\tAPPROX\n", 0, 0, 0 );
 #endif
-               rc = approx_candidates( be, f->f_ava, ids, tmp );
+               rc = approx_candidates( op, f->f_ava, ids, tmp );
                break;
 
        case LDAP_FILTER_SUBSTRINGS:
@@ -113,7 +144,7 @@ bdb_filter_candidates(
 #else
                Debug( LDAP_DEBUG_FILTER, "\tSUBSTRINGS\n", 0, 0, 0 );
 #endif
-               rc = substring_candidates( be, f->f_sub, ids, tmp );
+               rc = substring_candidates( op, f->f_sub, ids, tmp );
                break;
 
        case LDAP_FILTER_GE:
@@ -123,7 +154,7 @@ bdb_filter_candidates(
 #else
                Debug( LDAP_DEBUG_FILTER, "\tGE\n", 0, 0, 0 );
 #endif
-               rc = presence_candidates( be, f->f_ava->aa_desc, ids );
+               rc = presence_candidates( op, f->f_ava->aa_desc, ids );
                break;
 
        case LDAP_FILTER_LE:
@@ -133,7 +164,7 @@ bdb_filter_candidates(
 #else
                Debug( LDAP_DEBUG_FILTER, "\tLE\n", 0, 0, 0 );
 #endif
-               rc = presence_candidates( be, f->f_ava->aa_desc, ids );
+               rc = presence_candidates( op, f->f_ava->aa_desc, ids );
                break;
 
        case LDAP_FILTER_NOT:
@@ -143,6 +174,9 @@ bdb_filter_candidates(
 #else
                Debug( LDAP_DEBUG_FILTER, "\tNOT\n", 0, 0, 0 );
 #endif
+               { struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
+               BDB_IDL_ALL( bdb, ids );
+               }
                break;
 
        case LDAP_FILTER_AND:
@@ -151,7 +185,7 @@ bdb_filter_candidates(
 #else
                Debug( LDAP_DEBUG_FILTER, "\tAND\n", 0, 0, 0 );
 #endif
-               rc = list_candidates( be
+               rc = list_candidates( op
                        f->f_and, LDAP_FILTER_AND, ids, tmp, stack );
                break;
 
@@ -161,7 +195,7 @@ bdb_filter_candidates(
 #else
                Debug( LDAP_DEBUG_FILTER, "\tOR\n", 0, 0, 0 );
 #endif
-               rc = list_candidates( be
+               rc = list_candidates( op
                        f->f_or, LDAP_FILTER_OR, ids, tmp, stack );
                break;
 
@@ -172,6 +206,10 @@ bdb_filter_candidates(
                Debug( LDAP_DEBUG_FILTER, "\tUNKNOWN %lu\n",
                        (unsigned long) f->f_choice, 0, 0 );
 #endif
+               /* Must not return NULL, otherwise extended filters break */
+               { struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
+               BDB_IDL_ALL( bdb, ids );
+               }
        }
 
 #ifdef NEW_LOGGING
@@ -191,14 +229,14 @@ bdb_filter_candidates(
 
 static int
 list_candidates(
-       Backend *be,
+       Operation *op,
        Filter  *flist,
        int             ftype,
        ID *ids,
        ID *tmp,
        ID *save )
 {
-       struct bdb_info *bdb = (struct bdb_info *) be->be_private;
+       struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
        int rc = 0;
        Filter  *f;
 
@@ -207,16 +245,14 @@ list_candidates(
 #else
        Debug( LDAP_DEBUG_FILTER, "=> bdb_list_candidates 0x%x\n", ftype, 0, 0 );
 #endif
-
-       if ( ftype == LDAP_FILTER_OR ) {
-               BDB_IDL_ALL( bdb, save );
-               BDB_IDL_ZERO( ids );
-       } else {
-               BDB_IDL_CPY( save, ids );
-       }
-
        for ( f = flist; f != NULL; f = f->f_next ) {
-               rc = bdb_filter_candidates( be, f, save, tmp,
+               /* ignore precomputed scopes */
+               if ( f->f_choice == SLAPD_FILTER_COMPUTED &&
+                    f->f_result == LDAP_SUCCESS ) {
+                       continue;
+               }
+               BDB_IDL_ZERO( save );
+               rc = bdb_filter_candidates( op, f, save, tmp,
                        save+BDB_IDL_UM_SIZE );
 
                if ( rc != 0 ) {
@@ -226,14 +262,22 @@ list_candidates(
                        }
                        break;
                }
+
                
                if ( ftype == LDAP_FILTER_AND ) {
-                       bdb_idl_intersection( ids, save );
+                       if ( f == flist ) {
+                               BDB_IDL_CPY( ids, save );
+                       } else {
+                               bdb_idl_intersection( ids, save );
+                       }
                        if( BDB_IDL_IS_ZERO( ids ) )
                                break;
                } else {
-                       bdb_idl_union( ids, save );
-                       BDB_IDL_ALL( bdb, save );
+                       if ( f == flist ) {
+                               BDB_IDL_CPY( ids, save );
+                       } else {
+                               bdb_idl_union( ids, save );
+                       }
                }
        }
 
@@ -266,11 +310,11 @@ list_candidates(
 
 static int
 presence_candidates(
-       Backend *be,
+       Operation *op,
        AttributeDescription *desc,
        ID *ids )
 {
-       struct bdb_info *bdb = (struct bdb_info *) be->be_private;
+       struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
        DB *db;
        int rc;
        slap_mask_t mask;
@@ -284,12 +328,13 @@ presence_candidates(
                        desc->ad_cname.bv_val, 0, 0 );
 #endif
 
+       BDB_IDL_ALL( bdb, ids );
+
        if( desc == slap_schema.si_ad_objectClass ) {
-               BDB_IDL_ALL( bdb, ids );
                return 0;
        }
 
-       rc = bdb_index_param( be, desc, LDAP_FILTER_PRESENT,
+       rc = bdb_index_param( op->o_bd, desc, LDAP_FILTER_PRESENT,
                &db, &mask, &prefix );
 
        if( rc != LDAP_SUCCESS ) {
@@ -331,10 +376,10 @@ presence_candidates(
                        "<= bdb_presence_candidates: (%s) no prefix\n",
                        desc->ad_cname.bv_val, 0, 0 );
 #endif
-               return 0;
+               return -1;
        }
 
-       rc = bdb_key_read( be, db, NULL, &prefix, ids );
+       rc = bdb_key_read( op->o_bd, db, NULL, &prefix, ids );
 
        if( rc == DB_NOTFOUND ) {
                BDB_IDL_ZERO( ids );
@@ -372,11 +417,12 @@ done:
 
 static int
 equality_candidates(
-       Backend *be,
+       Operation *op,
        AttributeAssertion *ava,
        ID *ids,
        ID *tmp )
 {
+       struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
        DB      *db;
        int i;
        int rc;
@@ -393,7 +439,9 @@ equality_candidates(
                        ava->aa_desc->ad_cname.bv_val, 0, 0 );
 #endif
 
-       rc = bdb_index_param( be, ava->aa_desc, LDAP_FILTER_EQUALITY,
+       BDB_IDL_ALL( bdb, ids );
+
+       rc = bdb_index_param( op->o_bd, ava->aa_desc, LDAP_FILTER_EQUALITY,
                &db, &mask, &prefix );
 
        if( rc != LDAP_SUCCESS ) {
@@ -408,7 +456,7 @@ equality_candidates(
                        "index_param failed (%d)\n",
                        ava->aa_desc->ad_cname.bv_val, rc, 0 );
 #endif
-               return rc;
+               return 0;
        }
 
        if ( db == NULL ) {
@@ -421,16 +469,16 @@ equality_candidates(
                        "<= bdb_equality_candidates: (%s) not indexed\n", 
                        ava->aa_desc->ad_cname.bv_val, 0, 0 );
 #endif
-               return -1;
+               return 0;
        }
 
        mr = ava->aa_desc->ad_type->sat_equality;
        if( !mr ) {
-               return -1;
+               return 0;
        }
 
        if( !mr->smr_filter ) {
-               return -1;
+               return 0;
        }
 
        rc = (mr->smr_filter)(
@@ -440,7 +488,7 @@ equality_candidates(
                mr,
                &prefix,
                &ava->aa_value,
-               &keys );
+               &keys, op->o_tmpmemctx );
 
        if( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
@@ -454,7 +502,7 @@ equality_candidates(
                        "MR filter failed (%d)\n",
                        prefix.bv_val, ava->aa_desc->ad_cname.bv_val, rc );
 #endif
-               return rc;
+               return 0;
        }
 
        if( keys == NULL ) {
@@ -471,11 +519,12 @@ equality_candidates(
        }
 
        for ( i= 0; keys[i].bv_val != NULL; i++ ) {
-               rc = bdb_key_read( be, db, NULL, &keys[i], tmp );
+               rc = bdb_key_read( op->o_bd, db, NULL, &keys[i], tmp );
 
                if( rc == DB_NOTFOUND ) {
                        BDB_IDL_ZERO( ids );
                        rc = 0;
+                       break;
                } else if( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
                        LDAP_LOG ( INDEX, RESULTS, 
@@ -505,13 +554,17 @@ equality_candidates(
                        break;
                }
 
-               bdb_idl_intersection( ids, tmp );
+               if ( i == 0 ) {
+                       BDB_IDL_CPY( ids, tmp );
+               } else {
+                       bdb_idl_intersection( ids, tmp );
+               }
 
                if( BDB_IDL_IS_ZERO( ids ) )
                        break;
        }
 
-       ber_bvarray_free( keys );
+       ber_bvarray_free_x( keys, op->o_tmpmemctx );
 
 #ifdef NEW_LOGGING
        LDAP_LOG ( INDEX, RESULTS, 
@@ -531,11 +584,12 @@ equality_candidates(
 
 static int
 approx_candidates(
-       Backend *be,
+       Operation *op,
        AttributeAssertion *ava,
        ID *ids,
        ID *tmp )
 {
+       struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
        DB      *db;
        int i;
        int rc;
@@ -552,7 +606,9 @@ approx_candidates(
                        ava->aa_desc->ad_cname.bv_val, 0, 0 );
 #endif
 
-       rc = bdb_index_param( be, ava->aa_desc, LDAP_FILTER_APPROX,
+       BDB_IDL_ALL( bdb, ids );
+
+       rc = bdb_index_param( op->o_bd, ava->aa_desc, LDAP_FILTER_APPROX,
                &db, &mask, &prefix );
 
        if( rc != LDAP_SUCCESS ) {
@@ -567,7 +623,7 @@ approx_candidates(
                        "index_param failed (%d)\n",
                        ava->aa_desc->ad_cname.bv_val, rc, 0 );
 #endif
-               return rc;
+               return 0;
        }
 
        if ( db == NULL ) {
@@ -580,7 +636,7 @@ approx_candidates(
                        "<= bdb_approx_candidates: (%s) not indexed\n",
                        ava->aa_desc->ad_cname.bv_val, 0, 0 );
 #endif
-               return -1;
+               return 0;
        }
 
        mr = ava->aa_desc->ad_type->sat_approx;
@@ -590,11 +646,11 @@ approx_candidates(
        }
 
        if( !mr ) {
-               return -1;
+               return 0;
        }
 
        if( !mr->smr_filter ) {
-               return -1;
+               return 0;
        }
 
        rc = (mr->smr_filter)(
@@ -604,7 +660,7 @@ approx_candidates(
                mr,
                &prefix,
                &ava->aa_value,
-               &keys );
+               &keys, op->o_tmpmemctx );
 
        if( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
@@ -618,7 +674,7 @@ approx_candidates(
                        "MR filter failed (%d)\n",
                        prefix.bv_val, ava->aa_desc->ad_cname.bv_val, rc );
 #endif
-               return rc;
+               return 0;
        }
 
        if( keys == NULL ) {
@@ -635,7 +691,7 @@ approx_candidates(
        }
 
        for ( i= 0; keys[i].bv_val != NULL; i++ ) {
-               rc = bdb_key_read( be, db, NULL, &keys[i], tmp );
+               rc = bdb_key_read( op->o_bd, db, NULL, &keys[i], tmp );
 
                if( rc == DB_NOTFOUND ) {
                        BDB_IDL_ZERO( ids );
@@ -670,13 +726,17 @@ approx_candidates(
                        break;
                }
 
-               bdb_idl_intersection( ids, tmp );
+               if ( i == 0 ) {
+                       BDB_IDL_CPY( ids, tmp );
+               } else {
+                       bdb_idl_intersection( ids, tmp );
+               }
 
                if( BDB_IDL_IS_ZERO( ids ) )
                        break;
        }
 
-       ber_bvarray_free( keys );
+       ber_bvarray_free_x( keys, op->o_tmpmemctx );
 
 #ifdef NEW_LOGGING
        LDAP_LOG ( INDEX, RESULTS, 
@@ -694,11 +754,12 @@ approx_candidates(
 
 static int
 substring_candidates(
-       Backend *be,
+       Operation *op,
        SubstringsAssertion     *sub,
        ID *ids,
        ID *tmp )
 {
+       struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
        DB      *db;
        int i;
        int rc;
@@ -715,7 +776,9 @@ substring_candidates(
                        sub->sa_desc->ad_cname.bv_val, 0, 0 );
 #endif
 
-       rc = bdb_index_param( be, sub->sa_desc, LDAP_FILTER_SUBSTRINGS,
+       BDB_IDL_ALL( bdb, ids );
+
+       rc = bdb_index_param( op->o_bd, sub->sa_desc, LDAP_FILTER_SUBSTRINGS,
                &db, &mask, &prefix );
 
        if( rc != LDAP_SUCCESS ) {
@@ -730,7 +793,7 @@ substring_candidates(
                        "index_param failed (%d)\n",
                        sub->sa_desc->ad_cname.bv_val, rc, 0 );
 #endif
-               return rc;
+               return 0;
        }
 
        if ( db == NULL ) {
@@ -743,17 +806,17 @@ substring_candidates(
                        "<= bdb_substring_candidates: (%s) not indexed\n",
                        sub->sa_desc->ad_cname.bv_val, 0, 0 );
 #endif
-               return -1;
+               return 0;
        }
 
        mr = sub->sa_desc->ad_type->sat_substr;
 
        if( !mr ) {
-               return -1;
+               return 0;
        }
 
        if( !mr->smr_filter ) {
-               return -1;
+               return 0;
        }
 
        rc = (mr->smr_filter)(
@@ -763,7 +826,7 @@ substring_candidates(
                mr,
                &prefix,
                sub,
-               &keys );
+               &keys, op->o_tmpmemctx );
 
        if( rc != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
@@ -777,7 +840,7 @@ substring_candidates(
                        "MR filter failed (%d)\n",
                        sub->sa_desc->ad_cname.bv_val, rc, 0 );
 #endif
-               return rc;
+               return 0;
        }
 
        if( keys == NULL ) {
@@ -794,7 +857,7 @@ substring_candidates(
        }
 
        for ( i= 0; keys[i].bv_val != NULL; i++ ) {
-               rc = bdb_key_read( be, db, NULL, &keys[i], tmp );
+               rc = bdb_key_read( op->o_bd, db, NULL, &keys[i], tmp );
 
                if( rc == DB_NOTFOUND ) {
                        BDB_IDL_ZERO( ids );
@@ -829,13 +892,17 @@ substring_candidates(
                        break;
                }
 
-               bdb_idl_intersection( ids, tmp );
+               if ( i == 0 ) {
+                       BDB_IDL_CPY( ids, tmp );
+               } else {
+                       bdb_idl_intersection( ids, tmp );
+               }
 
                if( BDB_IDL_IS_ZERO( ids ) )
                        break;
        }
 
-       ber_bvarray_free( keys );
+       ber_bvarray_free_x( keys, op->o_tmpmemctx );
 
 #ifdef NEW_LOGGING
        LDAP_LOG ( INDEX, RESULTS, 
@@ -848,6 +915,6 @@ substring_candidates(
                (long) BDB_IDL_FIRST(ids),
                (long) BDB_IDL_LAST(ids) );
 #endif
-       return( 0 );
+       return( rc );
 }