Removed some FIXMEs. Mostly comments on things that had already been fixed.
[idzebra-moved-to-github.git] / index / zebraapi.c
index b54afe1..3d9d89f 100644 (file)
-/*
- * Copyright (C) 1995-2000, Index Data
- * All rights reserved.
- *
- * $Log: zebraapi.c,v $
- * Revision 1.38  2000-11-08 13:46:58  adam
- * Fixed scan: server could break if bad attribute/database was selected.
- * Work on remote update.
- *
- * Revision 1.37  2000/10/17 12:37:09  adam
- * Fixed notification of live-updates. Fixed minor problem with mf_init
- * where it didn't handle shadow area file names correctly.
- *
- * Revision 1.36  2000/09/06 08:59:36  adam
- * Using read-only (for now) for server.
- *
- * Revision 1.35  2000/07/07 12:49:20  adam
- * Optimized resultSetInsert{Rank,Sort}.
- *
- * Revision 1.34  2000/06/09 13:56:38  ian
- * Added some logging on Authentication and searches.
- *
- * Revision 1.33  2000/05/18 12:01:36  adam
- * System call times(2) used again. More 64-bit fixes.
- *
- * Revision 1.32  2000/04/19 14:35:59  adam
- * WIN32 update (this version is known not to work on Windows).
- *
- * Revision 1.31  2000/04/05 10:07:02  adam
- * Minor zebra compile fix.
- *
- * Revision 1.30  2000/04/05 09:49:35  adam
- * On Unix, zebra/z'mbol uses automake.
- *
- * Revision 1.29  2000/03/20 19:08:36  adam
- * Added remote record import using Z39.50 extended services and Segment
- * Requests.
- *
- * Revision 1.28  2000/03/15 15:00:30  adam
- * First work on threaded version.
- *
- * Revision 1.27  2000/02/24 12:31:17  adam
- * Added zebra_string_norm.
- *
- * Revision 1.26  1999/11/30 13:48:03  adam
- * Improved installation. Updated for inclusion of YAZ header files.
- *
- * Revision 1.25  1999/11/04 15:00:45  adam
- * Implemented delete result set(s).
- *
- * Revision 1.24  1999/10/14 14:33:50  adam
- * Added truncation 5=106.
- *
- * Revision 1.23  1999/09/07 11:36:32  adam
- * Minor changes.
- *
- * Revision 1.22  1999/08/02 10:13:47  adam
- * Fixed bug regarding zebra_hits.
- *
- * Revision 1.21  1999/07/14 10:59:26  adam
- * Changed functions isc_getmethod, isams_getmethod.
- * Improved fatal error handling (such as missing EXPLAIN schema).
- *
- * Revision 1.20  1999/07/06 12:28:04  adam
- * Updated record index structure. Format includes version ID. Compression
- * algorithm ID is stored for each record block.
- *
- * Revision 1.19  1999/05/26 07:49:13  adam
- * C++ compilation.
- *
- * Revision 1.18  1999/05/15 14:36:38  adam
- * Updated dictionary. Implemented "compression" of dictionary.
- *
- * Revision 1.17  1999/05/12 13:08:06  adam
- * First version of ISAMS.
- *
- * Revision 1.16  1999/02/19 10:38:30  adam
- * Implemented chdir-setting.
- *
- * Revision 1.15  1999/02/17 12:18:12  adam
- * Fixed zebra_close so that a NULL pointer is ignored.
- *
- * Revision 1.14  1999/02/02 14:51:11  adam
- * Updated WIN32 code specific sections. Changed header.
- *
- * Revision 1.13  1998/12/16 12:23:30  adam
- * Added facility for database name mapping using resource mapdb.
- *
- * Revision 1.12  1998/11/16 10:18:10  adam
- * Better error reporting for result sets.
- *
- * Revision 1.11  1998/10/16 08:14:34  adam
- * Updated record control system.
- *
- * Revision 1.10  1998/09/22 10:03:42  adam
- * Changed result sets to be persistent in the sense that they can
- * be re-searched if needed.
- * Fixed memory leak in rsm_or.
- *
- * Revision 1.9  1998/09/02 13:53:17  adam
- * Extra parameter decode added to search routines to implement
- * persistent queries.
- *
- * Revision 1.8  1998/08/24 17:29:23  adam
- * Minor changes.
- *
- * Revision 1.7  1998/06/24 12:16:13  adam
- * Support for relations on text operands. Open range support in
- * DFA module (i.e. [-j], [g-]).
- *
- * Revision 1.6  1998/06/22 11:36:47  adam
- * Added authentication check facility to zebra.
- *
- * Revision 1.5  1998/06/13 00:14:08  adam
- * Minor changes.
- *
- * Revision 1.4  1998/06/12 12:22:12  adam
- * Work on Zebra API.
- *
- * Revision 1.3  1998/05/27 16:57:44  adam
- * Zebra returns surrogate diagnostic for single records when
- * appropriate.
- *
- * Revision 1.2  1998/05/20 10:12:19  adam
- * Implemented automatic EXPLAIN database maintenance.
- * Modified Zebra to work with ASN.1 compiled version of YAZ.
- *
- * Revision 1.1  1998/03/05 08:45:13  adam
- * New result set model and modular ranking system. Moved towards
- * descent server API. System information stored as "SGML" records.
- *
- */
+/* $Id: zebraapi.c,v 1.128 2004-09-03 14:59:49 heikki Exp $
+   Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004
+   Index Data Aps
+
+This file is part of the Zebra server.
+
+Zebra is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with Zebra; see the file LICENSE.zebra.  If not, write to the
+Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.
+*/
 
 #include <assert.h>
 #include <stdio.h>
+#include <limits.h>
 #ifdef WIN32
 #include <io.h>
 #include <process.h>
 #endif
 
 #include <yaz/diagbib1.h>
-#include "zserver.h"
+#include <yaz/pquery.h>
+#include <yaz/sortspec.h>
+#include "index.h"
 #include <charmap.h>
+#include <idzebra/api.h>
+
+/* simple asserts to validate the most essential input args */
+#define ASSERTZH assert(zh && zh->service)
+#define ASSERTZHRES assert(zh && zh->service && zh->res)
+#define ASSERTZS assert(zs)
+
+/* A simple log macro */
+/* don't break with older yazen that lack log_app2 */
+#ifdef LOG_APP2
+#define LOG_API LOG_APP2
+#else
+#define LOG_API LOG_DEBUG
+#endif
 
-static void zebra_chdir (ZebraService zh)
+static Res zebra_open_res (ZebraHandle zh);
+static void zebra_close_res (ZebraHandle zh);
+
+
+static void zebra_chdir (ZebraService zs)
 {
-    const char *dir = res_get (zh->res, "chdir");
+    const char *dir ;
+    ASSERTZS;
+    yaz_log(LOG_API,"zebra_chdir");
+    dir = res_get (zs->global_res, "chdir");
     if (!dir)
        return;
     logf (LOG_DEBUG, "chdir %s", dir);
@@ -158,106 +71,73 @@ static void zebra_chdir (ZebraService zh)
 #endif
 }
 
-static int extract_rec_in_mem (ZebraHandle zh, const char *recordType,
-                              const char *buf, size_t buf_size,
-                              const char *databaseName, int delete_flag,
-                              int test_mode, int *sysno,
-                              int store_keys, int store_data,
-                              const char *match_criteria);
-
-static int explain_extract (void *handle, Record rec, data1_node *n);
-static void extract_index (ZebraHandle zh);
-
-static void zebra_register_unlock (ZebraHandle zh);
-
-static int zebra_register_activate (ZebraService zh, int rw);
-static int zebra_register_deactivate (ZebraService zh);
-
-static int zebra_register_lock (ZebraHandle zh, int rw)
+static void zebra_flush_reg (ZebraHandle zh)
 {
-    time_t lastChange;
-    int state;
-    zh->errCode = 0;
-    zh->errString = 0;
-    if (!zh->service->active)
-    {
-       zh->errCode = 1019;
-       return 1;
-    }
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_flush_reg");
+    zh->errCode=0;
+    zebraExplain_flush (zh->reg->zei, zh);
     
-#if HAVE_SYS_TIMES_H
-    times (&zh->tms1);
-#endif
-
-    state = zebra_server_lock_get_state(zh->service, &lastChange);
-
-    zebra_server_lock (zh->service, state);
-
-    switch (state)
-    {
-    case 'c':
-        state = 1;
-        break;
-    default:
-        state = 0;
-    }
-    if (rw)
-       logf (LOG_LOG, "Register in read/write mode");
-    else if (zh->service->registerState == state)
-    {
-       if (zh->service->registerChange >= lastChange)
-           return 0;
-       logf (LOG_LOG, "Register completely updated since last access");
-    }
-    else if (zh->service->registerState == -1)
-       logf (LOG_LOG, "Reading register using state %d pid=%ld", state,
-             (long) getpid());
-    else
-       logf (LOG_LOG, "Register has changed state from %d to %d",
-              zh->service->registerState, state);
-    zh->service->registerChange = lastChange;
-
-    zebra_register_deactivate (zh->service);
-
-    zh->service->registerState = state;
-
-    zebra_register_activate (zh->service, rw);
-    return 0;
+    extract_flushWriteKeys (zh,1 /* final */);
+    zebra_index_merge (zh );
 }
 
-
-static void zebra_register_unlock (ZebraHandle zh)
-{
-    if (zh->service->registerState != -1)
-        zebra_server_unlock (zh->service, zh->service->registerState);
-#if HAVE_SYS_TIMES_H
-    times (&zh->tms2);
-    logf (LOG_LOG, "user/system: %ld/%ld",
-                    (long) (zh->tms2.tms_utime - zh->tms1.tms_utime),
-                    (long) (zh->tms2.tms_stime - zh->tms1.tms_stime));
-
-#endif
-}
+static struct zebra_register *zebra_register_open (ZebraService zs, 
+                                                   const char *name,
+                                                   int rw, int useshadow,
+                                                   Res res,
+                                                   const char *reg_path);
+static void zebra_register_close (ZebraService zs, struct zebra_register *reg);
 
 ZebraHandle zebra_open (ZebraService zs)
 {
     ZebraHandle zh;
+    const char *default_encoding;
+    ASSERTZS;
+    yaz_log(LOG_API,"zebra_open");
 
-    assert (zs);
-    if (zs->stop_flag)
-       return 0;
+    if (!zs)
+        return 0;
 
     zh = (ZebraHandle) xmalloc (sizeof(*zh));
+    yaz_log (LOG_DEBUG, "zebra_open zs=%p returns %p", zs, zh);
 
     zh->service = zs;
+    zh->reg = 0;          /* no register attached yet */
     zh->sets = 0;
     zh->destroyed = 0;
     zh->errCode = 0;
     zh->errString = 0;
+    zh->res = 0; 
+    zh->user_perm = 0;
+
+    zh->reg_name = xstrdup ("");
+    zh->path_reg = 0;
+    zh->num_basenames = 0;
+    zh->basenames = 0;
+
+    zh->trans_no = 0;
+    zh->trans_w_no = 0;
+
+    zh->lock_normal = 0;
+    zh->lock_shadow = 0;
+
+    zh->shadow_enable = 1;
+
+    default_encoding = res_get_def(zs->global_res, "encoding", "ISO-8859-1");
+    zh->record_encoding = xstrdup (default_encoding);
+
+    zh->iconv_to_utf8 =
+        yaz_iconv_open ("UTF-8", default_encoding);
+    if (zh->iconv_to_utf8 == 0)
+        yaz_log (LOG_WARN, "iconv: %s to UTF-8 unsupported",
+           default_encoding);
+    zh->iconv_from_utf8 =
+        yaz_iconv_open (default_encoding, "UTF-8");
+    if (zh->iconv_to_utf8 == 0)
+        yaz_log (LOG_WARN, "iconv: UTF-8 to %s unsupported",
+           default_encoding);
 
-    zh->key_buf = 0;
-    zh->admin_databaseName = 0;
-    
     zebra_mutex_cond_lock (&zs->session_lock);
 
     zh->next = zs->sessions;
@@ -268,239 +148,342 @@ ZebraHandle zebra_open (ZebraService zs)
     return zh;
 }
 
-
 ZebraService zebra_start (const char *configName)
 {
-    ZebraService zh = xmalloc (sizeof(*zh));
-
-    yaz_log (LOG_LOG, "zebra_start %s", configName);
+    return zebra_start_res(configName, 0, 0);
+}
 
-    zh->configName = xstrdup(configName);
-    zh->sessions = 0;
-    zh->stop_flag = 0;
-    zh->active = 1;
+ZebraService zebra_start_res (const char *configName, Res def_res, Res over_res)
+{
+    Res res;
 
-    zh->registerState = -1;
-    zh->registerChange = 0;
+    yaz_log(LOG_API|LOG_LOG,"zebra_start %s",configName);
 
-    if (!(zh->res = res_open (zh->configName)))
+    if ((res = res_open (configName, def_res, over_res)))
     {
-       logf (LOG_WARN, "Failed to read resources `%s'", zh->configName);
-       return zh;
+        ZebraService zh = xmalloc (sizeof(*zh));
+
+       yaz_log (LOG_DEBUG, "Read resources `%s'", configName);
+        
+        zh->global_res = res;
+        zh->configName = xstrdup(configName);
+        zh->sessions = 0;
+        
+        zebra_chdir (zh);
+        
+        zebra_mutex_cond_init (&zh->session_lock);
+        if (!res_get (zh->global_res, "passwd"))
+            zh->passwd_db = NULL;
+        else
+        {
+            zh->passwd_db = passwd_db_open ();
+            if (!zh->passwd_db)
+                logf (LOG_WARN|LOG_ERRNO, "passwd_db_open failed");
+            else
+                passwd_db_file (zh->passwd_db,
+                                res_get (zh->global_res, "passwd"));
+        }
+        zh->path_root = res_get (zh->global_res, "root");
+        return zh;
     }
-    zebra_chdir (zh);
-    zebra_server_lock_init (zh);
-    zebra_mutex_cond_init (&zh->session_lock);
-    return zh;
+    return 0;
 }
 
-static int zebra_register_activate (ZebraService zh, int rw)
+
+void zebra_pidfname(ZebraService zs, char *path)
 {
-    if (zh->active > 1)
-       return 0;
-    yaz_log (LOG_LOG, "zebra_register_activate shadow=%s",
-            zh->registerState ? "yes" : "no");
+    zebra_lock_prefix (zs->global_res, path);
+    strcat(path, "zebrasrv.pid");
+}
 
-    zh->dh = data1_create ();
-    if (!zh->dh)
-        return -1;
-    zh->bfs = bfs_create (res_get (zh->res, "register"));
-    if (!zh->bfs)
+static
+struct zebra_register *zebra_register_open (ZebraService zs, const char *name,
+                                            int rw, int useshadow, Res res,
+                                            const char *reg_path)
+{
+    struct zebra_register *reg;
+    int record_compression = REC_COMPRESS_NONE;
+    const char *recordCompression = 0;
+    const char *profilePath;
+    char cwd[1024];
+
+    ASSERTZS;
+    
+    reg = xmalloc (sizeof(*reg));
+
+    assert (name);
+    reg->name = xstrdup (name);
+
+    reg->seqno = 0;
+    reg->last_val = 0;
+
+    assert (res);
+
+    yaz_log (LOG_LOG|LOG_API, "zebra_register_open rw = %d useshadow=%d p=%p,n=%s,rp=%s",
+             rw, useshadow, reg, name, reg_path ? reg_path : "(none)");
+    
+    reg->dh = data1_createx (DATA1_FLAG_XML);
+    if (!reg->dh)
+        return 0;
+    reg->bfs = bfs_create (res_get (res, "register"), reg_path);
+    if (!reg->bfs)
     {
-        data1_destroy(zh->dh);
-        return -1;
+        data1_destroy(reg->dh);
+        return 0;
     }
-    bf_lockDir (zh->bfs, res_get (zh->res, "lockDir"));
-    bf_cache (zh->bfs, zh->registerState ? res_get (zh->res, "shadow") : NULL);
-    data1_set_tabpath (zh->dh, res_get(zh->res, "profilePath"));
-    zh->recTypes = recTypes_init (zh->dh);
-    recTypes_default_handlers (zh->recTypes);
-
-    zh->records = NULL;
-    zh->zebra_maps = zebra_maps_open (zh->res);
-    zh->rank_classes = NULL;
-
-    zh->records = 0;
-    zh->dict = 0;
-    zh->sortIdx = 0;
-    zh->isams = 0;
-#if ZMBOL
-    zh->isam = 0;
-    zh->isamc = 0;
-    zh->isamd = 0;
+    if (useshadow)
+        bf_cache (reg->bfs, res_get (res, "shadow"));
+
+    getcwd(cwd, sizeof(cwd)-1);
+    profilePath = res_get_def(res, "profilePath", DEFAULT_PROFILE_PATH);
+    yaz_log(LOG_LOG, "profilePath=%s cwd=%s", profilePath, cwd);
+
+    data1_set_tabpath (reg->dh, profilePath);
+    data1_set_tabroot (reg->dh, reg_path);
+    reg->recTypes = recTypes_init (reg->dh);
+    recTypes_default_handlers (reg->recTypes);
+
+    reg->zebra_maps = zebra_maps_open (res, reg_path);
+    reg->rank_classes = NULL;
+
+    reg->key_buf = 0;
+
+    reg->keys.buf_max = 0;
+    reg->keys.buf = 0;
+#if IT_KEY_NEW
+    reg->keys.codec_handle = iscz1_start();
 #endif
-    zh->zei = 0;
+
+    reg->sortKeys.buf = 0;
+    reg->sortKeys.buf_max = 0;
+
+    reg->records = 0;
+    reg->dict = 0;
+    reg->sortIdx = 0;
+    reg->isams = 0;
+    reg->matchDict = 0;
+    reg->isamc = 0;
+    reg->isamb = 0;
+    reg->zei = 0;
+    reg->matchDict = 0;
+    reg->key_file_no = 0;
+    reg->ptr_i=0;
     
-    zebraRankInstall (zh, rank1_class);
+    zebraRankInstall (reg, rank1_class);
+    zebraRankInstall (reg, rankzv_class);
+    zebraRankInstall (reg, rankliv_class);
 
-    if (!res_get (zh->res, "passwd"))
-       zh->passwd_db = NULL;
-    else
-    {
-       zh->passwd_db = passwd_db_open ();
-       if (!zh->passwd_db)
-           logf (LOG_WARN|LOG_ERRNO, "passwd_db_open failed");
-       else
-           passwd_db_file (zh->passwd_db, res_get (zh->res, "passwd"));
-    }
+    recordCompression = res_get_def (res, "recordCompression", "none");
+    if (!strcmp (recordCompression, "none"))
+       record_compression = REC_COMPRESS_NONE;
+    if (!strcmp (recordCompression, "bzip2"))
+       record_compression = REC_COMPRESS_BZIP2;
 
-    if (!(zh->records = rec_open (zh->bfs, rw, 0)))
+    if (!(reg->records = rec_open (reg->bfs, rw, record_compression)))
     {
        logf (LOG_WARN, "rec_open");
-       return -1;
+       return 0;
     }
-    if (!(zh->dict = dict_open (zh->bfs, FNAME_DICT, 80, rw, 0)))
+    if (rw)
+    {
+        reg->matchDict = dict_open (reg->bfs, GMATCH_DICT, 20, 1, 0);
+    }
+    if (!(reg->dict = dict_open (reg->bfs, FNAME_DICT, 40, rw, 0)))
     {
        logf (LOG_WARN, "dict_open");
-       return -1;
+       return 0;
     }
-    if (!(zh->sortIdx = sortIdx_open (zh->bfs, rw)))
+    if (!(reg->sortIdx = sortIdx_open (reg->bfs, rw)))
     {
        logf (LOG_WARN, "sortIdx_open");
-       return -1;
+       return 0;
     }
-    if (res_get_match (zh->res, "isam", "s", ISAM_DEFAULT))
+    if (res_get_match (res, "isam", "s", ISAM_DEFAULT))
     {
        struct ISAMS_M_s isams_m;
-       if (!(zh->isams = isams_open (zh->bfs, FNAME_ISAMS, rw,
-                                     key_isams_m(zh->res, &isams_m))))
+       if (!(reg->isams = isams_open (reg->bfs, FNAME_ISAMS, rw,
+                                     key_isams_m(res, &isams_m))))
        {
            logf (LOG_WARN, "isams_open");
-           return -1;
+           return 0;
        }
     }
-#if ZMBOL
-    else if (res_get_match (zh->res, "isam", "i", ISAM_DEFAULT))
+    if (res_get_match (res, "isam", "c", ISAM_DEFAULT))
     {
-       if (!(zh->isam = is_open (zh->bfs, FNAME_ISAM, key_compare, rw,
-                                 sizeof (struct it_key), zh->res)))
+       struct ISAMC_M_s isamc_m;
+       if (!(reg->isamc = isc_open (reg->bfs, FNAME_ISAMC,
+                                   rw, key_isamc_m(res, &isamc_m))))
        {
-           logf (LOG_WARN, "is_open");
-           return -1;
+           logf (LOG_WARN, "isc_open");
+           return 0;
        }
     }
-    else if (res_get_match (zh->res, "isam", "c", ISAM_DEFAULT))
+    if (res_get_match (res, "isam", "b", ISAM_DEFAULT))
     {
        struct ISAMC_M_s isamc_m;
-       if (!(zh->isamc = isc_open (zh->bfs, FNAME_ISAMC,
-                                   rw, key_isamc_m(zh->res, &isamc_m))))
+       
+       if (!(reg->isamb = isamb_open (reg->bfs, "isamb",
+                                       rw, key_isamc_m(res, &isamc_m), 0)))
        {
-           logf (LOG_WARN, "isc_open");
-           return -1;
+           logf (LOG_WARN, "isamb_open");
+           return 0;
        }
     }
-    else if (res_get_match (zh->res, "isam", "d", ISAM_DEFAULT))
+    if (res_get_match (res, "isam", "bc", ISAM_DEFAULT))
     {
-       struct ISAMD_M_s isamd_m;
+       struct ISAMC_M_s isamc_m;
        
-       if (!(zh->isamd = isamd_open (zh->bfs, FNAME_ISAMD,
-                                     rw, key_isamd_m(zh->res, &isamd_m))))
+       if (!(reg->isamb = isamb_open (reg->bfs, "isamb",
+                                       rw, key_isamc_m(res, &isamc_m), 1)))
        {
-           logf (LOG_WARN, "isamd_open");
-           return -1;
+           logf (LOG_WARN, "isamb_open");
+           return 0;
        }
     }
-#endif
-    zh->zei = zebraExplain_open (zh->records, zh->dh,
-                                zh->res, rw, 0 /* rGroup */,
-                                explain_extract);
-    if (!zh->zei)
+    if (res_get_match (res, "isam", "null", ISAM_DEFAULT))
+    {
+       struct ISAMC_M_s isamc_m;
+       
+       if (!(reg->isamb = isamb_open (reg->bfs, "isamb",
+                                       rw, key_isamc_m(res, &isamc_m), -1)))
+       {
+           logf (LOG_WARN, "isamb_open");
+           return 0;
+       }
+    }
+    reg->zei = zebraExplain_open (reg->records, reg->dh,
+                                  res, rw, reg,
+                                  explain_extract);
+    if (!reg->zei)
     {
        logf (LOG_WARN, "Cannot obtain EXPLAIN information");
-       return -1;
+       return 0;
     }
-    zh->active = 2;
-    yaz_log (LOG_LOG, "zebra_register_activate ok");
-    return 0;
+    reg->active = 2;
+    yaz_log (LOG_DEBUG, "zebra_register_open ok p=%p", reg);
+    return reg;
 }
 
-void zebra_admin_shutdown (ZebraHandle zh)
+int zebra_admin_shutdown (ZebraHandle zh)
 {
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_admin_shutdown");
+    zh->errCode=0;
+
     zebra_mutex_cond_lock (&zh->service->session_lock);
     zh->service->stop_flag = 1;
-    if (!zh->service->sessions)
-       zebra_register_deactivate(zh->service);
-    zh->service->active = 0;
     zebra_mutex_cond_unlock (&zh->service->session_lock);
+    return 0;
 }
 
-void zebra_admin_start (ZebraHandle zh)
+int zebra_admin_start (ZebraHandle zh)
 {
-    ZebraService zs = zh->service;
-    zh->errCode = 0;
+    ZebraService zs;
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_admin_start");
+    zh->errCode=0;
+    zs = zh->service;
     zebra_mutex_cond_lock (&zs->session_lock);
-    if (!zs->stop_flag)
-       zh->service->active = 1;
     zebra_mutex_cond_unlock (&zs->session_lock);
+    return 0;
 }
 
-static int zebra_register_deactivate (ZebraService zh)
+static void zebra_register_close (ZebraService zs, struct zebra_register *reg)
 {
-    zh->stop_flag = 0;
-    if (zh->active <= 1)
-       return 0;
-    yaz_log(LOG_LOG, "zebra_register_deactivate");
-    zebra_chdir (zh);
-    if (zh->records)
+    ASSERTZS;
+    yaz_log(LOG_LOG|LOG_API, "zebra_register_close p=%p", reg);
+    reg->stop_flag = 0;
+    zebra_chdir (zs);
+    if (reg->records)
     {
-        zebraExplain_close (zh->zei, 0);
-        dict_close (zh->dict);
-       sortIdx_close (zh->sortIdx);
-       if (zh->isams)
-           isams_close (zh->isams);
-#if ZMBOL
-        if (zh->isam)
-            is_close (zh->isam);
-        if (zh->isamc)
-            isc_close (zh->isamc);
-        if (zh->isamd)
-            isamd_close (zh->isamd);
-#endif
-        rec_close (&zh->records);
+        zebraExplain_close (reg->zei);
+        dict_close (reg->dict);
+        if (reg->matchDict)
+            dict_close (reg->matchDict);
+       sortIdx_close (reg->sortIdx);
+       if (reg->isams)
+           isams_close (reg->isams);
+        if (reg->isamc)
+            isc_close (reg->isamc);
+        if (reg->isamb)
+            isamb_close (reg->isamb);
+        rec_close (&reg->records);
     }
-    recTypes_destroy (zh->recTypes);
-    zebra_maps_close (zh->zebra_maps);
-    zebraRankDestroy (zh);
-    bfs_destroy (zh->bfs);
-    data1_destroy (zh->dh);
-
-    if (zh->passwd_db)
-       passwd_db_close (zh->passwd_db);
-    zh->active = 1;
-    return 0;
+
+    recTypes_destroy (reg->recTypes);
+    zebra_maps_close (reg->zebra_maps);
+    zebraRankDestroy (reg);
+    bfs_destroy (reg->bfs);
+    data1_destroy (reg->dh);
+
+    xfree (reg->sortKeys.buf);
+    xfree (reg->keys.buf);
+#if IT_KEY_NEW
+    if (reg->keys.codec_handle)
+       iscz1_stop(reg->keys.codec_handle);
+#endif
+
+    xfree (reg->key_buf);
+    xfree (reg->name);
+    xfree (reg);
 }
 
-void zebra_stop(ZebraService zh)
+int zebra_stop(ZebraService zs)
 {
-    if (!zh)
-       return ;
-    yaz_log (LOG_LOG, "zebra_stop");
+    if (!zs)
+        return 0;
+    yaz_log (LOG_LOG|LOG_API, "zebra_stop");
 
-    assert (!zh->sessions);
+    while (zs->sessions)
+    {
+        zebra_close (zs->sessions);
+    }
+        
+    zebra_mutex_cond_destroy (&zs->session_lock);
 
-    zebra_mutex_cond_destroy (&zh->session_lock);
+    if (zs->passwd_db)
+       passwd_db_close (zs->passwd_db);
 
-    zebra_register_deactivate(zh);
-    res_close (zh->res);
-    xfree (zh->configName);
-    xfree (zh);
+    res_close (zs->global_res);
+    xfree (zs->configName);
+    xfree (zs);
+    return 0;
 }
 
-void zebra_close (ZebraHandle zh)
+int zebra_close (ZebraHandle zh)
 {
-    ZebraService zs = zh->service;
+    ZebraService zs;
     struct zebra_session **sp;
+    int i;
+
+    yaz_log(LOG_API,"zebra_close");
     if (!zh)
-       return ;
+        return 0;
+    ASSERTZH;
+    zh->errCode=0;
+    
+    zs = zh->service;
+    yaz_log (LOG_DEBUG, "zebra_close zh=%p", zh);
     resultSetDestroy (zh, -1, 0, 0);
 
-    if (zh->key_buf)
-    {
-       xfree (zh->key_buf);
-       zh->key_buf = 0;
-    }
-    xfree (zh->admin_databaseName);
+    if (zh->reg)
+        zebra_register_close (zh->service, zh->reg);
+    zebra_close_res (zh);
+
+    xfree (zh->record_encoding);
+
+    for (i = 0; i < zh->num_basenames; i++)
+        xfree (zh->basenames[i]);
+    xfree (zh->basenames);
+
+    if (zh->iconv_to_utf8 != 0)
+        yaz_iconv_close (zh->iconv_to_utf8);
+    if (zh->iconv_from_utf8 != 0)
+        yaz_iconv_close (zh->iconv_from_utf8);
+
     zebra_mutex_cond_lock (&zs->session_lock);
+    zebra_lock_destroy (zh->lock_normal);
+    zebra_lock_destroy (zh->lock_shadow);
     sp = &zs->sessions;
     while (1)
     {
@@ -512,10 +495,13 @@ void zebra_close (ZebraHandle zh)
        }
        sp = &(*sp)->next;
     }
-    if (!zs->sessions && zs->stop_flag)
-       zebra_register_deactivate(zs);
     zebra_mutex_cond_unlock (&zs->session_lock);
+    xfree (zh->reg_name);
+    xfree (zh->user_perm);
+    zh->service=0; /* more likely to trigger an assert */
+    xfree (zh->path_reg);
     xfree (zh);
+    return 0;
 }
 
 struct map_baseinfo {
@@ -527,7 +513,108 @@ struct map_baseinfo {
     char **new_basenames;
     int new_num_max;
 };
-       
+
+static Res zebra_open_res (ZebraHandle zh)
+{
+    Res res = 0;
+    char fname[512];
+    ASSERTZH;
+    zh->errCode=0;
+
+    if (zh->path_reg)
+    {
+        sprintf (fname, "%.200s/zebra.cfg", zh->path_reg);
+        res = res_open (fname, zh->service->global_res, 0);
+        if (!res)
+            res = zh->service->global_res;
+    }
+    else if (*zh->reg_name == 0)
+    {
+        res = zh->service->global_res;
+    }
+    else
+    {
+        yaz_log (LOG_WARN, "no register root specified");
+        return 0;  /* no path for register - fail! */
+    }
+    return res;
+}
+
+static void zebra_close_res (ZebraHandle zh)
+{
+    ASSERTZH;
+    zh->errCode=0;
+    if (zh->res != zh->service->global_res)
+        res_close (zh->res);
+    zh->res = 0;
+}
+
+static int zebra_select_register (ZebraHandle zh, const char *new_reg)
+{
+    ASSERTZH;
+    zh->errCode=0;
+    if (zh->res && strcmp (zh->reg_name, new_reg) == 0)
+        return 0;
+    if (!zh->res)
+    {
+        assert (zh->reg == 0);
+        assert (*zh->reg_name == 0);
+    }
+    else
+    {
+        if (zh->reg)
+        {
+            resultSetInvalidate (zh);
+            zebra_register_close (zh->service, zh->reg);
+            zh->reg = 0;
+        }
+        zebra_close_res(zh);
+    }
+    xfree (zh->reg_name);
+    zh->reg_name = xstrdup (new_reg);
+
+    xfree (zh->path_reg);
+    zh->path_reg = 0;
+    if (zh->service->path_root)
+    {
+        zh->path_reg = xmalloc (strlen(zh->service->path_root) + 
+                                strlen(zh->reg_name) + 3);
+        strcpy (zh->path_reg, zh->service->path_root);
+        if (*zh->reg_name)
+        {
+            strcat (zh->path_reg, "/");
+            strcat (zh->path_reg, zh->reg_name);
+        }
+    }
+    zh->res = zebra_open_res (zh);
+    
+    if (zh->lock_normal)
+        zebra_lock_destroy (zh->lock_normal);
+    zh->lock_normal = 0;
+
+    if (zh->lock_shadow)
+        zebra_lock_destroy (zh->lock_shadow);
+    zh->lock_shadow = 0;
+
+    if (zh->res)
+    {
+        char fname[512];
+        const char *lock_area  =res_get (zh->res, "lockDir");
+        
+        if (!lock_area && zh->path_reg)
+            res_set (zh->res, "lockDir", zh->path_reg);
+        sprintf (fname, "norm.%s.LCK", zh->reg_name);
+        zh->lock_normal =
+            zebra_lock_create (res_get(zh->res, "lockDir"), fname, 0);
+        
+        sprintf (fname, "shadow.%s.LCK", zh->reg_name);
+        zh->lock_shadow =
+            zebra_lock_create (res_get(zh->res, "lockDir"), fname, 0);
+
+    }
+    return 1;
+}
+
 void map_basenames_func (void *vp, const char *name, const char *value)
 {
     struct map_baseinfo *p = (struct map_baseinfo *) vp;
@@ -542,7 +629,7 @@ void map_basenames_func (void *vp, const char *name, const char *value)
        return ;
     no--;
     for (i = 0; i<p->num_bases; i++)
-       if (p->basenames[i] && !strcmp (p->basenames[i], fromdb))
+       if (p->basenames[i] && !STRCASECMP (p->basenames[i], fromdb))
        {
            p->basenames[i] = 0;
            for (i = 0; i < no; i++)
@@ -562,6 +649,9 @@ void map_basenames (ZebraHandle zh, ODR stream,
     struct map_baseinfo info;
     struct map_baseinfo *p = &info;
     int i;
+    ASSERTZH;
+    yaz_log(LOG_API,"map_basenames ");
+    zh->errCode=0;
 
     info.zh = zh;
     info.num_bases = *num_bases;
@@ -572,7 +662,7 @@ void map_basenames (ZebraHandle zh, ODR stream,
        odr_malloc (stream, sizeof(*info.new_basenames) * info.new_num_max);
     info.mem = stream->mem;
 
-    res_trav (zh->service->res, "mapdb", &info, map_basenames_func);
+    res_trav (zh->service->global_res, "mapdb", &info, map_basenames_func);
     
     for (i = 0; i<p->num_bases; i++)
        if (p->basenames[i] && p->new_num_bases < p->new_num_max)
@@ -586,31 +676,154 @@ void map_basenames (ZebraHandle zh, ODR stream,
        logf (LOG_LOG, "base %s", (*basenames)[i]);
 }
 
-void zebra_search_rpn (ZebraHandle zh, ODR stream, ODR decode,
-                      Z_RPNQuery *query, int num_bases, char **basenames, 
-                      const char *setname)
+int zebra_select_database (ZebraHandle zh, const char *basename)
+{
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_select_database %s",basename);
+    zh->errCode=0;
+    return zebra_select_databases (zh, 1, &basename);
+}
+
+int zebra_select_databases (ZebraHandle zh, int num_bases,
+                            const char **basenames)
+{
+    int i;
+    const char *cp;
+    int len = 0;
+    char *new_reg = 0;
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_select_databases n=%d [0]=%s",
+                   num_bases,basenames[0]);
+    zh->errCode=0;
+    
+    if (num_bases < 1)
+    {
+        zh->errCode = 23;
+        return -1;
+    }
+    for (i = 0; i < zh->num_basenames; i++)
+        xfree (zh->basenames[i]);
+    xfree (zh->basenames);
+    
+    zh->num_basenames = num_bases;
+    zh->basenames = xmalloc (zh->num_basenames * sizeof(*zh->basenames));
+    for (i = 0; i < zh->num_basenames; i++)
+        zh->basenames[i] = xstrdup (basenames[i]);
+
+    cp = strrchr(basenames[0], '/');
+    if (cp)
+    {
+        len = cp - basenames[0];
+        new_reg = xmalloc (len + 1);
+        memcpy (new_reg, basenames[0], len);
+        new_reg[len] = '\0';
+    }
+    else
+        new_reg = xstrdup ("");
+    for (i = 1; i<num_bases; i++)
+    {
+        const char *cp1;
+
+        cp1 = strrchr (basenames[i], '/');
+        if (cp)
+        {
+            if (!cp1)
+            {
+                zh->errCode = 23;
+                return -1;
+            }
+            if (len != cp1 - basenames[i] ||
+                memcmp (basenames[i], new_reg, len))
+            {
+                zh->errCode = 23;
+                return -1;
+            }
+        }
+        else
+        {
+            if (cp1)
+            {
+                zh->errCode = 23;
+                return -1;
+            }
+        }
+    }
+    zebra_select_register (zh, new_reg);
+    xfree (new_reg);
+    if (!zh->res)
+    {
+        zh->errCode = 109;
+        return -1;
+    }
+    if (!zh->lock_normal || !zh->lock_shadow)
+    {
+        zh->errCode = 2;
+       return -1;
+    }
+    return 0;
+}
+
+int zebra_search_RPN (ZebraHandle zh, ODR o,
+                      Z_RPNQuery *query, const char *setname, int *hits)
 {
+    const char *max;
+    zint maxhits;
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_search_rpn");
+    zh->errCode=0;
     zh->hits = 0;
-    if (zebra_register_lock (zh, 0))
-       return;
-    map_basenames (zh, stream, &num_bases, &basenames);
-    resultSetAddRPN (zh, stream, decode, query, num_bases, basenames, setname);
+    *hits = 0;
+
+    if (zebra_begin_read (zh))
+       return 1;
+
+    zebra_livcode_transform(zh, query);
 
-    zebra_register_unlock (zh);
+    resultSetAddRPN (zh, odr_extract_mem(o), query, 
+                     zh->num_basenames, zh->basenames, setname);
 
-    logf(LOG_APP,"SEARCH:%d:",zh->hits);
+    zebra_end_read (zh);
+    max = res_get (zh->res, "maxhits");
+    if (max)
+       maxhits=atoi(max);
+    else {
+        int i=0; 
+       maxhits=INT_MAX;
+       while (maxhits>100) { maxhits/=10; i++;}
+       while (i--) maxhits *= 10;
+    }
+    if (zh->hits > maxhits) { /* too large for yaz to handle */
+        logf(LOG_LOG,"limiting hits to "ZINT_FORMAT, maxhits);
+       *hits=maxhits;  /* round it down to two digits, to look like rounded */
+    }
+    else
+        *hits = zh->hits;
+    return 0;
 }
 
-void zebra_records_retrieve (ZebraHandle zh, ODR stream,
+int zebra_records_retrieve (ZebraHandle zh, ODR stream,
                             const char *setname, Z_RecordComposition *comp,
                             oid_value input_format, int num_recs,
                             ZebraRetrievalRecord *recs)
 {
     ZebraPosSet poset;
-    int i, *pos_array;
+    int i, *pos_array, ret = 0;
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_records_retrieve n=%d",num_recs);
+    zh->errCode=0;
+
+    if (!zh->res)
+    {
+        zh->errCode = 30;
+        zh->errString = odr_strdup (stream, setname);
+        return -1;
+    }
+    
+    zh->errCode = 0;
+
+    if (zebra_begin_read (zh))
+       return -1;
 
-    if (zebra_register_lock (zh, 0))
-       return;
     pos_array = (int *) xmalloc (num_recs * sizeof(*pos_array));
     for (i = 0; i<num_recs; i++)
        pos_array[i] = recs[i].position;
@@ -620,21 +833,21 @@ void zebra_records_retrieve (ZebraHandle zh, ODR stream,
         logf (LOG_DEBUG, "zebraPosSetCreate error");
         zh->errCode = 30;
         zh->errString = nmem_strdup (stream->mem, setname);
+       ret = -1;
     }
     else
     {
        for (i = 0; i<num_recs; i++)
        {
-           if (!poset[i].sysno)
+           if (poset[i].term)
            {
-               char num_str[20];
-
-               sprintf (num_str, "%d", pos_array[i]);  
-               zh->errCode = 13;
-                zh->errString = nmem_strdup (stream->mem, num_str);
-                break;
+               recs[i].errCode = 0;
+               recs[i].format = VAL_SUTRS;
+               recs[i].len = strlen(poset[i].term);
+               recs[i].buf = poset[i].term;
+               recs[i].base = poset[i].db;
            }
-           else
+           else if (poset[i].sysno)
            {
                recs[i].errCode =
                    zebra_record_fetch (zh, poset[i].sysno, poset[i].score,
@@ -644,42 +857,59 @@ void zebra_records_retrieve (ZebraHandle zh, ODR stream,
                                        &recs[i].base);
                recs[i].errString = NULL;
            }
-       }
-       zebraPosSetDestroy (zh, poset, num_recs);
-    }
-    zebra_register_unlock (zh);
-    xfree (pos_array);
-}
-
-void zebra_scan (ZebraHandle zh, ODR stream, Z_AttributesPlusTerm *zapt,
-                oid_value attributeset,
-                int num_bases, char **basenames,
+           else
+           {
+               char num_str[20];
+
+               sprintf (num_str, "%d", pos_array[i]);  
+               zh->errCode = 13;
+                zh->errString = odr_strdup (stream, num_str);
+               ret = -1;
+                break;
+           }
+       }
+       zebraPosSetDestroy (zh, poset, num_recs);
+    }
+    zebra_end_read (zh);
+    xfree (pos_array);
+    return ret;
+}
+
+int zebra_scan (ZebraHandle zh, ODR stream, Z_AttributesPlusTerm *zapt,
+                oid_value attributeset,
                 int *position, int *num_entries, ZebraScanEntry **entries,
                 int *is_partial)
 {
-    if (zebra_register_lock (zh, 0))
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_scan");
+    zh->errCode=0;
+    if (zebra_begin_read (zh))
     {
        *entries = 0;
        *num_entries = 0;
-       return;
+       return 1;
     }
-    map_basenames (zh, stream, &num_bases, &basenames);
     rpn_scan (zh, stream, zapt, attributeset,
-             num_bases, basenames, position,
-             num_entries, entries, is_partial);
-    zebra_register_unlock (zh);
+             zh->num_basenames, zh->basenames, position,
+             num_entries, entries, is_partial, 0, 0);
+    zebra_end_read (zh);
+    return 0;
 }
 
-void zebra_sort (ZebraHandle zh, ODR stream,
+int zebra_sort (ZebraHandle zh, ODR stream,
                 int num_input_setnames, const char **input_setnames,
                 const char *output_setname, Z_SortKeySpecList *sort_sequence,
                 int *sort_status)
 {
-    if (zebra_register_lock (zh, 0))
-       return;
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_sort");
+    zh->errCode=0;
+    if (zebra_begin_read (zh))
+       return 1;
     resultSetSort (zh, stream->mem, num_input_setnames, input_setnames,
                   output_setname, sort_sequence, sort_status);
-    zebra_register_unlock (zh);
+    zebra_end_read(zh);
+    return 0;
 }
 
 int zebra_deleleResultSet(ZebraHandle zh, int function,
@@ -687,18 +917,21 @@ int zebra_deleleResultSet(ZebraHandle zh, int function,
                          int *statuses)
 {
     int i, status;
-    if (zebra_register_lock (zh, 0))
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_deleleResultSet n=%d",num_setnames);
+    zh->errCode=0;
+    if (zebra_begin_read(zh))
        return Z_DeleteStatus_systemProblemAtTarget;
     switch (function)
     {
-    case Z_DeleteRequest_list:
+    case Z_DeleteResultSetRequest_list:
        resultSetDestroy (zh, num_setnames, setnames, statuses);
        break;
-    case Z_DeleteRequest_all:
+    case Z_DeleteResultSetRequest_all:
        resultSetDestroy (zh, -1, 0, statuses);
        break;
     }
-    zebra_register_unlock (zh);
+    zebra_end_read (zh);
     status = Z_DeleteStatus_success;
     for (i = 0; i<num_setnames; i++)
        if (statuses[i] == Z_DeleteStatus_resultSetDidNotExist)
@@ -708,64 +941,100 @@ int zebra_deleleResultSet(ZebraHandle zh, int function,
 
 int zebra_errCode (ZebraHandle zh)
 {
-    return zh->errCode;
+    if (zh)
+    {
+        yaz_log(LOG_API,"zebra_errCode: %d",zh->errCode);
+        return zh->errCode;
+    }
+    yaz_log(LOG_API,"zebra_errCode: o");
+    return 0; 
 }
 
 const char *zebra_errString (ZebraHandle zh)
 {
-    return diagbib1_str (zh->errCode);
+    const char *e="";
+    if (zh)
+        e= diagbib1_str (zh->errCode);
+    yaz_log(LOG_API,"zebra_errString: %s",e);
+    return e;
 }
 
 char *zebra_errAdd (ZebraHandle zh)
 {
-    return zh->errString;
+    char *a="";
+    if (zh)
+        a= zh->errString;
+    yaz_log(LOG_API,"zebra_errAdd: %s",a);
+    return a;
 }
 
-int zebra_hits (ZebraHandle zh)
+void zebra_clearError(ZebraHandle zh)
 {
-    return zh->hits;
+    if (zh)
+    {
+        zh->errCode=0;
+        zh->errString="";
+    }
 }
 
-int zebra_auth (ZebraService zh, const char *user, const char *pass)
+int zebra_auth (ZebraHandle zh, const char *user, const char *pass)
 {
-    if (!zh->passwd_db || !passwd_db_auth (zh->passwd_db, user, pass))
-    {
-        logf(LOG_APP,"AUTHOK:%s", user?user:"ANONYMOUS");
-       return 0;
-    }
+    const char *p;
+    char u[40];
+    ZebraService zs;
+
+    ASSERTZH;
+    zh->errCode=0;
+    zs= zh->service;
+    
+    sprintf(u, "perm.%.30s", user ? user : "anonymous");
+    p = res_get(zs->global_res, u);
+    xfree (zh->user_perm);
+    zh->user_perm = xstrdup(p ? p : "r");
 
-    logf(LOG_APP,"AUTHFAIL:%s", user?user:"ANONYMOUS");
+    /* users that don't require a password .. */
+    if (zh->user_perm && strchr(zh->user_perm, 'a'))
+       return 0;
+    
+    if (!zs->passwd_db || !passwd_db_auth (zs->passwd_db, user, pass))
+       return 0;
     return 1;
 }
 
-void zebra_admin_import_begin (ZebraHandle zh, const char *database)
+int zebra_admin_import_begin (ZebraHandle zh, const char *database,
+                               const char *record_type)
 {
-    if (zebra_register_lock (zh, 1))
-       return;
-    xfree (zh->admin_databaseName);
-    zh->admin_databaseName = xstrdup(database);
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_admin_import_begin db=%s rt=%s", 
+                    database, record_type);
+    zh->errCode=0;
+    if (zebra_select_database(zh, database))
+        return 1;
+    if (zebra_begin_trans (zh, 1))
+       return 1;
+    return 0;
 }
 
-void zebra_admin_import_end (ZebraHandle zh)
+int zebra_admin_import_end (ZebraHandle zh)
 {
-    zebraExplain_flush (zh->service->zei, 1, zh);
-    extract_index (zh);
-    zebra_register_unlock (zh);
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_admin_import_end");
+    zh->errCode=0;
+    zebra_end_trans (zh);
+    return 0;
 }
 
-void zebra_admin_import_segment (ZebraHandle zh, Z_Segment *segment)
+int zebra_admin_import_segment (ZebraHandle zh, Z_Segment *segment)
 {
-    int sysno;
+    SYSNO sysno;
     int i;
-    if (zh->service->active < 2)
-       return;
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_admin_import_segment");
+    zh->errCode=0;
     for (i = 0; i<segment->num_segmentRecords; i++)
     {
        Z_NamePlusRecord *npr = segment->segmentRecords[i];
-       const char *databaseName = npr->databaseName;
 
-       if (!databaseName)
-           databaseName = zh->admin_databaseName;
        printf ("--------------%d--------------------\n", i);
        if (npr->which == Z_NamePlusRecord_intermediateFragment)
        {
@@ -777,37 +1046,164 @@ void zebra_admin_import_segment (ZebraHandle zh, Z_Segment *segment)
                        oct->buf);
                
                sysno = 0;
-               extract_rec_in_mem (zh, "grs.sgml",
+               
+               zebra_update_record(zh, 
+                                   0, /* record Type */
+                                   &sysno,
+                                   0, /* match */
+                                   0, /* fname */
                                    oct->buf, oct->len,
-                                   databaseName,
-                                   0 /* delete_flag */,
-                                   0 /* test_mode */,
-                                   &sysno /* sysno */,
-                                   1 /* store_keys */,
-                                   1 /* store_data */,
-                                   0 /* match criteria */);
+                                   0);
            }
        }
     }
+    return 0;
 }
 
-void zebra_admin_create (ZebraHandle zh, const char *database)
+int zebra_admin_exchange_record (ZebraHandle zh,
+                                 const char *rec_buf,
+                                 size_t rec_len,
+                                 const char *recid_buf, size_t recid_len,
+                                 int action)
+    /* 1 = insert. Fail it already exists */
+    /* 2 = replace. Fail it does not exist */
+    /* 3 = delete. Fail if does not exist */
+    /* 4 = update. Insert/replace */
 {
-    ZebraService zs = zh->service;
-    if (zebra_register_lock(zh, 1))
+    SYSNO sysno = 0;
+    char *rinfo = 0;
+    char recid_z[256];
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_admin_exchange_record ac=%d", action);
+    zh->errCode=0;
+
+    if (!recid_buf || recid_len <= 0 || recid_len >= sizeof(recid_z))
+        return -1;
+    memcpy (recid_z, recid_buf, recid_len);
+    recid_z[recid_len] = 0;
+
+    if (zebra_begin_trans(zh, 1))
+       return -1;
+
+    rinfo = dict_lookup (zh->reg->matchDict, recid_z);
+    if (rinfo)
     {
-       zh->errCode = 1019;
-       return;
+        if (action == 1)  /* fail if insert */
+        {
+            zebra_end_trans(zh);
+            return -1;
+       }
+
+        memcpy (&sysno, rinfo+1, sizeof(sysno));
+    }
+    else
+    {
+        if (action == 2 || action == 3) /* fail if delete or update */
+        {
+           zebra_end_trans(zh);
+            return -1;
+       }
+       action = 1;  /* make it an insert (if it's an update).. */
     }
+    buffer_extract_record (zh, rec_buf, rec_len,
+                          action == 3 ? 1 : 0 /* delete flag */,
+                          0, /* test mode */
+                          0, /* recordType */
+                          &sysno, 
+                          0, /* match */
+                          0, /* fname */
+                          0, /* force update */
+                          1  /* allow update */
+       );
+    if (action == 1)
+    {
+        dict_insert (zh->reg->matchDict, recid_z, sizeof(sysno), &sysno);
+    }
+    else if (action == 3)
+    {
+        dict_delete (zh->reg->matchDict, recid_z);
+    }
+    zebra_end_trans(zh);
+    return 0;
+}
+
+int delete_w_handle(const char *info, void *handle)
+{
+    ZebraHandle zh = (ZebraHandle) handle;
+    ISAMC_P pos;
+
+    if (*info == sizeof(pos))
+    {
+       memcpy (&pos, info+1, sizeof(pos));
+       isamb_unlink(zh->reg->isamb, pos);
+    }
+    return 0;
+}
+
+static int delete_SU_handle(void *handle, int ord)
+{
+    ZebraHandle zh = (ZebraHandle) handle;
+    char ord_buf[20];
+    int ord_len;
+
+    ord_len = key_SU_encode (ord, ord_buf);
+    ord_buf[ord_len] = '\0';
+
+    assert (zh->reg->isamb);
+    dict_delete_subtree(zh->reg->dict, ord_buf,
+                       zh, delete_w_handle);
+    return 0;
+}
+
+int zebra_drop_database  (ZebraHandle zh, const char *database)
+{
+    int ret = 0;
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_drop_database");
+    zh->errCode = 0;
+
+    if (zebra_select_database (zh, database))
+        return -1;
+    if (zebra_begin_trans (zh, 1))
+        return -1;
+    if (zh->reg->isamb)
+    {
+       zebraExplain_curDatabase (zh->reg->zei, database);
+       
+       zebraExplain_trav_ord(zh->reg->zei, zh, delete_SU_handle);
+       zebraExplain_removeDatabase(zh->reg->zei, zh);
+    }
+    else
+    {
+       yaz_log(LOG_WARN, "drop database only supported for isam:b");
+       ret = -1;
+    }
+    zebra_end_trans (zh);
+    return ret;
+}
+
+int zebra_create_database (ZebraHandle zh, const char *database)
+{
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_create_database");
+    zh->errCode=0;
+
+    if (zebra_select_database (zh, database))
+        return -1;
+    if (zebra_begin_trans (zh, 1))
+        return -1;
+
     /* announce database */
-    if (zebraExplain_newDatabase (zs->zei, database, 0 /* explainDatabase */))
+    if (zebraExplain_newDatabase (zh->reg->zei, database, 0 
+                                  /* explainDatabase */))
     {
+        zebra_end_trans (zh);
        zh->errCode = 224;
-       zh->errString = "Database already exist";
+       zh->errString = "database already exist";
+       return -1;
     }
-    zebraExplain_flush (zh->service->zei, 1, zh);
-    extract_index (zh);
-    zebra_register_unlock(zh);
+    zebra_end_trans (zh);
+    return 0;
 }
 
 int zebra_string_norm (ZebraHandle zh, unsigned reg_id,
@@ -815,9 +1211,12 @@ int zebra_string_norm (ZebraHandle zh, unsigned reg_id,
                       char *output_str, int output_len)
 {
     WRBUF wrbuf;
-    if (!zh->service->zebra_maps)
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_string_norm ");
+    zh->errCode=0;
+    if (!zh->reg->zebra_maps)
        return -1;
-    wrbuf = zebra_replace(zh->service->zebra_maps, reg_id, "",
+    wrbuf = zebra_replace(zh->reg->zebra_maps, reg_id, "",
                          input_str, input_len);
     if (!wrbuf)
        return -2;
@@ -829,806 +1228,866 @@ int zebra_string_norm (ZebraHandle zh, unsigned reg_id,
     return wrbuf_len(wrbuf);
 }
 
-static void extract_init (struct recExtractCtrl *p, RecWord *w)
+
+int zebra_set_state (ZebraHandle zh, int val, int seqno)
 {
-    w->zebra_maps = p->zebra_maps;
-    w->seqnos = p->seqno;
-    w->attrSet = VAL_BIB1;
-    w->attrUse = 1016;
-    w->reg_type = 'w';
-    w->extractCtrl = p;
+    char state_fname[256];
+    char *fname;
+    long p = getpid();
+    FILE *f;
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_set_state v=%d seq=%d", val, seqno);
+    zh->errCode=0;
+
+    sprintf (state_fname, "state.%s.LCK", zh->reg_name);
+    fname = zebra_mk_fname (res_get(zh->res, "lockDir"), state_fname);
+    f = fopen (fname, "w");
+
+    yaz_log (LOG_DEBUG, "%c %d %ld", val, seqno, p);
+    fprintf (f, "%c %d %ld\n", val, seqno, p);
+    fclose (f);
+    xfree (fname);
+    return 0;
 }
 
-static void extract_add_index_string (RecWord *p, const char *string,
-                                     int length)
+int zebra_get_state (ZebraHandle zh, char *val, int *seqno)
 {
-    char *dst;
-    unsigned char attrSet;
-    unsigned short attrUse;
-    int lead = 0;
-    int diff = 0;
-    int *pseqno = &p->seqnos[p->reg_type];
-    ZebraHandle zh = p->extractCtrl->handle;
-    struct recKeys *keys = &zh->keys;
-
-    if (keys->buf_used+1024 > keys->buf_max)
+    char state_fname[256];
+    char *fname;
+    FILE *f;
+
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_get_state ");
+    zh->errCode=0;
+    sprintf (state_fname, "state.%s.LCK", zh->reg_name);
+    fname = zebra_mk_fname (res_get(zh->res, "lockDir"), state_fname);
+    f = fopen (fname, "r");
+    *val = 'o';
+    *seqno = 0;
+
+    if (f)
     {
-        char *b;
-
-        b = (char *) xmalloc (keys->buf_max += 128000);
-        if (keys->buf_used > 0)
-            memcpy (b, keys->buf, keys->buf_used);
-        xfree (keys->buf);
-        keys->buf = b;
+        fscanf (f, "%c %d", val, seqno);
+        fclose (f);
     }
-    dst = keys->buf + keys->buf_used;
-
-    attrSet = p->attrSet;
-    if (keys->buf_used > 0 && keys->prevAttrSet == attrSet)
-        lead |= 1;
-    else
-        keys->prevAttrSet = attrSet;
-    attrUse = p->attrUse;
-    if (keys->buf_used > 0 && keys->prevAttrUse == attrUse)
-        lead |= 2;
-    else
-        keys->prevAttrUse = attrUse;
-#if 1
-    diff = 1 + *pseqno - keys->prevSeqNo;
-    if (diff >= 1 && diff <= 15)
-        lead |= (diff << 2);
-    else
-        diff = 0;
-#endif
-    keys->prevSeqNo = *pseqno;
-    
-    *dst++ = lead;
+    xfree (fname);
+    return 0;
+}
 
-    if (!(lead & 1))
-    {
-        memcpy (dst, &attrSet, sizeof(attrSet));
-        dst += sizeof(attrSet);
-    }
-    if (!(lead & 2))
-    {
-        memcpy (dst, &attrUse, sizeof(attrUse));
-        dst += sizeof(attrUse);
-    }
-    *dst++ = p->reg_type;
-    memcpy (dst, string, length);
-    dst += length;
-    *dst++ = '\0';
+int zebra_begin_read (ZebraHandle zh)
+{
+    return zebra_begin_trans(zh, 0);
+}
 
-    if (!diff)
-    {
-        memcpy (dst, pseqno, sizeof(*pseqno));
-        dst += sizeof(*pseqno);
-    }
-    keys->buf_used = dst - keys->buf;
-    if (*pseqno)
-       (*pseqno)++;
+int zebra_end_read (ZebraHandle zh)
+{
+    return zebra_end_trans(zh);
 }
 
-static void extract_add_sort_string (RecWord *p, const char *string,
-                                    int length)
+static void read_res_for_transaction(ZebraHandle zh)
 {
-    struct sortKey *sk;
-    ZebraHandle zh = p->extractCtrl->handle;
-    struct sortKey *sortKeys = zh->sortKeys;
+    const char *group = res_get(zh->res, "group");
+    const char *v;
+    
+    zh->m_group = group;
+    v = res_get_prefix(zh->res, "followLinks", group, "1");
+    zh->m_follow_links = atoi(v);
 
-    for (sk = sortKeys; sk; sk = sk->next)
-       if (sk->attrSet == p->attrSet && sk->attrUse == p->attrUse)
-           return;
+    zh->m_record_id = res_get_prefix(zh->res, "recordId", group, 0);
+    zh->m_record_type = res_get_prefix(zh->res, "recordType", group, 0);
 
-    sk = (struct sortKey *) xmalloc (sizeof(*sk));
-    sk->next = sortKeys;
-    sortKeys = sk;
+    v = res_get_prefix(zh->res, "storeKeys", group, "1");
+    zh->m_store_keys = atoi(v);
 
-    sk->string = (char *) xmalloc (length);
-    sk->length = length;
-    memcpy (sk->string, string, length);
+    v = res_get_prefix(zh->res, "storeData", group, "1");
+    zh->m_store_data = atoi(v);
 
-    sk->attrSet = p->attrSet;
-    sk->attrUse = p->attrUse;
-}
+    v = res_get_prefix(zh->res, "explainDatabase", group, "0");
+    zh->m_explain_database = atoi(v);
 
-static void extract_add_string (RecWord *p, const char *string, int length)
-{
-    assert (length > 0);
-    if (zebra_maps_is_sort (p->zebra_maps, p->reg_type))
-       extract_add_sort_string (p, string, length);
-    else
-       extract_add_index_string (p, string, length);
+    v = res_get_prefix(zh->res, "openRW", group, "1");
+    zh->m_flag_rw = atoi(v);
+
+    v = res_get_prefix(zh->res, "fileVerboseLimit", group, "100000");
+    zh->m_file_verbose_limit = atoi(v);
 }
 
-static void extract_add_incomplete_field (RecWord *p)
+int zebra_begin_trans (ZebraHandle zh, int rw)
 {
-    const char *b = p->string;
-    int remain = p->length;
-    const char **map = 0;
-
-    if (remain > 0)
-       map = zebra_maps_input(p->zebra_maps, p->reg_type, &b, remain);
-
-    while (map)
+    if (!zh->res)
     {
-       char buf[IT_MAX_WORD+1];
-       int i, remain;
+        zh->errCode = 2;
+        zh->errString = "zebra_begin_trans: no database selected";
+        return -1;
+    }
+    ASSERTZHRES;
+    yaz_log(LOG_API,"zebra_begin_trans rw=%d",rw);
 
-       /* Skip spaces */
-       while (map && *map && **map == *CHR_SPACE)
-       {
-           remain = p->length - (b - p->string);
-           if (remain > 0)
-               map = zebra_maps_input(p->zebra_maps, p->reg_type, &b, remain);
-           else
-               map = 0;
-       }
-       if (!map)
-           break;
-       i = 0;
-       while (map && *map && **map != *CHR_SPACE)
+    if (zh->user_perm)
+    {
+       if (rw && !strchr(zh->user_perm, 'w'))
        {
-           const char *cp = *map;
-
-           while (i < IT_MAX_WORD && *cp)
-               buf[i++] = *(cp++);
-           remain = p->length - (b - p->string);
-           if (remain > 0)
-               map = zebra_maps_input(p->zebra_maps, p->reg_type, &b, remain);
-           else
-               map = 0;
+           zh->errCode = 223;
+           zh->errString = 0;
+           return -1;
        }
-       if (!i)
-           return;
-       extract_add_string (p, buf, i);
     }
-    (p->seqnos[p->reg_type])++; /* to separate this from next one  */
-}
-
-static void extract_add_complete_field (RecWord *p)
-{
-    const char *b = p->string;
-    char buf[IT_MAX_WORD+1];
-    const char **map = 0;
-    int i = 0, remain = p->length;
 
-    if (remain > 0)
-       map = zebra_maps_input (p->zebra_maps, p->reg_type, &b, remain);
-
-    while (remain > 0 && i < IT_MAX_WORD)
+    assert (zh->res);
+    if (rw)
     {
-       while (map && *map && **map == *CHR_SPACE)
+        int pass;
+        int seqno = 0;
+        char val = '?';
+        const char *rval = 0;
+        
+        (zh->trans_no++);
+        if (zh->trans_w_no)
        {
-           remain = p->length - (b - p->string);
-           if (remain > 0)
-               map = zebra_maps_input(p->zebra_maps, p->reg_type, &b, remain);
-           else
-               map = 0;
+           read_res_for_transaction(zh);
+            return 0;
        }
-       if (!map)
-           break;
-
-       if (i && i < IT_MAX_WORD)
-           buf[i++] = *CHR_SPACE;
-       while (map && *map && **map != *CHR_SPACE)
+        if (zh->trans_no != 1)
+        {
+            zh->errCode = 2;
+            zh->errString = "zebra_begin_trans: write trans not allowed within read trans";
+            return -1;
+        }
+        if (zh->reg)
        {
-           const char *cp = *map;
-
-           if (i >= IT_MAX_WORD)
-               break;
-           while (i < IT_MAX_WORD && *cp)
-               buf[i++] = *(cp++);
-           remain = p->length  - (b - p->string);
-           if (remain > 0)
-               map = zebra_maps_input (p->zebra_maps, p->reg_type, &b,
-                                       remain);
-           else
-               map = 0;
+            resultSetInvalidate (zh);
+            zebra_register_close (zh->service, zh->reg);
        }
+        zh->trans_w_no = zh->trans_no;
+
+        zh->errCode=0;
+        
+        zh->records_inserted = 0;
+        zh->records_updated = 0;
+        zh->records_deleted = 0;
+        zh->records_processed = 0;
+        
+#if HAVE_SYS_TIMES_H
+        times (&zh->tms1);
+#endif
+        /* lock */
+        if (zh->shadow_enable)
+            rval = res_get (zh->res, "shadow");
+        
+        for (pass = 0; pass < 2; pass++)
+        {
+            if (rval)
+            {
+                zebra_lock_r (zh->lock_normal);
+                zebra_lock_w (zh->lock_shadow);
+            }
+            else
+            {
+                zebra_lock_w (zh->lock_normal);
+                zebra_lock_w (zh->lock_shadow);
+            }
+            
+            zebra_get_state (zh, &val, &seqno);
+            if (val == 'c')
+            {
+                yaz_log (LOG_LOG, "previous transaction didn't finish commit");
+                zebra_unlock (zh->lock_shadow);
+                zebra_unlock (zh->lock_normal);
+                zebra_commit (zh);
+                continue;
+            }
+            else if (val == 'd')
+            {
+                if (rval)
+                {
+                    BFiles bfs = bfs_create (res_get (zh->res, "shadow"),
+                                             zh->path_reg);
+                    yaz_log (LOG_LOG, "previous transaction didn't reach commit");
+                    bf_commitClean (bfs, rval);
+                    bfs_destroy (bfs);
+            }
+                else
+                {
+                    yaz_log (LOG_WARN, "your previous transaction didn't finish");
+                }
+            }
+            break;
+        }
+        if (pass == 2)
+        {
+            yaz_log (LOG_FATAL, "zebra_begin_trans couldn't finish commit");
+            abort();
+            return -1;
+        }
+        zebra_set_state (zh, 'd', seqno);
+        
+        zh->reg = zebra_register_open (zh->service, zh->reg_name,
+                                       1, rval ? 1 : 0, zh->res,
+                                       zh->path_reg);
+        if (zh->reg)
+            zh->reg->seqno = seqno;
+        else
+        {
+            zebra_set_state (zh, 'o', seqno);
+            
+            zebra_unlock (zh->lock_shadow);
+            zebra_unlock (zh->lock_normal);
+
+            zh->trans_no--;
+            zh->trans_w_no = 0;
+
+            zh->errCode = 2;
+            zh->errString = "zebra_begin_trans: cannot open register";
+            yaz_log(LOG_FATAL, zh->errString);
+            return -1;
+        }
     }
-    if (!i)
-       return;
-    extract_add_string (p, buf, i);
-}
-
-static void extract_token_add (RecWord *p)
-{
-    WRBUF wrbuf;
-    if ((wrbuf = zebra_replace(p->zebra_maps, p->reg_type, 0,
-                              p->string, p->length)))
+    else
     {
-       p->string = wrbuf_buf(wrbuf);
-       p->length = wrbuf_len(wrbuf);
+        int dirty = 0;
+        char val;
+        int seqno;
+        
+        (zh->trans_no)++;
+        
+        if (zh->trans_no != 1)
+        {
+            zebra_flush_reg (zh);
+            return 0;
+        }
+        zh->errCode=0;
+#if HAVE_SYS_TIMES_H
+        times (&zh->tms1);
+#endif
+        if (!zh->res)
+        {
+            (zh->trans_no)--;
+            zh->errCode = 109;
+            return -1;
+        }
+        if (!zh->lock_normal || !zh->lock_shadow)
+        {
+            (zh->trans_no)--;
+            zh->errCode = 2;
+            return -1;
+        }
+        zebra_get_state (zh, &val, &seqno);
+        if (val == 'd')
+            val = 'o';
+        
+        if (!zh->reg)
+            dirty = 1;
+        else if (seqno != zh->reg->seqno)
+        {
+            yaz_log (LOG_LOG, "reopen seqno cur/old %d/%d",
+                     seqno, zh->reg->seqno);
+            dirty = 1;
+        }
+        else if (zh->reg->last_val != val)
+        {
+            yaz_log (LOG_LOG, "reopen last cur/old %d/%d",
+                     val, zh->reg->last_val);
+            dirty = 1;
+        }
+        if (!dirty)
+            return 0;
+        
+        if (val == 'c')
+            zebra_lock_r (zh->lock_shadow);
+        else
+            zebra_lock_r (zh->lock_normal);
+        
+        if (zh->reg)
+       {
+            resultSetInvalidate (zh);
+            zebra_register_close (zh->service, zh->reg);
+       }
+        zh->reg = zebra_register_open (zh->service, zh->reg_name,
+                                       0, val == 'c' ? 1 : 0,
+                                       zh->res, zh->path_reg);
+        if (!zh->reg)
+        {
+            zebra_unlock (zh->lock_normal);
+            zebra_unlock (zh->lock_shadow);
+            zh->trans_no--;
+            zh->errCode = 109;
+            return -1;
+        }
+        zh->reg->last_val = val;
+        zh->reg->seqno = seqno;
     }
-    if (zebra_maps_is_complete (p->zebra_maps, p->reg_type))
-       extract_add_complete_field (p);
-    else
-       extract_add_incomplete_field(p);
+    read_res_for_transaction(zh);
+    return 0;
 }
 
-static void extract_schema_add (struct recExtractCtrl *p, Odr_oid *oid)
+int zebra_end_trans (ZebraHandle zh)
 {
-    ZebraHandle zh = (ZebraHandle) (p->handle);
-    zebraExplain_addSchema (zh->service->zei, oid);
+    ZebraTransactionStatus dummy;
+    yaz_log(LOG_API,"zebra_end_trans");
+    return zebra_end_transaction(zh, &dummy);
 }
 
-static void extract_flushSortKeys (ZebraHandle zh, SYSNO sysno,
-                                  int cmd, struct sortKey **skp)
+int zebra_end_transaction (ZebraHandle zh, ZebraTransactionStatus *status)
 {
-    struct sortKey *sk = *skp;
-    SortIdx sortIdx = zh->service->sortIdx;
+    char val;
+    int seqno;
+    const char *rval;
 
-    sortIdx_sysno (sortIdx, sysno);
-    while (sk)
-    {
-       struct sortKey *sk_next = sk->next;
-       sortIdx_type (sortIdx, sk->attrUse);
-       sortIdx_add (sortIdx, sk->string, sk->length);
-       xfree (sk->string);
-       xfree (sk);
-       sk = sk_next;
-    }
-    *skp = 0;
-}
-
-struct encode_info {
-    int  sysno;
-    int  seqno;
-    int  cmd;
-    char buf[768];
-};
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_end_transaction");
 
-void encode_key_init (struct encode_info *i)
-{
-    i->sysno = 0;
-    i->seqno = 0;
-    i->cmd = -1;
-}
+    status->processed = 0;
+    status->inserted  = 0;
+    status->updated   = 0;
+    status->deleted   = 0;
+    status->utime     = 0;
+    status->stime     = 0;
 
-char *encode_key_int (int d, char *bp)
-{
-    if (d <= 63)
-        *bp++ = d;
-    else if (d <= 16383)
+    if (!zh->res || !zh->reg)
     {
-        *bp++ = 64 + (d>>8);
-        *bp++ = d  & 255;
+        zh->errCode = 2;
+        zh->errString = "zebra_end_trans: no open transaction";
+        return -1;
     }
-    else if (d <= 4194303)
+    if (zh->trans_no != zh->trans_w_no)
     {
-        *bp++ = 128 + (d>>16);
-        *bp++ = (d>>8) & 255;
-        *bp++ = d & 255;
+        zh->trans_no--;
+        if (zh->trans_no != 0)
+            return 0;
+
+        /* release read lock */
+
+        zebra_unlock (zh->lock_normal);
+        zebra_unlock (zh->lock_shadow);
     }
     else
-    {
-        *bp++ = 192 + (d>>24);
-        *bp++ = (d>>16) & 255;
-        *bp++ = (d>>8) & 255;
-        *bp++ = d & 255;
+    {   /* release write lock */
+        zh->trans_no--;
+        zh->trans_w_no = 0;
+        
+        yaz_log (LOG_LOG, "zebra_end_trans");
+        rval = res_get (zh->res, "shadow");
+        
+        zebraExplain_runNumberIncrement (zh->reg->zei, 1);
+        
+        zebra_flush_reg (zh);
+        
+        resultSetInvalidate (zh);
+
+        zebra_register_close (zh->service, zh->reg);
+        zh->reg = 0;
+        
+        yaz_log (LOG_LOG, "Records: "ZINT_FORMAT" i/u/d "
+                       ZINT_FORMAT"/"ZINT_FORMAT"/"ZINT_FORMAT, 
+                 zh->records_processed, zh->records_inserted,
+                 zh->records_updated, zh->records_deleted);
+        
+        status->processed = zh->records_processed;
+        status->inserted = zh->records_inserted;
+        status->updated = zh->records_updated;
+        status->deleted = zh->records_deleted;
+        
+        zebra_get_state (zh, &val, &seqno);
+        if (val != 'd')
+        {
+            BFiles bfs = bfs_create (rval, zh->path_reg);
+            yaz_log (LOG_LOG, "deleting shadow stuff val=%c", val);
+            bf_commitClean (bfs, rval);
+            bfs_destroy (bfs);
+        }
+        if (!rval)
+            seqno++;
+        zebra_set_state (zh, 'o', seqno);
+        
+        zebra_unlock (zh->lock_shadow);
+        zebra_unlock (zh->lock_normal);
+        
     }
-    return bp;
+#if HAVE_SYS_TIMES_H
+    times (&zh->tms2);
+    logf (LOG_LOG, "user/system: %ld/%ld",
+          (long) (zh->tms2.tms_utime - zh->tms1.tms_utime),
+          (long) (zh->tms2.tms_stime - zh->tms1.tms_stime));
+    
+    status->utime = (long) (zh->tms2.tms_utime - zh->tms1.tms_utime);
+    status->stime = (long) (zh->tms2.tms_stime - zh->tms1.tms_stime);
+#endif
+    return 0;
 }
 
-void encode_key_write (char *k, struct encode_info *i, FILE *outf)
+int zebra_repository_update (ZebraHandle zh, const char *path)
 {
-    struct it_key key;
-    char *bp = i->buf;
-
-    while ((*bp++ = *k++))
-        ;
-    memcpy (&key, k+1, sizeof(struct it_key));
-    bp = encode_key_int ( (key.sysno - i->sysno) * 2 + *k, bp);
-    if (i->sysno != key.sysno)
-    {
-        i->sysno = key.sysno;
-        i->seqno = 0;
-    }
-    else if (!i->seqno && !key.seqno && i->cmd == *k)
-       return;
-    bp = encode_key_int (key.seqno - i->seqno, bp);
-    i->seqno = key.seqno;
-    i->cmd = *k;
-    if (fwrite (i->buf, bp - i->buf, 1, outf) != 1)
-    {
-        logf (LOG_FATAL|LOG_ERRNO, "fwrite");
-        exit (1);
-    }
+    ASSERTZH;
+    zh->errCode=0;
+    logf (LOG_LOG|LOG_API, "updating %s", path);
+    repositoryUpdate (zh, path);
+    return zh->errCode;
 }
 
-static void extract_flushWriteKeys (ZebraHandle zh)
+int zebra_repository_delete (ZebraHandle zh, const char *path)
 {
-    FILE *outf;
-    char out_fname[200];
-    char *prevcp, *cp;
-    struct encode_info encode_info;
-    int ptr_i = zh->ptr_i;
-#if SORT_EXTRA
-    int i;
-#endif
-    if (!zh->key_buf || ptr_i <= 0)
-        return;
+    ASSERTZH;
+    zh->errCode=0;
+    logf (LOG_LOG|LOG_API, "deleting %s", path);
+    repositoryDelete (zh, path);
+    return zh->errCode;
+}
 
-    (zh->key_file_no)++;
-    logf (LOG_LOG, "sorting section %d", (zh->key_file_no));
-#if !SORT_EXTRA
-    qsort (zh->key_buf + zh->ptr_top - ptr_i, ptr_i, sizeof(char*),
-           key_qsort_compare);
-    extract_get_fname_tmp (zh, out_fname, zh->key_file_no);
+int zebra_repository_show (ZebraHandle zh, const char *path)
+{
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_repository_show");
+    zh->errCode=0;
+    repositoryShow (zh, path);
+    return zh->errCode;
+}
 
-    if (!(outf = fopen (out_fname, "wb")))
+static int zebra_commit_ex (ZebraHandle zh, int clean_only)
+{
+    int seqno;
+    char val;
+    const char *rval;
+    BFiles bfs;
+    ASSERTZH;
+    zh->errCode=0;
+
+    if (!zh->res)
     {
-        logf (LOG_FATAL|LOG_ERRNO, "fopen %s", out_fname);
-        exit (1);
+        zh->errCode = 109;
+        return -1;
     }
-    logf (LOG_LOG, "writing section %d", zh->key_file_no);
-    prevcp = cp = (zh->key_buf)[zh->ptr_top - ptr_i];
-    
-    encode_key_init (&encode_info);
-    encode_key_write (cp, &encode_info, outf);
-    
-    while (--ptr_i > 0)
+    rval = res_get (zh->res, "shadow");    
+    if (!rval)
     {
-        cp = (zh->key_buf)[zh->ptr_top - ptr_i];
-        if (strcmp (cp, prevcp))
-        {
-            encode_key_init (&encode_info);
-            encode_key_write (cp, &encode_info, outf);
-            prevcp = cp;
-        }
-        else
-            encode_key_write (cp + strlen(cp), &encode_info, outf);
+        logf (LOG_WARN, "Cannot perform commit");
+        logf (LOG_WARN, "No shadow area defined");
+        return 0;
     }
-#else
-    qsort (key_buf + ptr_top-ptr_i, ptr_i, sizeof(char*), key_x_compare);
-    extract_get_fname_tmp (out_fname, key_file_no);
 
-    if (!(outf = fopen (out_fname, "wb")))
+    zebra_lock_w (zh->lock_normal);
+    zebra_lock_r (zh->lock_shadow);
+
+    bfs = bfs_create (res_get (zh->res, "register"), zh->path_reg);
+
+    zebra_get_state (zh, &val, &seqno);
+
+    if (rval && *rval)
+        bf_cache (bfs, rval);
+    if (bf_commitExists (bfs))
     {
-        logf (LOG_FATAL|LOG_ERRNO, "fopen %s", out_fname);
-        exit (1);
-    }
-    logf (LOG_LOG, "writing section %d", key_file_no);
-    i = ptr_i;
-    prevcp =  key_buf[ptr_top-i];
-    while (1)
-        if (!--i || strcmp (prevcp, key_buf[ptr_top-i]))
+        if (clean_only)
+            zebra_set_state (zh, 'd', seqno);
+        else
         {
-            key_y_len = strlen(prevcp)+1;
-#if 0
-            logf (LOG_LOG, "key_y_len: %2d %02x %02x %s",
-                      key_y_len, prevcp[0], prevcp[1], 2+prevcp);
+            zebra_set_state (zh, 'c', seqno);
+            
+            logf (LOG_LOG, "commit start");
+            bf_commitExec (bfs);
+#ifndef WIN32
+            sync ();
 #endif
-            qsort (key_buf + ptr_top-ptr_i, ptr_i - i,
-                                   sizeof(char*), key_y_compare);
-            cp = key_buf[ptr_top-ptr_i];
-            --key_y_len;
-            encode_key_init (&encode_info);
-            encode_key_write (cp, &encode_info, outf);
-            while (--ptr_i > i)
-            {
-                cp = key_buf[ptr_top-ptr_i];
-                encode_key_write (cp+key_y_len, &encode_info, outf);
-            }
-            if (!i)
-                break;
-            prevcp = key_buf[ptr_top-ptr_i];
         }
-#endif
-    if (fclose (outf))
+        logf (LOG_LOG, "commit clean");
+        bf_commitClean (bfs, rval);
+        seqno++;
+        zebra_set_state (zh, 'o', seqno);
+    }
+    else
     {
-        logf (LOG_FATAL|LOG_ERRNO, "fclose %s", out_fname);
-        exit (1);
+        logf (LOG_LOG, "nothing to commit");
     }
-    logf (LOG_LOG, "finished section %d", zh->key_file_no);
-    zh->ptr_i = 0;
-    zh->key_buf_used = 0;
+    bfs_destroy (bfs);
+
+    zebra_unlock (zh->lock_shadow);
+    zebra_unlock (zh->lock_normal);
+    return 0;
+}
+
+int zebra_clean (ZebraHandle zh)
+{
+    yaz_log(LOG_API,"zebra_clean");
+    return zebra_commit_ex(zh, 1);
 }
 
-static void extract_flushRecordKeys (ZebraHandle zh, SYSNO sysno,
-                                    int cmd, struct recKeys *reckeys)
+int zebra_commit (ZebraHandle zh)
 {
-    unsigned char attrSet = (unsigned char) -1;
-    unsigned short attrUse = (unsigned short) -1;
-    int seqno = 0;
-    int off = 0;
-    ZebraExplainInfo zei = zh->service->zei;
+    yaz_log(LOG_API,"zebra_commit");
+    return zebra_commit_ex(zh, 0);
+}
 
-    if (!zh->key_buf)
+int zebra_init (ZebraHandle zh)
+{
+    const char *rval;
+    BFiles bfs = 0;
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_init");
+    zh->errCode=0;
+
+    if (!zh->res)
     {
-       int mem = 8*1024*1024;
-       zh->key_buf = (char**) xmalloc (mem);
-       zh->ptr_top = mem/sizeof(char*);
-       zh->ptr_i = 0;
-       zh->key_buf_used = 0;
-       zh->key_file_no = 0;
+        zh->errCode = 109;
+        return -1;
     }
-    zebraExplain_recordCountIncrement (zei, cmd ? 1 : -1);
-    while (off < reckeys->buf_used)
-    {
-        const char *src = reckeys->buf + off;
-        struct it_key key;
-        int lead, ch;
+    rval = res_get (zh->res, "shadow");
+
+    bfs = bfs_create (res_get (zh->service->global_res, "register"),
+                      zh->path_reg);
+    if (rval && *rval)
+        bf_cache (bfs, rval);
     
-        lead = *src++;
+    bf_reset (bfs);
+    bfs_destroy (bfs);
+    zebra_set_state (zh, 'o', 0);
+    return 0;
+}
 
-        if (!(lead & 1))
-        {
-            memcpy (&attrSet, src, sizeof(attrSet));
-            src += sizeof(attrSet);
-        }
-        if (!(lead & 2))
-        {
-            memcpy (&attrUse, src, sizeof(attrUse));
-            src += sizeof(attrUse);
-        }
-        if (zh->key_buf_used + 1024 > (zh->ptr_top-zh->ptr_i)*sizeof(char*))
-            extract_flushWriteKeys (zh);
-        ++(zh->ptr_i);
-        (zh->key_buf)[zh->ptr_top - zh->ptr_i] =
-           (char*)zh->key_buf + zh->key_buf_used;
-
-        ch = zebraExplain_lookupSU (zei, attrSet, attrUse);
-        if (ch < 0)
-            ch = zebraExplain_addSU (zei, attrSet, attrUse);
-        assert (ch > 0);
-       zh->key_buf_used +=
-           key_SU_code (ch,((char*)zh->key_buf) + zh->key_buf_used);
-
-        while (*src)
-            ((char*)zh->key_buf) [(zh->key_buf_used)++] = *src++;
-        src++;
-        ((char*)(zh->key_buf))[(zh->key_buf_used)++] = '\0';
-        ((char*)(zh->key_buf))[(zh->key_buf_used)++] = cmd;
-
-        if (lead & 60)
-            seqno += ((lead>>2) & 15)-1;
-        else
-        {
-            memcpy (&seqno, src, sizeof(seqno));
-            src += sizeof(seqno);
-        }
-        key.seqno = seqno;
-        key.sysno = sysno;
-        memcpy ((char*)zh->key_buf + zh->key_buf_used, &key, sizeof(key));
-        (zh->key_buf_used) += sizeof(key);
-        off = src - reckeys->buf;
+int zebra_compact (ZebraHandle zh)
+{
+    BFiles bfs;
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_compact");
+    zh->errCode=0;
+    if (!zh->res)
+    {
+        zh->errCode = 109;
+        return -1;
     }
-    assert (off == reckeys->buf_used);
+    bfs = bfs_create (res_get (zh->res, "register"), zh->path_reg);
+    inv_compact (bfs);
+    bfs_destroy (bfs);
+    return 0;
 }
 
-static void extract_index (ZebraHandle zh)
+int zebra_result (ZebraHandle zh, int *code, char **addinfo)
 {
-    extract_flushWriteKeys (zh);
-    zebra_index_merge (zh);
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_result");
+    *code = zh->errCode;
+    *addinfo = zh->errString;
+    return 0;
 }
 
-static int explain_extract (void *handle, Record rec, data1_node *n)
+int zebra_shadow_enable (ZebraHandle zh, int value)
 {
-    ZebraHandle zh = (ZebraHandle) handle;
-    struct recExtractCtrl extractCtrl;
-    int i;
-
-    if (zebraExplain_curDatabase (zh->service->zei,
-                                 rec->info[recInfo_databaseName]))
-    {
-       abort();
-        if (zebraExplain_newDatabase (zh->service->zei,
-                                     rec->info[recInfo_databaseName], 0))
-            abort ();
-    }
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_shadow_enable");
+    zh->errCode=0;
+    zh->shadow_enable = value;
+    return 0;
+}
 
-    zh->keys.buf_used = 0;
-    zh->keys.prevAttrUse = -1;
-    zh->keys.prevAttrSet = -1;
-    zh->keys.prevSeqNo = 0;
-    zh->sortKeys = 0;
+int zebra_record_encoding (ZebraHandle zh, const char *encoding)
+{
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_record_encoding");
+    zh->errCode=0;
+    xfree (zh->record_encoding);
+
+    /*
+     * Fixme!
+     * Something about charset aliases. Oleg???
+     */
+
+    if (zh->iconv_to_utf8 != 0)
+        yaz_iconv_close(zh->iconv_to_utf8);
+    if (zh->iconv_from_utf8 != 0)
+        yaz_iconv_close(zh->iconv_from_utf8);
+    
+    zh->record_encoding = xstrdup (encoding);
     
-    extractCtrl.init = extract_init;
-    extractCtrl.tokenAdd = extract_token_add;
-    extractCtrl.schemaAdd = extract_schema_add;
-    extractCtrl.dh = zh->service->dh;
-    for (i = 0; i<256; i++)
-       extractCtrl.seqno[i] = 0;
-    extractCtrl.zebra_maps = zh->service->zebra_maps;
-    extractCtrl.flagShowRecords = 0;
-    extractCtrl.handle = handle;
+    logf(LOG_DEBUG, "Reset record encoding: %s", encoding);
     
-    grs_extract_tree(&extractCtrl, n);
+    zh->iconv_to_utf8 =
+        yaz_iconv_open ("UTF-8", encoding);
+    if (zh->iconv_to_utf8 == 0)
+        yaz_log (LOG_WARN, "iconv: %s to UTF-8 unsupported", encoding);
+    zh->iconv_from_utf8 =
+        yaz_iconv_open (encoding, "UTF-8");
+    if (zh->iconv_to_utf8 == 0)
+        yaz_log (LOG_WARN, "iconv: UTF-8 to %s unsupported", encoding);
 
-    logf (LOG_LOG, "flush explain record, sysno=%d", rec->sysno);
+    return 0;
+}
 
-    if (rec->size[recInfo_delKeys])
-    {
-       struct recKeys delkeys;
-       struct sortKey *sortKeys = 0;
+int zebra_set_resource(ZebraHandle zh, const char *name, const char *value)
+{
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_set_resource %s:%s",name,value);
+    zh->errCode=0;
+    res_set(zh->res, name, value);
+    return 0;
+}
 
-       delkeys.buf_used = rec->size[recInfo_delKeys];
-       delkeys.buf = rec->info[recInfo_delKeys];
-       extract_flushSortKeys (zh, rec->sysno, 0, &sortKeys);
-       extract_flushRecordKeys (zh, rec->sysno, 0, &delkeys);
-    }
-    extract_flushRecordKeys (zh, rec->sysno, 1, &zh->keys);
-    extract_flushSortKeys (zh, rec->sysno, 1, &zh->sortKeys);
-
-    xfree (rec->info[recInfo_delKeys]);
-    rec->size[recInfo_delKeys] = zh->keys.buf_used;
-    rec->info[recInfo_delKeys] = zh->keys.buf;
-    zh->keys.buf = NULL;
-    zh->keys.buf_max = 0;
+const char *zebra_get_resource(ZebraHandle zh,
+                               const char *name, const char *defaultvalue)
+{
+    const char *v;
+    ASSERTZH;
+    v= res_get_def( zh->res, name, (char *)defaultvalue);
+    zh->errCode=0;
+    yaz_log(LOG_API,"zebra_get_resource %s:%s",name,v);
+    return v;
+}
+
+/* moved from zebra_api_ext.c by pop */
+/* FIXME: Should this really be public??? -Heikki */
+
+int zebra_trans_no (ZebraHandle zh)
+{
+    ASSERTZH;
+    yaz_log(LOG_API,"zebra_trans_no");
+    return zh->trans_no;
+}
+
+int zebra_get_shadow_enable (ZebraHandle zh)
+{
+    yaz_log(LOG_API,"zebra_get_shadow_enable");
+    return (zh->shadow_enable);
+}
+
+int zebra_set_shadow_enable (ZebraHandle zh, int value)
+{
+    yaz_log(LOG_API,"zebra_set_shadow_enable %d",value);
+    zh->shadow_enable = value;
     return 0;
 }
 
-static int extract_rec_in_mem (ZebraHandle zh, const char *recordType,
-                              const char *buf, size_t buf_size,
-                              const char *databaseName, int delete_flag,
-                              int test_mode, int *sysno,
-                              int store_keys, int store_data,
-                              const char *match_criteria)
-{
-    RecordAttr *recordAttr;
-    struct recExtractCtrl extractCtrl;
-    int i, r;
-    RecType recType;
-    char subType[1024];
-    void *clientData;
-    const char *fname = "<no file>";
-    Record rec;
-    long recordOffset = 0;
-    struct zebra_fetch_control fc;
-
-    fc.fd = -1;
-    fc.record_int_buf = buf;
-    fc.record_int_len = buf_size;
-    fc.record_int_pos = 0;
-    fc.offset_end = 0;
-    fc.record_offset = 0;
-
-    extractCtrl.offset = 0;
-    extractCtrl.readf = zebra_record_int_read;
-    extractCtrl.seekf = zebra_record_int_seek;
-    extractCtrl.tellf = zebra_record_int_tell;
-    extractCtrl.endf = zebra_record_int_end;
-    extractCtrl.fh = &fc;
+/* almost the same as zebra_records_retrieve ... but how did it work? 
+   I mean for multiple records ??? CHECK ??? */
+void api_records_retrieve (ZebraHandle zh, ODR stream,
+                          const char *setname, Z_RecordComposition *comp,
+                          oid_value input_format, int num_recs,
+                          ZebraRetrievalRecord *recs)
+{
+    ZebraPosSet poset;
+    int i, *pos_array;
+    yaz_log(LOG_API,"api_records_retrieve s=%s n=%d",setname,num_recs);
 
-    /* announce database */
-    if (zebraExplain_curDatabase (zh->service->zei, databaseName))
-    {
-        if (zebraExplain_newDatabase (zh->service->zei, databaseName, 0))
-           return 0;
-    }
-    if (!(recType =
-         recType_byName (zh->service->recTypes, recordType, subType,
-                         &clientData)))
+    if (!zh->res)
     {
-        logf (LOG_WARN, "No such record type: %s", recordType);
-        return 0;
+        zh->errCode = 30;
+        zh->errString = odr_strdup (stream, setname);
+        return;
     }
+    
+    zh->errCode = 0; 
 
-    zh->keys.buf_used = 0;
-    zh->keys.prevAttrUse = -1;
-    zh->keys.prevAttrSet = -1;
-    zh->keys.prevSeqNo = 0;
-    zh->sortKeys = 0;
-
-    extractCtrl.subType = subType;
-    extractCtrl.init = extract_init;
-    extractCtrl.tokenAdd = extract_token_add;
-    extractCtrl.schemaAdd = extract_schema_add;
-    extractCtrl.dh = zh->service->dh;
-    extractCtrl.handle = zh;
-    extractCtrl.zebra_maps = zh->service->zebra_maps;
-    extractCtrl.flagShowRecords = 0;
-    for (i = 0; i<256; i++)
+    if (zebra_begin_read (zh))
+       return;
+
+    pos_array = (int *) xmalloc (num_recs * sizeof(*pos_array));
+    for (i = 0; i<num_recs; i++)
+       pos_array[i] = recs[i].position;
+    poset = zebraPosSetCreate (zh, setname, num_recs, pos_array);
+    if (!poset)
     {
-       if (zebra_maps_is_positioned(zh->service->zebra_maps, i))
-           extractCtrl.seqno[i] = 1;
-       else
-           extractCtrl.seqno[i] = 0;
+        logf (LOG_DEBUG, "zebraPosSetCreate error");
+        zh->errCode = 30;
+        zh->errString = nmem_strdup (stream->mem, setname);
     }
-
-    r = (*recType->extract)(clientData, &extractCtrl);
-
-    if (r == RECCTRL_EXTRACT_EOF)
-       return 0;
-    else if (r == RECCTRL_EXTRACT_ERROR)
+    else
     {
-       /* error occured during extraction ... */
-#if 1
-       yaz_log (LOG_WARN, "extract error");
-#else
-       if (rGroup->flagRw &&
-           records_processed < rGroup->fileVerboseLimit)
+       for (i = 0; i<num_recs; i++)
        {
-           logf (LOG_WARN, "fail %s %s %ld", rGroup->recordType,
-                 fname, (long) recordOffset);
+           if (poset[i].term)
+           {
+               recs[i].errCode = 0;
+               recs[i].format = VAL_SUTRS;
+               recs[i].len = strlen(poset[i].term);
+               recs[i].buf = poset[i].term;
+               recs[i].base = poset[i].db;
+               recs[i].sysno = 0;
+           
+           }
+           else if (poset[i].sysno)
+           {
+             /* changed here ??? CHECK ??? */
+             char *b;
+               recs[i].errCode =
+                   zebra_record_fetch (zh, poset[i].sysno, poset[i].score,
+                                       stream, input_format, comp,
+                                       &recs[i].format, 
+                                       &b,
+                                       &recs[i].len,
+                                       &recs[i].base);
+               recs[i].buf = (char *) odr_malloc(stream,recs[i].len);
+               memcpy(recs[i].buf, b, recs[i].len);
+               recs[i].errString = 0; /* Hmmm !!! we should get this */ 
+               recs[i].sysno = poset[i].sysno;
+               recs[i].score = poset[i].score;
+           }
+           else
+           {
+               char num_str[20];
+
+               sprintf (num_str, "%d", pos_array[i]);  
+               zh->errCode = 13;
+                zh->errString = odr_strdup (stream, num_str);
+                break;
+           }
+
        }
-#endif
-       return 0;
+       zebraPosSetDestroy (zh, poset, num_recs);
     }
-    if (zh->keys.buf_used == 0)
-    {
-       /* the extraction process returned no information - the record
-          is probably empty - unless flagShowRecords is in use */
-       if (test_mode)
-           return 1;
-       logf (LOG_WARN, "No keys generated for record");
-       logf (LOG_WARN, " The file is probably empty");
+    zebra_end_read (zh);
+    xfree (pos_array);
+}
+
+
+/* ---------------------------------------------------------------------------
+  Record insert(=update), delete 
+
+  If sysno is provided, then it's used to identify the record.
+  If not, and match_criteria is provided, then sysno is guessed
+  If not, and a record is provided, then sysno is got from there
+NOTE: Now returns 0 at success and updates sysno, which is an int*
+  20-jun-2003 Heikki
+*/
+
+int zebra_add_record(ZebraHandle zh,
+                    const char *buf, int buf_size)
+{
+    SYSNO sysno = 0;
+    return zebra_update_record(zh, 0, &sysno, 0, 0, buf, buf_size, 0);
+}
+
+int zebra_insert_record (ZebraHandle zh, 
+                        const char *recordType,
+                        SYSNO *sysno, const char *match, const char *fname,
+                        const char *buf, int buf_size, int force_update)
+{
+    int res;
+    yaz_log(LOG_API,"zebra_insert_record sysno=" ZINT_FORMAT, *sysno);
+
+    if (buf_size < 1) buf_size = strlen(buf);
+
+    if (zebra_begin_trans(zh, 1))
        return 1;
-    }
-    /* match criteria */
+    res = buffer_extract_record (zh, buf, buf_size, 
+                                0, /* delete_flag  */
+                                0, /* test_mode */
+                                recordType,
+                                sysno,   
+                                match, fname,
+                                0, 
+                                0); /* allow_update */
+    zebra_end_trans(zh); 
+    return res; 
+}
 
-    if (! *sysno)
-    {
-        /* new record */
-        if (delete_flag)
-        {
-           logf (LOG_LOG, "delete %s %s %ld", recordType,
-                 fname, (long) recordOffset);
-            logf (LOG_WARN, "cannot delete record above (seems new)");
-            return 1;
-        }
-       logf (LOG_LOG, "add %s %s %ld", recordType, fname,
-             (long) recordOffset);
-        rec = rec_new (zh->service->records);
+int zebra_update_record (ZebraHandle zh, 
+                        const char *recordType,
+                        SYSNO* sysno, const char *match, const char *fname,
+                        const char *buf, int buf_size,
+                        int force_update)
+{
+    int res;
 
-        *sysno = rec->sysno;
+    yaz_log(LOG_API,"zebra_update_record sysno=" ZINT_FORMAT, *sysno);
 
-       recordAttr = rec_init_attr (zh->service->zei, rec);
+    if (buf_size < 1) buf_size = strlen(buf);
 
-#if 0
-        if (matchStr)
-        {
-            dict_insert (matchDict, matchStr, sizeof(*sysno), sysno);
-        }
-#endif
-        extract_flushRecordKeys (zh, *sysno, 1, &zh->keys);
-       extract_flushSortKeys (zh, *sysno, 1, &zh->sortKeys);
-    }
-    else
-    {
-        /* record already exists */
-        struct recKeys delkeys;
+    if (zebra_begin_trans(zh, 1))
+       return 1;
+    res = buffer_extract_record (zh, buf, buf_size, 
+                                0, /* delete_flag */
+                                0, /* test_mode */
+                                recordType,
+                                sysno,   
+                                match, fname,
+                                force_update, 
+                                1); /* allow_update */
+    zebra_end_trans(zh); 
+    return res; 
+}
 
-        rec = rec_get (zh->service->records, *sysno);
-        assert (rec);
-       
-       recordAttr = rec_init_attr (zh->service->zei, rec);
+int zebra_delete_record (ZebraHandle zh, 
+                        const char *recordType,
+                        SYSNO *sysno, const char *match, const char *fname,
+                        const char *buf, int buf_size,
+                        int force_update) 
+{
+    int res;
+    yaz_log(LOG_API,"zebra_delete_record sysno=" ZINT_FORMAT, *sysno);
 
-       if (recordAttr->runNumber ==
-           zebraExplain_runNumberIncrement (zh->service->zei, 0))
-       {
-           logf (LOG_LOG, "skipped %s %s %ld", recordType,
-                 fname, (long) recordOffset);
-           rec_rm (&rec);
-           return 1;
-       }
-        delkeys.buf_used = rec->size[recInfo_delKeys];
-       delkeys.buf = rec->info[recInfo_delKeys];
-       extract_flushSortKeys (zh, *sysno, 0, &zh->sortKeys);
-        extract_flushRecordKeys (zh, *sysno, 0, &delkeys);
-        if (delete_flag)
-        {
-            /* record going to be deleted */
-            if (!delkeys.buf_used)
-            {
-                logf (LOG_LOG, "delete %s %s %ld", recordType,
-                      fname, (long) recordOffset);
-                logf (LOG_WARN, "cannot delete file above, storeKeys false");
-            }
-            else
-            {
-               logf (LOG_LOG, "delete %s %s %ld", recordType,
-                     fname, (long) recordOffset);
-#if 0
-                if (matchStr)
-                    dict_delete (matchDict, matchStr);
-#endif
-                rec_del (zh->service->records, &rec);
-            }
-           rec_rm (&rec);
-            return 1;
-        }
-        else
-        {
-            /* record going to be updated */
-            if (!delkeys.buf_used)
-            {
-                logf (LOG_LOG, "update %s %s %ld", recordType,
-                      fname, (long) recordOffset);
-                logf (LOG_WARN, "cannot update file above, storeKeys false");
-            }
-            else
-            {
-               logf (LOG_LOG, "update %s %s %ld", recordType,
-                     fname, (long) recordOffset);
-                extract_flushRecordKeys (zh, *sysno, 1, &zh->keys);
-            }
-        }
-    }
-    /* update file type */
-    xfree (rec->info[recInfo_fileType]);
-    rec->info[recInfo_fileType] =
-        rec_strdup (recordType, &rec->size[recInfo_fileType]);
-
-    /* update filename */
-    xfree (rec->info[recInfo_filename]);
-    rec->info[recInfo_filename] =
-        rec_strdup (fname, &rec->size[recInfo_filename]);
-
-    /* update delete keys */
-    xfree (rec->info[recInfo_delKeys]);
-    if (zh->keys.buf_used > 0 && store_keys == 1)
-    {
-        rec->size[recInfo_delKeys] = zh->keys.buf_used;
-        rec->info[recInfo_delKeys] = zh->keys.buf;
-        zh->keys.buf = NULL;
-        zh->keys.buf_max = 0;
-    }
-    else
-    {
-        rec->info[recInfo_delKeys] = NULL;
-        rec->size[recInfo_delKeys] = 0;
-    }
+    if (buf_size < 1) buf_size = strlen(buf);
 
-    /* save file size of original record */
-    zebraExplain_recordBytesIncrement (zh->service->zei,
-                                      - recordAttr->recordSize);
-#if 0
-    recordAttr->recordSize = fi->file_moffset - recordOffset;
-    if (!recordAttr->recordSize)
-       recordAttr->recordSize = fi->file_max - recordOffset;
-#else
-    recordAttr->recordSize = buf_size;
-#endif
-    zebraExplain_recordBytesIncrement (zh->service->zei,
-                                      recordAttr->recordSize);
+    if (zebra_begin_trans(zh, 1))
+       return 1;
+    res = buffer_extract_record (zh, buf, buf_size,
+                                1, /* delete_flag */
+                                0, /* test_mode */
+                                recordType,
+                                sysno,
+                                match,fname,
+                                force_update,
+                                1); /* allow_update */
+    zebra_end_trans(zh);
+    return res;   
+}
 
-    /* set run-number for this record */
-    recordAttr->runNumber =
-       zebraExplain_runNumberIncrement (zh->service->zei, 0);
+/* ---------------------------------------------------------------------------
+  Searching 
+*/
 
-    /* update store data */
-    xfree (rec->info[recInfo_storeData]);
-    if (store_data == 1)
-    {
-        rec->size[recInfo_storeData] = recordAttr->recordSize;
-        rec->info[recInfo_storeData] = (char *)
-           xmalloc (recordAttr->recordSize);
-#if 1
-        memcpy (rec->info[recInfo_storeData], buf, recordAttr->recordSize);
-#else
-        if (lseek (fi->fd, recordOffset, SEEK_SET) < 0)
-        {
-            logf (LOG_ERRNO|LOG_FATAL, "seek to %ld in %s",
-                  (long) recordOffset, fname);
-            exit (1);
-        }
-        if (read (fi->fd, rec->info[recInfo_storeData], recordAttr->recordSize)
-           < recordAttr->recordSize)
-        {
-            logf (LOG_ERRNO|LOG_FATAL, "read %d bytes of %s",
-                  recordAttr->recordSize, fname);
-            exit (1);
-        }
-#endif
-    }
+int zebra_search_PQF (ZebraHandle zh, const char *pqf_query,
+                     const char *setname, int *numhits)
+{
+    int hits = 0;
+    int res=-1;
+    Z_RPNQuery *query;
+    ODR odr = odr_createmem(ODR_ENCODE);
+
+    yaz_log(LOG_API,"zebra_search_PQF s=%s q=%s",setname, pqf_query);
+    
+    query = p_query_rpn (odr, PROTO_Z3950, pqf_query);
+    
+    if (!query)
+        yaz_log (LOG_WARN, "bad query %s\n", pqf_query);
     else
+        res=zebra_search_RPN (zh, odr, query, setname, &hits);
+    
+    odr_destroy(odr);
+
+    yaz_log(LOG_API,"Hits: %d",hits);
+
+    if (numhits)
+       *numhits=hits;
+
+    return res;
+}
+
+/* ---------------------------------------------------------------------------
+  Sort - a simplified interface, with optional read locks.
+*/
+int zebra_sort_by_specstr (ZebraHandle zh, 
+                          ODR stream,
+                          const char *sort_spec,
+                          const char *output_setname,
+                          const char **input_setnames) 
+{
+    int num_input_setnames = 0;
+    int sort_status = 0;
+    Z_SortKeySpecList *sort_sequence = yaz_sort_spec (stream, sort_spec);
+    yaz_log(LOG_API,"sort (FIXME) ");
+    if (!sort_sequence)
     {
-        rec->info[recInfo_storeData] = NULL;
-        rec->size[recInfo_storeData] = 0;
+        logf(LOG_WARN,"invalid sort specs '%s'", sort_spec);
+        zh->errCode = 207;
+       return -1;
     }
-    /* update database name */
-    xfree (rec->info[recInfo_databaseName]);
-    rec->info[recInfo_databaseName] =
-        rec_strdup (databaseName, &rec->size[recInfo_databaseName]); 
-
-    /* update offset */
-    recordAttr->recordOffset = recordOffset;
     
-    /* commit this record */
-    rec_put (zh->service->records, &rec);
+    /* we can do this, since the perl typemap code for char** will 
+       put a NULL at the end of list */
+    while (input_setnames[num_input_setnames]) num_input_setnames++;
 
-    return 0;
+    if (zebra_begin_read (zh))
+        return -1;
+    
+    resultSetSort (zh, stream->mem, num_input_setnames, input_setnames,
+                   output_setname, sort_sequence, &sort_status);
+    
+    zebra_end_read(zh);
+    return sort_status;
 }
+