X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=index%2Fzinfo.c;h=67060efa6b5bfd103f4ef693fe3df5e2b0da63fc;hb=6a395dd488e0f34f54ea44bafcde9c959292c252;hp=0565a0069e9dd5117bb34d17cc72213ec5dbe4ed;hpb=77686142af94172d1887190ebd47aeb53f704057;p=idzebra-moved-to-github.git

diff --git a/index/zinfo.c b/index/zinfo.c
index 0565a00..67060ef 100644
--- a/index/zinfo.c
+++ b/index/zinfo.c
@@ -1,86 +1,24 @@
-/*
- * Copyright (C) 1994-2000, Index Data
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: zinfo.c,v $
- * Revision 1.22  2001-10-15 19:53:43  adam
- * POSIX thread updates. First work on term sets.
- *
- * Revision 1.21  2000/12/05 10:01:44  adam
- * Fixed bug regarding user-defined attribute sets.
- *
- * Revision 1.20  2000/11/29 14:24:01  adam
- * Script configure uses yaz pthreads options. Added locking for
- * zebra_register_{lock,unlock}.
- *
- * Revision 1.19  2000/07/07 12:49:20  adam
- * Optimized resultSetInsert{Rank,Sort}.
- *
- * Revision 1.18  2000/03/20 19:08:36  adam
- * Added remote record import using Z39.50 extended services and Segment
- * Requests.
- *
- * Revision 1.17  1999/07/14 10:53:51  adam
- * Updated various routines to handle missing explain schema.
- *
- * Revision 1.16  1999/05/26 07:49:13  adam
- * C++ compilation.
- *
- * Revision 1.15  1999/01/25 13:47:54  adam
- * Fixed bug.
- *
- * Revision 1.14  1998/11/04 16:31:32  adam
- * Fixed bug regarding recordBytes in databaseInfo.
- *
- * Revision 1.13  1998/11/03 10:17:09  adam
- * Fixed bug regarding creation of some data1 nodes for Explain records.
- *
- * Revision 1.12  1998/10/13 20:37:11  adam
- * Changed the way attribute sets are saved in Explain database to
- * reflect "dynamic" OIDs.
- *
- * Revision 1.11  1998/06/09 12:16:48  adam
- * Implemented auto-generation of CategoryList records.
- *
- * Revision 1.10  1998/06/08 14:43:15  adam
- * Added suport for EXPLAIN Proxy servers - added settings databasePath
- * and explainDatabase to facilitate this. Increased maximum number
- * of databases and attributes in one register.
- *
- * Revision 1.9  1998/06/02 12:10:27  adam
- * Fixed bug related to attributeDetails.
- *
- * Revision 1.8  1998/05/20 10:12:20  adam
- * Implemented automatic EXPLAIN database maintenance.
- * Modified Zebra to work with ASN.1 compiled version of YAZ.
- *
- * Revision 1.7  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.
- *
- * Revision 1.6  1998/02/17 10:29:27  adam
- * Moved towards 'automatic' EXPLAIN database.
- *
- * Revision 1.5  1997/10/27 14:33:05  adam
- * Moved towards generic character mapping depending on "structure"
- * field in abstract syntax file. Fixed a few memory leaks. Fixed
- * bug with negative integers when doing searches with relational
- * operators.
- *
- * Revision 1.4  1997/09/25 14:57:08  adam
- * Added string.h.
- *
- * Revision 1.3  1996/05/22 08:21:59  adam
- * Added public ZebDatabaseInfo structure.
- *
- * Revision 1.2  1996/05/14 06:16:41  adam
- * Compact use/set bytes used in search service.
- *
- * Revision 1.1  1996/05/13 14:23:07  adam
- * Work on compaction of set/use bytes in dictionary.
- *
- */
+/* $Id: zinfo.c,v 1.37 2003-06-30 19:37:12 adam Exp $
+   Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003
+   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 <stdlib.h>
 #include <assert.h>
@@ -154,6 +92,7 @@ struct zebraExplainInfo {
     int  ordinalSU;
     int  runNumber;
     int  dirty;
+    int write_flag;
     Records records;
     data1_handle dh;
     Res res;
@@ -177,134 +116,6 @@ static data1_node *read_sgml_rec (data1_handle dh, NMEM nmem, Record rec)
     return data1_read_sgml (dh, nmem, rec->info[recInfo_storeData]);
 }
 
-static data1_node *data1_search_tag (data1_handle dh, data1_node *n,
-				    const char *tag)
-{
-    logf (LOG_DEBUG, "data1_search_tag %s", tag);
-    for (; n; n = n->next)
-	if (n->which == DATA1N_tag && n->u.tag.tag &&
-	    !yaz_matchstr (tag, n->u.tag.tag))
-	{
-	    logf (LOG_DEBUG, " found");
-	    return n;
-	}
-    logf (LOG_DEBUG, " not found");
-    return 0;
-}
-
-static data1_node *data1_add_tag (data1_handle dh, data1_node *at,
-				  const char *tag, NMEM nmem)
-{
-    data1_node *partag = get_parent_tag(dh, at);
-    data1_node *res = data1_mk_node_type (dh, nmem, DATA1N_tag);
-    data1_element *e = NULL;
-
-    res->parent = at;
-    res->u.tag.tag = data1_insert_string (dh, res, nmem, tag);
-   
-    if (partag)
-	e = partag->u.tag.element;
-    res->u.tag.element =
-	data1_getelementbytagname (dh, at->root->u.root.absyn,
-				   e, res->u.tag.tag);
-    res->root = at->root;
-    if (!at->child)
-	at->child = res;
-    else
-    {
-	assert (at->last_child);
-	at->last_child->next = res;
-    }
-    at->last_child = res;
-    return res;
-}
-
-static data1_node *data1_make_tag (data1_handle dh, data1_node *at,
-				   const char *tag, NMEM nmem)
-{
-    data1_node *node = data1_search_tag (dh, at->child, tag);
-    if (!node)
-	node = data1_add_tag (dh, at, tag, nmem);
-    else
-	node->child = node->last_child = NULL;
-    return node;
-}
-
-static data1_node *data1_add_tagdata_int (data1_handle dh, data1_node *at,
-					  const char *tag, int num,
-					  NMEM nmem)
-{
-    data1_node *node_data;
-    
-    node_data = data1_add_taggeddata (dh, at->root, at, tag, nmem);
-    if (!node_data)
-	return 0;
-    node_data->u.data.what = DATA1I_num;
-    node_data->u.data.data = node_data->lbuf;
-    sprintf (node_data->u.data.data, "%d", num);
-    node_data->u.data.len = strlen (node_data->u.data.data);
-    return node_data;
-}
-
-static data1_node *data1_add_tagdata_oid (data1_handle dh, data1_node *at,
-					   const char *tag, Odr_oid *oid,
-					   NMEM nmem)
-{
-    data1_node *node_data;
-    char str[128], *p = str;
-    Odr_oid *ii;
-    
-    node_data = data1_add_taggeddata (dh, at->root, at, tag, nmem);
-    if (!node_data)
-	return 0;
-    
-    for (ii = oid; *ii >= 0; ii++)
-    {
-	if (ii != oid)
-	    *p++ = '.';
-	sprintf (p, "%d", *ii);
-	p += strlen (p);
-    }
-    node_data->u.data.what = DATA1I_oid;
-    node_data->u.data.len = strlen (str);
-    node_data->u.data.data = data1_insert_string (dh, node_data, nmem, str);
-    return node_data;
-}
-
-
-static data1_node *data1_add_tagdata_text (data1_handle dh, data1_node *at,
-					   const char *tag, const char *str,
-					   NMEM nmem)
-{
-    data1_node *node_data;
-    
-    node_data = data1_add_taggeddata (dh, at->root, at, tag, nmem);
-    if (!node_data)
-	return 0;
-    node_data->u.data.what = DATA1I_text;
-    node_data->u.data.len = strlen (str);
-    node_data->u.data.data = data1_insert_string (dh, node_data, nmem, str);
-    return node_data;
-}
-
-static data1_node *data1_make_tagdata_text (data1_handle dh, data1_node *at,
-					    const char *tag, const char *str,
-					    NMEM nmem)
-{
-    data1_node *node = data1_search_tag (dh, at->child, tag);
-    if (!node)
-        return data1_add_tagdata_text (dh, at, tag, str, nmem);
-    else
-    {
-	data1_node *node_data = node->child;
-	node_data->u.data.what = DATA1I_text;
-	node_data->u.data.len = strlen (str);
-	node_data->u.data.data = data1_insert_string (dh, node_data,
-						      nmem, str);
-	return node_data;
-    }
-}
-
 static void zebraExplain_writeDatabase (ZebraExplainInfo zei,
                                         struct zebDatabaseInfoB *zdi,
 					int key_flush);
@@ -343,10 +154,12 @@ static Record createRecord (Records records, int *sysno)
     return rec;
 }
 
-void zebraExplain_flush (ZebraExplainInfo zei, int writeFlag, void *handle)
+void zebraExplain_flush (ZebraExplainInfo zei, void *handle)
 {
+    if (!zei)
+        return;
     zei->updateHandle = handle;
-    if (writeFlag)
+    if (zei->write_flag)
     {
 	struct zebDatabaseInfoB *zdi;
 	zebAccessObject o;
@@ -382,14 +195,14 @@ void zebraExplain_flush (ZebraExplainInfo zei, int writeFlag, void *handle)
     }
 }
 
-void zebraExplain_close (ZebraExplainInfo zei, int writeFlag)
+void zebraExplain_close (ZebraExplainInfo zei)
 {
 #if ZINFO_DEBUG
-    logf (LOG_LOG, "zebraExplain_close wr=%d", writeFlag);
+    yaz_log (LOG_LOG, "zebraExplain_close");
 #endif
     if (!zei)
 	return;
-    zebraExplain_flush (zei, writeFlag, zei->updateHandle);
+    zebraExplain_flush (zei, zei->updateHandle);
     nmem_destroy (zei->nmem);
 }
 
@@ -458,6 +271,52 @@ void zebraExplain_mergeAccessInfo (ZebraExplainInfo zei, data1_node *n,
     }
 }
 
+/* Explain structure
+    root record
+      of type targetInfo
+      and has sysno = 1
+
+    databaseList (list of databases)
+*/
+/*
+Example root:
+explain:
+  targetInfo: TargetInfo
+    name: Zebra
+    namedResultSets: 1
+    multipleDbSearch: 1
+    nicknames:
+      name: Zebra
+    commonInfo:
+      dateAdded: 20030630190601
+      dateChanged: 20030630190601
+      languageCode: EN
+    accessinfo:
+      unitSystems:
+        string: ISO
+      attributeSetIds:
+        oid: 1.2.840.10003.3.2
+        oid: 1.2.840.10003.3.5
+        oid: 1.2.840.10003.3.1
+      schemas:
+        oid: 1.2.840.10003.13.1000.81.2
+        oid: 1.2.840.10003.13.2
+    zebraInfo:
+      version: 1.3.12
+      databaseList:
+        database:
+          name: Default
+          id: 50
+          attributeDetailsId: 51
+        database:
+          name: IR-Explain-1
+          id: 52
+          attributeDetailsId: 53
+      ordinalSU: 38
+      runNumber: 1
+nextResultSetPosition = 2
+*/
+
 ZebraExplainInfo zebraExplain_open (
     Records records, data1_handle dh,
     Res res,
@@ -476,6 +335,7 @@ ZebraExplainInfo zebraExplain_open (
     logf (LOG_LOG, "zebraExplain_open wr=%d", writeFlag);
 #endif
     zei = (ZebraExplainInfo) nmem_malloc (nmem, sizeof(*zei));
+    zei->write_flag = writeFlag;
     zei->updateHandle = updateHandle;
     zei->updateFunc = updateFunc;
     zei->dirty = 0;
@@ -491,12 +351,17 @@ ZebraExplainInfo zebraExplain_open (
     zei->categoryList->dirty = 0;
     zei->categoryList->data1_categoryList = NULL;
 
-    time (&our_time);
-    tm = localtime (&our_time);
-    sprintf (zei->date, "%04d%02d%02d%02d%02d%02d",
-	     tm->tm_year+1900, tm->tm_mon+1,  tm->tm_mday,
-	     tm->tm_hour, tm->tm_min, tm->tm_sec);
-
+    if ( atoi (res_get_def (res, "notimestamps", "0") )== 0)
+    {
+        time (&our_time);
+        tm = localtime (&our_time);
+        sprintf (zei->date, "%04d%02d%02d%02d%02d%02d",
+	         tm->tm_year+1900, tm->tm_mon+1,  tm->tm_mday,
+	         tm->tm_hour, tm->tm_min, tm->tm_sec);
+    } else {
+        sprintf (zei->date, "%04d%02d%02d%02d%02d%02d",
+	         0, 0, 0,  0, 0, 0);
+    }
     zdip = &zei->databaseInfo;
     trec = rec_get (records, 1);      /* get "root" record */
 
@@ -509,7 +374,11 @@ ZebraExplainInfo zebraExplain_open (
 	data1_node *node_tgtinfo, *node_zebra, *node_list, *np;
 
 	zei->data1_target = read_sgml_rec (zei->dh, zei->nmem, trec);
+#if 0
 	if (!zei->data1_target || !zei->data1_target->u.root.absyn)
+#else
+	if (!zei->data1_target)
+#endif
 	{
 	    logf (LOG_FATAL, "Explain schema missing. Check profilePath");
 	    nmem_destroy (zei->nmem);
@@ -518,8 +387,8 @@ ZebraExplainInfo zebraExplain_open (
 #if ZINFO_DEBUG
 	data1_pr_tree (zei->dh, zei->data1_target, stderr);
 #endif
-	node_tgtinfo = data1_search_tag (zei->dh, zei->data1_target->child,
-					 "targetInfo");
+	node_tgtinfo = data1_search_tag (zei->dh, zei->data1_target,
+					 "/targetInfo");
 	zebraExplain_mergeAccessInfo (zei, node_tgtinfo,
 				      &zei->accessInfo);
 
@@ -593,6 +462,7 @@ ZebraExplainInfo zebraExplain_open (
 	    np = np->child;
 	    assert (np && np->which == DATA1N_data);
 	    zei->runNumber = atoi_n (np->u.data.data, np->u.data.len);
+            yaz_log (LOG_DEBUG, "read runnumber = %d", zei->runNumber);
 	    *zdip = NULL;
 	}
 	rec_rm (&trec);
@@ -615,14 +485,14 @@ ZebraExplainInfo zebraExplain_open (
 				 "<multipleDBSearch>1</>\n"
 				 "<nicknames><name>Zebra</></>\n"
 				 "</></>\n" );
-	    if (!zei->data1_target || !zei->data1_target->u.root.absyn)
+	    if (!zei->data1_target)
 	    {
 		logf (LOG_FATAL, "Explain schema missing. Check profilePath");
 		nmem_destroy (zei->nmem);
 		return 0;
 	    }
-	    node_tgtinfo = data1_search_tag (zei->dh, zei->data1_target->child,
-					    "targetInfo");
+	    node_tgtinfo = data1_search_tag (zei->dh, zei->data1_target,
+                                             "/targetInfo");
 	    assert (node_tgtinfo);
 
 	    zebraExplain_initCommonInfo (zei, node_tgtinfo);
@@ -659,10 +529,8 @@ ZebraExplainInfo zebraExplain_open (
 	
 	    if (zcl->data1_categoryList)
 	    {
-		assert (zcl->data1_categoryList->child);
-		node_cl = data1_search_tag (zei->dh,
-					    zcl->data1_categoryList->child,
-					    "categoryList");
+		node_cl = data1_search_tag (zei->dh, zcl->data1_categoryList,
+					    "/categoryList");
 		assert (node_cl);
 		zebraExplain_initCommonInfo (zei, node_cl);
 	    }
@@ -683,8 +551,8 @@ static void zebraExplain_readAttributeDetails (ZebraExplainInfo zei,
 
     zad->data1_tree = read_sgml_rec (zei->dh, zei->nmem, rec);
 
-    node_adinfo = data1_search_tag (zei->dh, zad->data1_tree->child,
-				    "attributeDetails");
+    node_adinfo = data1_search_tag (zei->dh, zad->data1_tree,
+				    "/attributeDetails");
     node_zebra = data1_search_tag (zei->dh, node_adinfo->child,
 				 "zebraInfo");
     node_list = data1_search_tag (zei->dh, node_zebra->child,
@@ -748,8 +616,9 @@ static void zebraExplain_readDatabase (ZebraExplainInfo zei,
 
     zdi->data1_database = read_sgml_rec (zei->dh, zei->nmem, rec);
     
-    node_dbinfo = data1_search_tag (zei->dh, zdi->data1_database->child,
-				   "databaseInfo");
+    node_dbinfo = data1_search_tag (zei->dh, zdi->data1_database,
+                                    "/databaseInfo");
+    assert (node_dbinfo);
     zebraExplain_mergeAccessInfo (zei, node_dbinfo, &zdi->accessInfo);
 
     node_zebra = data1_search_tag (zei->dh, node_dbinfo->child,
@@ -773,17 +642,62 @@ static void zebraExplain_readDatabase (ZebraExplainInfo zei,
     rec_rm (&rec);
 }
 
+int zebraExplain_removeDatabase(ZebraExplainInfo zei, void *update_handle)
+{
+    struct zebDatabaseInfoB **zdip = &zei->databaseInfo;
+
+    while (*zdip)
+    {
+	if (*zdip == zei->curDatabaseInfo)
+	{
+	    struct zebDatabaseInfoB *zdi = *zdip;
+	    Record rec;
+
+	    zei->dirty = 1;
+	    zei->updateHandle = update_handle;
+
+	    if (zdi->attributeDetails)
+	    {
+		/* remove attribute details keys and delete it */
+		zebAttributeDetails zad = zdi->attributeDetails;
+		
+		rec = rec_get(zei->records, zad->sysno);
+		(*zei->updateFunc)(zei->updateHandle, rec, 0);
+		rec_rm(&rec);
+	    }
+	    /* remove database record keys and delete it */
+	    rec = rec_get (zei->records, zdi->sysno);
+	    (*zei->updateFunc)(zei->updateHandle, rec, 0);
+	    rec_rm(&rec);
+
+	    /* remove from list */
+	    *zdip = zdi->next;
+
+	    /* current database is IR-Explain-1 */
+	    return 0;
+	}
+	zdip = &(*zdip)->next;
+    }
+    return -1;
+}
+
 int zebraExplain_curDatabase (ZebraExplainInfo zei, const char *database)
 {
     struct zebDatabaseInfoB *zdi;
+    const char *database_n = strrchr (database, '/');
+
+    if (database_n)
+        database_n++;
+    else
+        database_n = database;
     
     assert (zei);
     if (zei->curDatabaseInfo &&
-        !strcmp (zei->curDatabaseInfo->databaseName, database))
+        !STRCASECMP (zei->curDatabaseInfo->databaseName, database))
         return 0;
     for (zdi = zei->databaseInfo; zdi; zdi=zdi->next)
     {
-        if (!strcmp (zdi->databaseName, database))
+        if (!STRCASECMP (zdi->databaseName, database_n))
             break;
     }
     if (!zdi)
@@ -811,25 +725,25 @@ int zebraExplain_curDatabase (ZebraExplainInfo zei, const char *database)
 
 static void zebraExplain_initCommonInfo (ZebraExplainInfo zei, data1_node *n)
 {
-    data1_node *c = data1_add_tag (zei->dh, n, "commonInfo", zei->nmem);
-
-    data1_add_tagdata_text (zei->dh, c, "dateAdded", zei->date, zei->nmem);
-    data1_add_tagdata_text (zei->dh, c, "dateChanged", zei->date, zei->nmem);
-    data1_add_tagdata_text (zei->dh, c, "languageCode", "EN", zei->nmem);
+    data1_node *c = data1_mk_tag (zei->dh, zei->nmem, "commonInfo", 0, n);
+    data1_mk_tag_data_text (zei->dh, c, "dateAdded", zei->date, zei->nmem);
+    data1_mk_tag_data_text (zei->dh, c, "dateChanged", zei->date, zei->nmem);
+    data1_mk_tag_data_text (zei->dh, c, "languageCode", "EN", zei->nmem);
 }
 
 static void zebraExplain_updateCommonInfo (ZebraExplainInfo zei, data1_node *n)
 {
     data1_node *c = data1_search_tag (zei->dh, n->child, "commonInfo");
     assert (c);
-    data1_make_tagdata_text (zei->dh, c, "dateChanged", zei->date, zei->nmem);
+    data1_mk_tag_data_text_uni (zei->dh, c, "dateChanged", zei->date,
+                                zei->nmem);
 }
 
 static void zebraExplain_initAccessInfo (ZebraExplainInfo zei, data1_node *n)
 {
-    data1_node *c = data1_add_tag (zei->dh, n, "accessInfo", zei->nmem);
-    data1_node *d = data1_add_tag (zei->dh, c, "unitSystems", zei->nmem);
-    data1_add_tagdata_text (zei->dh, d, "string", "ISO", zei->nmem);
+    data1_node *c = data1_mk_tag (zei->dh, zei->nmem, "accessInfo", 0, n);
+    data1_node *d = data1_mk_tag (zei->dh, zei->nmem, "unitSystems", 0, c);
+    data1_mk_tag_data_text (zei->dh, d, "string", "ISO", zei->nmem);
 }
 
 static void zebraExplain_updateAccessInfo (ZebraExplainInfo zei, data1_node *n,
@@ -839,19 +753,24 @@ static void zebraExplain_updateAccessInfo (ZebraExplainInfo zei, data1_node *n,
     data1_node *d;
     zebAccessObject p;
     
-    assert (c);
+    if (!c)
+    {
+        data1_pr_tree (zei->dh, n, stdout);
+        exit (0);
+        assert (c);
+    }
 
     if ((p = accessInfo->attributeSetIds))
     {
-	d = data1_make_tag (zei->dh, c, "attributeSetIds", zei->nmem);
+	d = data1_mk_tag_uni (zei->dh, zei->nmem, "attributeSetIds", c);
 	for (; p; p = p->next)
-	    data1_add_tagdata_oid (zei->dh, d, "oid", p->oid, zei->nmem);
+	    data1_mk_tag_data_oid (zei->dh, d, "oid", p->oid, zei->nmem);
     }
     if ((p = accessInfo->schemas))
     {
-	d = data1_make_tag (zei->dh, c, "schemas", zei->nmem);
+	d = data1_mk_tag_uni (zei->dh, zei->nmem, "schemas", c);
 	for (; p; p = p->next)
-	    data1_add_tagdata_oid (zei->dh, d, "oid", p->oid, zei->nmem);
+	    data1_mk_tag_data_oid (zei->dh, d, "oid", p->oid, zei->nmem);
     }
 }
 
@@ -860,6 +779,12 @@ int zebraExplain_newDatabase (ZebraExplainInfo zei, const char *database,
 {
     struct zebDatabaseInfoB *zdi;
     data1_node *node_dbinfo, *node_adinfo;
+    const char *database_n = strrchr (database, '/');
+
+    if (database_n)
+        database_n++;
+    else
+        database_n = database;
 
 #if ZINFO_DEBUG
     logf (LOG_LOG, "zebraExplain_newDatabase: %s", database);
@@ -867,7 +792,7 @@ int zebraExplain_newDatabase (ZebraExplainInfo zei, const char *database,
     assert (zei);
     for (zdi = zei->databaseInfo; zdi; zdi=zdi->next)
     {
-        if (!strcmp (zdi->databaseName, database))
+        if (!STRCASECMP (zdi->databaseName, database_n))
             break;
     }
     if (zdi)
@@ -880,7 +805,7 @@ int zebraExplain_newDatabase (ZebraExplainInfo zei, const char *database,
     zdi->recordCount = 0;
     zdi->recordBytes = 0;
     zdi->readFlag = 0;
-    zdi->databaseName = nmem_strdup (zei->nmem, database);
+    zdi->databaseName = nmem_strdup (zei->nmem, database_n);
 
     zebraExplain_mergeAccessInfo (zei, 0, &zdi->accessInfo);
     
@@ -893,25 +818,25 @@ int zebraExplain_newDatabase (ZebraExplainInfo zei, const char *database,
 			 "</></>\n");
     if (!zdi->data1_database)
 	return -2;
-    
-    node_dbinfo = data1_search_tag (zei->dh, zdi->data1_database->child,
-				   "databaseInfo");
+
+    node_dbinfo = data1_search_tag (zei->dh, zdi->data1_database,
+                                    "/databaseInfo");
     assert (node_dbinfo);
 
     zebraExplain_initCommonInfo (zei, node_dbinfo);
     zebraExplain_initAccessInfo (zei, node_dbinfo);
 
-    data1_add_tagdata_text (zei->dh, node_dbinfo, "name",
+    data1_mk_tag_data_text (zei->dh, node_dbinfo, "name",
 			       database, zei->nmem);
     
     if (explain_database)
-	data1_add_tagdata_text (zei->dh, node_dbinfo, "explainDatabase",
+	data1_mk_tag_data_text (zei->dh, node_dbinfo, "explainDatabase",
 				"", zei->nmem);
     
-    data1_add_tagdata_text (zei->dh, node_dbinfo, "userFee",
+    data1_mk_tag_data_text (zei->dh, node_dbinfo, "userFee",
 			    "0", zei->nmem);
     
-    data1_add_tagdata_text (zei->dh, node_dbinfo, "available",
+    data1_mk_tag_data_text (zei->dh, node_dbinfo, "available",
 			    "1", zei->nmem);
     
 #if ZINFO_DEBUG
@@ -932,9 +857,8 @@ int zebraExplain_newDatabase (ZebraExplainInfo zei, const char *database,
 			 "<explain><attributeDetails>AttributeDetails\n"
 			 "</></>\n");
 
-    node_adinfo =
-	data1_search_tag (zei->dh, zdi->attributeDetails->data1_tree->child,
-			  "attributeDetails");
+    node_adinfo = data1_search_tag (zei->dh, zdi->attributeDetails->data1_tree,
+                                    "/attributeDetails");
     assert (node_adinfo);
 
     zebraExplain_initCommonInfo (zei, node_adinfo);
@@ -958,11 +882,11 @@ static void writeAttributeValueDetails (ZebraExplainInfo zei,
 	data1_node *node_attvalue, *node_value;
 	if (set_ordinal != zsui->info.set)
 	    continue;
-	node_attvalue = data1_add_tag (zei->dh, node_atvs, "attributeValue",
-				       zei->nmem);
-	node_value = data1_add_tag (zei->dh, node_attvalue, "value",
-				    zei->nmem);
-	data1_add_tagdata_int (zei->dh, node_value, "numeric",
+	node_attvalue = data1_mk_tag (zei->dh, zei->nmem, "attributeValue",
+                                      0 /* attr */, node_atvs);
+	node_value = data1_mk_tag (zei->dh, zei->nmem, "value",
+                                   0 /* attr */, node_attvalue);
+	data1_mk_tag_data_int (zei->dh, node_value, "numeric",
 			       zsui->info.use, zei->nmem);
     }
 }
@@ -996,19 +920,20 @@ static void zebraExplain_writeCategoryList (ZebraExplainInfo zei,
 #endif
 
     drec = createRecord (zei->records, &sysno);
-
-    node_ci = data1_search_tag (zei->dh, node_categoryList->child,
-				"categoryList");
+    
+    node_ci = data1_search_tag (zei->dh, node_categoryList,
+				"/categoryList");
     assert (node_ci);
-    node_ci = data1_add_tag (zei->dh, node_ci, "categories", zei->nmem);
+    node_ci = data1_mk_tag (zei->dh, zei->nmem, "categories", 0 /* attr */,
+                            node_ci);
     assert (node_ci);
     
     for (i = 0; category[i]; i++)
     {
-	data1_node *node_cat = data1_add_tag (zei->dh, node_ci, 
-					      "category", zei->nmem);
+	data1_node *node_cat = data1_mk_tag (zei->dh, zei->nmem,  "category",
+                                             0 /* attr */, node_ci);
 
-	data1_add_tagdata_text (zei->dh, node_cat, "name",
+	data1_mk_tag_data_text (zei->dh, node_cat, "name",
 				category[i], zei->nmem);
     }
     /* extract *searchable* keys from it. We do this here, because
@@ -1050,11 +975,12 @@ static void zebraExplain_writeAttributeDetails (ZebraExplainInfo zei,
 
     drec = createRecord (zei->records, &zad->sysno);
     assert (zad->data1_tree);
-    node_adinfo = data1_search_tag (zei->dh, zad->data1_tree->child,
-				   "attributeDetails");
+
+    node_adinfo = data1_search_tag (zei->dh, zad->data1_tree,
+				   "/attributeDetails");
     zebraExplain_updateCommonInfo (zei, node_adinfo);
 
-    data1_add_tagdata_text (zei->dh, node_adinfo, "name",
+    data1_mk_tag_data_text (zei->dh, node_adinfo, "name",
 			    databaseName, zei->nmem);
 
     /* extract *searchable* keys from it. We do this here, because
@@ -1062,8 +988,8 @@ static void zebraExplain_writeAttributeDetails (ZebraExplainInfo zei,
     if (key_flush)
 	(*zei->updateFunc)(zei->updateHandle, drec, zad->data1_tree);
 
-    node_attributesBySet = data1_make_tag (zei->dh, node_adinfo,
-					   "attributesBySet", zei->nmem);
+    node_attributesBySet = data1_mk_tag_uni (zei->dh, zei->nmem,
+					   "attributesBySet", node_adinfo);
     set_min = -1;
     while (1)
     {
@@ -1079,8 +1005,9 @@ static void zebraExplain_writeAttributeDetails (ZebraExplainInfo zei,
 	if (set_ordinal < 0)
 	    break;
 	set_min = set_ordinal;
-	node_asd = data1_add_tag (zei->dh, node_attributesBySet,
-				  "attributeSetDetails", zei->nmem);
+	node_asd = data1_mk_tag (zei->dh, zei->nmem,
+                                 "attributeSetDetails",
+                                 0 /* attr */, node_attributesBySet);
 
 	attset = data1_attset_search_id (zei->dh, set_ordinal);
 	if (!attset)
@@ -1100,44 +1027,48 @@ static void zebraExplain_writeAttributeDetails (ZebraExplainInfo zei,
 	    if (oid_ent_to_oid (&oe, oid))
 	    {
 		data1_node *node_abt, *node_atd, *node_atvs;
-		data1_add_tagdata_oid (zei->dh, node_asd, "oid",
+		data1_mk_tag_data_oid (zei->dh, node_asd, "oid",
 				       oid, zei->nmem);
 		
-		node_abt = data1_add_tag (zei->dh, node_asd,
-					  "attributesByType", zei->nmem);
-		node_atd = data1_add_tag (zei->dh, node_abt,
-					  "attributeTypeDetails", zei->nmem);
-		data1_add_tagdata_int (zei->dh, node_atd,
+		node_abt = data1_mk_tag (zei->dh, zei->nmem,
+                                         "attributesByType",
+                                         0 /*attr */, node_asd);
+		node_atd = data1_mk_tag (zei->dh, zei->nmem,
+                                         "attributeTypeDetails", 
+                                         0 /* attr */, node_abt);
+		data1_mk_tag_data_int (zei->dh, node_atd,
 				       "type", 1, zei->nmem);
-		node_atvs = data1_add_tag (zei->dh, node_atd, 
-					   "attributeValues", zei->nmem);
+		node_atvs = data1_mk_tag (zei->dh, zei->nmem, 
+                                          "attributeValues",
+                                          0 /* attr */, node_atd);
 		writeAttributeValueDetails (zei, zad, node_atvs, attset);
 	    }
 	}
     }
     /* zebra info (private) */
-    node_zebra = data1_make_tag (zei->dh, node_adinfo,
-				 "zebraInfo", zei->nmem);
-    node_list = data1_make_tag (zei->dh, node_zebra,
-				 "attrlist", zei->nmem);
+    node_zebra = data1_mk_tag_uni (zei->dh, zei->nmem,
+				 "zebraInfo", node_adinfo);
+    node_list = data1_mk_tag_uni (zei->dh, zei->nmem,
+				 "attrlist", node_zebra);
     for (zsui = zad->SUInfo; zsui; zsui = zsui->next)
     {
 	struct oident oident;
 	int oid[OID_SIZE];
 	data1_node *node_attr;
 	
-	node_attr = data1_add_tag (zei->dh, node_list, "attr", zei->nmem);
+	node_attr = data1_mk_tag (zei->dh, zei->nmem, "attr", 0 /* attr */,
+                                  node_list);
 	
 	oident.proto = PROTO_Z3950;
 	oident.oclass = CLASS_ATTSET;
 	oident.value = (enum oid_value) zsui->info.set;
 	oid_ent_to_oid (&oident, oid);
 	
-	data1_add_tagdata_text (zei->dh, node_attr, "set",
+	data1_mk_tag_data_text (zei->dh, node_attr, "set",
 				oident.desc, zei->nmem);
-	data1_add_tagdata_int (zei->dh, node_attr, "use",
+	data1_mk_tag_data_int (zei->dh, node_attr, "use",
 			       zsui->info.use, zei->nmem);
-	data1_add_tagdata_int (zei->dh, node_attr, "ordinal",
+	data1_mk_tag_data_int (zei->dh, node_attr, "ordinal",
 			       zsui->info.ordinal, zei->nmem);
     }
     /* convert to "SGML" and write it */
@@ -1171,9 +1102,11 @@ static void zebraExplain_writeDatabase (ZebraExplainInfo zei,
 #endif
     drec = createRecord (zei->records, &zdi->sysno);
     assert (zdi->data1_database);
-    node_dbinfo = data1_search_tag (zei->dh, zdi->data1_database->child,
-				   "databaseInfo");
 
+    node_dbinfo = data1_search_tag (zei->dh, zdi->data1_database,
+                                    "/databaseInfo");
+
+    assert (node_dbinfo);
     zebraExplain_updateCommonInfo (zei, node_dbinfo);
     zebraExplain_updateAccessInfo (zei, node_dbinfo, zdi->accessInfo);
 
@@ -1182,15 +1115,15 @@ static void zebraExplain_writeDatabase (ZebraExplainInfo zei,
     if (key_flush)
 	(*zei->updateFunc)(zei->updateHandle, drec, zdi->data1_database);
     /* record count */
-    node_count = data1_make_tag (zei->dh, node_dbinfo,
-				 "recordCount", zei->nmem);
-    data1_add_tagdata_int (zei->dh, node_count, "recordCountActual",
+    node_count = data1_mk_tag_uni (zei->dh, zei->nmem,
+				 "recordCount", node_dbinfo);
+    data1_mk_tag_data_int (zei->dh, node_count, "recordCountActual",
 			      zdi->recordCount, zei->nmem);
 
     /* zebra info (private) */
-    node_zebra = data1_make_tag (zei->dh, node_dbinfo,
-				 "zebraInfo", zei->nmem);
-    data1_add_tagdata_int (zei->dh, node_zebra,
+    node_zebra = data1_mk_tag_uni (zei->dh, zei->nmem,
+				 "zebraInfo", node_dbinfo);
+    data1_mk_tag_data_int (zei->dh, node_zebra,
 			   "recordBytes", zdi->recordBytes, zei->nmem);
     /* convert to "SGML" and write it */
 #if ZINFO_DEBUG
@@ -1221,12 +1154,13 @@ static void writeAttributeValues (ZebraExplainInfo zei,
     {
 	data1_node *node_value;
 	
-	node_value = data1_add_tag (zei->dh, node_values, "attributeValue",
-				    zei->nmem);
-	data1_add_tagdata_text (zei->dh, node_value, "name",
+	node_value = data1_mk_tag (zei->dh, zei->nmem, "attributeValue",
+                                   0 /* attr */, node_values);
+	data1_mk_tag_data_text (zei->dh, node_value, "name",
 				atts->name, zei->nmem);
-        node_value = data1_add_tag (zei->dh, node_value, "value", zei->nmem);
-	data1_add_tagdata_int (zei->dh, node_value, "numeric",
+        node_value = data1_mk_tag (zei->dh, zei->nmem, "value",
+                                   0 /* attr */, node_value);
+	data1_mk_tag_data_int (zei->dh, node_value, "numeric",
 			       atts->value, zei->nmem);
     }
 }
@@ -1258,30 +1192,31 @@ static void zebraExplain_writeAttributeSet (ZebraExplainInfo zei,
 			 "<explain><attributeSetInfo>AttributeSetInfo\n"
 			 "</></>\n" );
 
-    node_attinfo = data1_search_tag (zei->dh, node_root->child,
-				   "attributeSetInfo");
+    node_attinfo = data1_search_tag (zei->dh, node_root,
+				   "/attributeSetInfo");
 
+    assert (node_attinfo);
     zebraExplain_initCommonInfo (zei, node_attinfo);
     zebraExplain_updateCommonInfo (zei, node_attinfo);
 
-    data1_add_tagdata_oid (zei->dh, node_attinfo,
+    data1_mk_tag_data_oid (zei->dh, node_attinfo,
 			    "oid", o->oid, zei->nmem);
     if (attset && attset->name)
-	data1_add_tagdata_text (zei->dh, node_attinfo,
+	data1_mk_tag_data_text (zei->dh, node_attinfo,
 				"name", attset->name, zei->nmem);
     
-    node_attributes = data1_make_tag (zei->dh, node_attinfo,
-				      "attributes", zei->nmem);
-    node_atttype = data1_make_tag (zei->dh, node_attributes,
-				   "attributeType", zei->nmem);
-    data1_add_tagdata_text (zei->dh, node_atttype,
+    node_attributes = data1_mk_tag_uni (zei->dh, zei->nmem,
+				      "attributes", node_attinfo);
+    node_atttype = data1_mk_tag_uni (zei->dh, zei->nmem,
+				   "attributeType", node_attributes);
+    data1_mk_tag_data_text (zei->dh, node_atttype,
 			    "name", "Use", zei->nmem);
-    data1_add_tagdata_text (zei->dh, node_atttype,
+    data1_mk_tag_data_text (zei->dh, node_atttype,
 			    "description", "Use Attribute", zei->nmem);
-    data1_add_tagdata_int (zei->dh, node_atttype,
+    data1_mk_tag_data_int (zei->dh, node_atttype,
 			   "type", 1, zei->nmem);
-    node_values = data1_add_tag (zei->dh, node_atttype,
-				 "attributeValues", zei->nmem);
+    node_values = data1_mk_tag (zei->dh, zei->nmem,
+                                "attributeValues", 0 /* attr */, node_atttype);
     if (attset)
 	writeAttributeValues (zei, node_values, attset);
 
@@ -1316,8 +1251,8 @@ static void zebraExplain_writeTarget (ZebraExplainInfo zei, int key_flush)
     trec = rec_get (zei->records, 1);
     xfree (trec->info[recInfo_storeData]);
 
-    node_tgtinfo = data1_search_tag (zei->dh, zei->data1_target->child,
-				   "targetInfo");
+    node_tgtinfo = data1_search_tag (zei->dh, zei->data1_target,
+                                     "/targetInfo");
     assert (node_tgtinfo);
 
     zebraExplain_updateCommonInfo (zei, node_tgtinfo);
@@ -1327,28 +1262,28 @@ static void zebraExplain_writeTarget (ZebraExplainInfo zei, int key_flush)
     if (key_flush)
 	(*zei->updateFunc)(zei->updateHandle, trec, zei->data1_target);
 
-    node_zebra = data1_make_tag (zei->dh, node_tgtinfo,
-				 "zebraInfo", zei->nmem);
-    data1_add_tagdata_text (zei->dh, node_zebra, "version",
+    node_zebra = data1_mk_tag_uni (zei->dh, zei->nmem,
+				 "zebraInfo", node_tgtinfo);
+    data1_mk_tag_data_text (zei->dh, node_zebra, "version",
 			       ZEBRAVER, zei->nmem);
-    node_list = data1_add_tag (zei->dh, node_zebra,
-				  "databaseList", zei->nmem);
+    node_list = data1_mk_tag (zei->dh, zei->nmem,
+                              "databaseList", 0 /* attr */, node_zebra);
     for (zdi = zei->databaseInfo; zdi; zdi = zdi->next)
     {
 	data1_node *node_db;
-	node_db = data1_add_tag (zei->dh, node_list,
-				    "database", zei->nmem);
-	data1_add_tagdata_text (zei->dh, node_db, "name",
-				   zdi->databaseName, zei->nmem);
-	data1_add_tagdata_int (zei->dh, node_db, "id",
-				  zdi->sysno, zei->nmem);
-	data1_add_tagdata_int (zei->dh, node_db, "attributeDetailsId",
-				  zdi->attributeDetails->sysno, zei->nmem);
+	node_db = data1_mk_tag (zei->dh, zei->nmem,
+                                "database", 0 /* attr */, node_list);
+	data1_mk_tag_data_text (zei->dh, node_db, "name",
+                                zdi->databaseName, zei->nmem);
+	data1_mk_tag_data_int (zei->dh, node_db, "id",
+                               zdi->sysno, zei->nmem);
+	data1_mk_tag_data_int (zei->dh, node_db, "attributeDetailsId",
+                               zdi->attributeDetails->sysno, zei->nmem);
     }
-    data1_add_tagdata_int (zei->dh, node_zebra, "ordinalSU",
-			      zei->ordinalSU, zei->nmem);
+    data1_mk_tag_data_int (zei->dh, node_zebra, "ordinalSU",
+                           zei->ordinalSU, zei->nmem);
 
-    data1_add_tagdata_int (zei->dh, node_zebra, "runNumber",
+    data1_mk_tag_data_int (zei->dh, node_zebra, "runNumber",
 			      zei->runNumber, zei->nmem);
 
 #if ZINFO_DEBUG
@@ -1375,6 +1310,19 @@ int zebraExplain_lookupSU (ZebraExplainInfo zei, int set, int use)
     return -1;
 }
 
+int zebraExplain_trav_ord(ZebraExplainInfo zei, void *handle,
+			  int (*f)(void *handle, int ord))
+{
+    struct zebDatabaseInfoB *zdb = zei->curDatabaseInfo;
+    if (zdb)
+    {
+	struct zebSUInfoB *zsui = zdb->attributeDetails->SUInfo;
+	for ( ;zsui; zsui = zsui->next)
+	    (*f)(handle,  zsui->info.ordinal);
+    }
+    return 0;
+}
+			  
 int zebraExplain_lookup_ord (ZebraExplainInfo zei, int ord,
 			     const char **db, int *set, int *use)
 {
@@ -1485,7 +1433,9 @@ void zebraExplain_recordCountIncrement (ZebraExplainInfo zei, int adjust_num)
 int zebraExplain_runNumberIncrement (ZebraExplainInfo zei, int adjust_num)
 {
     if (adjust_num)
+    {
 	zei->dirty = 1;
+    }
     return zei->runNumber += adjust_num;
 }
 
@@ -1509,7 +1459,7 @@ static void att_loadset(void *p, const char *n, const char *name)
 {
     data1_handle dh = (data1_handle) p;
     if (!data1_get_attset (dh, name))
-	logf (LOG_WARN, "Couldn't load attribute set %s", name);
+	logf (LOG_WARN, "Directive attset failed for %s", name);
 }
 
 void zebraExplain_loadAttsets (data1_handle dh, Res res)