X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=src%2Fclient.c;h=c238f0a9f31074da10e394cc06520e46bb3b7d9d;hb=6f67e37390eee5bb4df6a456de88045ef810406d;hp=02419cebafb5193a591bfc5b112c63f7cb732e43;hpb=315147fb5968cb466939ad2c2cdf66ecd53e4222;p=pazpar2-moved-to-github.git

diff --git a/src/client.c b/src/client.c
index 02419ce..c238f0a 100644
--- a/src/client.c
+++ b/src/client.c
@@ -1,7 +1,5 @@
-/* $Id: client.c,v 1.25 2007-09-20 09:22:37 adam Exp $
-   Copyright (c) 2006-2007, Index Data.
-
-This file is part of Pazpar2.
+/* This file is part of Pazpar2.
+   Copyright (C) 2006-2010 Index Data
 
 Pazpar2 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
@@ -14,24 +12,29 @@ 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 Pazpar2; see the file LICENSE.  If not, write to the
-Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA.
- */
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
 
 /** \file client.c
     \brief Z39.50 client 
 */
 
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <pthread.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#if HAVE_SYS_TIME_H
 #include <sys/time.h>
+#endif
+#if HAVE_UNISTD_H
 #include <unistd.h>
-#include <sys/socket.h>
-#include <netdb.h>
+#endif
 #include <signal.h>
-#include <ctype.h>
 #include <assert.h>
 
 #include <yaz/marcdisp.h>
@@ -47,23 +50,40 @@ Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #include <yaz/querytowrbuf.h>
 #include <yaz/oid_db.h>
 #include <yaz/diagbib1.h>
-
-#if HAVE_CONFIG_H
-#include "cconfig.h"
-#endif
+#include <yaz/snprintf.h>
+#include <yaz/rpn2cql.h>
 
 #define USE_TIMING 0
 #if USE_TIMING
 #include <yaz/timing.h>
 #endif
 
-#include <netinet/in.h>
-
-#include "pazpar2.h"
-
+#include "ppmutex.h"
+#include "session.h"
+#include "parameters.h"
 #include "client.h"
 #include "connection.h"
 #include "settings.h"
+#include "relevance.h"
+#include "incref.h"
+
+/* client counting (1) , disable client counting (0) */
+#if 1
+static YAZ_MUTEX g_mutex = 0;
+static int no_clients = 0;
+
+static void client_use(int delta)
+{
+    if (!g_mutex)
+        yaz_mutex_create(&g_mutex);
+    yaz_mutex_enter(g_mutex);
+    no_clients += delta;
+    yaz_mutex_leave(g_mutex);
+    yaz_log(YLOG_LOG, "%s clients=%d", delta > 0 ? "INC" : "DEC", no_clients);
+}
+#else
+#define client_use(x)
+#endif
 
 /** \brief Represents client state for a connection to one search target */
 struct client {
@@ -71,60 +91,40 @@ struct client {
     struct connection *connection;
     struct session *session;
     char *pquery; // Current search
-    int hits;
-    int records;
-    int setno;
-    int requestid;            // ID of current outstanding request
+    char *cqlquery; // used for SRU targets only
+    Odr_int hits;
+    int record_offset;
+    int maxrecs;
+    int startrecs;
     int diagnostic;
     enum client_state state;
     struct show_raw *show_raw;
-    struct client *next;     // next client in session or next in free list
+    ZOOM_resultset resultset;
+    YAZ_MUTEX mutex;
+    int ref_count;
 };
 
 struct show_raw {
     int active; // whether this request has been sent to the server
     int position;
+    int binary;
     char *syntax;
     char *esn;
     void (*error_handler)(void *data, const char *addinfo);
     void (*record_handler)(void *data, const char *buf, size_t sz);
     void *data;
+    struct show_raw *next;
 };
 
 static const char *client_states[] = {
     "Client_Connecting",
-    "Client_Connected",
     "Client_Idle",
-    "Client_Initializing",
-    "Client_Searching",
-    "Client_Presenting",
+    "Client_Working",
     "Client_Error",
     "Client_Failed",
-    "Client_Disconnected",
-    "Client_Stopped",
-    "Client_Continue"
+    "Client_Disconnected"
 };
 
-static struct client *client_freelist = 0;
-
-static int send_apdu(struct client *c, Z_APDU *a)
-{
-    struct session_database *sdb = client_get_database(c);
-    const char *apdulog = session_setting_oneval(sdb, PZ_APDULOG);
-    if (apdulog && *apdulog && *apdulog != '0')
-    {
-        ODR p = odr_createmem(ODR_PRINT);
-        yaz_log(YLOG_LOG, "send APDU %s", client_get_url(c));
-
-        odr_setprint(p, yaz_log_file());
-        z_APDU(p, &a, 0, 0);
-        odr_setprint(p, stderr);
-        odr_destroy(p);
-    }
-    return connection_send_apdu(client_get_connection(c), a);
-}
-
-
 const char *client_get_state_str(struct client *cl)
 {
     return client_states[cl->state];
@@ -138,74 +138,20 @@ enum client_state client_get_state(struct client *cl)
 void client_set_state(struct client *cl, enum client_state st)
 {
     cl->state = st;
-    if (cl->session)
+    /* no need to check for all client being non-active if this one
+       already is. Note that session_active_clients also LOCKS session */
+#if 0
+    if (!client_is_active(cl) && cl->session)
     {
         int no_active = session_active_clients(cl->session);
         if (no_active == 0)
             session_alert_watch(cl->session, SESSION_WATCH_SHOW);
     }
+#endif
 }
 
 static void client_show_raw_error(struct client *cl, const char *addinfo);
 
-// Close connection and set state to error
-void client_fatal(struct client *cl)
-{
-    client_show_raw_error(cl, "client connection failure");
-    yaz_log(YLOG_WARN, "Fatal error from %s", client_get_url(cl));
-    connection_destroy(cl->connection);
-    client_set_state(cl, Client_Error);
-}
-
-
-static int diag_to_wrbuf(Z_DiagRec **pp, int num, WRBUF w)
-{
-    int code = 0;
-    int i;
-    for (i = 0; i<num; i++)
-    {
-        Z_DiagRec *p = pp[i];
-        if (i)
-            wrbuf_puts(w, "; ");
-        if (p->which != Z_DiagRec_defaultFormat)
-        {
-            wrbuf_puts(w, "? Not in default format");
-        }
-        else
-        {
-            Z_DefaultDiagFormat *r = p->u.defaultFormat;
-            
-            if (!r->diagnosticSetId)
-                wrbuf_puts(w, "? Missing diagset");
-            else
-            {
-                oid_class oclass;
-                char diag_name_buf[OID_STR_MAX];
-                const char *diag_name = 0;
-                diag_name = yaz_oid_to_string_buf
-                    (r->diagnosticSetId, &oclass, diag_name_buf);
-                wrbuf_puts(w, diag_name);
-            }
-            if (!code)
-                code = *r->condition;
-            wrbuf_printf(w, " %d %s", *r->condition,
-                         diagbib1_str(*r->condition));
-            switch (r->which)
-            {
-            case Z_DefaultDiagFormat_v2Addinfo:
-                wrbuf_printf(w, " -- v2 addinfo '%s'", r->u.v2Addinfo);
-                break;
-            case Z_DefaultDiagFormat_v3Addinfo:
-                wrbuf_printf(w, " -- v3 addinfo '%s'", r->u.v3Addinfo);
-                break;
-            }
-        }
-    }
-    return code;
-}
-
-
-
 struct connection *client_get_connection(struct client *cl)
 {
     return cl->connection;
@@ -226,674 +172,525 @@ const char *client_get_pquery(struct client *cl)
     return cl->pquery;
 }
 
-void client_set_requestid(struct client *cl, int id)
+static void client_send_raw_present(struct client *cl);
+static int nativesyntax_to_type(struct session_database *sdb, char *type,
+                                ZOOM_record rec);
+
+static void client_show_immediate(
+    ZOOM_resultset resultset, struct session_database *sdb, int position,
+    void *data,
+    void (*error_handler)(void *data, const char *addinfo),
+    void (*record_handler)(void *data, const char *buf, size_t sz),
+    int binary)
 {
-    cl->requestid = id;
+    ZOOM_record rec = 0;
+    char type[80];
+    const char *buf;
+    int len;
+
+    if (!resultset)
+    {
+        error_handler(data, "no resultset");
+        return;
+    }
+    rec = ZOOM_resultset_record(resultset, position-1);
+    if (!rec)
+    {
+        error_handler(data, "no record");
+        return;
+    }
+    if (binary)
+        strcpy(type, "raw");
+    else
+        nativesyntax_to_type(sdb, type, rec);
+    buf = ZOOM_record_get(rec, type, &len);
+    if (!buf)
+    {
+        error_handler(data, "no record");
+        return;
+    }
+    record_handler(data, buf, len);
 }
 
+
 int client_show_raw_begin(struct client *cl, int position,
                           const char *syntax, const char *esn,
                           void *data,
                           void (*error_handler)(void *data, const char *addinfo),
                           void (*record_handler)(void *data, const char *buf,
-                                                 size_t sz))
-{
-    if (cl->show_raw)
-        return -1;
-    cl->show_raw = xmalloc(sizeof(*cl->show_raw));
-    cl->show_raw->position = position;
-    cl->show_raw->active = 0;
-    cl->show_raw->data = data;
-    cl->show_raw->error_handler = error_handler;
-    cl->show_raw->record_handler = record_handler;
-    if (syntax)
-        cl->show_raw->syntax = xstrdup(syntax);
-    else
-        cl->show_raw->syntax = 0;
-    if (esn)
-        cl->show_raw->esn = xstrdup(esn);
+                                                 size_t sz),
+                          int binary)
+{
+    if (syntax == 0 && esn == 0)
+        client_show_immediate(cl->resultset, client_get_database(cl),
+                              position, data,
+                              error_handler, record_handler,
+                              binary);
     else
-        cl->show_raw->esn = 0;
+    {
+        struct show_raw *rr, **rrp;
+
+        if (!cl->connection)
+            return -1;
     
 
-    if (cl->state == Client_Failed)
-    {
-        client_show_raw_error(cl, "client failed");
-    }
-    else if (cl->state == Client_Disconnected)
-    {
-        client_show_raw_error(cl, "client disconnected");
-    }
-    else
-    {
-        client_continue(cl);
+        rr = xmalloc(sizeof(*rr));
+        rr->position = position;
+        rr->active = 0;
+        rr->data = data;
+        rr->error_handler = error_handler;
+        rr->record_handler = record_handler;
+        rr->binary = binary;
+        if (syntax)
+            rr->syntax = xstrdup(syntax);
+        else
+            rr->syntax = 0;
+        if (esn)
+            rr->esn = xstrdup(esn);
+        else
+            rr->esn = 0;
+        rr->next = 0;
+        
+        for (rrp = &cl->show_raw; *rrp; rrp = &(*rrp)->next)
+            ;
+        *rrp = rr;
+        
+        if (cl->state == Client_Failed)
+        {
+            client_show_raw_error(cl, "client failed");
+        }
+        else if (cl->state == Client_Disconnected)
+        {
+            client_show_raw_error(cl, "client disconnected");
+        }
+        else
+        {
+            client_send_raw_present(cl);
+        }
     }
     return 0;
 }
 
-void client_show_raw_reset(struct client *cl)
+static void client_show_raw_delete(struct show_raw *r)
 {
-    xfree(cl->show_raw);
-    cl->show_raw = 0;
+    xfree(r->syntax);
+    xfree(r->esn);
+    xfree(r);
 }
 
-static void client_show_raw_error(struct client *cl, const char *addinfo)
+void client_show_raw_remove(struct client *cl, void *data)
 {
-    if (cl->show_raw)
+    struct show_raw *rr = data;
+    struct show_raw **rrp = &cl->show_raw;
+    while (*rrp != rr)
+        rrp = &(*rrp)->next;
+    if (*rrp)
     {
-        cl->show_raw->error_handler(cl->show_raw->data, addinfo);
-        client_show_raw_reset(cl);
+        *rrp = rr->next;
+        client_show_raw_delete(rr);
     }
 }
 
-static void client_show_raw_cancel(struct client *cl)
+void client_show_raw_dequeue(struct client *cl)
 {
-    if (cl->show_raw)
-    {
-        cl->show_raw->error_handler(cl->show_raw->data, "cancel");
-        client_show_raw_reset(cl);
-    }
-}
+    struct show_raw *rr = cl->show_raw;
 
-static void client_present_syntax(Z_APDU *a, const char *syntax)
-{
-    // empty string for syntax OMITS preferredRecordSyntax (OPTIONAL)
-    if (syntax && *syntax)
-        a->u.presentRequest->preferredRecordSyntax =
-            yaz_string_to_oid_odr(yaz_oid_std(),
-                                  CLASS_RECSYN, syntax,
-                                  global_parameters.odr_out);
+    cl->show_raw = rr->next;
+    client_show_raw_delete(rr);
 }
 
-static void client_present_elements(Z_APDU *a, const char *elements)
+static void client_show_raw_error(struct client *cl, const char *addinfo)
 {
-    if (elements && *elements)  // element set is optional
+    while (cl->show_raw)
     {
-        Z_ElementSetNames *elementSetNames =
-            odr_malloc(global_parameters.odr_out, sizeof(*elementSetNames));
-        Z_RecordComposition *compo = 
-            odr_malloc(global_parameters.odr_out, sizeof(*compo));
-        a->u.presentRequest->recordComposition = compo;
-
-        compo->which = Z_RecordComp_simple;
-        compo->u.simple = elementSetNames;
-
-        elementSetNames->which = Z_ElementSetNames_generic;
-        elementSetNames->u.generic = 
-            odr_strdup(global_parameters.odr_out, elements);
+        cl->show_raw->error_handler(cl->show_raw->data, addinfo);
+        client_show_raw_dequeue(cl);
     }
 }
 
-void client_send_raw_present(struct client *cl)
+static void client_send_raw_present(struct client *cl)
 {
     struct session_database *sdb = client_get_database(cl);
-    Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_presentRequest);
-    int toget = 1;
-    int start = cl->show_raw->position;
+    struct connection *co = client_get_connection(cl);
+    ZOOM_resultset set = cl->resultset;
+
+    int offset = cl->show_raw->position;
     const char *syntax = 0;
     const char *elements = 0;
 
     assert(cl->show_raw);
+    assert(set);
 
     yaz_log(YLOG_DEBUG, "%s: trying to present %d record(s) from %d",
-            client_get_url(cl), toget, start);
-
-    a->u.presentRequest->resultSetStartPoint = &start;
-    a->u.presentRequest->numberOfRecordsRequested = &toget;
+            client_get_url(cl), 1, offset);
 
     if (cl->show_raw->syntax)
         syntax = cl->show_raw->syntax;
     else
         syntax = session_setting_oneval(sdb, PZ_REQUESTSYNTAX);
+    ZOOM_resultset_option_set(set, "preferredRecordSyntax", syntax);
 
-    client_present_syntax(a, syntax);
     if (cl->show_raw->esn)
         elements = cl->show_raw->esn;
     else
         elements = session_setting_oneval(sdb, PZ_ELEMENTS);
-    client_present_elements(a, elements);
+    if (elements && *elements)
+        ZOOM_resultset_option_set(set, "elementSetName", elements);
 
-    if (send_apdu(cl, a) >= 0)
-    {
-        cl->show_raw->active = 1;
-	cl->state = Client_Presenting;
-    }
-    else
-    {
-        client_show_raw_error(cl, "send_apdu failed");
-        cl->state = Client_Error;
-    }
-    odr_reset(global_parameters.odr_out);
-}
+    ZOOM_resultset_records(set, 0, offset-1, 1);
+    cl->show_raw->active = 1;
 
-void client_send_present(struct client *cl)
-{
-    struct session_database *sdb = client_get_database(cl);
-    Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_presentRequest);
-    int toget;
-    int start = cl->records + 1;
-    const char *syntax = 0;
-    const char *elements = 0;
-
-    toget = global_parameters.chunk;
-    if (toget > global_parameters.toget - cl->records)
-        toget = global_parameters.toget - cl->records;
-    if (toget > cl->hits - cl->records)
-	toget = cl->hits - cl->records;
-
-    yaz_log(YLOG_DEBUG, "Trying to present %d record(s) from %d",
-            toget, start);
-
-    a->u.presentRequest->resultSetStartPoint = &start;
-    a->u.presentRequest->numberOfRecordsRequested = &toget;
-
-    syntax = session_setting_oneval(sdb, PZ_REQUESTSYNTAX);
-    client_present_syntax(a, syntax);
-
-    elements = session_setting_oneval(sdb, PZ_ELEMENTS);
-    client_present_elements(a, elements);
-
-    if (send_apdu(cl, a) >= 0)
-	cl->state = Client_Presenting;
-    else
-        cl->state = Client_Error;
-    odr_reset(global_parameters.odr_out);
+    connection_continue(co);
 }
 
-
-void client_send_search(struct client *cl)
+static int nativesyntax_to_type(struct session_database *sdb, char *type,
+                                ZOOM_record rec)
 {
-    struct session *se = client_get_session(cl);
-    struct session_database *sdb = client_get_database(cl);
-    Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_searchRequest);
-    int ndb;
-    char **databaselist;
-    Z_Query *zquery;
-    int ssub = 0, lslb = 100000, mspn = 10;
-    const char *piggyback = session_setting_oneval(sdb, PZ_PIGGYBACK);
-    const char *queryenc = session_setting_oneval(sdb, PZ_QUERYENCODING);
-
-    yaz_log(YLOG_DEBUG, "Sending search to %s", sdb->database->url);
-
-    
-    // constructing RPN query
-    a->u.searchRequest->query = zquery = odr_malloc(global_parameters.odr_out,
-                                                    sizeof(Z_Query));
-    zquery->which = Z_Query_type_1;
-    zquery->u.type_1 = p_query_rpn(global_parameters.odr_out, 
-                                   client_get_pquery(cl));
-
-    // converting to target encoding
-    if (queryenc && *queryenc)
-    {
-        yaz_iconv_t iconv = yaz_iconv_open(queryenc, "UTF-8");
-        if (iconv){
-            yaz_query_charset_convert_rpnquery(zquery->u.type_1, 
-                                               global_parameters.odr_out, 
-                                               iconv);
-            yaz_iconv_close(iconv);
-        } else
-            yaz_log(YLOG_WARN, "Query encoding failed %s %s", 
-                    client_get_database(cl)->database->url, queryenc);
-    }
+    const char *s = session_setting_oneval(sdb, PZ_NATIVESYNTAX);
 
-    for (ndb = 0; sdb->database->databases[ndb]; ndb++)
-	;
-    databaselist = odr_malloc(global_parameters.odr_out, sizeof(char*) * ndb);
-    for (ndb = 0; sdb->database->databases[ndb]; ndb++)
-	databaselist[ndb] = sdb->database->databases[ndb];
-
-    if (!piggyback || *piggyback == '1')
+    if (s && *s)
     {
-        const char *elements = session_setting_oneval(sdb, PZ_ELEMENTS);
-        const char *recsyn = session_setting_oneval(sdb, PZ_REQUESTSYNTAX);
-        if (recsyn && *recsyn)
+        if (!strncmp(s, "iso2709", 7))
         {
-            a->u.searchRequest->preferredRecordSyntax =
-                yaz_string_to_oid_odr(yaz_oid_std(),
-                                      CLASS_RECSYN, recsyn,
-                                      global_parameters.odr_out);
+            const char *cp = strchr(s, ';');
+            yaz_snprintf(type, 80, "xml; charset=%s", cp ? cp+1 : "marc-8s");
         }
-        if (elements && *elements)
+        else if (!strncmp(s, "xml", 3))
         {
-            Z_ElementSetNames *esn =
-                odr_malloc(global_parameters.odr_out, sizeof(*esn));
-            esn->which = Z_ElementSetNames_generic;
-            esn->u.generic = odr_strdup(global_parameters.odr_out, elements);
-
-            a->u.searchRequest->smallSetElementSetNames = esn;
-            a->u.searchRequest->mediumSetElementSetNames = esn;
+            strcpy(type, "xml");
         }
-        a->u.searchRequest->smallSetUpperBound = &ssub;
-        a->u.searchRequest->largeSetLowerBound = &lslb;
-        a->u.searchRequest->mediumSetPresentNumber = &mspn;
-    }
-    a->u.searchRequest->databaseNames = databaselist;
-    a->u.searchRequest->num_databaseNames = ndb;
-
-    
-    {  //scope for sending and logging queries 
-        WRBUF wbquery = wrbuf_alloc();
-        yaz_query_to_wrbuf(wbquery, a->u.searchRequest->query);
-
-
-        if (send_apdu(cl, a) >= 0)
+        else if (!strncmp(s, "txml", 4))
         {
-            client_set_state(cl, Client_Searching);
-            client_set_requestid(cl, se->requestid);
-            yaz_log(YLOG_LOG, "SearchRequest %s %s %s", 
-                    client_get_database(cl)->database->url,
-                    queryenc ? queryenc : "UTF-8",
-                    wrbuf_cstr(wbquery));
+            const char *cp = strchr(s, ';');
+            yaz_snprintf(type, 80, "txml; charset=%s", cp ? cp+1 : "marc-8s");
         }
-        else {
-            client_set_state(cl, Client_Error);
-            yaz_log(YLOG_WARN, "Failed SearchRequest %s  %s %s", 
-                    client_get_database(cl)->database->url, 
-                    queryenc ? queryenc : "UTF-8",
-                    wrbuf_cstr(wbquery));
+        else
+            return -1;
+        return 0;
+    }
+    else  /* attempt to deduce structure */
+    {
+        const char *syntax = ZOOM_record_get(rec, "syntax", NULL);
+        if (syntax)
+        {
+            if (!strcmp(syntax, "XML"))
+            {
+                strcpy(type, "xml");
+                return 0;
+            }
+            else if (!strcmp(syntax, "TXML"))
+                {
+                    strcpy(type, "txml");
+                    return 0;
+                }
+            else if (!strcmp(syntax, "USmarc") || !strcmp(syntax, "MARC21"))
+            {
+                strcpy(type, "xml; charset=marc8-s");
+                return 0;
+            }
+            else return -1;
         }
-        
-        wrbuf_destroy(wbquery);
-    }    
-
-    odr_reset(global_parameters.odr_out);
+        else return -1;
+    }
 }
 
-void client_init_response(struct client *cl, Z_APDU *a)
+static void ingest_raw_record(struct client *cl, ZOOM_record rec)
 {
-    Z_InitResponse *r = a->u.initResponse;
-
-    yaz_log(YLOG_DEBUG, "Init response %s", cl->database->database->url);
+    const char *buf;
+    int len;
+    char type[80];
 
-    if (*r->result)
-	cl->state = Client_Continue;
+    if (cl->show_raw->binary)
+        strcpy(type, "raw");
     else
-        cl->state = Client_Failed; // FIXME need to do something to the connection
-}
-
-
-static void ingest_raw_records(struct client *cl, Z_Records *r)
-{
-    Z_NamePlusRecordList *rlist;
-    Z_NamePlusRecord *npr;
-    xmlDoc *doc;
-    xmlChar *buf_out;
-    int len_out;
-    if (r->which != Z_Records_DBOSD)
-    {
-        client_show_raw_error(cl, "non-surrogate diagnostics");
-        return;
-    }
-
-    rlist = r->u.databaseOrSurDiagnostics;
-    if (rlist->num_records != 1 || !rlist->records || !rlist->records[0])
-    {
-        client_show_raw_error(cl, "no records");
-        return;
-    }
-    npr = rlist->records[0];
-    if (npr->which != Z_NamePlusRecord_databaseRecord)
-    {
-        client_show_raw_error(cl, "surrogate diagnostic");
-        return;
-    }
-
-    doc = record_to_xml(client_get_database(cl), npr->u.databaseRecord);
-    if (!doc)
     {
-        client_show_raw_error(cl, "unable to convert record to xml");
-        return;
+        struct session_database *sdb = client_get_database(cl);
+        nativesyntax_to_type(sdb, type, rec);
     }
 
-    xmlDocDumpMemory(doc, &buf_out, &len_out);
-    xmlFreeDoc(doc);
-
-    cl->show_raw->record_handler(cl->show_raw->data,
-                                 (const char *) buf_out, len_out);
-    
-    xmlFree(buf_out);
-    xfree(cl->show_raw);
-    cl->show_raw = 0;
+    buf = ZOOM_record_get(rec, type, &len);
+    cl->show_raw->record_handler(cl->show_raw->data,  buf, len);
+    client_show_raw_dequeue(cl);
 }
 
-static void ingest_records(struct client *cl, Z_Records *r)
+void client_search_response(struct client *cl)
 {
-#if USE_TIMING
-    yaz_timing_t t = yaz_timing_create();
-#endif
-    struct record *rec;
-    struct session *s = client_get_session(cl);
-    Z_NamePlusRecordList *rlist;
-    int i;
-
-    if (r->which != Z_Records_DBOSD)
-        return;
-    rlist = r->u.databaseOrSurDiagnostics;
-    for (i = 0; i < rlist->num_records; i++)
+    struct connection *co = cl->connection;
+    struct session *se = cl->session;
+    ZOOM_connection link = connection_get_link(co);
+    ZOOM_resultset resultset = cl->resultset;
+    const char *error, *addinfo = 0;
+    
+    if (ZOOM_connection_error(link, &error, &addinfo))
     {
-        Z_NamePlusRecord *npr = rlist->records[i];
-
-        cl->records++;
-        if (npr->which != Z_NamePlusRecord_databaseRecord)
-        {
-            yaz_log(YLOG_WARN, 
-                    "Unexpected record type, probably diagnostic %s",
-                    cl->database->database->url);
-            continue;
-        }
-
-        rec = ingest_record(cl, npr->u.databaseRecord, cl->records);
-        if (!rec)
-            continue;
+        cl->hits = 0;
+        client_set_state(cl, Client_Error);
+        yaz_log(YLOG_WARN, "Search error %s (%s): %s",
+                error, addinfo, client_get_url(cl));
+    }
+    else
+    {
+        cl->record_offset = cl->startrecs;
+        cl->hits = ZOOM_resultset_size(resultset);
+        if (se)
+            se->total_hits += cl->hits;
     }
-    if (rlist->num_records)
-        session_alert_watch(s, SESSION_WATCH_SHOW);
-    if (rlist->num_records)
-        session_alert_watch(s, SESSION_WATCH_RECORD);
-
-#if USE_TIMING
-    yaz_timing_stop(t);
-    yaz_log(YLOG_LOG, "ingest_records %6.5f %3.2f %3.2f", 
-            yaz_timing_get_real(t), yaz_timing_get_user(t),
-            yaz_timing_get_sys(t));
-    yaz_timing_destroy(&t);
-#endif
 }
 
-
-void client_search_response(struct client *cl, Z_APDU *a)
+void client_got_records(struct client *cl)
 {
     struct session *se = cl->session;
-    Z_SearchResponse *r = a->u.searchResponse;
-
-    yaz_log(YLOG_DEBUG, "Search response %s (status=%d)", 
-            cl->database->database->url, *r->searchStatus);
-
-    if (*r->searchStatus)
+    if (se)
     {
-	cl->hits = *r->resultCount;
-        if (cl->hits < 0)
-        {
-            yaz_log(YLOG_WARN, "Target %s returns hit count %d",
-                    cl->database->database->url, cl->hits);
-        }
-        else
-            se->total_hits += cl->hits;
-        if (r->presentStatus && !*r->presentStatus && r->records)
-        {
-            yaz_log(YLOG_DEBUG, "Records in search response %s", 
-                    cl->database->database->url);
-            ingest_records(cl, r->records);
-        }
-        cl->state = Client_Continue;
-    }
-    else
-    {          /*"FAILED"*/
-        Z_Records *recs = r->records;
-	cl->hits = 0;
-        cl->state = Client_Error;
-        if (recs && recs->which == Z_Records_NSD)
-        {
-            WRBUF w = wrbuf_alloc();
-
-            Z_DiagRec dr, *dr_p = &dr;
-            dr.which = Z_DiagRec_defaultFormat;
-            dr.u.defaultFormat = recs->u.nonSurrogateDiagnostic;
-            
-            wrbuf_printf(w, "Search response NSD %s: ",
-                         cl->database->database->url);
-            
-            cl->diagnostic = diag_to_wrbuf(&dr_p, 1, w);
-
-            yaz_log(YLOG_WARN, "%s", wrbuf_cstr(w));
-
-            cl->state = Client_Error;
-            wrbuf_destroy(w);
-        }
-        else if (recs && recs->which == Z_Records_multipleNSD)
-        {
-            WRBUF w = wrbuf_alloc();
-
-            wrbuf_printf(w, "Search response multipleNSD %s: ",
-                         cl->database->database->url);
-            cl->diagnostic = 
-                diag_to_wrbuf(recs->u.multipleNonSurDiagnostics->diagRecs,
-                              recs->u.multipleNonSurDiagnostics->num_diagRecs,
-                              w);
-            yaz_log(YLOG_WARN, "%s", wrbuf_cstr(w));
-            cl->state = Client_Error;
-            wrbuf_destroy(w);
-        }
+        client_unlock(cl);
+        session_alert_watch(se, SESSION_WATCH_SHOW);
+        session_alert_watch(se, SESSION_WATCH_RECORD);
+        client_lock(cl);
     }
 }
 
-void client_present_response(struct client *cl, Z_APDU *a)
+void client_record_response(struct client *cl)
 {
-    Z_PresentResponse *r = a->u.presentResponse;
-    Z_Records *recs = r->records;
-        
-    if (recs && recs->which == Z_Records_NSD)
-    {
-        WRBUF w = wrbuf_alloc();
-        
-        Z_DiagRec dr, *dr_p = &dr;
-        dr.which = Z_DiagRec_defaultFormat;
-        dr.u.defaultFormat = recs->u.nonSurrogateDiagnostic;
-        
-        wrbuf_printf(w, "Present response NSD %s: ",
-                     cl->database->database->url);
-        
-        cl->diagnostic = diag_to_wrbuf(&dr_p, 1, w);
-        
-        yaz_log(YLOG_WARN, "%s", wrbuf_cstr(w));
-        
-        cl->state = Client_Error;
-        wrbuf_destroy(w);
+    struct connection *co = cl->connection;
+    ZOOM_connection link = connection_get_link(co);
+    ZOOM_resultset resultset = cl->resultset;
+    const char *error, *addinfo;
 
-        client_show_raw_error(cl, "non surrogate diagnostics");
-    }
-    else if (recs && recs->which == Z_Records_multipleNSD)
+    if (ZOOM_connection_error(link, &error, &addinfo))
     {
-        WRBUF w = wrbuf_alloc();
-        
-        wrbuf_printf(w, "Present response multipleNSD %s: ",
-                     cl->database->database->url);
-        cl->diagnostic = 
-            diag_to_wrbuf(recs->u.multipleNonSurDiagnostics->diagRecs,
-                          recs->u.multipleNonSurDiagnostics->num_diagRecs,
-                          w);
-        yaz_log(YLOG_WARN, "%s", wrbuf_cstr(w));
-        cl->state = Client_Error;
-        wrbuf_destroy(w);
+        client_set_state(cl, Client_Error);
+        yaz_log(YLOG_WARN, "Search error %s (%s): %s",
+            error, addinfo, client_get_url(cl));
     }
-    else if (recs && !*r->presentStatus && cl->state != Client_Error)
+    else
     {
-        yaz_log(YLOG_DEBUG, "Good Present response %s",
-                cl->database->database->url);
-
-        // we can mix show raw and normal show ..
+        ZOOM_record rec = 0;
+        const char *msg, *addinfo;
+        
         if (cl->show_raw && cl->show_raw->active)
         {
-            cl->show_raw->active = 0; // no longer active
-            ingest_raw_records(cl, recs);
+            if ((rec = ZOOM_resultset_record(resultset,
+                                             cl->show_raw->position-1)))
+            {
+                cl->show_raw->active = 0;
+                ingest_raw_record(cl, rec);
+            }
+            else
+            {
+                yaz_log(YLOG_WARN, "Expected record, but got NULL, offset=%d",
+                        cl->show_raw->position-1);
+            }
         }
         else
-            ingest_records(cl, recs);
-        cl->state = Client_Continue;
-    }
-    else if (*r->presentStatus) 
-    {
-        yaz_log(YLOG_WARN, "Bad Present response %s",
-                cl->database->database->url);
-        cl->state = Client_Error;
-        client_show_raw_error(cl, "bad present response");
+        {
+            int offset = cl->record_offset;
+            if ((rec = ZOOM_resultset_record(resultset, offset)))
+            {
+                cl->record_offset++;
+                if (cl->session == 0)
+                    ;
+                else if (ZOOM_record_error(rec, &msg, &addinfo, 0))
+                {
+                    yaz_log(YLOG_WARN, "Record error %s (%s): %s (rec #%d)",
+                            msg, addinfo, client_get_url(cl),
+                            cl->record_offset);
+                }
+                else
+                {
+                    struct session_database *sdb = client_get_database(cl);
+                    NMEM nmem = nmem_create();
+                    const char *xmlrec;
+                    char type[80];
+
+                    if (nativesyntax_to_type(sdb, type, rec))
+                        yaz_log(YLOG_WARN, "Failed to determine record type");
+                    xmlrec = ZOOM_record_get(rec, type, NULL);
+                    if (!xmlrec)
+                        yaz_log(YLOG_WARN, "ZOOM_record_get failed from %s",
+                                client_get_url(cl));
+                    else
+                    {
+                        if (ingest_record(cl, xmlrec, cl->record_offset, nmem))
+                            yaz_log(YLOG_WARN, "Failed to ingest from %s",
+                                    client_get_url(cl));
+                    }
+                    nmem_destroy(nmem);
+                }
+            }
+            else
+            {
+                yaz_log(YLOG_WARN, "Expected record, but got NULL, offset=%d",
+                        offset);
+            }
+        }
     }
 }
 
-void client_close_response(struct client *cl, Z_APDU *a)
-{
-    struct connection *co = cl->connection;
-    /* Z_Close *r = a->u.close; */
-
-    yaz_log(YLOG_WARN, "Close response %s", cl->database->database->url);
-
-    cl->state = Client_Failed;
-    connection_destroy(co);
-}
-
-int client_is_our_response(struct client *cl)
-{
-    struct session *se = client_get_session(cl);
-
-    if (cl && (cl->requestid == se->requestid || 
-               cl->state == Client_Initializing))
-        return 1;
-    return 0;
-}
-
-// Set authentication token in init if one is set for the client
-// TODO: Extend this to handle other schemes than open (should be simple)
-static void init_authentication(struct client *cl, Z_InitRequest *req)
+void client_start_search(struct client *cl)
 {
     struct session_database *sdb = client_get_database(cl);
-    const char *auth = session_setting_oneval(sdb, PZ_AUTHENTICATION);
-
-    if (*auth)
+    struct connection *co = client_get_connection(cl);
+    ZOOM_connection link = connection_get_link(co);
+    ZOOM_resultset rs;
+    char *databaseName = sdb->database->databases[0];
+    const char *opt_piggyback = session_setting_oneval(sdb, PZ_PIGGYBACK);
+    const char *opt_queryenc = session_setting_oneval(sdb, PZ_QUERYENCODING);
+    const char *opt_elements = session_setting_oneval(sdb, PZ_ELEMENTS);
+    const char *opt_requestsyn = session_setting_oneval(sdb, PZ_REQUESTSYNTAX);
+    const char *opt_maxrecs = session_setting_oneval(sdb, PZ_MAXRECS);
+    const char *opt_sru = session_setting_oneval(sdb, PZ_SRU);
+    const char *opt_sort = session_setting_oneval(sdb, PZ_SORT);
+    char maxrecs_str[24], startrecs_str[24];
+
+    assert(link);
+
+    cl->hits = -1;
+    cl->record_offset = 0;
+    cl->diagnostic = 0;
+    client_set_state(cl, Client_Working);
+
+    if (*opt_piggyback)
+        ZOOM_connection_option_set(link, "piggyback", opt_piggyback);
+    else
+        ZOOM_connection_option_set(link, "piggyback", "1");
+    if (*opt_queryenc)
+        ZOOM_connection_option_set(link, "rpnCharset", opt_queryenc);
+    if (*opt_sru && *opt_elements)
+        ZOOM_connection_option_set(link, "schema", opt_elements);
+    else if (*opt_elements)
+        ZOOM_connection_option_set(link, "elementSetName", opt_elements);
+    if (*opt_requestsyn)
+        ZOOM_connection_option_set(link, "preferredRecordSyntax", opt_requestsyn);
+
+    if (!*opt_maxrecs)
     {
-        struct connection *co = client_get_connection(cl);
-        struct session *se = client_get_session(cl);
-        Z_IdAuthentication *idAuth = odr_malloc(global_parameters.odr_out,
-                sizeof(*idAuth));
-        idAuth->which = Z_IdAuthentication_open;
-        idAuth->u.open = odr_strdup(global_parameters.odr_out, auth);
-        req->idAuthentication = idAuth;
-        connection_set_authentication(co, nmem_strdup(se->session_nmem, auth));
+        sprintf(maxrecs_str, "%d", cl->maxrecs);
+        opt_maxrecs = maxrecs_str;
     }
-}
-
-static void init_zproxy(struct client *cl, Z_InitRequest *req)
-{
-    struct session_database *sdb = client_get_database(cl);
-    char *ztarget = sdb->database->url;
-    //char *ztarget = sdb->url;    
-    const char *zproxy = session_setting_oneval(sdb, PZ_ZPROXY);
-    
-    if (*zproxy)
-        yaz_oi_set_string_oid(&req->otherInfo,
-                              global_parameters.odr_out,
-                              yaz_oid_userinfo_proxy,
-                              1, ztarget);
-}
-
+    ZOOM_connection_option_set(link, "count", opt_maxrecs);
 
-static void client_init_request(struct client *cl)
-{
-    Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_initRequest);
 
-    a->u.initRequest->implementationId = global_parameters.implementationId;
-    a->u.initRequest->implementationName = global_parameters.implementationName;
-    a->u.initRequest->implementationVersion =
-	global_parameters.implementationVersion;
-    ODR_MASK_SET(a->u.initRequest->options, Z_Options_search);
-    ODR_MASK_SET(a->u.initRequest->options, Z_Options_present);
-    ODR_MASK_SET(a->u.initRequest->options, Z_Options_namedResultSets);
+    if (atoi(opt_maxrecs) > 20)
+        ZOOM_connection_option_set(link, "presentChunk", "20");
+    else
+        ZOOM_connection_option_set(link, "presentChunk", opt_maxrecs);
 
-    ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_1);
-    ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_2);
-    ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_3);
+    sprintf(startrecs_str, "%d", cl->startrecs);
+    ZOOM_connection_option_set(link, "start", startrecs_str);
 
-    init_authentication(cl, a->u.initRequest);
-    init_zproxy(cl, a->u.initRequest);
+    if (databaseName)
+        ZOOM_connection_option_set(link, "databaseName", databaseName);
 
-    if (send_apdu(cl, a) >= 0)
-	client_set_state(cl, Client_Initializing);
-    else
-        client_set_state(cl, Client_Error);
-    odr_reset(global_parameters.odr_out);
-}
-
-void client_continue(struct client *cl)
-{
-    if (cl->state == Client_Connected) {
-        client_init_request(cl);
+    if (cl->cqlquery)
+    {
+        ZOOM_query q = ZOOM_query_create();
+        yaz_log(YLOG_LOG, "Search %s CQL: %s", sdb->database->url, cl->cqlquery);
+        ZOOM_query_cql(q, cl->cqlquery);
+	if (*opt_sort)
+	    ZOOM_query_sortby(q, opt_sort);
+        rs = ZOOM_connection_search(link, q);
+        ZOOM_query_destroy(q);
     }
-    if (cl->state == Client_Continue || cl->state == Client_Idle)
+    else
     {
-        struct session *se = client_get_session(cl);
-        if (cl->requestid != se->requestid && cl->pquery) {
-            // we'll have to abort this because result set is to be deleted
-            client_show_raw_cancel(cl);   
-            client_send_search(cl);
-        }
-        else if (cl->show_raw)
-        {
-            client_send_raw_present(cl);
-        }
-        else if (cl->hits > 0 && cl->records < global_parameters.toget &&
-            cl->records < cl->hits) {
-            client_send_present(cl);
-        }
-        else
-            client_set_state(cl, Client_Idle);
+        yaz_log(YLOG_LOG, "Search %s PQF: %s", sdb->database->url, cl->pquery);
+        rs = ZOOM_connection_search_pqf(link, cl->pquery);
     }
+    ZOOM_resultset_destroy(cl->resultset);
+    cl->resultset = rs;
+    connection_continue(co);
 }
 
 struct client *client_create(void)
 {
-    struct client *r;
-    if (client_freelist)
-    {
-        r = client_freelist;
-        client_freelist = client_freelist->next;
-    }
-    else
-        r = xmalloc(sizeof(struct client));
+    struct client *r = xmalloc(sizeof(*r));
+    r->maxrecs = 100;
+    r->startrecs = 0;
     r->pquery = 0;
+    r->cqlquery = 0;
     r->database = 0;
     r->connection = 0;
     r->session = 0;
     r->hits = 0;
-    r->records = 0;
-    r->setno = 0;
-    r->requestid = -1;
+    r->record_offset = 0;
     r->diagnostic = 0;
     r->state = Client_Disconnected;
     r->show_raw = 0;
-    r->next = 0;
+    r->resultset = 0;
+    r->mutex = 0;
+    pazpar2_mutex_create(&r->mutex, "client");
+
+    r->ref_count = 1;
+    client_use(1);
+    
     return r;
 }
 
-void client_destroy(struct client *c)
+void client_lock(struct client *c)
 {
-    struct session *se = c->session;
-    if (c == se->clients)
-        se->clients = c->next;
-    else
+    yaz_mutex_enter(c->mutex);
+}
+
+void client_unlock(struct client *c)
+{
+    yaz_mutex_leave(c->mutex);
+}
+
+void client_incref(struct client *c)
+{
+    pazpar2_incref(&c->ref_count, c->mutex);
+    yaz_log(YLOG_LOG, "client_incref c=%p %s cnt=%d",
+            c, client_get_url(c), c->ref_count);
+}
+
+int client_destroy(struct client *c)
+{
+    if (c)
     {
-        struct client *cc;
-        for (cc = se->clients; cc && cc->next != c; cc = cc->next)
-            ;
-        if (cc)
-            cc->next = c->next;
+        yaz_log(YLOG_LOG, "client_destroy c=%p %s cnt=%d",
+                c, client_get_url(c), c->ref_count);
+        if (!pazpar2_decref(&c->ref_count, c->mutex))
+        {
+            xfree(c->pquery);
+            c->pquery = 0;
+            xfree(c->cqlquery);
+            c->cqlquery = 0;
+            assert(!c->connection);
+            assert(!c->resultset);
+            
+            yaz_mutex_destroy(&c->mutex);
+            xfree(c);
+            client_use(-1);
+            return 1;
+        }
     }
-    xfree(c->pquery);
-
-    if (c->connection)
-        connection_release(c->connection);
-    c->next = client_freelist;
-    client_freelist = c;
+    return 0;
 }
 
 void client_set_connection(struct client *cl, struct connection *con)
 {
-    cl->connection = con;
+    if (cl->resultset)
+    {
+        ZOOM_resultset_destroy(cl->resultset);
+        cl->resultset = 0;
+    }
+    if (con)
+    {
+        assert(cl->connection == 0);
+        cl->connection = con;
+        client_incref(cl);
+    }
+    else
+    {
+        cl->connection = con;
+        client_destroy(cl);
+    }
 }
 
 void client_disconnect(struct client *cl)
 {
     if (cl->state != Client_Idle)
-        cl->state = Client_Disconnected;
+        client_set_state(cl, Client_Disconnected);
     client_set_connection(cl, 0);
 }
 
@@ -931,13 +728,44 @@ static CCL_bibset prepare_cclmap(struct client *cl)
     return res;
 }
 
+// returns a xmalloced CQL query corresponding to the pquery in client
+static char *make_cqlquery(struct client *cl)
+{
+    cql_transform_t cqlt = cql_transform_create();
+    Z_RPNQuery *zquery;
+    char *r;
+    WRBUF wrb = wrbuf_alloc();
+    int status;
+    ODR odr_out = odr_createmem(ODR_ENCODE);
+
+    zquery = p_query_rpn(odr_out, cl->pquery);
+    yaz_log(YLOG_LOG, "PQF: %s", cl->pquery);
+    if ((status = cql_transform_rpn2cql_wrbuf(cqlt, wrb, zquery)))
+    {
+        yaz_log(YLOG_WARN, "Failed to generate CQL query, code=%d", status);
+        r = 0;
+    }
+    else
+    {
+        r = xstrdup(wrbuf_cstr(wrb));
+    }     
+    wrbuf_destroy(wrb);
+    odr_destroy(odr_out);
+    cql_transform_close(cqlt);
+    return r;
+}
+
 // Parse the query given the settings specific to this client
 int client_parse_query(struct client *cl, const char *query)
 {
     struct session *se = client_get_session(cl);
+    struct session_database *sdb = client_get_database(cl);
     struct ccl_rpn_node *cn;
     int cerror, cpos;
     CCL_bibset ccl_map = prepare_cclmap(cl);
+    const char *sru = session_setting_oneval(sdb, PZ_SRU);
+    const char *pqf_prefix = session_setting_oneval(sdb, PZ_PQF_PREFIX);
+    const char *pqf_strftime = session_setting_oneval(sdb, PZ_PQF_STRFTIME);
 
     if (!ccl_map)
         return -1;
@@ -946,25 +774,58 @@ int client_parse_query(struct client *cl, const char *query)
     ccl_qual_rm(&ccl_map);
     if (!cn)
     {
-        cl->state = Client_Error;
-        yaz_log(YLOG_WARN, "Failed to parse query for %s",
-                         client_get_database(cl)->database->url);
+        client_set_state(cl, Client_Error);
+        yaz_log(YLOG_WARN, "Failed to parse CCL query %s for %s",
+                query,
+                client_get_database(cl)->database->url);
         return -1;
     }
     wrbuf_rewind(se->wrbuf);
-    ccl_pquery(se->wrbuf, cn);
+    if (*pqf_prefix)
+    {
+        wrbuf_puts(se->wrbuf, pqf_prefix);
+        wrbuf_puts(se->wrbuf, " ");
+    }
+    if (!pqf_strftime || !*pqf_strftime)
+        ccl_pquery(se->wrbuf, cn);
+    else
+    {
+        time_t cur_time = time(0);
+        struct tm *tm =  localtime(&cur_time);
+        char tmp_str[300];
+        const char *cp = tmp_str;
+
+        /* see man strftime(3) for things .. In particular %% gets converted
+         to %.. And That's our original query .. */
+        strftime(tmp_str, sizeof(tmp_str)-1, pqf_strftime, tm);
+        for (; *cp; cp++)
+        {
+            if (cp[0] == '%')
+                ccl_pquery(se->wrbuf, cn);
+            else
+                wrbuf_putc(se->wrbuf, cp[0]);
+        }
+    }
     xfree(cl->pquery);
     cl->pquery = xstrdup(wrbuf_cstr(se->wrbuf));
 
+    xfree(cl->cqlquery);
+    if (*sru)
+    {
+        if (!(cl->cqlquery = make_cqlquery(cl)))
+            return -1;
+    }
+    else
+        cl->cqlquery = 0;
+
     if (!se->relevance)
     {
         // Initialize relevance structure with query terms
         char *p[512];
         extract_terms(se->nmem, cn, p);
         se->relevance = relevance_create(
-            global_parameters.server->relevance_pct,
-            se->nmem, (const char **) p,
-            se->expected_maxrecs);
+            se->service->relevance_pct,
+            se->nmem, (const char **) p);
     }
 
     ccl_rpn_delete(cn);
@@ -974,38 +835,29 @@ int client_parse_query(struct client *cl, const char *query)
 void client_set_session(struct client *cl, struct session *se)
 {
     cl->session = se;
-    cl->next = se->clients;
-    se->clients = cl;
 }
 
 int client_is_active(struct client *cl)
 {
-    if (cl->connection && (cl->state == Client_Continue ||
-                           cl->state == Client_Connecting ||
-                           cl->state == Client_Connected ||
-                           cl->state == Client_Initializing ||
-                           cl->state == Client_Searching ||
-                           cl->state == Client_Presenting))
+    if (cl->connection && (cl->state == Client_Connecting ||
+                           cl->state == Client_Working))
         return 1;
     return 0;
 }
 
-struct client *client_next_in_session(struct client *cl)
+Odr_int client_get_hits(struct client *cl)
 {
-    if (cl)
-        return cl->next;
-    return 0;
-
+    return cl->hits;
 }
 
-int client_get_hits(struct client *cl)
+int client_get_num_records(struct client *cl)
 {
-    return cl->hits;
+    return cl->record_offset;
 }
 
-int client_get_num_records(struct client *cl)
+void client_set_diagnostic(struct client *cl, int diagnostic)
 {
-    return cl->records;
+    cl->diagnostic = diagnostic;
 }
 
 int client_get_diagnostic(struct client *cl)
@@ -1025,13 +877,28 @@ struct host *client_get_host(struct client *cl)
 
 const char *client_get_url(struct client *cl)
 {
-    return client_get_database(cl)->database->url;
+    if (cl->database)
+        return client_get_database(cl)->database->url;
+    else
+        return "NOURL";
+}
+
+void client_set_maxrecs(struct client *cl, int v)
+{
+    cl->maxrecs = v;
+}
+
+void client_set_startrecs(struct client *cl, int v)
+{
+    cl->startrecs = v;
 }
 
 /*
  * Local variables:
  * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
  * indent-tabs-mode: nil
  * End:
  * vim: shiftwidth=4 tabstop=8 expandtab
  */
+