Fixed bug that occurred when phrases had 0 hits.
[idzebra-moved-to-github.git] / index / zrpn.c
index a5617dc..766df2a 100644 (file)
@@ -1,10 +1,57 @@
 /*
- * Copyright (C) 1995-1998, Index Data I/S 
+ * Copyright (C) 1995-1999, Index Data
  * All rights reserved.
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: zrpn.c,v $
- * Revision 1.80  1998-06-23 15:33:34  adam
+ * Revision 1.94  1999-07-20 13:59:18  adam
+ * Fixed bug that occurred when phrases had 0 hits.
+ *
+ * Revision 1.93  1999/06/17 14:38:40  adam
+ * Bug fix: Scan SEGV'ed when getting unknown use attribute.
+ *
+ * Revision 1.92  1999/05/26 07:49:13  adam
+ * C++ compilation.
+ *
+ * Revision 1.91  1999/02/02 14:51:13  adam
+ * Updated WIN32 code specific sections. Changed header.
+ *
+ * Revision 1.90  1998/11/16 16:03:43  adam
+ * Moved loggin utilities to Yaz. Was implemented in file zlogs.c.
+ *
+ * Revision 1.89  1998/11/16 10:11:55  adam
+ * Added addtional info for error 114 - unsupported use attribute.
+ *
+ * Revision 1.88  1998/10/18 07:54:52  adam
+ * Additional info added for diagnostics 114 (Unsupported use attribute) and
+ * 121 (Unsupported attribute set).
+ *
+ * Revision 1.87  1998/09/28 11:19:12  adam
+ * Fix for Compiled ASN.1.
+ *
+ * Revision 1.86  1998/09/22 10:48:20  adam
+ * Minor changes in search API.
+ *
+ * Revision 1.85  1998/09/22 10:03:43  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 1.84  1998/09/18 12:41:00  adam
+ * Fixed bug with numerical relations.
+ *
+ * Revision 1.83  1998/09/02 13:53:19  adam
+ * Extra parameter decode added to search routines to implement
+ * persistent queries.
+ *
+ * Revision 1.82  1998/06/26 11:16:40  quinn
+ * Added support (un-optimised) for left and left/right truncation
+ *
+ * Revision 1.81  1998/06/24 12:16:14  adam
+ * Support for relations on text operands. Open range support in
+ * DFA module (i.e. [-j], [g-]).
+ *
+ * Revision 1.80  1998/06/23 15:33:34  adam
  * Added feature to specify sort criteria in query (type 7 specifies
  * sort flags).
  *
  */
 #include <stdio.h>
 #include <assert.h>
-#ifdef WINDOWS
+#ifdef WIN32
 #include <io.h>
 #else
 #include <unistd.h>
@@ -302,7 +349,7 @@ struct rpn_char_map_info {
 
 static const char **rpn_char_map_handler (void *vp, const char **from, int len)
 {
-    struct rpn_char_map_info *p = vp;
+    struct rpn_char_map_info *p = (struct rpn_char_map_info *) vp;
     return zebra_maps_input (p->zm, p->reg_type, from, len);
 }
 
@@ -421,8 +468,8 @@ static void add_isam_p (const char *name, const char *info,
         int *new_term_no;        
 #endif
         p->isam_p_size = 2*p->isam_p_size + 100;
-        new_isam_p_buf = xmalloc (sizeof(*new_isam_p_buf) *
-                                  p->isam_p_size);
+        new_isam_p_buf = (ISAM_P *) xmalloc (sizeof(*new_isam_p_buf) *
+                                            p->isam_p_size);
         if (p->isam_p_buf)
         {
             memcpy (new_isam_p_buf, p->isam_p_buf,
@@ -432,8 +479,8 @@ static void add_isam_p (const char *name, const char *info,
         p->isam_p_buf = new_isam_p_buf;
 
 #ifdef TERM_COUNT
-        new_term_no = xmalloc (sizeof(*new_term_no) *
-                                  p->isam_p_size);
+        new_term_no = (int *) xmalloc (sizeof(*new_term_no) *
+                                      p->isam_p_size);
         if (p->term_no)
         {
             memcpy (new_term_no, p->isam_p_buf,
@@ -455,7 +502,7 @@ static void add_isam_p (const char *name, const char *info,
 
 static int grep_handle (char *name, const char *info, void *p)
 {
-    add_isam_p (name, info, p);
+    add_isam_p (name, info, (struct grep_info *) p);
     return 0;
 }
 
@@ -482,6 +529,7 @@ static int term_pre (ZebraMaps zebra_maps, int reg_type, const char **src,
     return *s0;
 }
 
+/* term_100: handle term, where trunc=none (no operators at all) */
 static int term_100 (ZebraMaps zebra_maps, int reg_type,
                     const char **src, char *dst, int space_split,
                     char *dst_term)
@@ -514,6 +562,7 @@ static int term_100 (ZebraMaps zebra_maps, int reg_type,
     return i;
 }
 
+/* term_101: handle term, where trunc=Process # */
 static int term_101 (ZebraMaps zebra_maps, int reg_type,
                     const char **src, char *dst, int space_split,
                     char *dst_term)
@@ -555,7 +604,7 @@ static int term_101 (ZebraMaps zebra_maps, int reg_type,
     return i;
 }
 
-
+/* term_103: handle term, where trunc=re-2 (regular expressions) */
 static int term_103 (ZebraMaps zebra_maps, int reg_type, const char **src,
                     char *dst, int *errors, int space_split,
                     char *dst_term)
@@ -604,6 +653,7 @@ static int term_103 (ZebraMaps zebra_maps, int reg_type, const char **src,
     return i;
 }
 
+/* term_103: handle term, where trunc=re-1 (regular expressions) */
 static int term_102 (ZebraMaps zebra_maps, int reg_type, const char **src,
                     char *dst, int space_split, char *dst_term)
 {
@@ -640,7 +690,7 @@ static void gen_regular_rel (char *dst, int val, int islt)
         }
         else
         {
-            strcpy (dst, "((-");
+            strcpy (dst, "(-(");
             islt = 0;
         }
         val = -val;
@@ -720,20 +770,33 @@ static void gen_regular_rel (char *dst, int val, int islt)
     strcat (dst, "))");
 }
 
+void string_rel_add_char (char **term_p, const char *src, int *indx)
+{
+    if (src[*indx] == '\\')
+       *(*term_p)++ = src[(*indx)++];
+    *(*term_p)++ = src[(*indx)++];
+}
+
+/*
+ *   >  abc     ([b-].*|a[c-].*|ab[d-].*|abc.+)
+ *              ([^-a].*|a[^-b].*ab[^-c].*|abc.+)
+ *   >= abc     ([b-].*|a[c-].*|ab[c-].*)
+ *              ([^-a].*|a[^-b].*|ab[c-].*)
+ *   <  abc     ([-0].*|a[-a].*|ab[-b].*)
+ *              ([^a-].*|a[^b-].*|ab[^c-].*)
+ *   <= abc     ([-0].*|a[-a].*|ab[-b].*|abc)
+ *              ([^a-].*|a[^b-].*|ab[^c-].*|abc)
+ */
 static int string_relation (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
-                                const char **term_sub,
-                                char *term_dict,
-                                oid_value attributeSet,
-                                struct grep_info *grep_info,
-                                int *max_pos,
-                                int reg_type,
-                                char *term_dst)
+                           const char **term_sub, char *term_dict,
+                           oid_value attributeSet,
+                           int reg_type, int space_split, char *term_dst)
 {
     AttrType relation;
     int relation_value;
-    int term_value;
-    int r;
+    int i;
     char *term_tmp = term_dict + strlen(term_dict);
+    char term_component[256];
 
     attr_init (&relation, zapt, 2);
     relation_value = attr_find (&relation, NULL);
@@ -742,63 +805,153 @@ static int string_relation (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
     switch (relation_value)
     {
     case 1:
-        if (!term_100 (zh->zebra_maps, reg_type, term_sub, term_tmp, 1,
-                      term_dst))
+        if (!term_100 (zh->zebra_maps, reg_type, term_sub, term_component,
+                      space_split, term_dst))
             return 0;
-        term_value = atoi (term_tmp);
         logf (LOG_DEBUG, "Relation <");
-        gen_regular_rel (term_tmp, term_value-1, 1);
+       
+       *term_tmp++ = '(';
+       for (i = 0; term_component[i]; )
+       {
+           int j = 0;
+
+           if (i)
+               *term_tmp++ = '|';
+           while (j < i)
+               string_rel_add_char (&term_tmp, term_component, &j);
+
+           *term_tmp++ = '[';
+
+           *term_tmp++ = '^';
+           string_rel_add_char (&term_tmp, term_component, &i);
+           *term_tmp++ = '-';
+
+           *term_tmp++ = ']';
+           *term_tmp++ = '.';
+           *term_tmp++ = '*';
+       }
+       *term_tmp++ = ')';
+       *term_tmp = '\0';
         break;
     case 2:
-        if (!term_100 (zh->zebra_maps, reg_type, term_sub, term_tmp, 1,
-                      term_dst))
+        if (!term_100 (zh->zebra_maps, reg_type, term_sub, term_component,
+                      space_split, term_dst))
             return 0;
-        term_value = atoi (term_tmp);
         logf (LOG_DEBUG, "Relation <=");
-        gen_regular_rel (term_tmp, term_value, 1);
-        break;
-    case 4:
-        if (!term_100 (zh->zebra_maps, reg_type, term_sub, term_tmp, 1,
-                      term_dst))
-            return 0;
-        term_value = atoi (term_tmp);
-        logf (LOG_DEBUG, "Relation >=");
-        gen_regular_rel (term_tmp, term_value, 0);
+
+       *term_tmp++ = '(';
+       for (i = 0; term_component[i]; )
+       {
+           int j = 0;
+
+           while (j < i)
+               string_rel_add_char (&term_tmp, term_component, &j);
+           *term_tmp++ = '[';
+
+           *term_tmp++ = '^';
+           string_rel_add_char (&term_tmp, term_component, &i);
+           *term_tmp++ = '-';
+
+           *term_tmp++ = ']';
+           *term_tmp++ = '.';
+           *term_tmp++ = '*';
+
+           *term_tmp++ = '|';
+       }
+       for (i = 0; term_component[i]; )
+           string_rel_add_char (&term_tmp, term_component, &i);
+       *term_tmp++ = ')';
+       *term_tmp = '\0';
         break;
     case 5:
-        if (!term_100 (zh->zebra_maps, reg_type, term_sub, term_tmp, 1,
-                      term_dst))
+        if (!term_100 (zh->zebra_maps, reg_type, term_sub, term_component,
+                      space_split, term_dst))
             return 0;
-        term_value = atoi (term_tmp);
         logf (LOG_DEBUG, "Relation >");
-        gen_regular_rel (term_tmp, term_value+1, 0);
+
+       *term_tmp++ = '(';
+       for (i = 0; term_component[i];)
+       {
+           int j = 0;
+
+           while (j < i)
+               string_rel_add_char (&term_tmp, term_component, &j);
+           *term_tmp++ = '[';
+           
+           *term_tmp++ = '^';
+           *term_tmp++ = '-';
+           string_rel_add_char (&term_tmp, term_component, &i);
+
+           *term_tmp++ = ']';
+           *term_tmp++ = '.';
+           *term_tmp++ = '*';
+
+           *term_tmp++ = '|';
+       }
+       for (i = 0; term_component[i];)
+           string_rel_add_char (&term_tmp, term_component, &i);
+       *term_tmp++ = '.';
+       *term_tmp++ = '+';
+       *term_tmp++ = ')';
+       *term_tmp = '\0';
+        break;
+    case 4:
+        if (!term_100 (zh->zebra_maps, reg_type, term_sub, term_component,
+                      space_split, term_dst))
+            return 0;
+        logf (LOG_DEBUG, "Relation >=");
+
+       *term_tmp++ = '(';
+       for (i = 0; term_component[i];)
+       {
+           int j = 0;
+
+           if (i)
+               *term_tmp++ = '|';
+           while (j < i)
+               string_rel_add_char (&term_tmp, term_component, &j);
+           *term_tmp++ = '[';
+
+           if (term_component[i+1])
+           {
+               *term_tmp++ = '^';
+               *term_tmp++ = '-';
+               string_rel_add_char (&term_tmp, term_component, &i);
+           }
+           else
+           {
+               string_rel_add_char (&term_tmp, term_component, &i);
+               *term_tmp++ = '-';
+           }
+           *term_tmp++ = ']';
+           *term_tmp++ = '.';
+           *term_tmp++ = '*';
+       }
+       *term_tmp++ = ')';
+       *term_tmp = '\0';
         break;
     case 3:
     default:
         logf (LOG_DEBUG, "Relation =");
-       *term_tmp = '(';
-        if (!term_100 (zh->zebra_maps, reg_type, term_sub, term_tmp+1, 1,
-                      term_dst))
+        if (!term_100 (zh->zebra_maps, reg_type, term_sub, term_component,
+                      space_split, term_dst))
             return 0;
+       strcat (term_tmp, "(");
+       strcat (term_tmp, term_component);
        strcat (term_tmp, ")");
     }
-    logf (LOG_DEBUG, "dict_lookup_grep: %s", term_tmp);
-    r = dict_lookup_grep (zh->dict, term_dict, 0, grep_info, max_pos,
-                          0, grep_handle);
-    if (r)
-        logf (LOG_WARN, "dict_lookup_grep fail, rel=gt: %d", r);
-    logf (LOG_DEBUG, "%d positions", grep_info->isam_p_indx);
     return 1;
 }
 
 static int string_term (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
                        const char **term_sub, 
-                       oid_value attributeSet, struct grep_info *grep_info,
+                       oid_value attributeSet, NMEM stream,
+                       struct grep_info *grep_info,
                        int reg_type, int complete_flag,
                        int num_bases, char **basenames,
                        char *term_dst)
 {
-    char term_dict[2*IT_MAX_WORD+2];
+    char term_dict[2*IT_MAX_WORD+4000];
     int j, r, base_no;
     AttrType truncation;
     int truncation_value;
@@ -832,9 +985,25 @@ static int string_term (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
             logf (LOG_DEBUG, "att_getentbyatt fail. set=%d use=%d r=%d",
                   curAttributeSet, use_value, r);
            if (r == -1)
+           {
+               char val_str[32];
+               sprintf (val_str, "%d", use_value);
                zh->errCode = 114;
+               zh->errString = nmem_strdup (stream, val_str);
+           }
            else
+           {
+               int oid[OID_SIZE];
+               struct oident oident;
+
+               oident.proto = PROTO_Z3950;
+               oident.oclass = CLASS_ATTSET;
+               oident.value = curAttributeSet;
+               oid_ent_to_oid (&oident, oid);
+
                zh->errCode = 121;
+               zh->errString = nmem_strdup (stream, oident.desc);
+           }
             return -1;
         }
         if (zebraExplain_curDatabase (zh->zei, basenames[base_no]))
@@ -868,7 +1037,10 @@ static int string_term (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
         }
         if (!prefix_len)
         {
-            zh->errCode = 114;
+           char val_str[32];
+           sprintf (val_str, "%d", use_value);
+           zh->errCode = 114;
+           zh->errString = nmem_strdup (stream, val_str);
             return -1;
         }
         term_dict[prefix_len++] = ')';        
@@ -882,20 +1054,14 @@ static int string_term (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
        case -1:         /* not specified */
        case 100:        /* do not truncate */
            if (!string_relation (zh, zapt, &termp, term_dict,
-                                 attributeSet, grep_info, &max_pos,
-                                 reg_type, term_dst))
-               return 0;
-#if 0
-           term_dict[j++] = '(';   
-           if (!term_100 (zh->zebra_maps, reg_type,
-                          &termp, term_dict + j, space_split, term_dst))
+                                 attributeSet,
+                                 reg_type, space_split, term_dst))
                return 0;
-           strcat (term_dict, ")");
-           r = dict_lookup_grep (zh->dict, term_dict, 0, grep_info,
-                                 &max_pos, 0, grep_handle);
+           logf (LOG_DEBUG, "dict_lookup_grep: %s", term_dict+prefix_len);
+           r = dict_lookup_grep (zh->dict, term_dict, 0, grep_info, &max_pos,
+                                 0, grep_handle);
            if (r)
-               logf (LOG_WARN, "dict_lookup_grep err, trunc=none:%d", r);
-#endif
+               logf (LOG_WARN, "dict_lookup_grep fail, rel=gt: %d", r);
            break;
        case 1:          /* right truncation */
            term_dict[j++] = '(';
@@ -906,8 +1072,24 @@ static int string_term (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
            dict_lookup_grep (zh->dict, term_dict, 0, grep_info,
                              &max_pos, 0, grep_handle);
            break;
-       case 2:          /* left truncation */
+       case 2:          /* keft truncation */
+           term_dict[j++] = '('; term_dict[j++] = '.'; term_dict[j++] = '*';
+           if (!term_100 (zh->zebra_maps, reg_type,
+                          &termp, term_dict + j, space_split, term_dst))
+               return 0;
+           strcat (term_dict, ")");
+           dict_lookup_grep (zh->dict, term_dict, 0, grep_info,
+                             &max_pos, 0, grep_handle);
+           break;
        case 3:          /* left&right truncation */
+           term_dict[j++] = '('; term_dict[j++] = '.'; term_dict[j++] = '*';
+           if (!term_100 (zh->zebra_maps, reg_type,
+                          &termp, term_dict + j, space_split, term_dst))
+               return 0;
+           strcat (term_dict, ".*)");
+           dict_lookup_grep (zh->dict, term_dict, 0, grep_info,
+                             &max_pos, 0, grep_handle);
+           break;
            zh->errCode = 120;
            return -1;
        case 101:        /* process # in term */
@@ -1103,31 +1285,38 @@ static RSET rpn_prox (ZebraHandle zh, RSET *rset, int rset_no)
     int term_index;
     const char *flags = NULL;
     
-    rsfd = xmalloc (sizeof(*rsfd)*rset_no);
-    more = xmalloc (sizeof(*more)*rset_no);
-    buf = xmalloc (sizeof(*buf)*rset_no);
+    rsfd = (RSFD *) xmalloc (sizeof(*rsfd)*rset_no);
+    more = (int *) xmalloc (sizeof(*more)*rset_no);
+    buf = (struct it_key **) xmalloc (sizeof(*buf)*rset_no);
 
+    *prox_term = '\0';
     for (i = 0; i<rset_no; i++)
     {
        int j;
-       buf[i] = xmalloc (sizeof(**buf));
-       rsfd[i] = rset_open (rset[i], RSETF_READ);
-        if (!(more[i] = rset_read (rset[i], rsfd[i], buf[i], &term_index)))
-           break;
        for (j = 0; j<rset[i]->no_rset_terms; j++)
        {
            const char *nflags = rset[i]->rset_terms[j]->flags;
            char *term = rset[i]->rset_terms[j]->name;
            int lterm = strlen(term);
-           if (length_prox_term)
-               prox_term[length_prox_term++] = ' ';
-           strcpy (prox_term + length_prox_term, term);
-           length_prox_term += lterm;
+           if (lterm + length_prox_term < sizeof(prox_term)-1)
+           {
+               if (length_prox_term)
+                   prox_term[length_prox_term++] = ' ';
+               strcpy (prox_term + length_prox_term, term);
+               length_prox_term += lterm;
+           }
            if (min_nn > rset[i]->rset_terms[j]->nn)
                min_nn = rset[i]->rset_terms[j]->nn;
            flags = nflags;
        }
     }
+    for (i = 0; i<rset_no; i++)
+    {
+       buf[i] = (struct it_key *) xmalloc (sizeof(**buf));
+       rsfd[i] = rset_open (rset[i], RSETF_READ);
+        if (!(more[i] = rset_read (rset[i], rsfd[i], buf[i], &term_index)))
+           break;
+    }
     if (i != rset_no)
     {
        rset_null_parms parms;
@@ -1138,7 +1327,8 @@ static RSET rpn_prox (ZebraHandle zh, RSET *rset, int rset_no)
            xfree (buf[i]);
            --i;
        }
-       parms.rset_term = rset_term_create (prox_term, -1, flags);
+       parms.rset_term = rset_term_create (prox_term, length_prox_term,
+                                           flags);
        parms.rset_term->nn = 0;
        result = rset_create (rset_kind_null, &parms);
     }
@@ -1147,7 +1337,8 @@ static RSET rpn_prox (ZebraHandle zh, RSET *rset, int rset_no)
        rset_temp_parms parms;
        RSFD rsfd_result;
 
-       parms.rset_term = rset_term_create (prox_term, -1, flags);
+       parms.rset_term = rset_term_create (prox_term, length_prox_term,
+                                           flags);
        parms.rset_term->nn = min_nn;
        parms.key_size = sizeof (struct it_key);
        parms.temp_path = res_get (zh->res, "setTmpDir");
@@ -1212,6 +1403,7 @@ static RSET rpn_search_APT_phrase (ZebraHandle zh,
                                    Z_AttributesPlusTerm *zapt,
                                   const char *termz,
                                    oid_value attributeSet,
+                                  NMEM stream,
                                   int reg_type, int complete_flag,
                                   const char *rank_type,
                                   int num_bases, char **basenames)
@@ -1234,7 +1426,7 @@ static RSET rpn_search_APT_phrase (ZebraHandle zh,
     { 
        logf (LOG_DEBUG, "APT_phrase termp=%s", termp);
        grep_info.isam_p_indx = 0;
-        r = string_term (zh, zapt, &termp, attributeSet, &grep_info,
+        r = string_term (zh, zapt, &termp, attributeSet, stream, &grep_info,
                        reg_type, complete_flag, num_bases, basenames,
                        term_dst);
         if (r < 1)
@@ -1244,7 +1436,7 @@ static RSET rpn_search_APT_phrase (ZebraHandle zh,
                                     grep_info.isam_p_indx, term_dst,
                                    strlen(term_dst), rank_type);
         assert (rset[rset_no]);
-        if (++rset_no >= sizeof(rset)/sizeof(*rset))
+        if (++rset_no >= (int) (sizeof(rset)/sizeof(*rset)))
             break;
     }
 #ifdef TERM_COUNT
@@ -1270,6 +1462,7 @@ static RSET rpn_search_APT_or_list (ZebraHandle zh,
                                     Z_AttributesPlusTerm *zapt,
                                    const char *termz,
                                     oid_value attributeSet,
+                                   NMEM stream,
                                    int reg_type, int complete_flag,
                                    const char *rank_type,
                                    int num_bases, char **basenames)
@@ -1292,7 +1485,7 @@ static RSET rpn_search_APT_or_list (ZebraHandle zh,
     { 
        logf (LOG_DEBUG, "APT_or_list termp=%s", termp);
        grep_info.isam_p_indx = 0;
-        r = string_term (zh, zapt, &termp, attributeSet, &grep_info,
+        r = string_term (zh, zapt, &termp, attributeSet, stream, &grep_info,
                        reg_type, complete_flag, num_bases, basenames,
                        term_dst);
         if (r < 1)
@@ -1302,7 +1495,7 @@ static RSET rpn_search_APT_or_list (ZebraHandle zh,
                                     grep_info.isam_p_indx, term_dst,
                                    strlen(term_dst), rank_type);
         assert (rset[rset_no]);
-        if (++rset_no >= sizeof(rset)/sizeof(*rset))
+        if (++rset_no >= (int) (sizeof(rset)/sizeof(*rset)))
             break;
     }
 #ifdef TERM_COUNT
@@ -1334,6 +1527,7 @@ static RSET rpn_search_APT_and_list (ZebraHandle zh,
                                      Z_AttributesPlusTerm *zapt,
                                     const char *termz,
                                      oid_value attributeSet,
+                                    NMEM stream,
                                     int reg_type, int complete_flag,
                                     const char *rank_type,
                                     int num_bases, char **basenames)
@@ -1356,7 +1550,7 @@ static RSET rpn_search_APT_and_list (ZebraHandle zh,
     { 
        logf (LOG_DEBUG, "APT_and_list termp=%s", termp);
        grep_info.isam_p_indx = 0;
-        r = string_term (zh, zapt, &termp, attributeSet, &grep_info,
+        r = string_term (zh, zapt, &termp, attributeSet, stream, &grep_info,
                        reg_type, complete_flag, num_bases, basenames,
                        term_dst);
         if (r < 1)
@@ -1366,7 +1560,7 @@ static RSET rpn_search_APT_and_list (ZebraHandle zh,
                                     grep_info.isam_p_indx, term_dst,
                                    strlen(term_dst), rank_type);
         assert (rset[rset_no]);
-        if (++rset_no >= sizeof(rset)/sizeof(*rset))
+        if (++rset_no >= (int) (sizeof(rset)/sizeof(*rset)))
             break;
     }
 #ifdef TERM_COUNT
@@ -1543,6 +1737,7 @@ static RSET rpn_search_APT_numeric (ZebraHandle zh,
                                    Z_AttributesPlusTerm *zapt,
                                    const char *termz,
                                    oid_value attributeSet,
+                                   NMEM stream,
                                    int reg_type, int complete_flag,
                                    const char *rank_type,
                                    int num_bases, char **basenames)
@@ -1575,7 +1770,7 @@ static RSET rpn_search_APT_numeric (ZebraHandle zh,
                                     grep_info.isam_p_indx, term_dst,
                                    strlen(term_dst), rank_type);
         assert (rset[rset_no]);
-        if (++rset_no >= sizeof(rset)/sizeof(*rset))
+        if (++rset_no >= (int) (sizeof(rset)/sizeof(*rset)))
             break;
     }
 #ifdef TERM_COUNT
@@ -1606,6 +1801,7 @@ static RSET rpn_search_APT_numeric (ZebraHandle zh,
 static RSET rpn_search_APT_local (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
                                  const char *termz,
                                   oid_value attributeSet,
+                                 NMEM stream,
                                  const char *rank_type)
 {
     RSET result;
@@ -1629,7 +1825,7 @@ static RSET rpn_search_APT_local (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
 }
 
 static RSET rpn_sort_spec (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
-                          oid_value attributeSet, ODR stream,
+                          oid_value attributeSet, NMEM stream,
                           Z_SortKeySpecList *sort_sequence,
                           const char *rank_type)
 {
@@ -1654,15 +1850,17 @@ static RSET rpn_sort_spec (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
     if (!sort_sequence->specs)
     {
        sort_sequence->num_specs = 10;
-       sort_sequence->specs = odr_malloc (stream, sort_sequence->num_specs *
-                                          sizeof(*sort_sequence->specs));
+       sort_sequence->specs = (Z_SortKeySpec **)
+           nmem_malloc (stream, sort_sequence->num_specs *
+                        sizeof(*sort_sequence->specs));
        for (i = 0; i<sort_sequence->num_specs; i++)
            sort_sequence->specs[i] = 0;
     }
     if (zapt->term->which != Z_Term_general)
        i = 0;
     else
-       i = atoi_n (zapt->term->u.general->buf, zapt->term->u.general->len);
+       i = atoi_n ((char *) zapt->term->u.general->buf,
+                   zapt->term->u.general->len);
     if (i >= sort_sequence->num_specs)
        i = 0;
 
@@ -1672,29 +1870,35 @@ static RSET rpn_sort_spec (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
     if (!oid_ent_to_oid (&oe, oid))
        return 0;
 
-    sks = odr_malloc (stream, sizeof(*sks));
-    sks->sortElement = odr_malloc (stream, sizeof(*sks->sortElement));
+    sks = (Z_SortKeySpec *) nmem_malloc (stream, sizeof(*sks));
+    sks->sortElement = (Z_SortElement *)
+       nmem_malloc (stream, sizeof(*sks->sortElement));
     sks->sortElement->which = Z_SortElement_generic;
-    sk = sks->sortElement->u.generic = odr_malloc (stream, sizeof(*sk));
+    sk = sks->sortElement->u.generic = (Z_SortKey *)
+       nmem_malloc (stream, sizeof(*sk));
     sk->which = Z_SortKey_sortAttributes;
-    sk->u.sortAttributes = odr_malloc (stream, sizeof(*sk->u.sortAttributes));
+    sk->u.sortAttributes = (Z_SortAttributes *)
+       nmem_malloc (stream, sizeof(*sk->u.sortAttributes));
 
     sk->u.sortAttributes->id = oid;
-    sk->u.sortAttributes->list =
-       odr_malloc (stream, sizeof(*sk->u.sortAttributes->list));
+    sk->u.sortAttributes->list = (Z_AttributeList *)
+       nmem_malloc (stream, sizeof(*sk->u.sortAttributes->list));
     sk->u.sortAttributes->list->num_attributes = 1;
-    sk->u.sortAttributes->list->attributes =
-       odr_malloc (stream, sizeof(*sk->u.sortAttributes->list->attributes));
-    ae = *sk->u.sortAttributes->list->attributes =
-       odr_malloc (stream, sizeof(**sk->u.sortAttributes->list->attributes));
+    sk->u.sortAttributes->list->attributes = (Z_AttributeElement **)
+       nmem_malloc (stream, sizeof(*sk->u.sortAttributes->list->attributes));
+    ae = *sk->u.sortAttributes->list->attributes = (Z_AttributeElement *)
+       nmem_malloc (stream, sizeof(**sk->u.sortAttributes->list->attributes));
     ae->attributeSet = 0;
-    ae->attributeType =        odr_malloc (stream, sizeof(*ae->attributeType));
+    ae->attributeType =        (int *)
+       nmem_malloc (stream, sizeof(*ae->attributeType));
     *ae->attributeType = 1;
     ae->which = Z_AttributeValue_numeric;
-    ae->value.numeric = odr_malloc (stream, sizeof(*ae->value.numeric));
+    ae->value.numeric = (int *)
+       nmem_malloc (stream, sizeof(*ae->value.numeric));
     *ae->value.numeric = use_value;
 
-    sks->sortRelation = odr_malloc (stream, sizeof(*sks->sortRelation));
+    sks->sortRelation = (int *)
+       nmem_malloc (stream, sizeof(*sks->sortRelation));
     if (sort_relation_value == 1)
        *sks->sortRelation = Z_SortRelation_ascending;
     else if (sort_relation_value == 2)
@@ -1702,10 +1906,16 @@ static RSET rpn_sort_spec (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
     else 
        *sks->sortRelation = Z_SortRelation_ascending;
 
-    sks->caseSensitivity = odr_malloc (stream, sizeof(*sks->caseSensitivity));
+    sks->caseSensitivity = (int *)
+       nmem_malloc (stream, sizeof(*sks->caseSensitivity));
     *sks->caseSensitivity = 0;
 
+#ifdef ASN_COMPILED
+    sks->which = Z_SortKeySpec_null;
+    sks->u.null = odr_nullval ();
+#else
     sks->missingValueAction = 0;
+#endif
 
     sort_sequence->specs[i] = sks;
 
@@ -1715,7 +1925,7 @@ static RSET rpn_sort_spec (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
 
 
 static RSET rpn_search_APT (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
-                            oid_value attributeSet, ODR stream,
+                            oid_value attributeSet, NMEM stream,
                            Z_SortKeySpecList *sort_sequence,
                             int num_bases, char **basenames)
 {
@@ -1747,30 +1957,30 @@ static RSET rpn_search_APT (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
 
     if (!strcmp (search_type, "phrase"))
     {
-       return rpn_search_APT_phrase (zh, zapt, termz, attributeSet,
+       return rpn_search_APT_phrase (zh, zapt, termz, attributeSet, stream,
                                      reg_id, complete_flag, rank_type,
                                      num_bases, basenames);
     }
     else if (!strcmp (search_type, "and-list"))
     {
-       return rpn_search_APT_and_list (zh, zapt, termz, attributeSet,
+       return rpn_search_APT_and_list (zh, zapt, termz, attributeSet, stream,
                                        reg_id, complete_flag, rank_type,
                                        num_bases, basenames);
     }
     else if (!strcmp (search_type, "or-list"))
     {
-       return rpn_search_APT_or_list (zh, zapt, termz, attributeSet,
+       return rpn_search_APT_or_list (zh, zapt, termz, attributeSet, stream,
                                       reg_id, complete_flag, rank_type,
                                       num_bases, basenames);
     }
     else if (!strcmp (search_type, "local"))
     {
-        return rpn_search_APT_local (zh, zapt, termz, attributeSet,
+        return rpn_search_APT_local (zh, zapt, termz, attributeSet, stream,
                                     rank_type);
     }
     else if (!strcmp (search_type, "numeric"))
     {
-       return rpn_search_APT_numeric (zh, zapt, termz, attributeSet,
+       return rpn_search_APT_numeric (zh, zapt, termz, attributeSet, stream,
                                       reg_id, complete_flag, rank_type,
                                       num_bases, basenames);
     }
@@ -1779,7 +1989,7 @@ static RSET rpn_search_APT (ZebraHandle zh, Z_AttributesPlusTerm *zapt,
 }
 
 static RSET rpn_search_structure (ZebraHandle zh, Z_RPNStructure *zs,
-                                  oid_value attributeSet, ODR stream,
+                                  oid_value attributeSet, NMEM stream,
                                  Z_SortKeySpecList *sort_sequence,
                                   int num_bases, char **basenames)
 {
@@ -1836,7 +2046,7 @@ static RSET rpn_search_structure (ZebraHandle zh, Z_RPNStructure *zs,
 #ifdef ASN_COMPILED
             if (*zop->u.prox->u.known != Z_ProxUnit_word)
             {
-                char *val = odr_malloc (stream, 16);
+                char *val = (char *) nmem_malloc (stream, 16);
                 zh->errCode = 132;
                 zh->errString = val;
                 sprintf (val, "%d", *zop->u.prox->u.known);
@@ -1845,7 +2055,7 @@ static RSET rpn_search_structure (ZebraHandle zh, Z_RPNStructure *zs,
 #else
             if (*zop->u.prox->proximityUnitCode != Z_ProxUnit_word)
             {
-                char *val = odr_malloc (stream, 16);
+                char *val = (char *) nmem_malloc (stream, 16);
                 zh->errCode = 132;
                 zh->errString = val;
                 sprintf (val, "%d", *zop->u.prox->proximityUnitCode);
@@ -1894,9 +2104,11 @@ static RSET rpn_search_structure (ZebraHandle zh, Z_RPNStructure *zs,
     return r;
 }
 
-void rpn_search (ZebraHandle zh, ODR stream,
+
+RSET rpn_search (ZebraHandle zh, NMEM nmem,
                 Z_RPNQuery *rpn, int num_bases, char **basenames, 
-                const char *setname)
+                const char *setname,
+                ZebraSet sset)
 {
     RSET rset;
     oident *attrset;
@@ -1904,37 +2116,45 @@ void rpn_search (ZebraHandle zh, ODR stream,
     Z_SortKeySpecList *sort_sequence;
     int sort_status, i;
 
-    zlog_rpn (rpn);
-
     zh->errCode = 0;
     zh->errString = NULL;
     zh->hits = 0;
 
-    sort_sequence = odr_malloc (stream, sizeof(*sort_sequence));
+    sort_sequence = (Z_SortKeySpecList *)
+       nmem_malloc (nmem, sizeof(*sort_sequence));
     sort_sequence->num_specs = 10;
-    sort_sequence->specs = odr_malloc (stream, sort_sequence->num_specs *
-                                      sizeof(*sort_sequence->specs));
+    sort_sequence->specs = (Z_SortKeySpec **)
+       nmem_malloc (nmem, sort_sequence->num_specs *
+                    sizeof(*sort_sequence->specs));
     for (i = 0; i<sort_sequence->num_specs; i++)
        sort_sequence->specs[i] = 0;
     
     attrset = oid_getentbyoid (rpn->attributeSetId);
     attributeSet = attrset->value;
-    rset = rpn_search_structure (zh, rpn->RPNStructure, attributeSet, stream,
-                                sort_sequence,
-                                 num_bases, basenames);
+    rset = rpn_search_structure (zh, rpn->RPNStructure, attributeSet,
+                                nmem, sort_sequence, num_bases, basenames);
     if (!rset)
-       return;
+       return 0;
 
-    resultSetAdd (zh, setname, 1, rset, &zh->hits);
     if (zh->errCode)
         logf (LOG_DEBUG, "search error: %d", zh->errCode);
-
+    
     for (i = 0; sort_sequence->specs[i]; i++)
        ;
     sort_sequence->num_specs = i;
-    if (i)
-       resultSetSort (zh, stream, 1, &setname, setname, sort_sequence,
-                      &sort_status);
+    if (!i)
+       resultSetRank (zh, sset, rset);
+    else
+    {
+       logf (LOG_DEBUG, "resultSetSortSingle in rpn_search");
+       resultSetSortSingle (zh, nmem, sset, rset,
+                            sort_sequence, &sort_status);
+       if (zh->errCode)
+       {
+           logf (LOG_DEBUG, "resultSetSortSingle status = %d", zh->errCode);
+       }
+    }
+    return rset;
 }
 
 struct scan_info_entry {
@@ -1952,31 +2172,30 @@ struct scan_info {
 static int scan_handle (char *name, const char *info, int pos, void *client)
 {
     int len_prefix, idx;
-    struct scan_info *scan_info = client;
+    struct scan_info *scan_info = (struct scan_info *) client;
 
     len_prefix = strlen(scan_info->prefix);
     if (memcmp (name, scan_info->prefix, len_prefix))
         return 1;
-    if (pos > 0)
-        idx = scan_info->after - pos + scan_info->before;
+    if (pos > 0)        idx = scan_info->after - pos + scan_info->before;
     else
         idx = - pos - 1;
-    scan_info->list[idx].term = odr_malloc (scan_info->odr,
-                                            strlen(name + len_prefix)+1);
+    scan_info->list[idx].term = (char *)
+       odr_malloc (scan_info->odr, strlen(name + len_prefix)+1);
     strcpy (scan_info->list[idx].term, name + len_prefix);
     assert (*info == sizeof(ISAM_P));
     memcpy (&scan_info->list[idx].isam_p, info+1, sizeof(ISAM_P));
     return 0;
 }
 
-static void scan_term_untrans (ZebraHandle zh, ODR stream, int reg_type,
+static void scan_term_untrans (ZebraHandle zh, NMEM stream, int reg_type,
                               char **dst, const char *src)
 {
     char term_dst[1024];
     
     term_untrans (zh, reg_type, term_dst, src);
     
-    *dst = odr_malloc (stream, strlen(term_dst)+1);
+    *dst = (char *) nmem_malloc (stream, strlen(term_dst)+1);
     strcpy (*dst, term_dst);
 }
 
@@ -2030,11 +2249,11 @@ void rpn_scan (ZebraHandle zh, ODR stream, Z_AttributesPlusTerm *zapt,
     char *rank_type = NULL;
     int complete_flag;
     int sort_flag;
+    *list = 0;
 
     if (attributeset == VAL_NONE)
         attributeset = VAL_BIB1;
 
-    zlog_scan (zapt, attributeset);
     logf (LOG_DEBUG, "position = %d, num = %d", pos, num);
         
     attr_init (&use, zapt, 1);
@@ -2063,6 +2282,8 @@ void rpn_scan (ZebraHandle zh, ODR stream, Z_AttributesPlusTerm *zapt,
                zh->errCode = 114;
            else
                zh->errCode = 121;
+           *num_entries = 0;
+           return;
         }
         if (zebraExplain_curDatabase (zh->zei, basenames[base_no]))
         {
@@ -2089,7 +2310,8 @@ void rpn_scan (ZebraHandle zh, ODR stream, Z_AttributesPlusTerm *zapt,
     /* prepare dictionary scanning */
     before = pos-1;
     after = 1+num-pos;
-    scan_info_array = odr_malloc (stream, ord_no * sizeof(*scan_info_array));
+    scan_info_array = (struct scan_info *)
+       odr_malloc (stream, ord_no * sizeof(*scan_info_array));
     for (i = 0; i < ord_no; i++)
     {
         int j, prefix_len = 0;
@@ -2103,8 +2325,8 @@ void rpn_scan (ZebraHandle zh, ODR stream, Z_AttributesPlusTerm *zapt,
         scan_info->after = after;
         scan_info->odr = stream;
 
-        scan_info->list = odr_malloc (stream, (before+after)*
-                                      sizeof(*scan_info->list));
+        scan_info->list = (struct scan_info_entry *)
+           odr_malloc (stream, (before+after) * sizeof(*scan_info->list));
         for (j = 0; j<before+after; j++)
             scan_info->list[j].term = NULL;
 
@@ -2118,7 +2340,8 @@ void rpn_scan (ZebraHandle zh, ODR stream, Z_AttributesPlusTerm *zapt,
         dict_scan (zh->dict, termz, &before_tmp, &after_tmp, scan_info,
                    scan_handle);
     }
-    glist = odr_malloc (stream, (before+after)*sizeof(*glist));
+    glist = (ZebraScanEntry *)
+       odr_malloc (stream, (before+after)*sizeof(*glist));
 
     /* consider terms after main term */
     for (i = 0; i < ord_no; i++)
@@ -2144,7 +2367,7 @@ void rpn_scan (ZebraHandle zh, ODR stream, Z_AttributesPlusTerm *zapt,
         }
         if (j0 == -1)
             break;
-        scan_term_untrans (zh, stream, reg_id,
+        scan_term_untrans (zh, stream->mem, reg_id,
                           &glist[i+before].term, mterm);
         rset = rset_trunc (zh, &scan_info_array[j0].list[ptr[j0]].isam_p, 1,
                           glist[i+before].term, strlen(glist[i+before].term),
@@ -2208,7 +2431,7 @@ void rpn_scan (ZebraHandle zh, ODR stream, Z_AttributesPlusTerm *zapt,
         if (j0 == -1)
             break;
 
-        scan_term_untrans (zh, stream, reg_id,
+        scan_term_untrans (zh, stream->mem, reg_id,
                           &glist[before-1-i].term, mterm);
 
         rset = rset_trunc