Zebra uses string attributes for indexing internally. Using set+numeric
[idzebra-moved-to-github.git] / recctrl / recgrs.c
index 99eb954..f45f4d7 100644 (file)
@@ -1,5 +1,5 @@
-/* $Id: recgrs.c,v 1.102 2005-06-23 06:45:47 adam Exp $
-   Copyright (C) 1995-2005
+/* $Id: recgrs.c,v 1.110 2006-05-19 13:49:35 adam Exp $
+   Copyright (C) 1995-2006
    Index Data ApS
 
 This file is part of the Zebra server.
@@ -220,16 +220,20 @@ static int sp_expr(struct source_parser *sp, data1_node *n, RecWord *wrd)
     }
     else if (sp->len > 0 && isdigit(*(unsigned char *)sp->tok))
     {
-       wrd->term_buf = nmem_malloc(sp->nmem, sp->len);
-       memcpy(wrd->term_buf, sp->tok, sp->len);
+       char *b;
        wrd->term_len = sp->len;
+       b = nmem_malloc(sp->nmem, sp->len);
+       memcpy(b, sp->tok, sp->len);
+       wrd->term_buf = b;
        sp_lex(sp);
     }
     else if (sp->len > 2 && sp->tok[0] == '\'' && sp->tok[sp->len-1] == '\'')
     {
+       char *b;
        wrd->term_len = sp->len - 2;
-       wrd->term_buf = nmem_malloc(sp->nmem, wrd->term_len);
-       memcpy(wrd->term_buf, sp->tok+1, wrd->term_len);
+       b = nmem_malloc(sp->nmem, wrd->term_len);
+       memcpy(b, sp->tok+1, wrd->term_len);
+       wrd->term_buf = b;
        sp_lex(sp);
     }
     else 
@@ -337,6 +341,37 @@ int d1_check_xpath_predicate(data1_node *n, struct xpath_predicate *p)
 }
 
 
+static int dfa_match_first(struct DFA_state **dfaar, const char *text)
+{
+    struct DFA_state *s = dfaar[0]; /* start state */
+    struct DFA_tran *t;
+    int i;
+    const char *p = text;
+    unsigned char c;
+    
+    for (c = *p++, t = s->trans, i = s->tran_no; --i >= 0; t++)
+    {
+       if (c >= t->ch[0] && c <= t->ch[1])
+       {
+           while (i >= 0)
+           {
+               /* move to next state and return if we get a match */
+               s = dfaar[t->to];
+               if (s->rule_no)
+                   return 1;
+               /* next char */
+               if (!c)
+                   return 0;
+               c = *p++;
+               for (t = s->trans, i = s->tran_no; --i >= 0; t++)
+                   if (c >= t->ch[0] && c <= t->ch[1])
+                       break;
+           }
+       }
+    }
+    return 0;
+}
+
 /* *ostrich*
    
 New function, looking for xpath "element" definitions in abs, by
@@ -362,44 +397,15 @@ data1_termlist *xpath_termlist_by_tagpath(char *tagpath, data1_node *n)
 #ifdef ENHANCED_XELM 
     struct xpath_location_step *xp;
 #endif
-    char *pexpr = xmalloc(strlen(tagpath)+2);
+    char *pexpr = xmalloc(strlen(tagpath)+5);
     int ok = 0;
     
-    sprintf (pexpr, "%s\n", tagpath);
-    yaz_log(YLOG_DEBUG, "Checking tagpath %s",tagpath);
+    sprintf (pexpr, "/%s\n", tagpath);
     for (; xpe; xpe = xpe->next)
     {
-        struct DFA_state **dfaar = xpe->dfa->states;
-        struct DFA_state *s = dfaar[0];
-        struct DFA_tran *t = s->trans;
-        int i = s->tran_no;
-        unsigned char c = *pexpr++;
-        int start_line = 1;
-
-       if ((c >= t->ch[0] && c <= t->ch[1]) || (!t->ch[0]))
-       {
-            const char *p = pexpr;
-            do 
-           {
-                if ((s = dfaar[t->to])->rule_no && 
-                    (start_line || s->rule_nno))
-               {
-                    ok = 1;
-                    break;
-                }
-                for (t=s->trans, i=s->tran_no; --i >= 0; t++)
-                    if ((unsigned) *p >= t->ch[0] && (unsigned) *p <= t->ch[1])
-                        break;
-                p++;
-            } 
-           while (i >= 0);
-       }
-       if (ok)
-           yaz_log(YLOG_DEBUG, " xpath match %s",xpe->xpath_expr);
-       else
-           yaz_log(YLOG_DEBUG, " xpath no match %s",xpe->xpath_expr);
+       int i;
+       ok = dfa_match_first(xpe->dfa->states, pexpr);
 
-        pexpr--;
         if (ok) {
 #ifdef ENHANCED_XELM 
             /* we have to check the perdicates up to the root node */
@@ -465,33 +471,20 @@ static void index_xpath_attr (char *tag_path, char *name, char *value,
                              char *structure, struct recExtractCtrl *p,
                              RecWord *wrd)
 {
-#if NATTR
     wrd->index_name = ZEBRA_XPATH_ELM_BEGIN;
-#else
-    wrd->attrSet = VAL_IDXPATH;
-    wrd->attrUse = 1;
-#endif
     wrd->index_type = '0';
     wrd->term_buf = tag_path;
     wrd->term_len = strlen(tag_path);
     (*p->tokenAdd)(wrd);
     
     if (value) {
-#if NATTR
-       wrd->index_name = ZEBRA_XPATH_ATTR;
-#else
-        wrd->attrUse = 1015;
-#endif
+       wrd->index_name = ZEBRA_XPATH_ATTR_CDATA;
         wrd->index_type = 'w';
         wrd->term_buf = value;
         wrd->term_len = strlen(value);
         (*p->tokenAdd)(wrd);
     }
-#if NATTR
     wrd->index_name = ZEBRA_XPATH_ELM_END;
-#else
-    wrd->attrUse = 2;
-#endif
     wrd->index_type = '0';
     wrd->term_buf = tag_path;
     wrd->term_len = strlen(tag_path);
@@ -499,37 +492,45 @@ static void index_xpath_attr (char *tag_path, char *name, char *value,
 }
 
 
+static void mk_tag_path_full(char *tag_path_full, size_t max, data1_node *n)
+{
+    size_t flen = 0;
+    data1_node *nn;
+
+    /* we have to fetch the whole path to the data tag */
+    for (nn = n; nn; nn = nn->parent)
+    {
+       if (nn->which == DATA1N_tag)
+       {
+           size_t tlen = strlen(nn->u.tag.tag);
+           if (tlen + flen > (max - 2))
+               break;
+           memcpy (tag_path_full + flen, nn->u.tag.tag, tlen);
+           flen += tlen;
+           tag_path_full[flen++] = '/';
+       }
+       else
+           if (nn->which == DATA1N_root)
+               break;
+    }
+    tag_path_full[flen] = 0;
+}
+       
+
 static void index_xpath(struct source_parser *sp, data1_node *n,
                        struct recExtractCtrl *p,
                        int level, RecWord *wrd,
-#if NATTR
                        char *xpath_index,
                        int xpath_is_start
-#else
-                       int use
-#endif
     )
 {
     int i;
     char tag_path_full[1024];
-    size_t flen = 0;
-    data1_node *nn;
     int termlist_only = 1;
     data1_termlist *tl;
     int xpdone = 0;
-#if NATTR
-#else
-    int xpath_is_start = 0;
-    if (use == 1)
-       xpath_is_start = 1;
-#endif
-
-#if NATTR
     yaz_log(YLOG_DEBUG, "index_xpath level=%d xpath_index=%s",
            level, xpath_index);
-#else
-    yaz_log(YLOG_DEBUG, "index_xpath level=%d use=%d", level, use);
-#endif
     if ((!n->root->u.root.absyn) ||
        (n->root->u.root.absyn->enable_xpath_indexing)) {
        termlist_only = 0;
@@ -541,26 +542,8 @@ static void index_xpath(struct source_parser *sp, data1_node *n,
         wrd->term_buf = n->u.data.data;
         wrd->term_len = n->u.data.len;
         xpdone = 0;
-        flen = 0;
-            
-       /* we have to fetch the whole path to the data tag */
-       for (nn = n; nn; nn = nn->parent)
-       {
-           if (nn->which == DATA1N_tag)
-           {
-               size_t tlen = strlen(nn->u.tag.tag);
-               if (tlen + flen > (sizeof(tag_path_full)-2))
-                   break;
-               memcpy (tag_path_full + flen, nn->u.tag.tag, tlen);
-               flen += tlen;
-               tag_path_full[flen++] = '/';
-           }
-           else
-               if (nn->which == DATA1N_root)
-                   break;
-       }
-       
-       tag_path_full[flen] = 0;
+
+       mk_tag_path_full(tag_path_full, sizeof(tag_path_full), n);
        
        /* If we have a matching termlist... */
        if (n->root->u.root.absyn && 
@@ -574,19 +557,10 @@ static void index_xpath(struct source_parser *sp, data1_node *n,
                memcpy (&wrd_tl, wrd, sizeof(*wrd));
                if (tl->source)
                    sp_parse(sp, n, &wrd_tl, tl->source);
-#if NATTR
                if (!tl->index_name)
-#else
-               if (!tl->att)
-#endif
                {
                    /* this is the ! case, so structure is for the xpath index */
-#if NATTR
                    wrd_tl.index_name = xpath_index;
-#else
-                   wrd_tl.attrSet = VAL_IDXPATH;
-                   wrd_tl.attrUse = use;
-#endif
                    if (p->flagShowRecords)
                    {
                        int i;
@@ -604,25 +578,13 @@ static void index_xpath(struct source_parser *sp, data1_node *n,
                    xpdone = 1;
                } else {
                    /* this is just the old fashioned attribute based index */
-#if NATTR
                    wrd_tl.index_name = tl->index_name;
-#else
-                   wrd_tl.attrSet = (int) (tl->att->parent->reference);
-                   wrd_tl.attrUse = tl->att->locals->local;
-#endif
                    if (p->flagShowRecords)
                    {
                        int i;
                        printf("%*sIdx: [%s]", (level + 1) * 4, "",
                               tl->structure);
-#if NATTR
                        printf("%s %s", tl->index_name, tl->source);
-#else
-                       printf("%s:%s [%d] %s",
-                              tl->att->parent->name,
-                              tl->att->name, tl->att->value,
-                              tl->source);
-#endif
                        printf (" XData:\"");
                        for (i = 0; i<wrd_tl.term_len && i < 40; i++)
                            fputc (wrd_tl.term_buf[i], stdout);
@@ -640,43 +602,18 @@ static void index_xpath(struct source_parser *sp, data1_node *n,
           or no ! in the termlist, and default indexing is enabled... */
        if (!p->flagShowRecords && !xpdone && !termlist_only)
        {
-#if NATTR
            wrd->index_name = xpath_index;
-#else
-           wrd->attrSet = VAL_IDXPATH;
-           wrd->attrUse = use;
-#endif
            wrd->index_type = 'w';
            (*p->tokenAdd)(wrd);
        }
         break;
     case DATA1N_tag:
-        flen = 0;
-        for (nn = n; nn; nn = nn->parent)
-        {
-            if (nn->which == DATA1N_tag)
-            {
-                size_t tlen = strlen(nn->u.tag.tag);
-                if (tlen + flen > (sizeof(tag_path_full)-2))
-                   break;
-                memcpy (tag_path_full + flen, nn->u.tag.tag, tlen);
-                flen += tlen;
-                tag_path_full[flen++] = '/';
-            }
-            else if (nn->which == DATA1N_root)
-                break;
-        }
-
+       mk_tag_path_full(tag_path_full, sizeof(tag_path_full), n);
 
         wrd->index_type = '0';
         wrd->term_buf = tag_path_full;
-        wrd->term_len = flen;
-#if NATTR
+        wrd->term_len = strlen(tag_path_full);
        wrd->index_name = xpath_index;
-#else
-        wrd->attrSet = VAL_IDXPATH;
-        wrd->attrUse = use;
-#endif
         if (p->flagShowRecords)
         {
             printf("%*s tag=", (level + 1) * 4, "");
@@ -692,8 +629,6 @@ static void index_xpath(struct source_parser *sp, data1_node *n,
             data1_termlist *tl;
            int do_xpindex;
             
-           tag_path_full[flen] = 0;
-            
             /* Add tag start/end xpath index, only when there is a ! in
               the apropriate xelm directive, or default xpath indexing
               is enabled 
@@ -704,11 +639,7 @@ static void index_xpath(struct source_parser *sp, data1_node *n,
                {
                     for (; tl; tl = tl->next) 
                    {
-#if NATTR
                        if (!tl->index_name)
-#else
-                       if (!tl->att) 
-#endif
                            do_xpindex = 1;
                    }
                 }
@@ -735,11 +666,10 @@ static void index_xpath(struct source_parser *sp, data1_node *n,
                     int do_xpindex = 1 - termlist_only;
                     data1_termlist *tl;
                     char attr_tag_path_full[1024]; 
-                    int int_len = flen;
                     
                     /* this could be cached as well */
-                    sprintf (attr_tag_path_full, "@%s/%.*s",
-                             xp->name, int_len, tag_path_full);
+                    sprintf (attr_tag_path_full, "@%s/%s",
+                             xp->name, tag_path_full);
                     
                     tll[i] = xpath_termlist_by_tagpath(attr_tag_path_full,n);
                     
@@ -749,13 +679,8 @@ static void index_xpath(struct source_parser *sp, data1_node *n,
                     {
                         for (; tl; tl = tl->next)
                         {
-#if NATTR
                            if (!tl->index_name)
                                do_xpindex = 1;
-#else
-                            if (!tl->att)
-                                do_xpindex = 1;
-#endif
                         }
                     }
                     
@@ -763,11 +688,7 @@ static void index_xpath(struct source_parser *sp, data1_node *n,
                         
                         /* attribute  (no value) */
                         wrd->index_type = '0';
-#if NATTR
-                       wrd->index_name = ZEBRA_XPATH_ATTR;
-#else
-                        wrd->attrUse = 3;
-#endif
+                       wrd->index_name = ZEBRA_XPATH_ATTR_NAME;
                         wrd->term_buf = xp->name;
                         wrd->term_len = strlen(xp->name);
                         
@@ -782,11 +703,7 @@ static void index_xpath(struct source_parser *sp, data1_node *n,
                             strcat (comb, "=");
                             strcat (comb, xp->value);
 
-#if NATTR
-                            wrd->index_name = ZEBRA_XPATH_ATTR;
-#else
-                            wrd->attrUse = 3;
-#endif
+                            wrd->index_name = ZEBRA_XPATH_ATTR_NAME;
                             wrd->index_type = '0';
                             wrd->term_buf = comb;
                             wrd->term_len = strlen(comb);
@@ -802,22 +719,17 @@ static void index_xpath(struct source_parser *sp, data1_node *n,
                 for (xp = n->u.tag.attributes; xp; xp = xp->next) {
                     data1_termlist *tl;
                     char attr_tag_path_full[1024];
-                    int int_len = flen;
                     int xpdone = 0;
                     
-                    sprintf (attr_tag_path_full, "@%s/%.*s",
-                             xp->name, int_len, tag_path_full);
+                    sprintf (attr_tag_path_full, "@%s/%s",
+                             xp->name, tag_path_full);
                     
                     if ((tl = tll[i]))
                     {
                         /* If there is a termlist given (=xelm directive) */
                         for (; tl; tl = tl->next)
                         {
-#if NATTR
                            if (!tl->index_name)
-#else
-                            if (!tl->att) 
-#endif
                            {
                                 /* add xpath index for the attribute */
                                 index_xpath_attr (attr_tag_path_full, xp->name,
@@ -825,16 +737,10 @@ static void index_xpath(struct source_parser *sp, data1_node *n,
                                                   p, wrd);
                                 xpdone = 1;
                             } else {
-                                /* add attribute based index for the attribute */
+                                /* index attribute value (only path/@attr) */
                                 if (xp->value) 
                                {
-#if NATTR
                                    wrd->index_name = tl->index_name;
-#else
-                                    wrd->attrSet = (int) 
-                                        (tl->att->parent->reference);
-                                    wrd->attrUse = tl->att->locals->local;
-#endif
                                     wrd->index_type = *tl->structure;
                                     wrd->term_buf = xp->value;
                                     wrd->term_len = strlen(xp->value);
@@ -893,14 +799,7 @@ static void index_termlist (struct source_parser *sp, data1_node *par,
                int i;
                printf("%*sIdx: [%s]", (level + 1) * 4, "",
                       tlist->structure);
-#if NATTR
                printf("%s %s", tlist->index_name, tlist->source);
-#else
-               printf("%s:%s [%d] %s",
-                      tlist->att->parent->name,
-                      tlist->att->name, tlist->att->value,
-                      tlist->source);
-#endif
                printf (" XData:\"");
                for (i = 0; i<wrd->term_len && i < 40; i++)
                    fputc (wrd->term_buf[i], stdout);
@@ -912,12 +811,7 @@ static void index_termlist (struct source_parser *sp, data1_node *par,
            else
            {
                wrd->index_type = *tlist->structure;
-#if NATTR
                wrd->index_name = tlist->index_name;
-#else
-               wrd->attrSet = (int) (tlist->att->parent->reference);
-               wrd->attrUse = tlist->att->locals->local;
-#endif
                (*p->tokenAdd)(wrd);
            }
        }
@@ -971,14 +865,9 @@ static int dumpkeys_r(struct source_parser *sp,
        {
             index_termlist(sp, n, n, p, level, wrd);
             /* index start tag */
-#if NATTR
            if (n->root->u.root.absyn)
                index_xpath(sp, n, p, level, wrd, ZEBRA_XPATH_ELM_BEGIN, 
                            1 /* is start */);
-#else
-           if (n->root->u.root.absyn)
-               index_xpath(sp, n, p, level, wrd, 1);
-#endif
        }
 
        if (n->child)
@@ -1006,23 +895,15 @@ static int dumpkeys_r(struct source_parser *sp,
            if (par)
                index_termlist(sp, par, n, p, level, wrd);
 
-#if NATTR
            index_xpath(sp, n, p, level, wrd, ZEBRA_XPATH_CDATA, 
                        0 /* is start */);
-#else
-           index_xpath(sp, n, p, level, wrd, 1016);
-#endif
        }
 
        if (n->which == DATA1N_tag)
        {
             /* index end tag */
-#if NATTR
            index_xpath(sp, n, p, level, wrd, ZEBRA_XPATH_ELM_END, 
                        0 /* is start */);
-#else
-           index_xpath(sp, n, p, level, wrd, 2);
-#endif
        }
 
        if (p->flagShowRecords && n->which == DATA1N_root)
@@ -1561,3 +1442,11 @@ int zebra_grs_retrieve(void *clientData, struct recRetrieveCtrl *p,
     return 0;
 }
 
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+