index/retrieve.c

   1 /* This file is part of the Zebra server.
   2    Copyright (C) 1994-2009 Index Data
   3
   4 Zebra is free software; you can redistribute it and/or modify it under
   5 the terms of the GNU General Public License as published by the Free
   6 Software Foundation; either version 2, or (at your option) any later
   7 version.
   8
   9 Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
  10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12 for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program; if not, write to the Free Software
  16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17
  18 */
  19
  20 #include <stdio.h>
  21 #include <assert.h>
  22
  23 #include <fcntl.h>
  24 #ifdef WIN32
  25 #include <io.h>
  26 #include <process.h>
  27 #endif
  28 #if HAVE_UNISTD_H
  29 #include <unistd.h>
  30 #endif
  31
  32 #include "index.h"
  33 #include <yaz/diagbib1.h>
  34 #include <yaz/snprintf.h>
  35 #include <direntz.h>
  36 #include <yaz/oid_db.h>
  37 #include <zebra_strmap.h>
  38
  39 #define MAX_SYSNOS_PER_RECORD 40
  40
  41 #define ZEBRA_XML_HEADER_STR "<record xmlns=\"http://www.indexdata.com/zebra/\""
  42
  43 struct special_fetch_s {
  44     ZebraHandle zh;
  45     const char *setname;
  46     zint sysno;
  47     int score;
  48     NMEM nmem;
  49 };
  50
  51 static int zebra_create_record_stream(ZebraHandle zh,
  52                                       Record *rec,
  53                                       struct ZebraRecStream *stream)
  54 {
  55     RecordAttr *recordAttr = rec_init_attr(zh->reg->zei, *rec);
  56
  57     if ((*rec)->size[recInfo_storeData] > 0
  58         || (*rec)->info[recInfo_filename] == 0)
  59         zebra_create_stream_mem(stream, (*rec)->info[recInfo_storeData],
  60                                 (*rec)->size[recInfo_storeData]);
  61     else
  62     {
  63         char full_rep[1024];
  64         int fd;
  65
  66         if (zh->path_reg && !yaz_is_abspath((*rec)->info[recInfo_filename])){
  67             strcpy(full_rep, zh->path_reg);
  68             strcat(full_rep, "/");
  69             strcat(full_rep, (*rec)->info[recInfo_filename]);
  70         }
  71         else
  72             strcpy(full_rep, (*rec)->info[recInfo_filename]);
  73
  74         if ((fd = open(full_rep, O_BINARY|O_RDONLY)) == -1){
  75             yaz_log(YLOG_WARN|YLOG_ERRNO, "Retrieve fail; missing file: %s",
  76                      full_rep);
  77             rec_free(rec);
  78             return YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
  79         }
  80         zebra_create_stream_fd(stream, fd, recordAttr->recordOffset);
  81     }
  82     return 0;
  83 }
  84
  85
  86 struct index_spec {
  87     const char *index_name;
  88     const char *index_type;
  89     const char *extra;
  90     struct index_spec *next;
  91 };
  92
  93
  94 struct index_spec *parse_index_spec(const char *elem, NMEM nmem,
  95                                     int *error)
  96 {
  97     struct index_spec *first = 0;
  98     struct index_spec **last = &first;
  99     const char *cp = elem;
 100
 101     *error = 0;
 102     if (cp[0] == ':' && cp[1] == ':')
 103     {
 104
 105         cp++; /* skip first ':' */
 106
 107         for (;;)
 108         {
 109             const char *cp0;
 110             struct index_spec *spec = nmem_malloc(nmem, sizeof(*spec));
 111             spec->index_type = 0;
 112             spec->next = 0;
 113             spec->extra = 0;
 114
 115             if (!first)
 116                 first = spec;
 117             *last = spec;
 118             last = &spec->next;
 119
 120             cp++; /* skip ',' or second ':' */
 121             cp0 = cp;
 122             while (*cp != ':' && *cp != '\0' && *cp != ',')
 123                 cp++;
 124             spec->index_name = nmem_strdupn(nmem, cp0, cp - cp0);
 125             if (*cp == ':') /* type as well */
 126             {
 127                 cp++;
 128                 cp0 = cp;
 129
 130                 while (*cp != '\0' && *cp != ',' && *cp != ':')
 131                     cp++;
 132                 spec->index_type = nmem_strdupn(nmem, cp0, cp - cp0);
 133             }
 134             if (*cp == ':') /* extra arguments */
 135             {
 136                 cp++;
 137                 cp0 = cp;
 138
 139                 while (*cp != '\0' && *cp != ',' && *cp != ':')
 140                     cp++;
 141                 spec->extra = nmem_strdupn(nmem, cp0, cp - cp0);
 142             }
 143             if (*cp != ',')
 144                 break;
 145         }
 146     }
 147     if (*cp != '\0')
 148         *error = 1;
 149     return first;
 150 }
 151
 152 static int parse_zebra_elem(const char *elem,
 153                             const char **index, size_t *index_len,
 154                             const char **type, size_t *type_len)
 155 {
 156     *index = 0;
 157     *index_len = 0;
 158
 159     *type = 0;
 160     *type_len = 0;
 161
 162     if (elem && *elem)
 163     {
 164         char *cp;
 165         /* verify that '::' is in the beginning of *elem
 166            and something more follows */
 167         if (':' != *elem
 168             || !(elem +1) || ':' != *(elem +1)
 169             || !(elem +2) || '\0' == *(elem +2))
 170             return 0;
 171
 172         /* pick out info from string after '::' */
 173         elem = elem + 2;
 174         cp = strchr(elem, ':');
 175
 176         if (!cp) /* index, no colon, no type */
 177         {
 178             *index = elem;
 179             *index_len = strlen(elem);
 180         }
 181         else if (cp[1] == '\0') /* colon, but no following type */
 182         {
 183             return 0;
 184         }
 185         else  /* index, colon and type */
 186         {
 187             *index = elem;
 188             *index_len = cp - elem;
 189             *type = cp+1;
 190             *type_len = strlen(cp+1);
 191         }
 192     }
 193     return 1;
 194 }
 195
 196
 197 static int sort_fetch(
 198     struct special_fetch_s *fi, const char *elemsetname,
 199     const Odr_oid *input_format,
 200     const Odr_oid **output_format,
 201     WRBUF result, WRBUF addinfo)
 202 {
 203     const char *retrieval_index;
 204     size_t retrieval_index_len;
 205     const char *retrieval_type;
 206     size_t retrieval_type_len;
 207     char retrieval_index_cstr[256];
 208     char retrieval_type_cstr[256];
 209     int ord;
 210     ZebraHandle zh = fi->zh;
 211
 212     if (!parse_zebra_elem(elemsetname,
 213                           &retrieval_index, &retrieval_index_len,
 214                           &retrieval_type,  &retrieval_type_len))
 215     {
 216         return YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
 217     }
 218
 219     if (retrieval_type_len == 0)
 220         return -1;   /* must have a register type specified */
 221     if (!retrieval_index_len ||
 222         retrieval_index_len >= sizeof(retrieval_index_cstr)-1)
 223     {
 224         return YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
 225     }
 226
 227     memcpy(retrieval_index_cstr, retrieval_index, retrieval_index_len);
 228     retrieval_index_cstr[retrieval_index_len] = '\0';
 229
 230     memcpy(retrieval_type_cstr, retrieval_type, retrieval_type_len);
 231     retrieval_type_cstr[retrieval_type_len] = '\0';
 232
 233     ord = zebraExplain_lookup_attr_str(zh->reg->zei,
 234                                        zinfo_index_category_sort,
 235                                        retrieval_type_cstr,
 236                                        retrieval_index_cstr);
 237     if (ord == -1)
 238         return -1;  /* is not a sort index */
 239     else
 240     {
 241         WRBUF wrbuf_str = wrbuf_alloc();
 242         const char *index_type;
 243         const char *db = 0;
 244         const char *string_index = 0;
 245         WRBUF wrbuf_result = result;
 246         int off = 0;
 247
 248         zebraExplain_lookup_ord(zh->reg->zei, ord, &index_type, &db,
 249                                 &string_index);
 250         if (!oid_oidcmp(input_format, yaz_oid_recsyn_xml))
 251         {
 252             *output_format = yaz_oid_recsyn_xml;
 253             wrbuf_printf(wrbuf_result, ZEBRA_XML_HEADER_STR
 254                          " sysno=\"" ZINT_FORMAT "\""
 255                          " set=\"zebra::index%s/\">\n",
 256                          fi->sysno, elemsetname);
 257         }
 258         else if (!oid_oidcmp(input_format, yaz_oid_recsyn_sutrs))
 259         {
 260             *output_format = yaz_oid_recsyn_sutrs;
 261         }
 262         else
 263         {
 264             yaz_log(YLOG_WARN, "unsupported format for element set zebra::%s",
 265                     elemsetname);
 266             *output_format = 0;
 267             wrbuf_destroy(wrbuf_str);
 268             return YAZ_BIB1_NO_SYNTAXES_AVAILABLE_FOR_THIS_REQUEST;
 269         }
 270         zebra_sort_type(zh->reg->sort_index, ord);
 271         zebra_sort_sysno(zh->reg->sort_index, fi->sysno);
 272         zebra_sort_read(zh->reg->sort_index, 0, wrbuf_str);
 273
 274         while (off != wrbuf_len(wrbuf_str))
 275         {
 276             char dst_buf[IT_MAX_WORD];
 277             assert(off < wrbuf_len(wrbuf_str));
 278             zebra_term_untrans(zh, index_type, dst_buf,
 279                                wrbuf_buf(wrbuf_str)+off);
 280
 281             if (!oid_oidcmp(input_format, yaz_oid_recsyn_xml))
 282             {
 283                 wrbuf_printf(wrbuf_result, "  <index name=\"%s\"",
 284                              string_index);
 285                 wrbuf_printf(wrbuf_result, " type=\"%s\">", index_type);
 286                 wrbuf_xmlputs(wrbuf_result, dst_buf);
 287                 wrbuf_printf(wrbuf_result, "</index>\n");
 288             }
 289             else if (!oid_oidcmp(input_format, yaz_oid_recsyn_sutrs))
 290             {
 291                 wrbuf_printf(wrbuf_result, "%s %s %s\n", string_index, index_type,
 292                              dst_buf);
 293             }
 294             off += strlen(wrbuf_buf(wrbuf_str)+off) + 1;
 295         }
 296         if (!oid_oidcmp(input_format, yaz_oid_recsyn_xml))
 297         {
 298             wrbuf_printf(wrbuf_result, "</record>\n");
 299         }
 300         wrbuf_destroy(wrbuf_str);
 301         return 0;
 302     }
 303 }
 304
 305 static int special_index_fetch(
 306     struct special_fetch_s *fi, const char *elemsetname,
 307     const Odr_oid *input_format,
 308     const Odr_oid **output_format,
 309     WRBUF result, WRBUF addinfo,
 310     Record rec)
 311 {
 312     const char *retrieval_index;
 313     size_t retrieval_index_len;
 314     const char *retrieval_type;
 315     size_t retrieval_type_len;
 316     zebra_rec_keys_t keys;
 317     int ret_code = 0;
 318     char retrieval_type_cstr[256];
 319     ZebraHandle zh = fi->zh;
 320
 321     /* set output variables before processing possible error states */
 322     /* *rec_lenp = 0; */
 323
 324     /* only accept XML and SUTRS requests */
 325     if (oid_oidcmp(input_format, yaz_oid_recsyn_xml)
 326         && oid_oidcmp(input_format, yaz_oid_recsyn_sutrs))
 327     {
 328         yaz_log(YLOG_WARN, "unsupported format for element set zebra::%s",
 329                 elemsetname);
 330         *output_format = 0;
 331         return YAZ_BIB1_NO_SYNTAXES_AVAILABLE_FOR_THIS_REQUEST;
 332     }
 333
 334     if (!parse_zebra_elem(elemsetname,
 335                      &retrieval_index, &retrieval_index_len,
 336                      &retrieval_type,  &retrieval_type_len))
 337         return YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
 338
 339     if (retrieval_type_len)
 340     {
 341         memcpy(retrieval_type_cstr, retrieval_type, retrieval_type_len);
 342         retrieval_type_cstr[retrieval_type_len] = '\0';
 343     }
 344
 345     if (retrieval_index_len)
 346     {
 347         char retrieval_index_cstr[256];
 348
 349         if (retrieval_index_len < sizeof(retrieval_index_cstr) -1)
 350         {
 351             memcpy(retrieval_index_cstr, retrieval_index, retrieval_index_len);
 352             retrieval_index_cstr[retrieval_index_len] = '\0';
 353
 354             if (zebraExplain_lookup_attr_str(zh->reg->zei,
 355                                              zinfo_index_category_index,
 356                                              (retrieval_type_len == 0 ? 0 :
 357                                               retrieval_type_cstr),
 358                                              retrieval_index_cstr) == -1)
 359                 return YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
 360         }
 361     }
 362
 363     keys = zebra_rec_keys_open();
 364     zebra_rec_keys_set_buf(keys, rec->info[recInfo_delKeys],
 365                            rec->size[recInfo_delKeys], 0);
 366
 367     if (!zebra_rec_keys_rewind(keys))
 368     {
 369         ret_code = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
 370     }
 371     else
 372     {
 373         size_t slen;
 374         const char *str;
 375         struct it_key key_in;
 376         WRBUF wrbuf = result;
 377
 378         if (!oid_oidcmp(input_format, yaz_oid_recsyn_xml))
 379         {
 380             *output_format = input_format;
 381             wrbuf_printf(wrbuf, ZEBRA_XML_HEADER_STR
 382                          " sysno=\"" ZINT_FORMAT "\""
 383                          " set=\"zebra::index%s/\">\n",
 384                          fi->sysno, elemsetname);
 385         }
 386         else if (!oid_oidcmp(input_format, yaz_oid_recsyn_sutrs))
 387             *output_format = input_format;
 388
 389         while (zebra_rec_keys_read(keys, &str, &slen, &key_in))
 390         {
 391             int i;
 392             int ord = CAST_ZINT_TO_INT(key_in.mem[0]);
 393             const char *index_type;
 394             const char *db = 0;
 395             const char *string_index = 0;
 396             size_t string_index_len;
 397             char dst_buf[IT_MAX_WORD];
 398
 399             zebraExplain_lookup_ord(zh->reg->zei, ord, &index_type, &db,
 400                                     &string_index);
 401             string_index_len = strlen(string_index);
 402
 403             /* process only if index is not defined,
 404                or if defined and matching */
 405             if (retrieval_index == 0
 406                 || (string_index_len == retrieval_index_len
 407                     && !memcmp(string_index, retrieval_index,
 408                                string_index_len)))
 409             {
 410                 /* process only if type is not defined, or is matching */
 411                 if (retrieval_type == 0
 412                     || !strcmp(retrieval_type_cstr, index_type))
 413                 {
 414                     if (zebra_term_untrans(zh, index_type, dst_buf, str))
 415                         *dst_buf = '\0'; /* untrans failed */
 416
 417                     if (!oid_oidcmp(input_format, yaz_oid_recsyn_xml))
 418                     {
 419                         wrbuf_printf(wrbuf, "  <index name=\"%s\"",
 420                                      string_index);
 421
 422                         wrbuf_printf(wrbuf, " type=\"%s\"", index_type);
 423
 424                         wrbuf_printf(wrbuf, " seq=\"" ZINT_FORMAT "\">",
 425                                      key_in.mem[key_in.len -1]);
 426                         wrbuf_xmlputs(wrbuf, dst_buf);
 427                         wrbuf_printf(wrbuf, "</index>\n");
 428                     }
 429                     else
 430                     {
 431                         wrbuf_printf(wrbuf, "%s ", string_index);
 432
 433                         wrbuf_printf(wrbuf, "%s", index_type);
 434
 435                         for (i = 1; i < key_in.len; i++)
 436                             wrbuf_printf(wrbuf, " " ZINT_FORMAT,
 437                                              key_in.mem[i]);
 438
 439                         wrbuf_printf(wrbuf, " %s", dst_buf);
 440
 441                         wrbuf_printf(wrbuf, "\n");
 442
 443                     }
 444
 445                 }
 446             }
 447         }
 448         if (!oid_oidcmp(input_format, yaz_oid_recsyn_xml))
 449             wrbuf_printf(wrbuf, "</record>\n");
 450     }
 451     zebra_rec_keys_close(keys);
 452     return ret_code;
 453 }
 454
 455
 456 static void retrieve_puts_attr(WRBUF wrbuf, const char *name,
 457                                const char *value)
 458 {
 459     if (value)
 460     {
 461         wrbuf_printf(wrbuf, " %s=\"", name);
 462         wrbuf_xmlputs(wrbuf, value);
 463         wrbuf_printf(wrbuf, "\"");
 464     }
 465 }
 466
 467 static void retrieve_puts_attr_int(WRBUF wrbuf, const char *name,
 468                                const int value)
 469 {
 470     wrbuf_printf(wrbuf, " %s=\"%i\"", name, value);
 471 }
 472
 473 static void retrieve_puts_str(WRBUF wrbuf, const char *name,
 474                                const char *value)
 475 {
 476     if (value)
 477         wrbuf_printf(wrbuf, "%s %s\n", name, value);
 478 }
 479
 480 static void retrieve_puts_int(WRBUF wrbuf, const char *name,
 481                                const int value)
 482 {
 483     wrbuf_printf(wrbuf, "%s %i\n", name, value);
 484 }
 485
 486
 487 static void snippet_check_fields(ZebraHandle zh, WRBUF wrbuf,
 488                                  zebra_snippets *doc,
 489                                  const zebra_snippet_word *doc_w,
 490                                  const char *w_index_type)
 491 {
 492     /* beginning of snippet. See which fields the snippet also
 493        occur */
 494     const zebra_snippet_word *w;
 495     int no = 0;
 496     for (w = zebra_snippets_constlist(doc); w; w = w->next)
 497     {
 498         /* same sequence but other field? */
 499         if (w->seqno == doc_w->seqno && w->ord != doc_w->ord)
 500         {
 501             const char *index_type;
 502             const char *db = 0;
 503             const char *string_index = 0;
 504
 505             zebraExplain_lookup_ord(zh->reg->zei, w->ord,
 506                                     &index_type, &db, &string_index);
 507             /* only report for same index type */
 508             if (!strcmp(w_index_type, index_type))
 509             {
 510                 if (no == 0)
 511                     wrbuf_printf(wrbuf, " fields=\"%s", string_index);
 512                 else
 513                     wrbuf_printf(wrbuf, " %s", string_index);
 514                 no++;
 515             }
 516         }
 517     }
 518     if (no)
 519         wrbuf_printf(wrbuf, "\"");
 520 }
 521
 522 static void snippet_xml_record(ZebraHandle zh, WRBUF wrbuf, zebra_snippets *doc)
 523 {
 524     const zebra_snippet_word *doc_w;
 525     int mark_state = 0;
 526
 527     wrbuf_printf(wrbuf, "%s>\n", ZEBRA_XML_HEADER_STR);
 528     for (doc_w = zebra_snippets_constlist(doc); doc_w; doc_w = doc_w->next)
 529     {
 530         if (doc_w->mark)
 531         {
 532             const char *index_type;
 533             const char *db = 0;
 534             const char *string_index = 0;
 535
 536             zebraExplain_lookup_ord(zh->reg->zei, doc_w->ord,
 537                                     &index_type, &db, &string_index);
 538
 539             if (mark_state == 0)
 540             {
 541
 542                 wrbuf_printf(wrbuf, "  <snippet name=\"%s\"",  string_index);
 543                 wrbuf_printf(wrbuf, " type=\"%s\"", index_type);
 544                 snippet_check_fields(zh, wrbuf, doc, doc_w, index_type);
 545                 wrbuf_printf(wrbuf, ">");
 546             }
 547             if (doc_w->match)
 548                 wrbuf_puts(wrbuf, "<s>");
 549             /* not printing leading ws */
 550             if (mark_state || !doc_w->ws || doc_w->match)
 551                 wrbuf_xmlputs(wrbuf, doc_w->term);
 552             if (doc_w->match)
 553                 wrbuf_puts(wrbuf, "</s>");
 554         }
 555         else if (mark_state == 1)
 556         {
 557             wrbuf_puts(wrbuf, "</snippet>\n");
 558         }
 559         mark_state = doc_w->mark;
 560     }
 561     if (mark_state == 1)
 562     {
 563         wrbuf_puts(wrbuf, "</snippet>\n");
 564     }
 565     wrbuf_printf(wrbuf, "</record>");
 566 }
 567
 568 int zebra_get_rec_snippets(ZebraHandle zh, zint sysno,
 569                            zebra_snippets *snippets)
 570 {
 571     int return_code = 0;
 572     Record rec = rec_get(zh->reg->records, sysno);
 573     if (!rec)
 574     {
 575         yaz_log(YLOG_WARN, "rec_get fail on sysno=" ZINT_FORMAT, sysno);
 576         return_code = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
 577     }
 578     else
 579     {
 580         const char *file_type = rec->info[recInfo_fileType];
 581         void *recTypeClientData;
 582         RecType rt = recType_byName(zh->reg->recTypes, zh->res,
 583                                     file_type, &recTypeClientData);
 584
 585         if (!rt)
 586             return_code = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
 587         else
 588         {
 589             struct ZebraRecStream stream;
 590             return_code = zebra_create_record_stream(zh, &rec, &stream);
 591             if (return_code == 0)
 592             {
 593                 extract_snippet(zh, snippets, &stream,
 594                                 rt, recTypeClientData);
 595
 596                 stream.destroy(&stream);
 597             }
 598         }
 599         rec_free(&rec);
 600     }
 601     return return_code;
 602 }
 603
 604 static int snippet_fetch(
 605     struct special_fetch_s *fi, const char *elemsetname,
 606     const Odr_oid *input_format,
 607     const Odr_oid **output_format,
 608     WRBUF result, WRBUF addinfo)
 609 {
 610     ZebraHandle zh = fi->zh;
 611     zebra_snippets *rec_snippets = zebra_snippets_create();
 612     int return_code = zebra_get_rec_snippets(zh, fi->sysno, rec_snippets);
 613
 614     if (!return_code)
 615     {
 616         WRBUF wrbuf = result;
 617         zebra_snippets *hit_snippet = zebra_snippets_create();
 618
 619         zebra_snippets_hit_vector(zh, fi->setname, fi->sysno, hit_snippet);
 620
 621 #if 0
 622         /* for debugging purposes */
 623         yaz_log(YLOG_LOG, "---------------------------");
 624         yaz_log(YLOG_LOG, "REC SNIPPET:");
 625         zebra_snippets_log(rec_snippets, YLOG_LOG, 1);
 626         yaz_log(YLOG_LOG, "---------------------------");
 627         yaz_log(YLOG_LOG, "HIT SNIPPET:");
 628         zebra_snippets_log(hit_snippet, YLOG_LOG, 1);
 629 #endif
 630
 631         zebra_snippets_ring(rec_snippets, hit_snippet, 5, 5);
 632
 633 #if 0
 634         yaz_log(YLOG_LOG, "---------------------------");
 635         yaz_log(YLOG_LOG, "RING SNIPPET:");
 636         zebra_snippets_log(rec_snippets, YLOG_LOG, 1);
 637 #endif
 638         snippet_xml_record(zh, wrbuf, rec_snippets);
 639
 640         *output_format = yaz_oid_recsyn_xml;
 641
 642         zebra_snippets_destroy(hit_snippet);
 643     }
 644     zebra_snippets_destroy(rec_snippets);
 645     return return_code;
 646 }
 647
 648 struct term_collect {
 649     const char *term;
 650     int oc;
 651     zint set_occur;
 652 };
 653
 654 static zint freq_term(ZebraHandle zh, int ord, const char *term, RSET rset_set)
 655 {
 656     struct rset_key_control *kc = zebra_key_control_create(zh);
 657     char ord_buf[IT_MAX_WORD];
 658     int ord_len = key_SU_encode(ord, ord_buf);
 659     char *info;
 660     zint hits = 0;
 661     NMEM nmem = nmem_create();
 662
 663     strcpy(ord_buf + ord_len, term);
 664
 665     info = dict_lookup(zh->reg->dict, ord_buf);
 666     if (info)
 667     {
 668         ISAM_P isam_p;
 669         RSET rsets[2], rset;
 670         memcpy(&isam_p, info+1, sizeof(ISAM_P));
 671
 672         rsets[0] = zebra_create_rset_isam(zh, nmem, kc, kc->scope, isam_p, 0);
 673         rsets[1] = rset_dup(rset_set);
 674
 675         rset = rset_create_and(nmem, kc, kc->scope, 2, rsets);
 676
 677         zebra_count_set(zh, rset, &hits, zh->approx_limit);
 678
 679         rset_delete(rsets[0]);
 680         rset_delete(rset);
 681     }
 682     (*kc->dec)(kc);
 683     nmem_destroy(nmem);
 684     return hits;
 685 }
 686
 687 static int term_qsort_handle(const void *a, const void *b)
 688 {
 689     const struct term_collect *l = a;
 690     const struct term_collect *r = b;
 691     if (l->set_occur < r->set_occur)
 692         return 1;
 693     else if (l->set_occur > r->set_occur)
 694         return -1;
 695     else
 696     {
 697         const char *lterm = l->term ? l->term : "";
 698         const char *rterm = r->term ? r->term : "";
 699         return strcmp(lterm, rterm);
 700     }
 701 }
 702
 703 static void term_collect_freq(ZebraHandle zh,
 704                               struct term_collect *col, int no_terms_collect,
 705                               int ord, RSET rset, double scale_factor)
 706 {
 707     int i;
 708     for (i = 0; i < no_terms_collect; i++)
 709     {
 710         if (col[i].term)
 711         {
 712             if (scale_factor < 0.0)
 713             {
 714                 col[i].set_occur = freq_term(zh, ord, col[i].term, rset);
 715             }
 716             else
 717                 col[i].set_occur = scale_factor * col[i].oc;
 718         }
 719     }
 720     qsort(col, no_terms_collect, sizeof(*col), term_qsort_handle);
 721 }
 722
 723 static struct term_collect *term_collect_create(zebra_strmap_t sm,
 724                                                 int no_terms_collect,
 725                                                 NMEM nmem)
 726 {
 727     const char *term;
 728     void *data_buf;
 729     size_t data_len;
 730     zebra_strmap_it it;
 731     struct term_collect *col = nmem_malloc(nmem,
 732                                            sizeof *col *no_terms_collect);
 733     int i;
 734     for (i = 0; i < no_terms_collect; i++)
 735     {
 736         col[i].term = 0;
 737         col[i].oc = 0;
 738         col[i].set_occur = 0;
 739     }
 740     /* iterate over terms and collect the most frequent ones */
 741     it = zebra_strmap_it_create(sm);
 742     while ((term = zebra_strmap_it_next(it, &data_buf, &data_len)))
 743     {
 744         /* invariant:
 745            col[0] has lowest oc .  col[no_terms_collect-1] has highest oc */
 746         int oc = *(int*) data_buf;
 747         int j = 0;
 748         /* insertion may be slow but terms terms will be "infrequent" and
 749            thus number of iterations should be small below
 750         */
 751         while (j < no_terms_collect && oc > col[j].oc)
 752             j++;
 753         if (j)
 754         {   /* oc <= col[j] and oc > col[j-1] */
 755             --j;
 756             memmove(col, col+1, sizeof(*col) * j);
 757             col[j].term = term;
 758             col[j].oc = oc;
 759         }
 760     }
 761     zebra_strmap_it_destroy(it);
 762     return col;
 763 }
 764
 765 static int perform_facet_sort(ZebraHandle zh, int no_ord, int *ord_array,
 766                               zebra_strmap_t *map_array,
 767                               int num_recs, ZebraMetaRecord *poset)
 768 {
 769     int rec_i;
 770     WRBUF w = wrbuf_alloc();
 771     int ord_i;
 772
 773     for (ord_i = 0; ord_i < no_ord; ord_i++)
 774     {
 775         for (rec_i = 0; rec_i < num_recs; rec_i++)
 776         {
 777             if (!poset[rec_i].sysno)
 778                 continue;
 779
 780             zebra_sort_sysno(zh->reg->sort_index, poset[rec_i].sysno);
 781             zebra_sort_type(zh->reg->sort_index, ord_array[ord_i]);
 782
 783             wrbuf_rewind(w);
 784             if (zebra_sort_read(zh->reg->sort_index, 0, w))
 785             {
 786                 zebra_strmap_t sm = map_array[ord_i];
 787                 int off = 0;
 788                 while (off != wrbuf_len(w))
 789                 {
 790                     const char *str = wrbuf_buf(w) + off;
 791                     int *freq = zebra_strmap_lookup(sm, str, 0, 0);
 792                     if (freq)
 793                         (*freq)++;
 794                     else
 795                     {
 796                         int v = 1;
 797                         zebra_strmap_add(sm, str, &v, sizeof v);
 798                     }
 799                     off += strlen(str)+1;
 800                 }
 801             }
 802         }
 803     }
 804     wrbuf_destroy(w);
 805     return 0;
 806 }
 807
 808
 809 static int perform_facet_index(ZebraHandle zh,
 810                                struct special_fetch_s *fi,
 811                                int no_ord, int *ord_array,
 812                                zebra_strmap_t *map_array,
 813                                int num_recs, ZebraMetaRecord *poset,
 814                                struct index_spec *spec_list)
 815 {
 816     int max_chunks = 2;
 817     int rec_i;
 818     res_get_int(zh->res, "facetMaxChunks", &max_chunks);
 819
 820     for (rec_i = 0; rec_i < num_recs; rec_i++)
 821     {
 822         int ret;
 823         int j;
 824         zint sysnos[MAX_SYSNOS_PER_RECORD];
 825         int no_sysnos = MAX_SYSNOS_PER_RECORD;
 826         if (!poset[rec_i].sysno)
 827             continue;
 828         ret = zebra_result_recid_to_sysno(zh, fi->setname,
 829                                           poset[rec_i].sysno,
 830                                           sysnos, &no_sysnos);
 831         assert(no_sysnos > 0);
 832         yaz_log(YLOG_DEBUG, "Analyzing rec=%d ISAM sysno=" ZINT_FORMAT " chunks=%d",
 833                 rec_i, poset[rec_i].sysno, no_sysnos);
 834         for (j = 0; j < no_sysnos && j < max_chunks; j++)
 835         {
 836             size_t slen;
 837             const char *str;
 838             struct it_key key_in;
 839             Record rec = rec_get(zh->reg->records, sysnos[j]);
 840             zebra_rec_keys_t keys = zebra_rec_keys_open();
 841             zebra_rec_keys_set_buf(keys, rec->info[recInfo_delKeys],
 842                                    rec->size[recInfo_delKeys], 0);
 843
 844             yaz_log(YLOG_DEBUG, "rec %d " ZINT_FORMAT " %s",
 845                     j, sysnos[j], zebra_rec_keys_empty(keys) ? "empty" : "non-empty");
 846             if (zebra_rec_keys_rewind(keys))
 847             {
 848                 while (zebra_rec_keys_read(keys, &str, &slen, &key_in))
 849                 {
 850                     int ord_i;
 851                     struct index_spec *spec;
 852                     for (spec = spec_list, ord_i = 0; ord_i < no_ord;
 853                          ord_i++, spec = spec->next)
 854                     {
 855                         int ord = CAST_ZINT_TO_INT(key_in.mem[0]);
 856                         if (ord == ord_array[ord_i] &&
 857                             str[0] != FIRST_IN_FIELD_CHAR)
 858                         {
 859                             int *freq;
 860                             zebra_strmap_t sm = map_array[ord_i];
 861
 862                             freq = zebra_strmap_lookup(sm, str, 0, 0);
 863                             if (freq)
 864                                 (*freq)++;
 865                             else
 866                             {
 867                                 int v = 1;
 868                                 zebra_strmap_add(sm, str, &v, sizeof v);
 869                             }
 870                         }
 871                     }
 872                 }
 873             }
 874             zebra_rec_keys_close(keys);
 875             rec_free(&rec);
 876         }
 877     }
 878     return 0;
 879 }
 880
 881 static int perform_facet(ZebraHandle zh,
 882                          struct special_fetch_s *fi,
 883                          WRBUF result,
 884                          int num_recs, ZebraMetaRecord *poset,
 885                          struct index_spec *spec_list,
 886                          int no_ord, int *ord_array,
 887                          int use_xml,
 888                          zinfo_index_category_t cat)
 889 {
 890     int i;
 891     int ret = 0;
 892     WRBUF wr = result;
 893     struct index_spec *spec;
 894     yaz_timing_t timing = yaz_timing_create();
 895     zebra_strmap_t *map_array
 896         = nmem_malloc(fi->nmem, sizeof *map_array * no_ord);
 897     for (i = 0; i < no_ord; i++)
 898         map_array[i] = zebra_strmap_create();
 899
 900     if (cat == zinfo_index_category_sort)
 901         perform_facet_sort(zh, no_ord, ord_array, map_array,
 902                            num_recs, poset);
 903     else
 904         perform_facet_index(zh, fi, no_ord, ord_array, map_array,
 905                             num_recs, poset, spec_list);
 906     yaz_timing_stop(timing);
 907     yaz_log(YLOG_LOG, "facet first phase real=%4.2f cat=%s",
 908             yaz_timing_get_real(timing),
 909             (cat == zinfo_index_category_sort) ? "sort" : "index");
 910     yaz_timing_start(timing);
 911     for (spec = spec_list, i = 0; i < no_ord; i++, spec = spec->next)
 912     {
 913         int j;
 914         NMEM nmem = nmem_create();
 915         struct term_collect *col;
 916         int no_collect_terms = 20;
 917
 918         if (spec->extra)
 919             no_collect_terms = atoi(spec->extra);
 920         if (no_collect_terms < 1)
 921             no_collect_terms = 1;
 922         col = term_collect_create(map_array[i], no_collect_terms, nmem);
 923         term_collect_freq(zh, col, no_collect_terms, ord_array[i],
 924                           resultSetRef(zh, fi->setname),
 925                           cat == zinfo_index_category_sort ? 1.0 : -1.0);
 926
 927         if (use_xml)
 928             wrbuf_printf(wr, "  <facet type=\"%s\" index=\"%s\">\n",
 929                          spec->index_type, spec->index_name);
 930         else
 931             wrbuf_printf(wr, "facet %s %s\n",
 932                          spec->index_type, spec->index_name);
 933         for (j = 0; j < no_collect_terms; j++)
 934         {
 935             if (col[j].term)
 936             {
 937                 char dst_buf[IT_MAX_WORD];
 938                 zebra_term_untrans(zh, spec->index_type, dst_buf, col[j].term);
 939                 if (use_xml)
 940                 {
 941                     wrbuf_printf(wr, "    <term coccur=\"%d\"", col[j].oc);
 942                     if (col[j].set_occur)
 943                         wrbuf_printf(wr, " occur=\"" ZINT_FORMAT "\"",
 944                                      col[j].set_occur);
 945                     wrbuf_printf(wr, ">");
 946                     wrbuf_xmlputs(wr, dst_buf);
 947                     wrbuf_printf(wr, "</term>\n");
 948                 }
 949                 else
 950                 {
 951                     wrbuf_printf(wr, "term %d", col[j].oc);
 952                     if (col[j].set_occur)
 953                         wrbuf_printf(wr, " " ZINT_FORMAT,
 954                                      col[j].set_occur);
 955                     wrbuf_printf(wr, ": %s\n", dst_buf);
 956                 }
 957             }
 958         }
 959         if (use_xml)
 960             wrbuf_puts(wr, "  </facet>\n");
 961         nmem_destroy(nmem);
 962     }
 963     for (i = 0; i < no_ord; i++)
 964         zebra_strmap_destroy(map_array[i]);
 965     yaz_timing_stop(timing);
 966     yaz_log(YLOG_LOG, "facet second phase real=%4.2f",
 967             yaz_timing_get_real(timing));
 968     yaz_timing_destroy(&timing);
 969     return ret;
 970 }
 971
 972 static int facet_fetch(
 973     struct special_fetch_s *fi, const char *elemsetname,
 974     const Odr_oid *input_format,
 975     const Odr_oid **output_format,
 976     WRBUF result, WRBUF addinfo)
 977 {
 978     zint *pos_array;
 979     int i;
 980     int num_recs = 10; /* number of records to analyze */
 981     ZebraMetaRecord *poset;
 982     ZEBRA_RES ret = ZEBRA_OK;
 983     int *ord_array;
 984     int use_xml = 0;
 985     int no_ord = 0;
 986     struct index_spec *spec, *spec_list;
 987     int error;
 988     ZebraHandle zh = fi->zh;
 989     /* whether sort or index based */
 990     zinfo_index_category_t cat = zinfo_index_category_sort;
 991
 992     /* see if XML is required for response */
 993     if (oid_oidcmp(input_format, yaz_oid_recsyn_xml) == 0)
 994         use_xml = 1;
 995
 996     spec_list = parse_index_spec(elemsetname, fi->nmem, &error);
 997
 998     if (!spec_list || error)
 999     {
1000         return YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
1001     }
1002
1003     for (spec = spec_list; spec; spec = spec->next)
1004     {
1005         if (!spec->index_type)
1006             return YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
1007         no_ord++;
1008     }
1009
1010     /* try to see if all specs are sort based.. If not, try the
1011        index based ones */
1012     ord_array = nmem_malloc(fi->nmem, sizeof(*ord_array) * no_ord);
1013
1014     for (spec = spec_list, i = 0; spec; spec = spec->next, i++)
1015     {
1016         int ord = zebraExplain_lookup_attr_str(zh->reg->zei,
1017                                                zinfo_index_category_sort,
1018                                                spec->index_type,
1019                                                spec->index_name);
1020         if (ord == -1)
1021             break;
1022         ord_array[i] = ord;
1023         num_recs = 10000;
1024     }
1025     if (spec)
1026     {
1027         cat = zinfo_index_category_index;
1028         for (spec = spec_list, i = 0; spec; spec = spec->next, i++)
1029         {
1030             int ord = zebraExplain_lookup_attr_str(zh->reg->zei,
1031                                                    zinfo_index_category_index,
1032                                                    spec->index_type,
1033                                                    spec->index_name);
1034             if (ord == -1)
1035                 break;
1036             ord_array[i] = ord;
1037
1038         }
1039     }
1040     if (spec)
1041         return YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
1042
1043     res_get_int(zh->res, "facetNumRecs", &num_recs);
1044
1045     pos_array = (zint *) nmem_malloc(fi->nmem, num_recs * sizeof(*pos_array));
1046     for (i = 0; i < num_recs; i++)
1047         pos_array[i] = i+1;
1048     poset = zebra_meta_records_create(zh, fi->setname, num_recs, pos_array);
1049     if (!poset)
1050     {
1051         wrbuf_puts(addinfo, fi->setname);
1052         return YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST;
1053     }
1054     else
1055     {
1056         if (use_xml)
1057         {
1058             wrbuf_printf(result, ZEBRA_XML_HEADER_STR ">\n");
1059         }
1060         ret = perform_facet(zh, fi, result, num_recs, poset,
1061                             spec_list, no_ord, ord_array, use_xml,
1062                             cat);
1063         if (use_xml)
1064             wrbuf_puts(result, "</record>\n");
1065     }
1066     *output_format = yaz_oid_recsyn_xml;
1067     zebra_meta_records_destroy(zh, poset, num_recs);
1068     return ret;
1069 }
1070
1071
1072 static int zebra_special_fetch(
1073     void *handle, const char *elemsetname,
1074     const Odr_oid *input_format,
1075     const Odr_oid **output_format,
1076     WRBUF result, WRBUF addinfo)
1077 {
1078     Record rec = 0;
1079     struct special_fetch_s *fi = (struct special_fetch_s *) handle;
1080     ZebraHandle zh = fi->zh;
1081     zint sysno = fi->sysno;
1082
1083     /* processing zebra::facet */
1084     if (elemsetname && 0 == strncmp(elemsetname, "facet", 5))
1085     {
1086         return facet_fetch(fi, elemsetname + 5,
1087                            input_format, output_format,
1088                            result, addinfo);
1089     }
1090
1091     if (elemsetname && 0 == strcmp(elemsetname, "snippet"))
1092     {
1093         return snippet_fetch(fi, elemsetname + 7,
1094                              input_format, output_format,
1095                              result, addinfo);
1096     }
1097
1098     /* processing zebra::meta::sysno  */
1099     if (elemsetname && 0 == strcmp(elemsetname, "meta::sysno"))
1100     {
1101         int ret = 0;
1102         if (!oid_oidcmp(input_format, yaz_oid_recsyn_sutrs))
1103         {
1104             wrbuf_printf(result, ZINT_FORMAT, fi->sysno);
1105             *output_format = input_format;
1106         }
1107         else if (!oid_oidcmp(input_format, yaz_oid_recsyn_xml))
1108         {
1109             wrbuf_printf(result, ZEBRA_XML_HEADER_STR
1110                          " sysno=\"" ZINT_FORMAT "\"/>\n",
1111                          fi->sysno);
1112             *output_format = input_format;
1113         }
1114         else
1115             ret = YAZ_BIB1_NO_SYNTAXES_AVAILABLE_FOR_THIS_REQUEST;
1116         return ret;
1117     }
1118
1119     /* processing special elementsetname zebra::index:: for sort elements */
1120     if (elemsetname && 0 == strncmp(elemsetname, "index", 5))
1121     {
1122         int ret = sort_fetch(
1123             fi, elemsetname + 5,
1124             input_format, output_format,
1125             result, addinfo);
1126         if (ret != -1)
1127             return ret;
1128         /* not a sort index so we continue to get the full record */
1129     }
1130
1131
1132     /* fetching binary record up for all other display elementsets */
1133     rec = rec_get(zh->reg->records, sysno);
1134     if (!rec)
1135     {
1136         yaz_log(YLOG_WARN, "rec_get fail on sysno=" ZINT_FORMAT, sysno);
1137         return YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1138     }
1139
1140     /* processing special elementsetnames zebra::data */
1141     if (elemsetname && 0 == strcmp(elemsetname, "data"))
1142     {
1143         struct ZebraRecStream stream;
1144         RecordAttr *recordAttr = rec_init_attr(zh->reg->zei, rec);
1145         char *b;
1146
1147         zebra_create_record_stream(zh, &rec, &stream);
1148         *output_format = input_format;
1149
1150         b = nmem_malloc(fi->nmem, recordAttr->recordSize);
1151         stream.readf(&stream, b, recordAttr->recordSize);
1152         wrbuf_write(result, b, recordAttr->recordSize);
1153
1154         stream.destroy(&stream);
1155         rec_free(&rec);
1156         return 0;
1157     }
1158
1159     /* processing special elementsetnames zebra::meta:: */
1160     if (elemsetname && 0 == strcmp(elemsetname, "meta"))
1161     {
1162         int ret = 0;
1163         RecordAttr *recordAttr = rec_init_attr(zh->reg->zei, rec);
1164
1165         if (!oid_oidcmp(input_format, yaz_oid_recsyn_xml))
1166         {
1167             *output_format = input_format;
1168
1169             wrbuf_printf(result, ZEBRA_XML_HEADER_STR
1170                          " sysno=\"" ZINT_FORMAT "\"", sysno);
1171             retrieve_puts_attr(result, "base", rec->info[recInfo_databaseName]);
1172             retrieve_puts_attr(result, "file", rec->info[recInfo_filename]);
1173             retrieve_puts_attr(result, "type", rec->info[recInfo_fileType]);
1174             if (fi->score >= 0)
1175                 retrieve_puts_attr_int(result, "score", fi->score);
1176
1177             wrbuf_printf(result,
1178                          " rank=\"" ZINT_FORMAT "\""
1179                          " size=\"%i\""
1180                          " set=\"zebra::%s\"/>\n",
1181                          recordAttr->staticrank,
1182                          recordAttr->recordSize,
1183                          elemsetname);
1184         }
1185         else if (!oid_oidcmp(input_format, yaz_oid_recsyn_sutrs))
1186         {
1187             *output_format = input_format;
1188             wrbuf_printf(result, "sysno " ZINT_FORMAT "\n", sysno);
1189             retrieve_puts_str(result, "base", rec->info[recInfo_databaseName]);
1190             retrieve_puts_str(result, "file", rec->info[recInfo_filename]);
1191             retrieve_puts_str(result, "type", rec->info[recInfo_fileType]);
1192             if (fi->score >= 0)
1193                 retrieve_puts_int(result, "score", fi->score);
1194
1195             wrbuf_printf(result,
1196                          "rank " ZINT_FORMAT "\n"
1197                          "size %i\n"
1198                          "set zebra::%s\n",
1199                          recordAttr->staticrank,
1200                          recordAttr->recordSize,
1201                          elemsetname);
1202         }
1203         else
1204             ret = YAZ_BIB1_NO_SYNTAXES_AVAILABLE_FOR_THIS_REQUEST;
1205
1206         rec_free(&rec);
1207         return ret;
1208     }
1209
1210     /* processing special elementsetnames zebra::index:: */
1211     if (elemsetname && 0 == strncmp(elemsetname, "index", 5))
1212     {
1213         int ret = special_index_fetch(
1214             fi, elemsetname + 5,
1215             input_format, output_format,
1216             result, addinfo, rec);
1217         rec_free(&rec);
1218         return ret;
1219     }
1220
1221     if (rec)
1222         rec_free(&rec);
1223     return YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
1224 }
1225
1226 int zebra_record_fetch(ZebraHandle zh, const char *setname,
1227                        zint sysno, int score,
1228                        ODR odr,
1229                        const Odr_oid *input_format, Z_RecordComposition *comp,
1230                        const Odr_oid **output_format,
1231                        char **rec_bufp, int *rec_lenp, char **basenamep,
1232                        WRBUF addinfo_w)
1233 {
1234     Record rec;
1235     char *fname, *file_type, *basename;
1236     const char *elemsetname;
1237     struct ZebraRecStream stream;
1238     RecordAttr *recordAttr;
1239     void *clientData;
1240     int return_code = 0;
1241     zint sysnos[MAX_SYSNOS_PER_RECORD];
1242     int no_sysnos = MAX_SYSNOS_PER_RECORD;
1243     ZEBRA_RES res;
1244     struct special_fetch_s fetch_info;
1245
1246     res = zebra_result_recid_to_sysno(zh, setname, sysno, sysnos, &no_sysnos);
1247     if (res != ZEBRA_OK)
1248         return ZEBRA_FAIL;
1249
1250     sysno = sysnos[0];
1251     *basenamep = 0;
1252     elemsetname = yaz_get_esn(comp);
1253
1254     fetch_info.zh = zh;
1255     fetch_info.setname = setname;
1256     fetch_info.sysno = sysno;
1257     fetch_info.score = score;
1258     fetch_info.nmem = odr->mem;
1259
1260     /* processing zebra special elementset names of form 'zebra:: */
1261     if (elemsetname && 0 == strncmp(elemsetname, "zebra::", 7))
1262     {
1263         WRBUF result = wrbuf_alloc();
1264         int r = zebra_special_fetch(&fetch_info, elemsetname + 7,
1265                                     input_format, output_format,
1266                                     result, addinfo_w);
1267         if (r == 0)
1268         {
1269             *rec_bufp = odr_strdup(odr, wrbuf_cstr(result));
1270             *rec_lenp = wrbuf_len(result);
1271         }
1272         wrbuf_destroy(result);
1273         return r;
1274     }
1275
1276     /* processing all other element set names */
1277     rec = rec_get(zh->reg->records, sysno);
1278     if (!rec)
1279     {
1280         yaz_log(YLOG_WARN, "rec_get fail on sysno=" ZINT_FORMAT, sysno);
1281         *basenamep = 0;
1282         return YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1283     }
1284
1285
1286     recordAttr = rec_init_attr(zh->reg->zei, rec);
1287
1288     file_type = rec->info[recInfo_fileType];
1289     fname = rec->info[recInfo_filename];
1290     basename = rec->info[recInfo_databaseName];
1291     *basenamep = (char *) odr_malloc(odr, strlen(basename)+1);
1292     strcpy(*basenamep, basename);
1293
1294     yaz_log(YLOG_DEBUG, "retrieve localno=" ZINT_FORMAT " score=%d",
1295             sysno, score);
1296
1297     return_code = zebra_create_record_stream(zh, &rec, &stream);
1298
1299     if (rec)
1300     {
1301         RecType rt;
1302         struct recRetrieveCtrl retrieveCtrl;
1303
1304         retrieveCtrl.stream = &stream;
1305         retrieveCtrl.fname = fname;
1306         retrieveCtrl.localno = sysno;
1307         retrieveCtrl.staticrank = recordAttr->staticrank;
1308         retrieveCtrl.score = score;
1309         retrieveCtrl.recordSize = recordAttr->recordSize;
1310         retrieveCtrl.odr = odr;
1311         retrieveCtrl.input_format = retrieveCtrl.output_format = input_format;
1312         retrieveCtrl.comp = comp;
1313         retrieveCtrl.encoding = zh->record_encoding;
1314         retrieveCtrl.diagnostic = 0;
1315         retrieveCtrl.addinfo = 0;
1316         retrieveCtrl.dh = zh->reg->dh;
1317         retrieveCtrl.res = zh->res;
1318         retrieveCtrl.rec_buf = 0;
1319         retrieveCtrl.rec_len = -1;
1320         retrieveCtrl.handle = &fetch_info;
1321         retrieveCtrl.special_fetch = zebra_special_fetch;
1322
1323         if (!(rt = recType_byName(zh->reg->recTypes, zh->res,
1324                                   file_type, &clientData)))
1325         {
1326             wrbuf_printf(addinfo_w, "Could not handle record type %.40s",
1327                          file_type);
1328             return_code = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
1329         }
1330         else
1331         {
1332             (*rt->retrieve)(clientData, &retrieveCtrl);
1333             return_code = retrieveCtrl.diagnostic;
1334
1335             *output_format = retrieveCtrl.output_format;
1336             *rec_bufp = (char *) retrieveCtrl.rec_buf;
1337             *rec_lenp = retrieveCtrl.rec_len;
1338             if (retrieveCtrl.addinfo)
1339                 wrbuf_puts(addinfo_w, retrieveCtrl.addinfo);
1340         }
1341
1342         stream.destroy(&stream);
1343         rec_free(&rec);
1344     }
1345
1346     return return_code;
1347 }
1348
1349 /*
1350  * Local variables:
1351  * c-basic-offset: 4
1352  * c-file-style: "Stroustrup"
1353  * indent-tabs-mode: nil
1354  * End:
1355  * vim: shiftwidth=4 tabstop=8 expandtab
1356  */
1357