1 /* This file is part of the Zebra server.
2 Copyright (C) 1995-2008 Index Data
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
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
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
31 #include <yaz/diagbib1.h>
34 #define ZSET_SORT_MAX_LEVEL 10
36 struct zebra_set_term_entry {
47 NMEM rset_nmem; /* for creating the rsets in */
50 const char **basenames;
52 Z_SortKeySpecList *sortSpec;
53 struct zset_sort_info *sort_info;
54 struct zebra_set_term_entry *term_entries;
56 struct zebra_set *next;
58 int estimated_hit_count;
60 zint cache_position; /* last position */
61 RSFD cache_rfd; /* rfd (NULL if not existing) */
62 zint cache_psysno; /* sysno for last position */
63 zint approx_limit; /* limit before we do approx */
66 struct zset_sort_entry {
71 struct zset_sort_info {
74 struct zset_sort_entry *all_entries;
75 struct zset_sort_entry **entries;
78 static int log_level_set=0;
79 static int log_level_sort=0;
80 static int log_level_searchhits=0;
81 static int log_level_searchterms=0;
82 static int log_level_resultsets=0;
84 static void loglevels(void)
88 log_level_sort = yaz_log_module_level("sorting");
89 log_level_searchhits = yaz_log_module_level("searchhits");
90 log_level_searchterms = yaz_log_module_level("searchterms");
91 log_level_resultsets = yaz_log_module_level("resultsets");
96 static ZEBRA_RES resultSetSearch(ZebraHandle zh, NMEM nmem, NMEM rset_nmem,
97 Z_RPNQuery *rpn, ZebraSet sset)
100 Z_SortKeySpecList *sort_sequence;
102 ZEBRA_RES res = ZEBRA_OK;
104 sort_sequence = (Z_SortKeySpecList *)
105 nmem_malloc(nmem, sizeof(*sort_sequence));
106 sort_sequence->num_specs = 10; /* FIXME - Hard-coded number */
107 sort_sequence->specs = (Z_SortKeySpec **)
108 nmem_malloc(nmem, sort_sequence->num_specs *
109 sizeof(*sort_sequence->specs));
110 for (i = 0; i<sort_sequence->num_specs; i++)
111 sort_sequence->specs[i] = 0;
113 rpn_get_top_approx_limit(zh, rpn->RPNStructure, &sset->approx_limit);
115 res = rpn_search_top(zh, rpn->RPNStructure, rpn->attributeSetId,
118 sset->num_bases, sset->basenames,
125 for (i = 0; sort_sequence->specs[i]; i++)
127 sort_sequence->num_specs = i;
128 rset->hits_limit = sset->approx_limit;
131 res = resultSetRank(zh, sset, rset, rset_nmem);
135 res = resultSetSortSingle(zh, nmem, sset, rset,
136 sort_sequence, &sort_status);
143 ZEBRA_RES resultSetAddRPN(ZebraHandle zh, NMEM m, Z_RPNQuery *rpn,
144 int num_bases, char **basenames,
146 zint *hits, int *estimated_hit_count)
153 *estimated_hit_count = 0;
155 zebraSet = resultSetAdd(zh, setname, 1);
158 zebraSet->locked = 1;
161 zebraSet->rset_nmem = nmem_create();
163 zebraSet->num_bases = num_bases;
164 zebraSet->basenames =
165 nmem_malloc(zebraSet->nmem, num_bases * sizeof(*zebraSet->basenames));
166 for (i = 0; i<num_bases; i++)
167 zebraSet->basenames[i] = nmem_strdup(zebraSet->nmem, basenames[i]);
169 res = resultSetSearch(zh, zebraSet->nmem, zebraSet->rset_nmem,
171 *hits = zebraSet->hits;
172 if (zebraSet->estimated_hit_count)
173 *estimated_hit_count = 1;
177 zebraSet->locked = 0;
183 void resultSetAddTerm(ZebraHandle zh, ZebraSet s, int reg_type,
184 const char *db, const char *index_name,
187 assert(zh); /* compiler shut up */
189 s->nmem = nmem_create();
190 if (!s->term_entries)
193 s->term_entries_max = 1000;
195 nmem_malloc(s->nmem, s->term_entries_max *
196 sizeof(*s->term_entries));
197 for (i = 0; i < s->term_entries_max; i++)
198 s->term_entries[i].term = 0;
200 if (s->hits < s->term_entries_max)
202 s->term_entries[s->hits].reg_type = reg_type;
203 s->term_entries[s->hits].db = nmem_strdup(s->nmem, db);
204 s->term_entries[s->hits].index_name = nmem_strdup(s->nmem, index_name);
205 s->term_entries[s->hits].term = nmem_strdup(s->nmem, term);
210 ZebraSet resultSetAdd(ZebraHandle zh, const char *name, int ov)
215 for (s = zh->sets; s; s = s->next)
216 if (!strcmp(s->name, name))
223 yaz_log(log_level_resultsets, "updating result set %s", name);
224 if (!ov || s->locked)
229 rset_close(s->cache_rfd);
230 rset_delete(s->rset);
233 nmem_destroy(s->rset_nmem);
235 nmem_destroy(s->nmem);
239 const char *sort_max_str = zebra_get_resource(zh, "sortmax", "1000");
241 yaz_log(log_level_resultsets, "adding result set %s", name);
242 s = (ZebraSet) xmalloc(sizeof(*s));
245 s->name = xstrdup(name);
247 s->sort_info = (struct zset_sort_info *)
248 xmalloc(sizeof(*s->sort_info));
249 s->sort_info->max_entries = atoi(sort_max_str);
250 if (s->sort_info->max_entries < 2)
251 s->sort_info->max_entries = 2;
253 s->sort_info->entries = (struct zset_sort_entry **)
254 xmalloc(sizeof(*s->sort_info->entries) *
255 s->sort_info->max_entries);
256 s->sort_info->all_entries = (struct zset_sort_entry *)
257 xmalloc(sizeof(*s->sort_info->all_entries) *
258 s->sort_info->max_entries);
259 for (i = 0; i < s->sort_info->max_entries; i++)
260 s->sort_info->entries[i] = s->sort_info->all_entries + i;
270 s->cache_position = 0;
272 s->approx_limit = zh->approx_limit;
273 s->estimated_hit_count = 0;
277 ZebraSet resultSetGet(ZebraHandle zh, const char *name)
281 for (s = zh->sets; s; s = s->next)
282 if (!strcmp(s->name, name))
284 if (!s->term_entries && !s->rset && s->rpn)
286 NMEM nmem = nmem_create();
287 yaz_log(log_level_resultsets, "research %s", name);
289 s->rset_nmem = nmem_create();
290 resultSetSearch(zh, nmem, s->rset_nmem, s->rpn, s);
291 if (s->rset && s->sortSpec)
294 yaz_log(log_level_resultsets, "resort %s", name);
295 resultSetSortSingle(zh, nmem, s, s->rset, s->sortSpec,
305 ZEBRA_RES resultSetGetBaseNames(ZebraHandle zh, const char *setname,
306 const char ***basenames, int *num_bases)
308 ZebraSet sset = resultSetGet(zh, setname);
311 *basenames = sset->basenames;
312 *num_bases = sset->num_bases;
317 void resultSetInvalidate(ZebraHandle zh)
319 ZebraSet s = zh->sets;
321 yaz_log(log_level_resultsets, "invalidating result sets");
322 for (; s; s = s->next)
327 rset_close(s->cache_rfd);
328 rset_delete(s->rset);
332 s->cache_position = 0;
334 nmem_destroy(s->rset_nmem);
339 void resultSetDestroy(ZebraHandle zh, int num, char **names,int *statuses)
341 ZebraSet * ss = &zh->sets;
345 for (i = 0; i<num; i++)
346 statuses[i] = Z_DeleteStatus_resultSetDidNotExist;
353 for (i = 0; i<num; i++)
354 if (!strcmp(s->name, names[i]))
357 statuses[i] = Z_DeleteStatus_success;
366 xfree(s->sort_info->all_entries);
367 xfree(s->sort_info->entries);
371 nmem_destroy(s->nmem);
375 rset_close(s->cache_rfd);
376 rset_delete(s->rset);
379 nmem_destroy(s->rset_nmem);
388 ZebraMetaRecord *zebra_meta_records_create_range(ZebraHandle zh,
393 zint *pos = pos_small;
397 if (num > 10000 || num <= 0)
401 pos = xmalloc(sizeof(*pos) * num);
403 for (i = 0; i<num; i++)
406 mr = zebra_meta_records_create(zh, name, num, pos);
413 ZebraMetaRecord *zebra_meta_records_create(ZebraHandle zh, const char *name,
414 int num, zint *positions)
417 ZebraMetaRecord *sr = 0;
420 struct zset_sort_info *sort_info;
421 size_t sysno_mem_index = 0;
423 if (zh->m_staticrank)
428 if (!(sset = resultSetGet(zh, name)))
430 if (!(rset = sset->rset))
432 if (!sset->term_entries)
434 sr = (ZebraMetaRecord *) xmalloc(sizeof(*sr) * num);
435 for (i = 0; i<num; i++)
442 if (positions[i] <= sset->term_entries_max)
444 sr[i].term = sset->term_entries[positions[i]-1].term;
445 sr[i].db = sset->term_entries[positions[i]-1].db;
451 sr = (ZebraMetaRecord *) xmalloc(sizeof(*sr) * num);
452 for (i = 0; i<num; i++)
459 sort_info = sset->sort_info;
464 for (i = 0; i<num; i++)
466 position = positions[i];
467 if (position > 0 && position <= sort_info->num_entries)
469 yaz_log(log_level_sort, "got pos=" ZINT_FORMAT
470 " (sorted)", position);
471 sr[i].sysno = sort_info->entries[position-1]->sysno;
472 sr[i].score = sort_info->entries[position-1]->score;
476 /* did we really get all entries using sort ? */
477 for (i = 0; i<num; i++)
482 if (i < num) /* nope, get the rest, unsorted - sorry */
491 position = sort_info->num_entries;
492 while (num_i < num && positions[num_i] <= position)
495 if (sset->cache_rfd &&
496 num_i < num && positions[num_i] > sset->cache_position)
498 position = sset->cache_position;
499 rfd = sset->cache_rfd;
500 psysno = sset->cache_psysno;
505 rset_close(sset->cache_rfd);
506 rfd = rset_open(rset, RSETF_READ);
508 while (num_i < num && rset_read(rfd, &key, 0))
510 zint this_sys = key.mem[sysno_mem_index];
511 if (this_sys != psysno)
516 /* determine we alreay have this in our set */
517 for (i = sort_info->num_entries; --i >= 0; )
518 if (psysno == sort_info->entries[i]->sysno)
525 if (position == positions[num_i])
527 sr[num_i].sysno = psysno;
528 yaz_log(log_level_sort, "got pos=" ZINT_FORMAT " (unsorted)", position);
529 sr[num_i].score = -1;
534 sset->cache_position = position;
535 sset->cache_psysno = psysno;
536 sset->cache_rfd = rfd;
542 void zebra_meta_records_destroy(ZebraHandle zh, ZebraMetaRecord *records,
545 assert(zh); /* compiler shut up about unused arg */
553 const char *index_type;
556 void resultSetInsertSort(ZebraHandle zh, ZebraSet sset,
557 struct sortKeyInfo *criteria, int num_criteria,
559 char *cmp_buf[], char *tmp_cmp_buf[])
561 struct zset_sort_entry *new_entry = NULL;
562 struct zset_sort_info *sort_info = sset->sort_info;
565 zebra_sort_sysno(zh->reg->sort_index, sysno);
566 for (i = 0; i<num_criteria; i++)
568 char *this_entry_buf = tmp_cmp_buf[i];
569 memset(this_entry_buf, '\0', SORT_IDX_ENTRYSIZE);
570 if (criteria[i].ord != -1)
572 zebra_sort_type(zh->reg->sort_index, criteria[i].ord);
573 zebra_sort_read(zh->reg->sort_index, this_entry_buf);
576 i = sort_info->num_entries;
580 for (j = 0; j<num_criteria; j++)
582 char *this_entry_buf = tmp_cmp_buf[j];
583 char *other_entry_buf =
584 cmp_buf[j] + i * SORT_IDX_ENTRYSIZE;
585 if (criteria[j].numerical)
587 char this_entry_org[1024];
588 char other_entry_org[1024];
590 const char *index_type = criteria[j].index_type;
591 zebra_term_untrans(zh, index_type, this_entry_org,
593 zebra_term_untrans(zh, index_type, other_entry_org,
595 diff = atof(this_entry_org) - atof(other_entry_org);
606 rel = memcmp(this_entry_buf, other_entry_buf,
614 if (criteria[j].relation == 'A')
619 else if (criteria[j].relation == 'D')
626 j = sort_info->max_entries;
630 if (sort_info->num_entries == j)
633 j = (sort_info->num_entries)++;
634 new_entry = sort_info->entries[j];
638 for (k = 0; k<num_criteria; k++)
640 char *j_buf = cmp_buf[k] + j * SORT_IDX_ENTRYSIZE;
641 char *j_1_buf = cmp_buf[k] + (j-1) * SORT_IDX_ENTRYSIZE;
642 memcpy(j_buf, j_1_buf, SORT_IDX_ENTRYSIZE);
644 sort_info->entries[j] = sort_info->entries[j-1];
647 sort_info->entries[i] = new_entry;
649 for (i = 0; i<num_criteria; i++)
651 char *new_entry_buf = cmp_buf[i] + j * SORT_IDX_ENTRYSIZE;
652 char *this_entry_buf = tmp_cmp_buf[i];
653 memcpy(new_entry_buf, this_entry_buf, SORT_IDX_ENTRYSIZE);
655 new_entry->sysno = sysno;
656 new_entry->score = -1;
659 void resultSetInsertRank(ZebraHandle zh, struct zset_sort_info *sort_info,
660 zint sysno, int score, int relation)
662 struct zset_sort_entry *new_entry = NULL;
664 assert(zh); /* compiler shut up about unused arg */
666 i = sort_info->num_entries;
671 rel = score - sort_info->entries[i]->score;
678 else if (relation == 'A')
685 j = sort_info->max_entries;
689 if (sort_info->num_entries == j)
692 j = (sort_info->num_entries)++;
694 new_entry = sort_info->entries[j];
697 sort_info->entries[j] = sort_info->entries[j-1];
700 sort_info->entries[i] = new_entry;
702 new_entry->sysno = sysno;
703 new_entry->score = score;
706 static Z_RPNQuery *copy_RPNQuery(Z_RPNQuery *src, NMEM nmem)
709 ODR encode = odr_createmem(ODR_ENCODE);
710 ODR decode = odr_createmem(ODR_DECODE);
712 if (z_RPNQuery(encode, &src, 0, 0))
715 char *buf = odr_getbuf(encode, &len, 0);
719 odr_setbuf(decode, buf, len, 0);
720 z_RPNQuery(decode, &dst, 0, 0);
723 nmem_transfer(nmem, decode->mem);
729 static Z_SortKeySpecList *copy_SortKeySpecList(Z_SortKeySpecList *src, NMEM nmem)
731 Z_SortKeySpecList *dst = 0;
732 ODR encode = odr_createmem(ODR_ENCODE);
733 ODR decode = odr_createmem(ODR_DECODE);
735 if (z_SortKeySpecList(encode, &src, 0, 0))
738 char *buf = odr_getbuf(encode, &len, 0);
742 odr_setbuf(decode, buf, len, 0);
743 z_SortKeySpecList(decode, &dst, 0, 0);
746 nmem_transfer(nmem, decode->mem);
752 ZebraSet resultSetClone(ZebraHandle zh, const char *setname,
758 nset = resultSetAdd(zh, setname, 1);
762 nset->nmem = nmem_create();
764 nset->num_bases = rset->num_bases;
766 nmem_malloc(nset->nmem, nset->num_bases * sizeof(*rset->basenames));
767 for (i = 0; i<rset->num_bases; i++)
768 nset->basenames[i] = nmem_strdup(nset->nmem, rset->basenames[i]);
771 nset->rset = rset_dup(rset->rset);
773 nset->rpn = copy_RPNQuery(rset->rpn, nset->nmem);
777 ZEBRA_RES resultSetSort(ZebraHandle zh, NMEM nmem,
778 int num_input_setnames, const char **input_setnames,
779 const char *output_setname,
780 Z_SortKeySpecList *sort_sequence, int *sort_status)
785 if (num_input_setnames == 0)
787 zebra_setError(zh, YAZ_BIB1_NO_RESULT_SET_NAME_SUPPLIED_ON_SORT, 0);
790 if (num_input_setnames > 1)
792 zebra_setError(zh, YAZ_BIB1_SORT_TOO_MANY_INPUT_RESULTS, 0);
797 yaz_log(log_level_sort, "result set sort input=%s output=%s",
798 *input_setnames, output_setname);
799 sset = resultSetGet(zh, input_setnames[0]);
802 zebra_setError(zh, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST,
806 if (!(rset = sset->rset))
808 zebra_setError(zh, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST,
812 if (strcmp(output_setname, input_setnames[0]))
813 sset = resultSetClone(zh, output_setname, sset);
814 sset->sortSpec = copy_SortKeySpecList(sort_sequence, sset->nmem);
815 return resultSetSortSingle (zh, nmem, sset, rset, sort_sequence,
819 ZEBRA_RES resultSetSortSingle(ZebraHandle zh, NMEM nmem,
820 ZebraSet sset, RSET rset,
821 Z_SortKeySpecList *sort_sequence,
829 struct sortKeyInfo sort_criteria[ZSET_SORT_MAX_LEVEL];
830 char *cmp_buf[ZSET_SORT_MAX_LEVEL];
831 char *tmp_cmp_buf[ZSET_SORT_MAX_LEVEL];
837 size_t sysno_mem_index = 0;
839 if (zh->m_staticrank)
842 assert(nmem); /* compiler shut up about unused param */
843 sset->sort_info->num_entries = 0;
845 rset_getterms(rset, 0, 0, &n);
846 terms = (TERMID *) nmem_malloc(nmem, sizeof(*terms)*n);
847 rset_getterms(rset, terms, n, &numTerms);
850 num_criteria = sort_sequence->num_specs;
851 if (num_criteria > ZSET_SORT_MAX_LEVEL)
852 num_criteria = ZSET_SORT_MAX_LEVEL;
853 for (i = 0; i < num_criteria; i++)
855 Z_SortKeySpec *sks = sort_sequence->specs[i];
859 sort_criteria[i].ord = -1;
860 sort_criteria[i].numerical = 0;
862 if (sks->which == Z_SortKeySpec_missingValueData)
864 zebra_setError(zh, YAZ_BIB1_UNSUPP_MISSING_DATA_ACTION, 0);
867 if (*sks->sortRelation == Z_SortKeySpec_ascending)
868 sort_criteria[i].relation = 'A';
869 else if (*sks->sortRelation == Z_SortKeySpec_descending)
870 sort_criteria[i].relation = 'D';
873 zebra_setError(zh, YAZ_BIB1_ILLEGAL_SORT_RELATION, 0);
876 if (sks->sortElement->which == Z_SortElement_databaseSpecific)
878 zebra_setError(zh, YAZ_BIB1_DATABASE_SPECIFIC_SORT_UNSUPP, 0);
881 else if (sks->sortElement->which != Z_SortElement_generic)
883 zebra_setError(zh, YAZ_BIB1_SORT_ILLEGAL_SORT, 0);
886 sk = sks->sortElement->u.generic;
889 case Z_SortKey_sortField:
890 yaz_log(log_level_sort, "key %d is of type sortField",
892 sort_criteria[i].numerical = 0;
893 sort_criteria[i].ord =
894 zebraExplain_lookup_attr_str(zh->reg->zei,
895 zinfo_index_category_sort,
897 if (sks->which != Z_SortKeySpec_null
898 && sort_criteria[i].ord == -1)
901 YAZ_BIB1_CANNOT_SORT_ACCORDING_TO_SEQUENCE, 0);
905 case Z_SortKey_elementSpec:
906 yaz_log(log_level_sort, "key %d is of type elementSpec",
908 zebra_setError(zh, YAZ_BIB1_CANNOT_SORT_ACCORDING_TO_SEQUENCE, 0);
910 case Z_SortKey_sortAttributes:
911 yaz_log(log_level_sort, "key %d is of type sortAttributes", i+1);
912 res = zebra_sort_get_ord(zh, sk->u.sortAttributes,
914 &sort_criteria[i].ord,
915 &sort_criteria[i].numerical);
916 if (sks->which != Z_SortKeySpec_null && res != ZEBRA_OK)
920 if (zebraExplain_lookup_ord(zh->reg->zei, sort_criteria[i].ord,
921 &sort_criteria[i].index_type,
924 zebra_setError(zh, YAZ_BIB1_CANNOT_SORT_ACCORDING_TO_SEQUENCE, 0);
928 /* allocate space for each cmpare buf + one extra for tmp comparison */
929 for (i = 0; i<num_criteria; i++)
931 cmp_buf[i] = xmalloc(sset->sort_info->max_entries
932 * SORT_IDX_ENTRYSIZE);
933 tmp_cmp_buf[i] = xmalloc(SORT_IDX_ENTRYSIZE);
935 rfd = rset_open(rset, RSETF_READ);
936 while (rset_read(rfd, &key, &termid))
938 zint this_sys = key.mem[sysno_mem_index];
939 if (log_level_searchhits)
940 key_logdump_txt(log_level_searchhits, &key, termid->name);
942 if (this_sys != psysno)
944 if ((sset->hits & 255) == 0 && zh->break_handler_func)
946 if (zh->break_handler_func(zh->break_handler_data))
948 rset_set_hits_limit(rset, 0);
954 resultSetInsertSort(zh, sset,
955 sort_criteria, num_criteria, psysno, cmp_buf,
961 for (i = 0; i<num_criteria; i++)
964 xfree(tmp_cmp_buf[i]);
967 yaz_log(log_level_sort, ZINT_FORMAT " keys, " ZINT_FORMAT " sysnos, sort",
969 for (i = 0; i < numTerms; i++)
970 yaz_log(log_level_sort, "term=\"%s\" type=%s count=" ZINT_FORMAT,
971 terms[i]->name, terms[i]->flags, terms[i]->rset->hits_count);
972 *sort_status = Z_SortResponse_success;
976 RSET resultSetRef(ZebraHandle zh, const char *resultSetId)
980 if ((s = resultSetGet(zh, resultSetId)))
985 ZEBRA_RES resultSetRank(ZebraHandle zh, ZebraSet zebraSet,
986 RSET rset, NMEM nmem)
995 ZebraRankClass rank_class;
996 struct zset_sort_info *sort_info;
997 const char *rank_handler_name = res_get_def(zh->res, "rank", "rank-1");
998 size_t sysno_mem_index = 0;
1000 if (zh->m_staticrank)
1001 sysno_mem_index = 1;
1005 sort_info = zebraSet->sort_info;
1006 sort_info->num_entries = 0;
1008 zebraSet->estimated_hit_count = 0;
1009 rset_getterms(rset, 0, 0, &n);
1010 terms = (TERMID *) nmem_malloc(nmem, sizeof(*terms)*n);
1011 rset_getterms(rset, terms, n, &numTerms);
1013 rank_class = zebraRankLookup(zh, rank_handler_name);
1016 yaz_log(YLOG_WARN, "No such rank handler: %s", rank_handler_name);
1017 zebra_setError(zh, YAZ_BIB1_UNSUPP_SEARCH, "Cannot find rank handler");
1022 RSFD rfd = rset_open(rset, RSETF_READ);
1023 struct rank_control *rc = rank_class->control;
1026 void *handle = (*rc->begin) (zh->reg, rank_class->class_handle, rset,
1027 nmem, terms, numTerms);
1028 zint psysno = 0; /* previous doc id / sys no */
1029 zint pstaticrank = 0; /* previous static rank */
1031 while (rset_read(rfd, &key, &termid))
1033 zint this_sys = key.mem[sysno_mem_index];
1035 zint seqno = key.mem[key.len-1];
1037 if (log_level_searchhits)
1038 key_logdump_txt(log_level_searchhits, &key, termid->name);
1039 if (this_sys != psysno)
1040 { /* new record .. */
1041 if (!(rfd->counted_items & 255) && zh->break_handler_func)
1043 if (zh->break_handler_func(zh->break_handler_data))
1045 yaz_log(YLOG_LOG, "Aborted search");
1049 if (rfd->counted_items > rset->hits_limit)
1052 { /* only if we did have a previous record */
1053 score = (*rc->calc)(handle, psysno, pstaticrank,
1055 /* insert the hit. A=Ascending */
1056 resultSetInsertRank(zh, sort_info, psysno, score, 'A');
1061 zebraSet->estimated_hit_count = 1;
1062 rset_set_hits_limit(rset, 0);
1066 if (zh->m_staticrank)
1067 pstaticrank = key.mem[0];
1069 (*rc->add)(handle, CAST_ZINT_TO_INT(seqno), termid);
1073 { /* we had - at least - one record */
1074 score = (*rc->calc)(handle, psysno, pstaticrank, &stop_flag);
1075 /* insert the hit. A=Ascending */
1076 resultSetInsertRank(zh, sort_info, psysno, score, 'A');
1079 (*rc->end)(zh->reg, handle);
1082 zebraSet->hits = rset->hits_count;
1084 yaz_log(log_level_searchterms, ZINT_FORMAT " keys, "
1085 ZINT_FORMAT " sysnos, rank", kno, zebraSet->hits);
1086 for (i = 0; i < numTerms; i++)
1088 yaz_log(log_level_searchterms, "term=\"%s\" type=%s count="
1090 terms[i]->name, terms[i]->flags, terms[i]->rset->hits_count);
1095 ZebraRankClass zebraRankLookup(ZebraHandle zh, const char *name)
1097 ZebraRankClass p = zh->reg->rank_classes;
1098 while (p && strcmp(p->control->name, name))
1100 if (p && !p->init_flag)
1102 if (p->control->create)
1103 p->class_handle = (*p->control->create)(zh);
1109 void zebraRankInstall(struct zebra_register *reg, struct rank_control *ctrl)
1111 ZebraRankClass p = (ZebraRankClass) xmalloc(sizeof(*p));
1112 p->control = (struct rank_control *) xmalloc(sizeof(*p->control));
1113 memcpy(p->control, ctrl, sizeof(*p->control));
1114 p->control->name = xstrdup(ctrl->name);
1116 p->next = reg->rank_classes;
1117 reg->rank_classes = p;
1120 void zebraRankDestroy(struct zebra_register *reg)
1122 ZebraRankClass p = reg->rank_classes;
1125 ZebraRankClass p_next = p->next;
1126 if (p->init_flag && p->control->destroy)
1127 (*p->control->destroy)(reg, p->class_handle);
1128 xfree(p->control->name);
1133 reg->rank_classes = NULL;
1136 static int trav_rset_for_termids(RSET rset, TERMID *termid_array,
1137 zint *hits_array, int *approx_array)
1141 for (i = 0; i<rset->no_children; i++)
1142 no += trav_rset_for_termids(rset->children[i],
1143 (termid_array ? termid_array + no : 0),
1144 (hits_array ? hits_array + no : 0),
1145 (approx_array ? approx_array + no : 0));
1149 termid_array[no] = rset->term;
1151 hits_array[no] = rset->hits_count;
1153 approx_array[no] = rset->hits_approx;
1155 yaz_log(YLOG_LOG, "rset=%p term=%s limit=" ZINT_FORMAT
1156 " count=" ZINT_FORMAT,
1157 rset, rset->term->name, rset->hits_limit, rset->hits_count);
1164 ZEBRA_RES zebra_result_set_term_no(ZebraHandle zh, const char *setname,
1167 ZebraSet sset = resultSetGet(zh, setname);
1171 *num_terms = trav_rset_for_termids(sset->rset, 0, 0, 0);
1177 ZEBRA_RES zebra_result_set_term_info(ZebraHandle zh, const char *setname,
1178 int no, zint *count, int *approx,
1179 char *termbuf, size_t *termlen,
1180 const char **term_ref_id)
1182 ZebraSet sset = resultSetGet(zh, setname);
1185 int num_terms = trav_rset_for_termids(sset->rset, 0, 0, 0);
1186 if (no >= 0 && no < num_terms)
1188 TERMID *term_array = xmalloc(num_terms * sizeof(*term_array));
1189 zint *hits_array = xmalloc(num_terms * sizeof(*hits_array));
1190 int *approx_array = xmalloc(num_terms * sizeof(*approx_array));
1192 trav_rset_for_termids(sset->rset, term_array,
1193 hits_array, approx_array);
1196 *count = hits_array[no];
1198 *approx = approx_array[no];
1201 char *inbuf = term_array[no]->name;
1202 size_t inleft = strlen(inbuf);
1203 size_t outleft = *termlen - 1;
1205 if (zh->iconv_from_utf8 != 0)
1207 char *outbuf = termbuf;
1210 ret = yaz_iconv(zh->iconv_from_utf8, &inbuf, &inleft,
1212 if (ret == (size_t)(-1))
1216 yaz_iconv(zh->iconv_from_utf8, 0, 0,
1218 *termlen = outbuf - termbuf;
1223 if (inleft > outleft)
1226 memcpy(termbuf, inbuf, *termlen);
1228 termbuf[*termlen] = '\0';
1231 *term_ref_id = term_array[no]->ref_id;
1235 xfree(approx_array);
1242 ZEBRA_RES zebra_snippets_hit_vector(ZebraHandle zh, const char *setname,
1243 zint sysno, zebra_snippets *snippets)
1245 ZebraSet sset = resultSetGet(zh, setname);
1246 yaz_log(YLOG_DEBUG, "zebra_get_hit_vector setname=%s zysno=" ZINT_FORMAT,
1252 struct rset_key_control *kc = zebra_key_control_create(zh);
1253 NMEM nmem = nmem_create();
1255 RSET rsets[2], rset_comb;
1256 RSET rset_temp = rset_create_temp(nmem, kc, kc->scope,
1257 res_get(zh->res, "setTmpDir"),0 );
1260 RSFD rsfd = rset_open(rset_temp, RSETF_WRITE);
1267 rset_write(rsfd, &key);
1270 rsets[0] = rset_temp;
1271 rsets[1] = rset_dup(sset->rset);
1273 rset_comb = rset_create_and(nmem, kc, kc->scope, 2, rsets);
1275 rsfd = rset_open(rset_comb, RSETF_READ);
1277 while (rset_read(rsfd, &key, &termid))
1281 struct ord_list *ol;
1282 for (ol = termid->ol; ol; ol = ol->next)
1284 zebra_snippets_append(snippets, key.mem[key.len-1], 0,
1285 ol->ord, termid->name);
1291 rset_delete(rset_comb);
1298 static ZEBRA_RES zebra_recid_to_sysno(ZebraHandle zh,
1299 const char **basenames, int num_bases,
1301 zint *sysnos, int *no_sysnos)
1303 ZEBRA_RES res = ZEBRA_OK;
1304 int sysnos_offset = 0;
1307 if (!zh->reg->isamb || !zh->m_segment_indexing)
1309 if (sysnos_offset < *no_sysnos)
1315 for (i = 0; res == ZEBRA_OK && i < num_bases; i++)
1317 const char *database = basenames[i];
1318 if (zebraExplain_curDatabase(zh->reg->zei, database) == 0)
1320 const char *index_type = "w";
1321 const char *use_string = "_ALLRECORDS";
1323 zinfo_index_category_t cat = zinfo_index_category_alwaysmatches;
1324 ord = zebraExplain_lookup_attr_str(zh->reg->zei, cat,
1325 index_type, use_string);
1329 int ord_len = key_SU_encode(ord, ord_buf);
1332 ord_buf[ord_len] = '\0';
1334 info = dict_lookup(zh->reg->dict, ord_buf);
1337 if (*info != sizeof(ISAM_P))
1345 struct it_key key_until, key_found;
1349 memcpy(&isam_p, info+1, sizeof(ISAM_P));
1351 pt = isamb_pp_open(zh->reg->isamb, isam_p, 2);
1356 key_until.mem[i++] = recid;
1357 key_until.mem[i++] = 0; /* section_id */
1358 if (zh->m_segment_indexing)
1359 key_until.mem[i++] = 0; /* segment */
1360 key_until.mem[i++] = 0;
1363 r = isamb_pp_forward(pt, &key_found, &key_until);
1364 while (r && key_found.mem[0] == recid)
1366 if (sysnos_offset < *no_sysnos)
1367 sysnos[sysnos_offset++] =
1368 key_found.mem[key_found.len-1];
1369 r = isamb_pp_read(pt, &key_found);
1379 *no_sysnos = sysnos_offset;
1383 ZEBRA_RES zebra_result_recid_to_sysno(ZebraHandle zh,
1384 const char *setname,
1386 zint *sysnos, int *no_sysnos)
1388 const char **basenames;
1392 res = resultSetGetBaseNames(zh, setname, &basenames, &num_bases);
1393 if (res != ZEBRA_OK)
1396 return zebra_recid_to_sysno(zh, basenames, num_bases,
1397 recid, sysnos, no_sysnos);
1400 void zebra_count_set(ZebraHandle zh, RSET rset, zint *count,
1407 yaz_log(YLOG_DEBUG, "count_set");
1409 rset->hits_limit = approx_limit;
1412 rfd = rset_open(rset, RSETF_READ);
1413 while (rset_read(rfd, &key,0 /* never mind terms */))
1415 if (key.mem[0] != psysno)
1417 psysno = key.mem[0];
1418 if (rfd->counted_items >= rset->hits_limit)
1423 *count = rset->hits_count;
1430 * indent-tabs-mode: nil
1432 * vim: shiftwidth=4 tabstop=8 expandtab