1 /* $Id: zsets.c,v 1.128 2007-12-03 11:49:11 adam Exp $
2 Copyright (C) 1995-2007
5 This file is part of the Zebra server.
7 Zebra is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
34 #include <yaz/diagbib1.h>
37 #define ZSET_SORT_MAX_LEVEL 10
39 struct zebra_set_term_entry {
50 NMEM rset_nmem; /* for creating the rsets in */
53 const char **basenames;
55 Z_SortKeySpecList *sortSpec;
56 struct zset_sort_info *sort_info;
57 struct zebra_set_term_entry *term_entries;
59 struct zebra_set *next;
61 int estimated_hit_count;
63 zint cache_position; /* last position */
64 RSFD cache_rfd; /* rfd (NULL if not existing) */
65 zint cache_psysno; /* sysno for last position */
66 zint approx_limit; /* limit before we do approx */
69 struct zset_sort_entry {
74 struct zset_sort_info {
77 struct zset_sort_entry *all_entries;
78 struct zset_sort_entry **entries;
81 static int log_level_set=0;
82 static int log_level_sort=0;
83 static int log_level_searchhits=0;
84 static int log_level_searchterms=0;
85 static int log_level_resultsets=0;
87 static void loglevels(void)
91 log_level_sort = yaz_log_module_level("sorting");
92 log_level_searchhits = yaz_log_module_level("searchhits");
93 log_level_searchterms = yaz_log_module_level("searchterms");
94 log_level_resultsets = yaz_log_module_level("resultsets");
99 static ZEBRA_RES resultSetSearch(ZebraHandle zh, NMEM nmem, NMEM rset_nmem,
100 Z_RPNQuery *rpn, ZebraSet sset)
103 Z_SortKeySpecList *sort_sequence;
105 ZEBRA_RES res = ZEBRA_OK;
107 sort_sequence = (Z_SortKeySpecList *)
108 nmem_malloc(nmem, sizeof(*sort_sequence));
109 sort_sequence->num_specs = 10; /* FIXME - Hard-coded number */
110 sort_sequence->specs = (Z_SortKeySpec **)
111 nmem_malloc(nmem, sort_sequence->num_specs *
112 sizeof(*sort_sequence->specs));
113 for (i = 0; i<sort_sequence->num_specs; i++)
114 sort_sequence->specs[i] = 0;
116 rpn_get_top_approx_limit(zh, rpn->RPNStructure, &sset->approx_limit);
118 res = rpn_search_top(zh, rpn->RPNStructure, rpn->attributeSetId,
121 sset->num_bases, sset->basenames,
128 for (i = 0; sort_sequence->specs[i]; i++)
130 sort_sequence->num_specs = i;
131 rset->hits_limit = sset->approx_limit;
134 res = resultSetRank(zh, sset, rset, rset_nmem);
138 res = resultSetSortSingle(zh, nmem, sset, rset,
139 sort_sequence, &sort_status);
146 ZEBRA_RES resultSetAddRPN(ZebraHandle zh, NMEM m, Z_RPNQuery *rpn,
147 int num_bases, char **basenames,
149 zint *hits, int *estimated_hit_count)
156 *estimated_hit_count = 0;
158 zebraSet = resultSetAdd(zh, setname, 1);
161 zebraSet->locked = 1;
164 zebraSet->rset_nmem = nmem_create();
166 zebraSet->num_bases = num_bases;
167 zebraSet->basenames =
168 nmem_malloc(zebraSet->nmem, num_bases * sizeof(*zebraSet->basenames));
169 for (i = 0; i<num_bases; i++)
170 zebraSet->basenames[i] = nmem_strdup(zebraSet->nmem, basenames[i]);
172 res = resultSetSearch(zh, zebraSet->nmem, zebraSet->rset_nmem,
174 *hits = zebraSet->hits;
175 if (zebraSet->estimated_hit_count)
176 *estimated_hit_count = 1;
180 zebraSet->locked = 0;
186 void resultSetAddTerm(ZebraHandle zh, ZebraSet s, int reg_type,
187 const char *db, const char *index_name,
190 assert(zh); /* compiler shut up */
192 s->nmem = nmem_create();
193 if (!s->term_entries)
196 s->term_entries_max = 1000;
198 nmem_malloc(s->nmem, s->term_entries_max *
199 sizeof(*s->term_entries));
200 for (i = 0; i < s->term_entries_max; i++)
201 s->term_entries[i].term = 0;
203 if (s->hits < s->term_entries_max)
205 s->term_entries[s->hits].reg_type = reg_type;
206 s->term_entries[s->hits].db = nmem_strdup(s->nmem, db);
207 s->term_entries[s->hits].index_name = nmem_strdup(s->nmem, index_name);
208 s->term_entries[s->hits].term = nmem_strdup(s->nmem, term);
213 ZebraSet resultSetAdd(ZebraHandle zh, const char *name, int ov)
218 for (s = zh->sets; s; s = s->next)
219 if (!strcmp(s->name, name))
226 yaz_log(log_level_resultsets, "updating result set %s", name);
227 if (!ov || s->locked)
232 rset_close(s->cache_rfd);
233 rset_delete(s->rset);
236 nmem_destroy(s->rset_nmem);
238 nmem_destroy(s->nmem);
242 const char *sort_max_str = zebra_get_resource(zh, "sortmax", "1000");
244 yaz_log(log_level_resultsets, "adding result set %s", name);
245 s = (ZebraSet) xmalloc(sizeof(*s));
248 s->name = xstrdup(name);
250 s->sort_info = (struct zset_sort_info *)
251 xmalloc(sizeof(*s->sort_info));
252 s->sort_info->max_entries = atoi(sort_max_str);
253 if (s->sort_info->max_entries < 2)
254 s->sort_info->max_entries = 2;
256 s->sort_info->entries = (struct zset_sort_entry **)
257 xmalloc(sizeof(*s->sort_info->entries) *
258 s->sort_info->max_entries);
259 s->sort_info->all_entries = (struct zset_sort_entry *)
260 xmalloc(sizeof(*s->sort_info->all_entries) *
261 s->sort_info->max_entries);
262 for (i = 0; i < s->sort_info->max_entries; i++)
263 s->sort_info->entries[i] = s->sort_info->all_entries + i;
273 s->cache_position = 0;
275 s->approx_limit = zh->approx_limit;
276 s->estimated_hit_count = 0;
280 ZebraSet resultSetGet(ZebraHandle zh, const char *name)
284 for (s = zh->sets; s; s = s->next)
285 if (!strcmp(s->name, name))
287 if (!s->term_entries && !s->rset && s->rpn)
289 NMEM nmem = nmem_create();
290 yaz_log(log_level_resultsets, "research %s", name);
292 s->rset_nmem = nmem_create();
293 resultSetSearch(zh, nmem, s->rset_nmem, s->rpn, s);
294 if (s->rset && s->sortSpec)
297 yaz_log(log_level_resultsets, "resort %s", name);
298 resultSetSortSingle(zh, nmem, s, s->rset, s->sortSpec,
308 ZEBRA_RES resultSetGetBaseNames(ZebraHandle zh, const char *setname,
309 const char ***basenames, int *num_bases)
311 ZebraSet sset = resultSetGet(zh, setname);
314 *basenames = sset->basenames;
315 *num_bases = sset->num_bases;
320 void resultSetInvalidate(ZebraHandle zh)
322 ZebraSet s = zh->sets;
324 yaz_log(log_level_resultsets, "invalidating result sets");
325 for (; s; s = s->next)
330 rset_close(s->cache_rfd);
331 rset_delete(s->rset);
335 s->cache_position = 0;
337 nmem_destroy(s->rset_nmem);
342 void resultSetDestroy(ZebraHandle zh, int num, char **names,int *statuses)
344 ZebraSet * ss = &zh->sets;
348 for (i = 0; i<num; i++)
349 statuses[i] = Z_DeleteStatus_resultSetDidNotExist;
356 for (i = 0; i<num; i++)
357 if (!strcmp(s->name, names[i]))
360 statuses[i] = Z_DeleteStatus_success;
369 xfree(s->sort_info->all_entries);
370 xfree(s->sort_info->entries);
374 nmem_destroy(s->nmem);
378 rset_close(s->cache_rfd);
379 rset_delete(s->rset);
382 nmem_destroy(s->rset_nmem);
391 ZebraMetaRecord *zebra_meta_records_create_range(ZebraHandle zh,
396 zint *pos = pos_small;
400 if (num > 10000 || num <= 0)
404 pos = xmalloc(sizeof(*pos) * num);
406 for (i = 0; i<num; i++)
409 mr = zebra_meta_records_create(zh, name, num, pos);
416 ZebraMetaRecord *zebra_meta_records_create(ZebraHandle zh, const char *name,
417 int num, zint *positions)
420 ZebraMetaRecord *sr = 0;
423 struct zset_sort_info *sort_info;
424 size_t sysno_mem_index = 0;
426 if (zh->m_staticrank)
431 if (!(sset = resultSetGet(zh, name)))
433 if (!(rset = sset->rset))
435 if (!sset->term_entries)
437 sr = (ZebraMetaRecord *) xmalloc(sizeof(*sr) * num);
438 for (i = 0; i<num; i++)
445 if (positions[i] <= sset->term_entries_max)
447 sr[i].term = sset->term_entries[positions[i]-1].term;
448 sr[i].db = sset->term_entries[positions[i]-1].db;
454 sr = (ZebraMetaRecord *) xmalloc(sizeof(*sr) * num);
455 for (i = 0; i<num; i++)
462 sort_info = sset->sort_info;
467 for (i = 0; i<num; i++)
469 position = positions[i];
470 if (position > 0 && position <= sort_info->num_entries)
472 yaz_log(log_level_sort, "got pos=" ZINT_FORMAT
473 " (sorted)", position);
474 sr[i].sysno = sort_info->entries[position-1]->sysno;
475 sr[i].score = sort_info->entries[position-1]->score;
479 /* did we really get all entries using sort ? */
480 for (i = 0; i<num; i++)
485 if (i < num) /* nope, get the rest, unsorted - sorry */
494 position = sort_info->num_entries;
495 while (num_i < num && positions[num_i] <= position)
498 if (sset->cache_rfd &&
499 num_i < num && positions[num_i] > sset->cache_position)
501 position = sset->cache_position;
502 rfd = sset->cache_rfd;
503 psysno = sset->cache_psysno;
508 rset_close(sset->cache_rfd);
509 rfd = rset_open(rset, RSETF_READ);
511 while (num_i < num && rset_read(rfd, &key, 0))
513 zint this_sys = key.mem[sysno_mem_index];
514 if (this_sys != psysno)
519 /* determine we alreay have this in our set */
520 for (i = sort_info->num_entries; --i >= 0; )
521 if (psysno == sort_info->entries[i]->sysno)
528 if (position == positions[num_i])
530 sr[num_i].sysno = psysno;
531 yaz_log(log_level_sort, "got pos=" ZINT_FORMAT " (unsorted)", position);
532 sr[num_i].score = -1;
537 sset->cache_position = position;
538 sset->cache_psysno = psysno;
539 sset->cache_rfd = rfd;
545 void zebra_meta_records_destroy(ZebraHandle zh, ZebraMetaRecord *records,
548 assert(zh); /* compiler shut up about unused arg */
556 const char *index_type;
559 void resultSetInsertSort(ZebraHandle zh, ZebraSet sset,
560 struct sortKeyInfo *criteria, int num_criteria,
562 char *cmp_buf[], char *tmp_cmp_buf[])
564 struct zset_sort_entry *new_entry = NULL;
565 struct zset_sort_info *sort_info = sset->sort_info;
568 zebra_sort_sysno(zh->reg->sort_index, sysno);
569 for (i = 0; i<num_criteria; i++)
571 char *this_entry_buf = tmp_cmp_buf[i];
572 memset(this_entry_buf, '\0', SORT_IDX_ENTRYSIZE);
573 if (criteria[i].ord != -1)
575 zebra_sort_type(zh->reg->sort_index, criteria[i].ord);
576 zebra_sort_read(zh->reg->sort_index, this_entry_buf);
579 i = sort_info->num_entries;
583 for (j = 0; j<num_criteria; j++)
585 char *this_entry_buf = tmp_cmp_buf[j];
586 char *other_entry_buf =
587 cmp_buf[j] + i * SORT_IDX_ENTRYSIZE;
588 if (criteria[j].numerical)
590 char this_entry_org[1024];
591 char other_entry_org[1024];
593 const char *index_type = criteria[j].index_type;
594 zebra_term_untrans(zh, index_type, this_entry_org,
596 zebra_term_untrans(zh, index_type, other_entry_org,
598 diff = atof(this_entry_org) - atof(other_entry_org);
609 rel = memcmp(this_entry_buf, other_entry_buf,
617 if (criteria[j].relation == 'A')
622 else if (criteria[j].relation == 'D')
629 j = sort_info->max_entries;
633 if (sort_info->num_entries == j)
636 j = (sort_info->num_entries)++;
637 new_entry = sort_info->entries[j];
641 for (k = 0; k<num_criteria; k++)
643 char *j_buf = cmp_buf[k] + j * SORT_IDX_ENTRYSIZE;
644 char *j_1_buf = cmp_buf[k] + (j-1) * SORT_IDX_ENTRYSIZE;
645 memcpy(j_buf, j_1_buf, SORT_IDX_ENTRYSIZE);
647 sort_info->entries[j] = sort_info->entries[j-1];
650 sort_info->entries[i] = new_entry;
652 for (i = 0; i<num_criteria; i++)
654 char *new_entry_buf = cmp_buf[i] + j * SORT_IDX_ENTRYSIZE;
655 char *this_entry_buf = tmp_cmp_buf[i];
656 memcpy(new_entry_buf, this_entry_buf, SORT_IDX_ENTRYSIZE);
658 new_entry->sysno = sysno;
659 new_entry->score = -1;
662 void resultSetInsertRank(ZebraHandle zh, struct zset_sort_info *sort_info,
663 zint sysno, int score, int relation)
665 struct zset_sort_entry *new_entry = NULL;
667 assert(zh); /* compiler shut up about unused arg */
669 i = sort_info->num_entries;
674 rel = score - sort_info->entries[i]->score;
681 else if (relation == 'A')
688 j = sort_info->max_entries;
692 if (sort_info->num_entries == j)
695 j = (sort_info->num_entries)++;
697 new_entry = sort_info->entries[j];
700 sort_info->entries[j] = sort_info->entries[j-1];
703 sort_info->entries[i] = new_entry;
705 new_entry->sysno = sysno;
706 new_entry->score = score;
709 static Z_RPNQuery *copy_RPNQuery(Z_RPNQuery *src, NMEM nmem)
712 ODR encode = odr_createmem(ODR_ENCODE);
713 ODR decode = odr_createmem(ODR_DECODE);
715 if (z_RPNQuery(encode, &src, 0, 0))
718 char *buf = odr_getbuf(encode, &len, 0);
722 odr_setbuf(decode, buf, len, 0);
723 z_RPNQuery(decode, &dst, 0, 0);
726 nmem_transfer(nmem, decode->mem);
732 static Z_SortKeySpecList *copy_SortKeySpecList(Z_SortKeySpecList *src, NMEM nmem)
734 Z_SortKeySpecList *dst = 0;
735 ODR encode = odr_createmem(ODR_ENCODE);
736 ODR decode = odr_createmem(ODR_DECODE);
738 if (z_SortKeySpecList(encode, &src, 0, 0))
741 char *buf = odr_getbuf(encode, &len, 0);
745 odr_setbuf(decode, buf, len, 0);
746 z_SortKeySpecList(decode, &dst, 0, 0);
749 nmem_transfer(nmem, decode->mem);
755 ZebraSet resultSetClone(ZebraHandle zh, const char *setname,
761 nset = resultSetAdd(zh, setname, 1);
765 nset->nmem = nmem_create();
767 nset->num_bases = rset->num_bases;
769 nmem_malloc(nset->nmem, nset->num_bases * sizeof(*rset->basenames));
770 for (i = 0; i<rset->num_bases; i++)
771 nset->basenames[i] = nmem_strdup(nset->nmem, rset->basenames[i]);
774 nset->rset = rset_dup(rset->rset);
776 nset->rpn = copy_RPNQuery(rset->rpn, nset->nmem);
780 ZEBRA_RES resultSetSort(ZebraHandle zh, NMEM nmem,
781 int num_input_setnames, const char **input_setnames,
782 const char *output_setname,
783 Z_SortKeySpecList *sort_sequence, int *sort_status)
788 if (num_input_setnames == 0)
790 zebra_setError(zh, YAZ_BIB1_NO_RESULT_SET_NAME_SUPPLIED_ON_SORT, 0);
793 if (num_input_setnames > 1)
795 zebra_setError(zh, YAZ_BIB1_SORT_TOO_MANY_INPUT_RESULTS, 0);
800 yaz_log(log_level_sort, "result set sort input=%s output=%s",
801 *input_setnames, output_setname);
802 sset = resultSetGet(zh, input_setnames[0]);
805 zebra_setError(zh, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST,
809 if (!(rset = sset->rset))
811 zebra_setError(zh, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST,
815 if (strcmp(output_setname, input_setnames[0]))
816 sset = resultSetClone(zh, output_setname, sset);
817 sset->sortSpec = copy_SortKeySpecList(sort_sequence, sset->nmem);
818 return resultSetSortSingle (zh, nmem, sset, rset, sort_sequence,
822 ZEBRA_RES resultSetSortSingle(ZebraHandle zh, NMEM nmem,
823 ZebraSet sset, RSET rset,
824 Z_SortKeySpecList *sort_sequence,
832 struct sortKeyInfo sort_criteria[ZSET_SORT_MAX_LEVEL];
833 char *cmp_buf[ZSET_SORT_MAX_LEVEL];
834 char *tmp_cmp_buf[ZSET_SORT_MAX_LEVEL];
840 size_t sysno_mem_index = 0;
842 if (zh->m_staticrank)
845 assert(nmem); /* compiler shut up about unused param */
846 sset->sort_info->num_entries = 0;
848 rset_getterms(rset, 0, 0, &n);
849 terms = (TERMID *) nmem_malloc(nmem, sizeof(*terms)*n);
850 rset_getterms(rset, terms, n, &numTerms);
853 num_criteria = sort_sequence->num_specs;
854 if (num_criteria > ZSET_SORT_MAX_LEVEL)
855 num_criteria = ZSET_SORT_MAX_LEVEL;
856 for (i = 0; i < num_criteria; i++)
858 Z_SortKeySpec *sks = sort_sequence->specs[i];
862 sort_criteria[i].ord = -1;
863 sort_criteria[i].numerical = 0;
865 if (sks->which == Z_SortKeySpec_missingValueData)
867 zebra_setError(zh, YAZ_BIB1_UNSUPP_MISSING_DATA_ACTION, 0);
870 if (*sks->sortRelation == Z_SortKeySpec_ascending)
871 sort_criteria[i].relation = 'A';
872 else if (*sks->sortRelation == Z_SortKeySpec_descending)
873 sort_criteria[i].relation = 'D';
876 zebra_setError(zh, YAZ_BIB1_ILLEGAL_SORT_RELATION, 0);
879 if (sks->sortElement->which == Z_SortElement_databaseSpecific)
881 zebra_setError(zh, YAZ_BIB1_DATABASE_SPECIFIC_SORT_UNSUPP, 0);
884 else if (sks->sortElement->which != Z_SortElement_generic)
886 zebra_setError(zh, YAZ_BIB1_SORT_ILLEGAL_SORT, 0);
889 sk = sks->sortElement->u.generic;
892 case Z_SortKey_sortField:
893 yaz_log(log_level_sort, "key %d is of type sortField",
895 sort_criteria[i].numerical = 0;
896 sort_criteria[i].ord =
897 zebraExplain_lookup_attr_str(zh->reg->zei,
898 zinfo_index_category_sort,
900 if (sks->which != Z_SortKeySpec_null
901 && sort_criteria[i].ord == -1)
904 YAZ_BIB1_CANNOT_SORT_ACCORDING_TO_SEQUENCE, 0);
908 case Z_SortKey_elementSpec:
909 yaz_log(log_level_sort, "key %d is of type elementSpec",
911 zebra_setError(zh, YAZ_BIB1_CANNOT_SORT_ACCORDING_TO_SEQUENCE, 0);
913 case Z_SortKey_sortAttributes:
914 yaz_log(log_level_sort, "key %d is of type sortAttributes", i+1);
915 res = zebra_sort_get_ord(zh, sk->u.sortAttributes,
917 &sort_criteria[i].ord,
918 &sort_criteria[i].numerical);
919 if (sks->which != Z_SortKeySpec_null && res != ZEBRA_OK)
923 if (zebraExplain_lookup_ord(zh->reg->zei, sort_criteria[i].ord,
924 &sort_criteria[i].index_type,
927 zebra_setError(zh, YAZ_BIB1_CANNOT_SORT_ACCORDING_TO_SEQUENCE, 0);
931 /* allocate space for each cmpare buf + one extra for tmp comparison */
932 for (i = 0; i<num_criteria; i++)
934 cmp_buf[i] = xmalloc(sset->sort_info->max_entries
935 * SORT_IDX_ENTRYSIZE);
936 tmp_cmp_buf[i] = xmalloc(SORT_IDX_ENTRYSIZE);
938 rfd = rset_open(rset, RSETF_READ);
939 while (rset_read(rfd, &key, &termid))
941 zint this_sys = key.mem[sysno_mem_index];
942 if (log_level_searchhits)
943 key_logdump_txt(log_level_searchhits, &key, termid->name);
945 if (this_sys != psysno)
947 if ((sset->hits & 255) == 0 && zh->break_handler_func)
949 if (zh->break_handler_func(zh->break_handler_data))
951 rset_set_hits_limit(rset, 0);
957 resultSetInsertSort(zh, sset,
958 sort_criteria, num_criteria, psysno, cmp_buf,
964 for (i = 0; i<num_criteria; i++)
967 xfree(tmp_cmp_buf[i]);
970 yaz_log(log_level_sort, ZINT_FORMAT " keys, " ZINT_FORMAT " sysnos, sort",
972 for (i = 0; i < numTerms; i++)
973 yaz_log(log_level_sort, "term=\"%s\" type=%s count=" ZINT_FORMAT,
974 terms[i]->name, terms[i]->flags, terms[i]->rset->hits_count);
975 *sort_status = Z_SortResponse_success;
979 RSET resultSetRef(ZebraHandle zh, const char *resultSetId)
983 if ((s = resultSetGet(zh, resultSetId)))
988 ZEBRA_RES resultSetRank(ZebraHandle zh, ZebraSet zebraSet,
989 RSET rset, NMEM nmem)
998 ZebraRankClass rank_class;
999 struct zset_sort_info *sort_info;
1000 const char *rank_handler_name = res_get_def(zh->res, "rank", "rank-1");
1001 size_t sysno_mem_index = 0;
1003 if (zh->m_staticrank)
1004 sysno_mem_index = 1;
1008 sort_info = zebraSet->sort_info;
1009 sort_info->num_entries = 0;
1011 zebraSet->estimated_hit_count = 0;
1012 rset_getterms(rset, 0, 0, &n);
1013 terms = (TERMID *) nmem_malloc(nmem, sizeof(*terms)*n);
1014 rset_getterms(rset, terms, n, &numTerms);
1016 rank_class = zebraRankLookup(zh, rank_handler_name);
1019 yaz_log(YLOG_WARN, "No such rank handler: %s", rank_handler_name);
1020 zebra_setError(zh, YAZ_BIB1_UNSUPP_SEARCH, "Cannot find rank handler");
1025 RSFD rfd = rset_open(rset, RSETF_READ);
1026 struct rank_control *rc = rank_class->control;
1029 void *handle = (*rc->begin) (zh->reg, rank_class->class_handle, rset,
1030 nmem, terms, numTerms);
1031 zint psysno = 0; /* previous doc id / sys no */
1032 zint pstaticrank = 0; /* previous static rank */
1034 while (rset_read(rfd, &key, &termid))
1036 zint this_sys = key.mem[sysno_mem_index];
1038 zint seqno = key.mem[key.len-1];
1040 if (log_level_searchhits)
1041 key_logdump_txt(log_level_searchhits, &key, termid->name);
1042 if (this_sys != psysno)
1043 { /* new record .. */
1044 if (!(rfd->counted_items & 255) && zh->break_handler_func)
1046 if (zh->break_handler_func(zh->break_handler_data))
1048 yaz_log(YLOG_LOG, "Aborted search");
1052 if (rfd->counted_items > rset->hits_limit)
1055 { /* only if we did have a previous record */
1056 score = (*rc->calc)(handle, psysno, pstaticrank,
1058 /* insert the hit. A=Ascending */
1059 resultSetInsertRank(zh, sort_info, psysno, score, 'A');
1064 zebraSet->estimated_hit_count = 1;
1065 rset_set_hits_limit(rset, 0);
1069 if (zh->m_staticrank)
1070 pstaticrank = key.mem[0];
1072 (*rc->add)(handle, CAST_ZINT_TO_INT(seqno), termid);
1076 { /* we had - at least - one record */
1077 score = (*rc->calc)(handle, psysno, pstaticrank, &stop_flag);
1078 /* insert the hit. A=Ascending */
1079 resultSetInsertRank(zh, sort_info, psysno, score, 'A');
1082 (*rc->end)(zh->reg, handle);
1085 zebraSet->hits = rset->hits_count;
1087 yaz_log(log_level_searchterms, ZINT_FORMAT " keys, "
1088 ZINT_FORMAT " sysnos, rank", kno, zebraSet->hits);
1089 for (i = 0; i < numTerms; i++)
1091 yaz_log(log_level_searchterms, "term=\"%s\" type=%s count="
1093 terms[i]->name, terms[i]->flags, terms[i]->rset->hits_count);
1098 ZebraRankClass zebraRankLookup(ZebraHandle zh, const char *name)
1100 ZebraRankClass p = zh->reg->rank_classes;
1101 while (p && strcmp(p->control->name, name))
1103 if (p && !p->init_flag)
1105 if (p->control->create)
1106 p->class_handle = (*p->control->create)(zh);
1112 void zebraRankInstall(struct zebra_register *reg, struct rank_control *ctrl)
1114 ZebraRankClass p = (ZebraRankClass) xmalloc(sizeof(*p));
1115 p->control = (struct rank_control *) xmalloc(sizeof(*p->control));
1116 memcpy(p->control, ctrl, sizeof(*p->control));
1117 p->control->name = xstrdup(ctrl->name);
1119 p->next = reg->rank_classes;
1120 reg->rank_classes = p;
1123 void zebraRankDestroy(struct zebra_register *reg)
1125 ZebraRankClass p = reg->rank_classes;
1128 ZebraRankClass p_next = p->next;
1129 if (p->init_flag && p->control->destroy)
1130 (*p->control->destroy)(reg, p->class_handle);
1131 xfree(p->control->name);
1136 reg->rank_classes = NULL;
1139 static int trav_rset_for_termids(RSET rset, TERMID *termid_array,
1140 zint *hits_array, int *approx_array)
1144 for (i = 0; i<rset->no_children; i++)
1145 no += trav_rset_for_termids(rset->children[i],
1146 (termid_array ? termid_array + no : 0),
1147 (hits_array ? hits_array + no : 0),
1148 (approx_array ? approx_array + no : 0));
1152 termid_array[no] = rset->term;
1154 hits_array[no] = rset->hits_count;
1156 approx_array[no] = rset->hits_approx;
1158 yaz_log(YLOG_LOG, "rset=%p term=%s limit=" ZINT_FORMAT
1159 " count=" ZINT_FORMAT,
1160 rset, rset->term->name, rset->hits_limit, rset->hits_count);
1167 ZEBRA_RES zebra_result_set_term_no(ZebraHandle zh, const char *setname,
1170 ZebraSet sset = resultSetGet(zh, setname);
1174 *num_terms = trav_rset_for_termids(sset->rset, 0, 0, 0);
1180 ZEBRA_RES zebra_result_set_term_info(ZebraHandle zh, const char *setname,
1181 int no, zint *count, int *approx,
1182 char *termbuf, size_t *termlen,
1183 const char **term_ref_id)
1185 ZebraSet sset = resultSetGet(zh, setname);
1188 int num_terms = trav_rset_for_termids(sset->rset, 0, 0, 0);
1189 if (no >= 0 && no < num_terms)
1191 TERMID *term_array = xmalloc(num_terms * sizeof(*term_array));
1192 zint *hits_array = xmalloc(num_terms * sizeof(*hits_array));
1193 int *approx_array = xmalloc(num_terms * sizeof(*approx_array));
1195 trav_rset_for_termids(sset->rset, term_array,
1196 hits_array, approx_array);
1199 *count = hits_array[no];
1201 *approx = approx_array[no];
1204 char *inbuf = term_array[no]->name;
1205 size_t inleft = strlen(inbuf);
1206 size_t outleft = *termlen - 1;
1208 if (zh->iconv_from_utf8 != 0)
1210 char *outbuf = termbuf;
1213 ret = yaz_iconv(zh->iconv_from_utf8, &inbuf, &inleft,
1215 if (ret == (size_t)(-1))
1219 yaz_iconv(zh->iconv_from_utf8, 0, 0,
1221 *termlen = outbuf - termbuf;
1226 if (inleft > outleft)
1229 memcpy(termbuf, inbuf, *termlen);
1231 termbuf[*termlen] = '\0';
1234 *term_ref_id = term_array[no]->ref_id;
1238 xfree(approx_array);
1245 ZEBRA_RES zebra_snippets_hit_vector(ZebraHandle zh, const char *setname,
1246 zint sysno, zebra_snippets *snippets)
1248 ZebraSet sset = resultSetGet(zh, setname);
1249 yaz_log(YLOG_DEBUG, "zebra_get_hit_vector setname=%s zysno=" ZINT_FORMAT,
1255 struct rset_key_control *kc = zebra_key_control_create(zh);
1256 NMEM nmem = nmem_create();
1258 RSET rsets[2], rset_comb;
1259 RSET rset_temp = rset_create_temp(nmem, kc, kc->scope,
1260 res_get(zh->res, "setTmpDir"),0 );
1263 RSFD rsfd = rset_open(rset_temp, RSETF_WRITE);
1270 rset_write(rsfd, &key);
1273 rsets[0] = rset_temp;
1274 rsets[1] = rset_dup(sset->rset);
1276 rset_comb = rset_create_and(nmem, kc, kc->scope, 2, rsets);
1278 rsfd = rset_open(rset_comb, RSETF_READ);
1280 while (rset_read(rsfd, &key, &termid))
1284 struct ord_list *ol;
1285 for (ol = termid->ol; ol; ol = ol->next)
1287 zebra_snippets_append(snippets, key.mem[key.len-1], 0,
1288 ol->ord, termid->name);
1294 rset_delete(rset_comb);
1301 static ZEBRA_RES zebra_recid_to_sysno(ZebraHandle zh,
1302 const char **basenames, int num_bases,
1304 zint *sysnos, int *no_sysnos)
1306 ZEBRA_RES res = ZEBRA_OK;
1307 int sysnos_offset = 0;
1310 if (!zh->reg->isamb)
1312 if (sysnos_offset < *no_sysnos)
1318 for (i = 0; res == ZEBRA_OK && i < num_bases; i++)
1320 const char *database = basenames[i];
1321 if (zebraExplain_curDatabase(zh->reg->zei, database) == 0)
1323 const char *index_type = "w";
1324 const char *use_string = "_ALLRECORDS";
1326 zinfo_index_category_t cat = zinfo_index_category_alwaysmatches;
1327 ord = zebraExplain_lookup_attr_str(zh->reg->zei, cat,
1328 index_type, use_string);
1332 int ord_len = key_SU_encode(ord, ord_buf);
1335 ord_buf[ord_len] = '\0';
1337 info = dict_lookup(zh->reg->dict, ord_buf);
1340 if (*info != sizeof(ISAM_P))
1348 struct it_key key_until, key_found;
1352 memcpy(&isam_p, info+1, sizeof(ISAM_P));
1354 pt = isamb_pp_open(zh->reg->isamb, isam_p, 2);
1359 key_until.mem[i++] = recid;
1360 key_until.mem[i++] = 0; /* section_id */
1361 if (zh->m_segment_indexing)
1362 key_until.mem[i++] = 0; /* segment */
1363 key_until.mem[i++] = 0;
1366 r = isamb_pp_forward(pt, &key_found, &key_until);
1367 while (r && key_found.mem[0] == recid)
1369 if (sysnos_offset < *no_sysnos)
1370 sysnos[sysnos_offset] =
1371 key_found.mem[key_found.len-1];
1373 yaz_log(YLOG_LOG, "Found " ZINT_FORMAT,
1374 key_found.mem[key_found.len-1]);
1375 r = isamb_pp_read(pt, &key_found);
1386 *no_sysnos = sysnos_offset;
1390 ZEBRA_RES zebra_result_recid_to_sysno(ZebraHandle zh,
1391 const char *setname,
1393 zint *sysnos, int *no_sysnos)
1395 const char **basenames;
1399 res = resultSetGetBaseNames(zh, setname, &basenames, &num_bases);
1400 if (res != ZEBRA_OK)
1403 return zebra_recid_to_sysno(zh, basenames, num_bases,
1404 recid, sysnos, no_sysnos);
1407 void zebra_count_set(ZebraHandle zh, RSET rset, zint *count,
1414 yaz_log(YLOG_DEBUG, "count_set");
1416 rset->hits_limit = approx_limit;
1419 rfd = rset_open(rset, RSETF_READ);
1420 while (rset_read(rfd, &key,0 /* never mind terms */))
1422 if (key.mem[0] != psysno)
1424 psysno = key.mem[0];
1425 if (rfd->counted_items >= rset->hits_limit)
1430 *count = rset->hits_count;
1437 * indent-tabs-mode: nil
1439 * vim: shiftwidth=4 tabstop=8 expandtab