1 /* $Id: zsets.c,v 1.116 2007-01-16 15:01:15 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 */
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)
104 Z_SortKeySpecList *sort_sequence;
106 ZEBRA_RES res = ZEBRA_OK;
108 sort_sequence = (Z_SortKeySpecList *)
109 nmem_malloc(nmem, sizeof(*sort_sequence));
110 sort_sequence->num_specs = 10; /* FIXME - Hard-coded number */
111 sort_sequence->specs = (Z_SortKeySpec **)
112 nmem_malloc(nmem, sort_sequence->num_specs *
113 sizeof(*sort_sequence->specs));
114 for (i = 0; i<sort_sequence->num_specs; i++)
115 sort_sequence->specs[i] = 0;
117 attrset = oid_getentbyoid (rpn->attributeSetId);
119 rpn_get_top_approx_limit(zh, rpn->RPNStructure, &sset->approx_limit);
121 res = rpn_search_top(zh, rpn->RPNStructure, attrset->value,
124 sset->num_bases, sset->basenames,
131 for (i = 0; sort_sequence->specs[i]; i++)
133 sort_sequence->num_specs = i;
134 rset->hits_limit = sset->approx_limit;
137 res = resultSetRank (zh, sset, rset, rset_nmem);
141 res = resultSetSortSingle (zh, nmem, sset, rset,
142 sort_sequence, &sort_status);
149 ZEBRA_RES resultSetAddRPN (ZebraHandle zh, NMEM m, Z_RPNQuery *rpn,
150 int num_bases, char **basenames,
152 zint *hits, int *estimated_hit_count,
153 int *partial_resultset)
160 *estimated_hit_count = 0;
161 *partial_resultset = 0;
163 zebraSet = resultSetAdd(zh, setname, 1);
166 zebraSet->locked = 1;
169 zebraSet->rset_nmem = nmem_create();
171 zebraSet->num_bases = num_bases;
172 zebraSet->basenames =
173 nmem_malloc (zebraSet->nmem, num_bases * sizeof(*zebraSet->basenames));
174 for (i = 0; i<num_bases; i++)
175 zebraSet->basenames[i] = nmem_strdup(zebraSet->nmem, basenames[i]);
177 res = resultSetSearch(zh, zebraSet->nmem, zebraSet->rset_nmem,
179 *hits = zebraSet->hits;
180 if (zebraSet->estimated_hit_count)
181 *estimated_hit_count = 1;
185 zebraSet->locked = 0;
191 void resultSetAddTerm(ZebraHandle zh, ZebraSet s, int reg_type,
192 const char *db, const char *index_name,
195 assert(zh); /* compiler shut up */
197 s->nmem = nmem_create ();
198 if (!s->term_entries)
201 s->term_entries_max = 1000;
203 nmem_malloc (s->nmem, s->term_entries_max *
204 sizeof(*s->term_entries));
205 for (i = 0; i < s->term_entries_max; i++)
206 s->term_entries[i].term = 0;
208 if (s->hits < s->term_entries_max)
210 s->term_entries[s->hits].reg_type = reg_type;
211 s->term_entries[s->hits].db = nmem_strdup (s->nmem, db);
212 s->term_entries[s->hits].index_name = nmem_strdup(s->nmem, index_name);
213 s->term_entries[s->hits].term = nmem_strdup(s->nmem, term);
218 ZebraSet resultSetAdd(ZebraHandle zh, const char *name, int ov)
223 for (s = zh->sets; s; s = s->next)
224 if (!strcmp (s->name, name))
231 yaz_log(log_level_resultsets, "updating result set %s", name);
232 if (!ov || s->locked)
237 rset_close(s->cache_rfd);
238 rset_delete (s->rset);
241 nmem_destroy (s->rset_nmem);
243 nmem_destroy (s->nmem);
247 const char *sort_max_str = zebra_get_resource(zh, "sortmax", "1000");
249 yaz_log(log_level_resultsets, "adding result set %s", name);
250 s = (ZebraSet) xmalloc (sizeof(*s));
253 s->name = (char *) xmalloc (strlen(name)+1);
254 strcpy (s->name, name);
256 s->sort_info = (struct zset_sort_info *)
257 xmalloc (sizeof(*s->sort_info));
258 s->sort_info->max_entries = atoi(sort_max_str);
259 if (s->sort_info->max_entries < 2)
260 s->sort_info->max_entries = 2;
262 s->sort_info->entries = (struct zset_sort_entry **)
263 xmalloc (sizeof(*s->sort_info->entries) *
264 s->sort_info->max_entries);
265 s->sort_info->all_entries = (struct zset_sort_entry *)
266 xmalloc (sizeof(*s->sort_info->all_entries) *
267 s->sort_info->max_entries);
268 for (i = 0; i < s->sort_info->max_entries; i++)
269 s->sort_info->entries[i] = s->sort_info->all_entries + i;
279 s->cache_position = 0;
281 s->approx_limit = zh->approx_limit;
282 s->estimated_hit_count = 0;
286 ZebraSet resultSetGet(ZebraHandle zh, const char *name)
290 for (s = zh->sets; s; s = s->next)
291 if (!strcmp (s->name, name))
293 if (!s->term_entries && !s->rset && s->rpn)
295 NMEM nmem = nmem_create ();
296 yaz_log(log_level_resultsets, "research %s", name);
298 s->rset_nmem=nmem_create();
299 resultSetSearch(zh, nmem, s->rset_nmem, s->rpn, s);
300 if (s->rset && s->sortSpec)
303 yaz_log(log_level_resultsets, "resort %s", name);
304 resultSetSortSingle (zh, nmem, s, s->rset, s->sortSpec,
314 void resultSetInvalidate (ZebraHandle zh)
316 ZebraSet s = zh->sets;
318 yaz_log(log_level_resultsets, "invalidating result sets");
319 for (; s; s = s->next)
324 rset_close(s->cache_rfd);
325 rset_delete (s->rset);
329 s->cache_position = 0;
331 nmem_destroy(s->rset_nmem);
336 void resultSetDestroy(ZebraHandle zh, int num, char **names,int *statuses)
338 ZebraSet * ss = &zh->sets;
342 for (i = 0; i<num; i++)
343 statuses[i] = Z_DeleteStatus_resultSetDidNotExist;
350 for (i = 0; i<num; i++)
351 if (!strcmp (s->name, names[i]))
354 statuses[i] = Z_DeleteStatus_success;
363 xfree (s->sort_info->all_entries);
364 xfree (s->sort_info->entries);
365 xfree (s->sort_info);
368 nmem_destroy (s->nmem);
372 rset_close(s->cache_rfd);
373 rset_delete (s->rset);
376 nmem_destroy(s->rset_nmem);
385 ZebraMetaRecord *zebra_meta_records_create_range(ZebraHandle zh,
390 zint *pos = pos_small;
394 if (num > 10000 || num <= 0)
398 pos = xmalloc(sizeof(*pos) * num);
400 for (i = 0; i<num; i++)
403 mr = zebra_meta_records_create(zh, name, num, pos);
410 ZebraMetaRecord *zebra_meta_records_create(ZebraHandle zh, const char *name,
411 int num, zint *positions)
414 ZebraMetaRecord *sr = 0;
417 struct zset_sort_info *sort_info;
418 size_t sysno_mem_index = 0;
420 if (zh->m_staticrank)
425 if (!(sset = resultSetGet (zh, name)))
427 if (!(rset = sset->rset))
429 if (!sset->term_entries)
431 sr = (ZebraMetaRecord *) xmalloc (sizeof(*sr) * num);
432 for (i = 0; i<num; i++)
439 if (positions[i] <= sset->term_entries_max)
441 sr[i].term = sset->term_entries[positions[i]-1].term;
442 sr[i].db = sset->term_entries[positions[i]-1].db;
448 sr = (ZebraMetaRecord *) xmalloc (sizeof(*sr) * num);
449 for (i = 0; i<num; i++)
456 sort_info = sset->sort_info;
461 for (i = 0; i<num; i++)
463 position = positions[i];
464 if (position > 0 && position <= sort_info->num_entries)
466 yaz_log(log_level_sort, "got pos=" ZINT_FORMAT
467 " (sorted)", position);
468 sr[i].sysno = sort_info->entries[position-1]->sysno;
469 sr[i].score = sort_info->entries[position-1]->score;
473 /* did we really get all entries using sort ? */
474 for (i = 0; i<num; i++)
479 if (i < num) /* nope, get the rest, unsorted - sorry */
488 position = sort_info->num_entries;
489 while (num_i < num && positions[num_i] <= position)
492 if (sset->cache_rfd &&
493 num_i < num && positions[num_i] > sset->cache_position)
495 position = sset->cache_position;
496 rfd = sset->cache_rfd;
497 psysno = sset->cache_psysno;
502 rset_close(sset->cache_rfd);
503 rfd = rset_open (rset, RSETF_READ);
505 while (num_i < num && rset_read (rfd, &key, 0))
507 zint this_sys = key.mem[sysno_mem_index];
508 if (this_sys != psysno)
513 /* determine we alreay have this in our set */
514 for (i = sort_info->num_entries; --i >= 0; )
515 if (psysno == sort_info->entries[i]->sysno)
521 assert (num_i < num);
522 if (position == positions[num_i])
524 sr[num_i].sysno = psysno;
525 yaz_log(log_level_sort, "got pos=" ZINT_FORMAT " (unsorted)", position);
526 sr[num_i].score = -1;
531 sset->cache_position = position;
532 sset->cache_psysno = psysno;
533 sset->cache_rfd = rfd;
539 void zebra_meta_records_destroy (ZebraHandle zh, ZebraMetaRecord *records,
542 assert(zh); /* compiler shut up about unused arg */
553 void resultSetInsertSort(ZebraHandle zh, ZebraSet sset,
554 struct sortKeyInfo *criteria, int num_criteria,
556 char *cmp_buf[], char *tmp_cmp_buf[])
558 struct zset_sort_entry *new_entry = NULL;
559 struct zset_sort_info *sort_info = sset->sort_info;
562 zebra_sort_sysno(zh->reg->sort_index, sysno);
563 for (i = 0; i<num_criteria; i++)
565 char *this_entry_buf = tmp_cmp_buf[i];
566 memset(this_entry_buf, '\0', SORT_IDX_ENTRYSIZE);
567 if (criteria[i].ord != -1)
569 zebra_sort_type(zh->reg->sort_index, criteria[i].ord);
570 zebra_sort_read(zh->reg->sort_index, this_entry_buf);
573 i = sort_info->num_entries;
577 for (j = 0; j<num_criteria; j++)
579 char *this_entry_buf = tmp_cmp_buf[j];
580 char *other_entry_buf =
581 cmp_buf[j] + i * SORT_IDX_ENTRYSIZE;
582 if (criteria[j].numerical)
584 char this_entry_org[1024];
585 char other_entry_org[1024];
587 int index_type = criteria[j].index_type;
588 zebra_term_untrans(zh, index_type, this_entry_org,
590 zebra_term_untrans(zh, index_type, other_entry_org,
592 diff = atof(this_entry_org) - atof(other_entry_org);
603 rel = memcmp(this_entry_buf, other_entry_buf,
611 if (criteria[j].relation == 'A')
616 else if (criteria[j].relation == 'D')
623 j = sort_info->max_entries;
627 if (sort_info->num_entries == j)
630 j = (sort_info->num_entries)++;
631 new_entry = sort_info->entries[j];
635 for (k = 0; k<num_criteria; k++)
637 char *j_buf = cmp_buf[k] + j * SORT_IDX_ENTRYSIZE;
638 char *j_1_buf = cmp_buf[k] + (j-1) * SORT_IDX_ENTRYSIZE;
639 memcpy(j_buf, j_1_buf, SORT_IDX_ENTRYSIZE);
641 sort_info->entries[j] = sort_info->entries[j-1];
644 sort_info->entries[i] = new_entry;
646 for (i = 0; i<num_criteria; i++)
648 char *new_entry_buf = cmp_buf[i] + j * SORT_IDX_ENTRYSIZE;
649 char *this_entry_buf = tmp_cmp_buf[i];
650 memcpy(new_entry_buf, this_entry_buf, SORT_IDX_ENTRYSIZE);
652 new_entry->sysno = sysno;
653 new_entry->score = -1;
656 void resultSetInsertRank(ZebraHandle zh, struct zset_sort_info *sort_info,
657 zint sysno, int score, int relation)
659 struct zset_sort_entry *new_entry = NULL;
661 assert(zh); /* compiler shut up about unused arg */
663 i = sort_info->num_entries;
668 rel = score - sort_info->entries[i]->score;
675 else if (relation == 'A')
682 j = sort_info->max_entries;
686 if (sort_info->num_entries == j)
689 j = (sort_info->num_entries)++;
691 new_entry = sort_info->entries[j];
694 sort_info->entries[j] = sort_info->entries[j-1];
697 sort_info->entries[i] = new_entry;
699 new_entry->sysno = sysno;
700 new_entry->score = score;
703 static Z_RPNQuery *copy_RPNQuery(Z_RPNQuery *src, NMEM nmem)
706 ODR encode = odr_createmem(ODR_ENCODE);
707 ODR decode = odr_createmem(ODR_DECODE);
709 if (z_RPNQuery(encode, &src, 0, 0))
712 char *buf = odr_getbuf(encode, &len, 0);
716 odr_setbuf(decode, buf, len, 0);
717 z_RPNQuery(decode, &dst, 0, 0);
720 nmem_transfer(nmem, decode->mem);
726 static Z_SortKeySpecList *copy_SortKeySpecList(Z_SortKeySpecList *src, NMEM nmem)
728 Z_SortKeySpecList *dst = 0;
729 ODR encode = odr_createmem(ODR_ENCODE);
730 ODR decode = odr_createmem(ODR_DECODE);
732 if (z_SortKeySpecList(encode, &src, 0, 0))
735 char *buf = odr_getbuf(encode, &len, 0);
739 odr_setbuf(decode, buf, len, 0);
740 z_SortKeySpecList(decode, &dst, 0, 0);
743 nmem_transfer(nmem, decode->mem);
749 ZebraSet resultSetClone(ZebraHandle zh, const char *setname,
755 nset = resultSetAdd(zh, setname, 1);
759 nset->nmem = nmem_create();
761 nset->num_bases = rset->num_bases;
763 nmem_malloc (nset->nmem, nset->num_bases * sizeof(*rset->basenames));
764 for (i = 0; i<rset->num_bases; i++)
765 nset->basenames[i] = nmem_strdup(nset->nmem, rset->basenames[i]);
768 nset->rset = rset_dup(rset->rset);
770 nset->rpn = copy_RPNQuery(rset->rpn, nset->nmem);
774 ZEBRA_RES resultSetSort(ZebraHandle zh, NMEM nmem,
775 int num_input_setnames, const char **input_setnames,
776 const char *output_setname,
777 Z_SortKeySpecList *sort_sequence, int *sort_status)
782 if (num_input_setnames == 0)
784 zebra_setError(zh, YAZ_BIB1_NO_RESULT_SET_NAME_SUPPLIED_ON_SORT, 0);
787 if (num_input_setnames > 1)
789 zebra_setError(zh, YAZ_BIB1_SORT_TOO_MANY_INPUT_RESULTS, 0);
794 yaz_log(log_level_sort, "result set sort input=%s output=%s",
795 *input_setnames, output_setname);
796 sset = resultSetGet (zh, input_setnames[0]);
799 zebra_setError(zh, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST,
803 if (!(rset = sset->rset))
805 zebra_setError(zh, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST,
809 if (strcmp (output_setname, input_setnames[0]))
810 sset = resultSetClone(zh, output_setname, sset);
811 sset->sortSpec = copy_SortKeySpecList(sort_sequence, sset->nmem);
812 return resultSetSortSingle (zh, nmem, sset, rset, sort_sequence,
816 ZEBRA_RES resultSetSortSingle(ZebraHandle zh, NMEM nmem,
817 ZebraSet sset, RSET rset,
818 Z_SortKeySpecList *sort_sequence,
826 struct sortKeyInfo sort_criteria[ZSET_SORT_MAX_LEVEL];
827 char *cmp_buf[ZSET_SORT_MAX_LEVEL];
828 char *tmp_cmp_buf[ZSET_SORT_MAX_LEVEL];
834 size_t sysno_mem_index = 0;
836 if (zh->m_staticrank)
839 assert(nmem); /* compiler shut up about unused param */
840 sset->sort_info->num_entries = 0;
842 rset_getterms(rset, 0, 0, &n);
843 terms = (TERMID *) nmem_malloc(nmem, sizeof(*terms)*n);
844 rset_getterms(rset, terms, n, &numTerms);
847 num_criteria = sort_sequence->num_specs;
848 if (num_criteria > ZSET_SORT_MAX_LEVEL)
849 num_criteria = ZSET_SORT_MAX_LEVEL;
850 for (i = 0; i < num_criteria; i++)
852 Z_SortKeySpec *sks = sort_sequence->specs[i];
856 sort_criteria[i].ord = -1;
857 sort_criteria[i].numerical = 0;
859 if (sks->which == Z_SortKeySpec_missingValueData)
861 zebra_setError(zh, YAZ_BIB1_UNSUPP_MISSING_DATA_ACTION, 0);
864 if (*sks->sortRelation == Z_SortKeySpec_ascending)
865 sort_criteria[i].relation = 'A';
866 else if (*sks->sortRelation == Z_SortKeySpec_descending)
867 sort_criteria[i].relation = 'D';
870 zebra_setError(zh, YAZ_BIB1_ILLEGAL_SORT_RELATION, 0);
873 if (sks->sortElement->which == Z_SortElement_databaseSpecific)
875 zebra_setError(zh, YAZ_BIB1_DATABASE_SPECIFIC_SORT_UNSUPP, 0);
878 else if (sks->sortElement->which != Z_SortElement_generic)
880 zebra_setError(zh, YAZ_BIB1_SORT_ILLEGAL_SORT, 0);
883 sk = sks->sortElement->u.generic;
886 case Z_SortKey_sortField:
887 yaz_log(log_level_sort, "key %d is of type sortField",
889 sort_criteria[i].numerical = 0;
890 sort_criteria[i].ord =
891 zebraExplain_lookup_attr_str(zh->reg->zei,
892 zinfo_index_category_sort,
893 -1, sk->u.sortField);
894 if (sks->which != Z_SortKeySpec_null
895 && sort_criteria[i].ord == -1)
898 YAZ_BIB1_CANNOT_SORT_ACCORDING_TO_SEQUENCE, 0);
902 case Z_SortKey_elementSpec:
903 yaz_log(log_level_sort, "key %d is of type elementSpec",
905 zebra_setError(zh, YAZ_BIB1_CANNOT_SORT_ACCORDING_TO_SEQUENCE, 0);
907 case Z_SortKey_sortAttributes:
908 yaz_log(log_level_sort, "key %d is of type sortAttributes", i+1);
909 res = zebra_sort_get_ord(zh, sk->u.sortAttributes,
911 &sort_criteria[i].ord,
912 &sort_criteria[i].numerical);
913 if (sks->which != Z_SortKeySpec_null && res != ZEBRA_OK)
917 if (zebraExplain_lookup_ord(zh->reg->zei, sort_criteria[i].ord,
918 &sort_criteria[i].index_type,
921 zebra_setError(zh, YAZ_BIB1_CANNOT_SORT_ACCORDING_TO_SEQUENCE, 0);
925 /* allocate space for each cmpare buf + one extra for tmp comparison */
926 for (i = 0; i<num_criteria; i++)
928 cmp_buf[i] = xmalloc(sset->sort_info->max_entries
929 * SORT_IDX_ENTRYSIZE);
930 tmp_cmp_buf[i] = xmalloc(SORT_IDX_ENTRYSIZE);
932 rfd = rset_open (rset, RSETF_READ);
933 while (rset_read (rfd, &key, &termid))
935 zint this_sys = key.mem[sysno_mem_index];
936 if (log_level_searchhits)
937 key_logdump_txt(log_level_searchhits, &key, termid->name);
939 if (this_sys != psysno)
943 resultSetInsertSort(zh, sset,
944 sort_criteria, num_criteria, psysno, cmp_buf,
950 for (i = 0; i<num_criteria; i++)
953 xfree(tmp_cmp_buf[i]);
956 yaz_log(log_level_sort, ZINT_FORMAT " keys, " ZINT_FORMAT " sysnos, sort",
958 for (i = 0; i < numTerms; i++)
959 yaz_log(log_level_sort, "term=\"%s\" type=%s count=" ZINT_FORMAT,
960 terms[i]->name, terms[i]->flags, terms[i]->rset->hits_count);
961 *sort_status = Z_SortResponse_success;
965 RSET resultSetRef(ZebraHandle zh, const char *resultSetId)
969 if ((s = resultSetGet (zh, resultSetId)))
974 ZEBRA_RES resultSetRank(ZebraHandle zh, ZebraSet zebraSet,
975 RSET rset, NMEM nmem)
984 ZebraRankClass rank_class;
985 struct zset_sort_info *sort_info;
986 const char *rank_handler_name = res_get_def(zh->res, "rank", "rank-1");
987 size_t sysno_mem_index = 0;
989 if (zh->m_staticrank)
994 sort_info = zebraSet->sort_info;
995 sort_info->num_entries = 0;
997 zebraSet->estimated_hit_count = 0;
998 rset_getterms(rset, 0, 0, &n);
999 terms = (TERMID *) nmem_malloc(nmem, sizeof(*terms)*n);
1000 rset_getterms(rset, terms, n, &numTerms);
1003 rank_class = zebraRankLookup(zh, rank_handler_name);
1006 yaz_log(YLOG_WARN, "No such rank handler: %s", rank_handler_name);
1007 zebra_setError(zh, YAZ_BIB1_UNSUPP_SEARCH, "Cannot find rank handler");
1012 RSFD rfd = rset_open(rset, RSETF_READ);
1013 struct rank_control *rc = rank_class->control;
1018 (*rc->begin) (zh->reg, rank_class->class_handle, rset, nmem,
1020 zint psysno = 0; /* previous doc id / sys no */
1021 zint pstaticrank = 0; /* previous static rank */
1023 while (rset_read(rfd, &key, &termid))
1025 zint this_sys = key.mem[sysno_mem_index];
1027 zint seqno = key.mem[key.len-1];
1029 if (log_level_searchhits)
1030 key_logdump_txt(log_level_searchhits, &key, termid->name);
1031 if (this_sys != psysno)
1032 { /* new record .. */
1033 if (rfd->counted_items > rset->hits_limit)
1035 zebraSet->estimated_hit_count = 1;
1039 { /* only if we did have a previous record */
1040 score = (*rc->calc) (handle, psysno, pstaticrank,
1042 /* insert the hit. A=Ascending */
1043 resultSetInsertRank (zh, sort_info, psysno, score, 'A');
1049 if (zh->m_staticrank)
1050 pstaticrank = key.mem[0];
1052 (*rc->add) (handle, CAST_ZINT_TO_INT(seqno), termid);
1056 { /* we had - at least - one record */
1057 score = (*rc->calc)(handle, psysno, pstaticrank, &stop_flag);
1058 /* insert the hit. A=Ascending */
1059 resultSetInsertRank(zh, sort_info, psysno, score, 'A');
1062 (*rc->end) (zh->reg, handle);
1065 zebraSet->hits = rset->hits_count;
1067 yaz_log(log_level_searchterms, ZINT_FORMAT " keys, "
1068 ZINT_FORMAT " sysnos, rank", kno, zebraSet->hits);
1069 for (i = 0; i < numTerms; i++)
1071 yaz_log(log_level_searchterms, "term=\"%s\" type=%s count="
1073 terms[i]->name, terms[i]->flags, terms[i]->rset->hits_count);
1078 ZebraRankClass zebraRankLookup(ZebraHandle zh, const char *name)
1080 ZebraRankClass p = zh->reg->rank_classes;
1081 while (p && strcmp (p->control->name, name))
1083 if (p && !p->init_flag)
1085 if (p->control->create)
1086 p->class_handle = (*p->control->create)(zh);
1092 void zebraRankInstall(struct zebra_register *reg, struct rank_control *ctrl)
1094 ZebraRankClass p = (ZebraRankClass) xmalloc (sizeof(*p));
1095 p->control = (struct rank_control *) xmalloc (sizeof(*p->control));
1096 memcpy (p->control, ctrl, sizeof(*p->control));
1097 p->control->name = xstrdup (ctrl->name);
1099 p->next = reg->rank_classes;
1100 reg->rank_classes = p;
1103 void zebraRankDestroy(struct zebra_register *reg)
1105 ZebraRankClass p = reg->rank_classes;
1108 ZebraRankClass p_next = p->next;
1109 if (p->init_flag && p->control->destroy)
1110 (*p->control->destroy)(reg, p->class_handle);
1111 xfree(p->control->name);
1116 reg->rank_classes = NULL;
1119 static int trav_rset_for_termids(RSET rset, TERMID *termid_array,
1120 zint *hits_array, int *approx_array)
1124 for (i = 0; i<rset->no_children; i++)
1125 no += trav_rset_for_termids(rset->children[i],
1126 (termid_array ? termid_array + no : 0),
1127 (hits_array ? hits_array + no : 0),
1128 (approx_array ? approx_array + no : 0));
1132 termid_array[no] = rset->term;
1134 hits_array[no] = rset->hits_count;
1136 approx_array[no] = rset->hits_approx;
1138 yaz_log(YLOG_LOG, "rset=%p term=%s limit=" ZINT_FORMAT
1139 " count=" ZINT_FORMAT,
1140 rset, rset->term->name, rset->hits_limit, rset->hits_count);
1147 ZEBRA_RES zebra_result_set_term_no(ZebraHandle zh, const char *setname,
1150 ZebraSet sset = resultSetGet(zh, setname);
1154 *num_terms = trav_rset_for_termids(sset->rset, 0, 0, 0);
1160 ZEBRA_RES zebra_result_set_term_info(ZebraHandle zh, const char *setname,
1161 int no, zint *count, int *approx,
1162 char *termbuf, size_t *termlen,
1163 const char **term_ref_id)
1165 ZebraSet sset = resultSetGet(zh, setname);
1168 int num_terms = trav_rset_for_termids(sset->rset, 0, 0, 0);
1169 if (no >= 0 && no < num_terms)
1171 TERMID *term_array = xmalloc(num_terms * sizeof(*term_array));
1172 zint *hits_array = xmalloc(num_terms * sizeof(*hits_array));
1173 int *approx_array = xmalloc(num_terms * sizeof(*approx_array));
1175 trav_rset_for_termids(sset->rset, term_array,
1176 hits_array, approx_array);
1179 *count = hits_array[no];
1181 *approx = approx_array[no];
1184 char *inbuf = term_array[no]->name;
1185 size_t inleft = strlen(inbuf);
1186 size_t outleft = *termlen - 1;
1188 if (zh->iconv_from_utf8 != 0)
1190 char *outbuf = termbuf;
1193 ret = yaz_iconv(zh->iconv_from_utf8, &inbuf, &inleft,
1195 if (ret == (size_t)(-1))
1198 *termlen = outbuf - termbuf;
1202 if (inleft > outleft)
1205 memcpy(termbuf, inbuf, *termlen);
1207 termbuf[*termlen] = '\0';
1210 *term_ref_id = term_array[no]->ref_id;
1214 xfree(approx_array);
1221 ZEBRA_RES zebra_snippets_hit_vector(ZebraHandle zh, const char *setname,
1222 zint sysno, zebra_snippets *snippets)
1224 ZebraSet sset = resultSetGet(zh, setname);
1225 yaz_log(YLOG_DEBUG, "zebra_get_hit_vector setname=%s zysno=" ZINT_FORMAT,
1231 struct rset_key_control *kc = zebra_key_control_create(zh);
1232 NMEM nmem = nmem_create();
1234 RSET rsets[2], rset_comb;
1235 RSET rset_temp = rset_create_temp(nmem, kc, kc->scope,
1236 res_get (zh->res, "setTmpDir"),0 );
1239 RSFD rsfd = rset_open(rset_temp, RSETF_WRITE);
1246 rset_write (rsfd, &key);
1249 rsets[0] = rset_temp;
1250 rsets[1] = rset_dup(sset->rset);
1252 rset_comb = rset_create_and(nmem, kc, kc->scope, 2, rsets);
1254 rsfd = rset_open(rset_comb, RSETF_READ);
1256 while (rset_read(rsfd, &key, &termid))
1260 struct ord_list *ol;
1261 for (ol = termid->ol; ol; ol = ol->next)
1263 zebra_snippets_append(snippets, key.mem[key.len-1],
1264 ol->ord, termid->name);
1270 rset_delete(rset_comb);
1280 * indent-tabs-mode: nil
1282 * vim: shiftwidth=4 tabstop=8 expandtab