X-Git-Url: http://git.indexdata.com/?p=idzebra-moved-to-github.git;a=blobdiff_plain;f=index%2Fzsets.c;h=6db021b8f3fe4f1559dc83217ed900bb0b23d4b2;hp=1e0a590a42c7573d5513aa8a1d9389d416c9d206;hb=896c0427df9d8eff5de6a1735dcd992e067df844;hpb=0245f556af399689056b7810ed0e3de93021ad4a diff --git a/index/zsets.c b/index/zsets.c index 1e0a590..6db021b 100644 --- a/index/zsets.c +++ b/index/zsets.c @@ -1,127 +1,800 @@ -/* - * Copyright (C) 1994-1995, Index Data I/S - * All rights reserved. - * Sebastian Hammer, Adam Dickmeiss - * - * $Log: zsets.c,v $ - * Revision 1.8 1995-10-10 13:59:25 adam - * Function rset_open changed its wflag parameter to general flags. - * - * Revision 1.7 1995/10/06 14:38:01 adam - * New result set method: r_score. - * Local no (sysno) and score is transferred to retrieveCtrl. - * - * Revision 1.6 1995/09/28 09:19:49 adam - * xfree/xmalloc used everywhere. - * Extract/retrieve method seems to work for text records. - * - * Revision 1.5 1995/09/27 16:17:32 adam - * More work on retrieve. - * - * Revision 1.4 1995/09/07 13:58:36 adam - * New parameter: result-set file descriptor (RSFD) to support multiple - * positions within the same result-set. - * Boolean operators: and, or, not implemented. - * Result-set references. - * - * Revision 1.3 1995/09/06 16:11:19 adam - * Option: only one word key per file. - * - * Revision 1.2 1995/09/06 10:33:04 adam - * More work on present. Some log messages removed. - * - * Revision 1.1 1995/09/05 15:28:40 adam - * More work on search engine. - * - */ +/* $Id: zsets.c,v 1.38 2002-08-02 19:26:56 adam Exp $ + Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002 + Index Data Aps + +This file is part of the Zebra server. + +Zebra is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 2, or (at your option) any later +version. + +Zebra is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with Zebra; see the file LICENSE.zebra. If not, write to the +Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA +02111-1307, USA. +*/ + + #include #include +#ifdef WIN32 +#include +#else #include +#endif -#include "zserver.h" +#include "index.h" #include -ZServerSet *resultSetAdd (ZServerInfo *zi, const char *name, int ov, RSET rset) +#define SORT_IDX_ENTRYSIZE 64 +#define ZSET_SORT_MAX_LEVEL 3 + +struct zebra_set_term_entry { + int reg_type; + char *db; + int set; + int use; + char *term; +}; +struct zebra_set { + char *name; + RSET rset; + NMEM nmem; + int hits; + int num_bases; + char **basenames; + Z_RPNQuery *rpn; + struct zset_sort_info *sort_info; + struct zebra_set_term_entry *term_entries; + int term_entries_max; + struct zebra_set *next; + int locked; +}; + +struct zset_sort_entry { + int sysno; + int score; + char buf[ZSET_SORT_MAX_LEVEL][SORT_IDX_ENTRYSIZE]; +}; + +struct zset_sort_info { + int max_entries; + int num_entries; + struct zset_sort_entry *all_entries; + struct zset_sort_entry **entries; +}; + +ZebraSet resultSetAddRPN (ZebraHandle zh, ODR input, ODR output, + Z_RPNQuery *rpn, int num_bases, + char **basenames, + const char *setname) { - ZServerSet *s; + ZebraSet zebraSet; + int i; - for (s = zi->sets; s; s = s->next) - if (!strcmp (s->name, name)) + zh->errCode = 0; + zh->errString = NULL; + zh->hits = 0; + + zebraSet = resultSetAdd (zh, setname, 1); + if (!zebraSet) + return 0; + zebraSet->locked = 1; + zebraSet->rpn = 0; + zebraSet->nmem = nmem_create (); + + zebraSet->num_bases = num_bases; + zebraSet->basenames = + nmem_malloc (zebraSet->nmem, num_bases * sizeof(*zebraSet->basenames)); + for (i = 0; ibasenames[i] = nmem_strdup (zebraSet->nmem, basenames[i]); + + + zebraSet->rset = rpn_search (zh, output->mem, rpn, + zebraSet->num_bases, + zebraSet->basenames, zebraSet->name, + zebraSet); + zh->hits = zebraSet->hits; + if (zebraSet->rset) + zebraSet->rpn = rpn; + zebraSet->locked = 0; + return zebraSet; +} + +void resultSetAddTerm (ZebraHandle zh, ZebraSet s, int reg_type, + const char *db, int set, + int use, const char *term) +{ + if (!s->nmem) + s->nmem = nmem_create (); + if (!s->term_entries) + { + int i; + s->term_entries_max = 1000; + s->term_entries = + nmem_malloc (s->nmem, s->term_entries_max * + sizeof(*s->term_entries)); + for (i = 0; i < s->term_entries_max; i++) + s->term_entries[i].term = 0; + } + if (s->hits < s->term_entries_max) + { + s->term_entries[s->hits].reg_type = reg_type; + s->term_entries[s->hits].db = nmem_strdup (s->nmem, db); + s->term_entries[s->hits].set = set; + s->term_entries[s->hits].use = use; + s->term_entries[s->hits].term = nmem_strdup (s->nmem, term); + } + (s->hits)++; +} + + +int zebra_resultSetTerms (ZebraHandle zh, const char *setname, + int no, int *count, + int *type, char *out, size_t *len) +{ + ZebraSet s = resultSetGet (zh, setname); + int no_max = 0; + + if (count) + *count = 0; + if (!s || !s->rset) + return 0; + no_max = s->rset->no_rset_terms; + if (no < 0 || no >= no_max) + return 0; + if (count) + *count = s->rset->rset_terms[no]->count; + if (type) + *type = s->rset->rset_terms[no]->type; + + if (out) + { + char *inbuf = s->rset->rset_terms[no]->name; + size_t inleft = strlen(inbuf); + size_t outleft = *len - 1; + int converted = 0; +#if HAVE_ICONV_H + if (zh->iconv_from_utf8 != (iconv_t)(-1)) { - if (!ov) - return NULL; - rset_delete (s->rset); - s->rset = rset; - return s; + char *outbuf = out; + size_t ret; + + ret = iconv(zh->iconv_from_utf8, &inbuf, &inleft, + &outbuf, &outleft); + if (ret == (size_t)(-1)) + *len = 0; + else + *len = outbuf - out; + converted = 1; + } +#endif + if (!converted) + { + if (inleft > outleft) + inleft = outleft; + *len = inleft; + memcpy (out, inbuf, *len); } - s = xmalloc (sizeof(*s)); - s->next = zi->sets; - zi->sets = s; - s->name = xmalloc (strlen(name)+1); - strcpy (s->name, name); - s->rset = rset; + out[*len] = 0; + } + return no_max; +} + + +ZebraSet resultSetAdd (ZebraHandle zh, const char *name, int ov) +{ + ZebraSet s; + int i; + + for (s = zh->sets; s; s = s->next) + if (!strcmp (s->name, name)) + break; + if (s) + { + logf (LOG_DEBUG, "updating result set %s", name); + if (!ov || s->locked) + return NULL; + if (s->rset) + rset_delete (s->rset); + if (s->nmem) + nmem_destroy (s->nmem); + } + else + { + logf (LOG_DEBUG, "adding result set %s", name); + s = (ZebraSet) xmalloc (sizeof(*s)); + s->next = zh->sets; + zh->sets = s; + s->name = (char *) xmalloc (strlen(name)+1); + strcpy (s->name, name); + + s->sort_info = (struct zset_sort_info *) + xmalloc (sizeof(*s->sort_info)); + s->sort_info->max_entries = 1000; + s->sort_info->entries = (struct zset_sort_entry **) + xmalloc (sizeof(*s->sort_info->entries) * + s->sort_info->max_entries); + s->sort_info->all_entries = (struct zset_sort_entry *) + xmalloc (sizeof(*s->sort_info->all_entries) * + s->sort_info->max_entries); + for (i = 0; i < s->sort_info->max_entries; i++) + s->sort_info->entries[i] = s->sort_info->all_entries + i; + } + s->locked = 0; + s->term_entries = 0; + s->hits = 0; + s->rset = 0; + s->nmem = 0; + s->rpn = 0; return s; } -ZServerSet *resultSetGet (ZServerInfo *zi, const char *name) +ZebraSet resultSetGet (ZebraHandle zh, const char *name) { - ZServerSet *s; + ZebraSet s; - for (s = zi->sets; s; s = s->next) + for (s = zh->sets; s; s = s->next) if (!strcmp (s->name, name)) + { + if (!s->term_entries && !s->rset && s->rpn) + { + NMEM nmem = nmem_create (); + yaz_log (LOG_LOG, "research %s", name); + s->rset = + rpn_search (zh, nmem, s->rpn, s->num_bases, + s->basenames, s->name, s); + nmem_destroy (nmem); + } return s; + } return NULL; } -ZServerSetSysno *resultSetSysnoGet (ZServerInfo *zi, const char *name, - int num, int *positions) +void resultSetInvalidate (ZebraHandle zh) { - ZServerSet *sset; - ZServerSetSysno *sr; + ZebraSet s = zh->sets; + + for (; s; s = s->next) + { + if (s->rset) + rset_delete (s->rset); + s->rset = 0; + } +} + +void resultSetDestroy (ZebraHandle zh, int num, char **names,int *statuses) +{ + ZebraSet * ss = &zh->sets; + int i; + + if (statuses) + for (i = 0; ierrCode = 0; + zh->errString = NULL; + while (*ss) + { + int i = -1; + ZebraSet s = *ss; + if (num >= 0) + { + for (i = 0; iname, names[i])) + { + if (statuses) + statuses[i] = Z_DeleteStatus_success; + i = -1; + break; + } + } + if (i < 0) + { + *ss = s->next; + + xfree (s->sort_info->all_entries); + xfree (s->sort_info->entries); + xfree (s->sort_info); + + if (s->nmem) + nmem_destroy (s->nmem); + if (s->rset) + rset_delete (s->rset); + xfree (s->name); + xfree (s); + } + else + ss = &s->next; + } +} + +ZebraPosSet zebraPosSetCreate (ZebraHandle zh, const char *name, + int num, int *positions) +{ + ZebraSet sset; + ZebraPosSet sr = 0; RSET rset; - int num_i = 0; - int position = 0; - int psysno = 0; - struct it_key key; - RSFD rfd; + int i; + struct zset_sort_info *sort_info; - if (!(sset = resultSetGet (zi, name))) + if (!(sset = resultSetGet (zh, name))) return NULL; if (!(rset = sset->rset)) - return NULL; - logf (LOG_DEBUG, "resultSetRecordGet"); - sr = xmalloc (sizeof(*sr) * num); - rfd = rset_open (rset, RSETF_READ|RSETF_SORT_RANK); - while (rset_read (rset, rfd, &key)) + { + if (!sset->term_entries) + return 0; + sr = (ZebraPosSet) xmalloc (sizeof(*sr) * num); + for (i = 0; iterm_entries_max) + { + sr[i].term = sset->term_entries[positions[i]-1].term; + sr[i].db = sset->term_entries[positions[i]-1].db; + } + } + } + else + { + sr = (ZebraPosSet) xmalloc (sizeof(*sr) * num); + for (i = 0; isort_info; + if (sort_info) + { + int position; + + for (i = 0; i 0 && position <= sort_info->num_entries) + { + logf (LOG_DEBUG, "got pos=%d (sorted)", position); + sr[i].sysno = sort_info->entries[position-1]->sysno; + sr[i].score = sort_info->entries[position-1]->score; + } + } + } + /* did we really get all entries using sort ? */ + for (i = 0; inum_entries; + while (num_i < num && positions[num_i] < position) + num_i++; + rfd = rset_open (rset, RSETF_READ); + while (num_i < num && rset_read (rset, rfd, &key, &term_index)) + { + if (key.sysno != psysno) + { + psysno = key.sysno; + if (sort_info) + { + /* determine we alreay have this in our set */ + for (i = sort_info->num_entries; --i >= 0; ) + if (psysno == sort_info->entries[i]->sysno) + break; + if (i >= 0) + continue; + } + position++; + assert (num_i < num); + if (position == positions[num_i]) + { + sr[num_i].sysno = psysno; + logf (LOG_DEBUG, "got pos=%d (unsorted)", position); + sr[num_i].score = -1; + num_i++; + } + } + } + rset_close (rset, rfd); + } + } + return sr; +} + +void zebraPosSetDestroy (ZebraHandle zh, ZebraPosSet records, int num) +{ + xfree (records); +} + +struct sortKeyInfo { + int relation; + int attrUse; + int numerical; +}; + +void resultSetInsertSort (ZebraHandle zh, ZebraSet sset, + struct sortKeyInfo *criteria, int num_criteria, + int sysno) +{ + struct zset_sort_entry this_entry; + struct zset_sort_entry *new_entry = NULL; + struct zset_sort_info *sort_info = sset->sort_info; + int i, j; + + sortIdx_sysno (zh->reg->sortIdx, sysno); + for (i = 0; ireg->sortIdx, criteria[i].attrUse); + sortIdx_read (zh->reg->sortIdx, this_entry.buf[i]); + } + i = sort_info->num_entries; + while (--i >= 0) + { + int rel = 0; + for (j = 0; jentries[i]->buf[j]); + rel = 0; + if (diff > 0.0) + rel = 1; + else if (diff < 0.0) + rel = -1; + } + else + { + rel = memcmp (this_entry.buf[j], sort_info->entries[i]->buf[j], + SORT_IDX_ENTRYSIZE); + } + if (rel) + break; + } + if (!rel) + break; + if (criteria[j].relation == 'A') + { + if (rel > 0) + break; + } + else if (criteria[j].relation == 'D') + { + if (rel < 0) + break; + } + } + ++i; + j = sort_info->max_entries; + if (i == j) + return; + + if (sort_info->num_entries == j) + --j; + else + j = (sort_info->num_entries)++; + new_entry = sort_info->entries[j]; + while (j != i) + { + sort_info->entries[j] = sort_info->entries[j-1]; + --j; + } + sort_info->entries[i] = new_entry; + assert (new_entry); + for (i = 0; ibuf[i], this_entry.buf[i], SORT_IDX_ENTRYSIZE); + new_entry->sysno = sysno; + new_entry->score = -1; +} + +void resultSetInsertRank (ZebraHandle zh, struct zset_sort_info *sort_info, + int sysno, int score, int relation) +{ + struct zset_sort_entry *new_entry = NULL; + int i, j; + + i = sort_info->num_entries; + while (--i >= 0) + { + int rel = 0; + + rel = score - sort_info->entries[i]->score; + + if (relation == 'D') + { + if (rel >= 0) + break; + } + else if (relation == 'A') + { + if (rel <= 0) + break; + } + } + ++i; + j = sort_info->max_entries; + if (i == j) + return; + + if (sort_info->num_entries == j) + --j; + else + j = (sort_info->num_entries)++; + + new_entry = sort_info->entries[j]; + while (j != i) + { + sort_info->entries[j] = sort_info->entries[j-1]; + --j; + } + sort_info->entries[i] = new_entry; + assert (new_entry); + new_entry->sysno = sysno; + new_entry->score = score; +} + +void resultSetSort (ZebraHandle zh, NMEM nmem, + int num_input_setnames, const char **input_setnames, + const char *output_setname, + Z_SortKeySpecList *sort_sequence, int *sort_status) +{ + ZebraSet sset; + RSET rset; + + if (num_input_setnames == 0) + { + zh->errCode = 208; + return ; + } + if (num_input_setnames > 1) + { + zh->errCode = 230; + return; + } + logf (LOG_DEBUG, "result set sort input=%s output=%s", + *input_setnames, output_setname); + sset = resultSetGet (zh, input_setnames[0]); + if (!sset) + { + zh->errCode = 30; + zh->errString = nmem_strdup (nmem, input_setnames[0]); + return; + } + if (!(rset = sset->rset)) + { + zh->errCode = 30; + zh->errString = nmem_strdup (nmem, input_setnames[0]); + return; + } + if (strcmp (output_setname, input_setnames[0])) + { + rset = rset_dup (rset); + sset = resultSetAdd (zh, output_setname, 1); + sset->rset = rset; + } + resultSetSortSingle (zh, nmem, sset, rset, sort_sequence, sort_status); +} + +void resultSetSortSingle (ZebraHandle zh, NMEM nmem, + ZebraSet sset, RSET rset, + Z_SortKeySpecList *sort_sequence, int *sort_status) +{ + int i, psysno = 0; + struct it_key key; + struct sortKeyInfo sort_criteria[3]; + int num_criteria; + int term_index; + RSFD rfd; + + logf (LOG_LOG, "resultSetSortSingle start"); + sset->sort_info->num_entries = 0; + + sset->hits = 0; + num_criteria = sort_sequence->num_specs; + if (num_criteria > 3) + num_criteria = 3; + for (i = 0; i < num_criteria; i++) + { + Z_SortKeySpec *sks = sort_sequence->specs[i]; + Z_SortKey *sk; + + if (*sks->sortRelation == Z_SortRelation_ascending) + sort_criteria[i].relation = 'A'; + else if (*sks->sortRelation == Z_SortRelation_descending) + sort_criteria[i].relation = 'D'; + else + { + zh->errCode = 214; + return; + } + if (sks->sortElement->which == Z_SortElement_databaseSpecific) + { + zh->errCode = 210; + return; + } + else if (sks->sortElement->which != Z_SortElement_generic) + { + zh->errCode = 237; + return; + } + sk = sks->sortElement->u.generic; + switch (sk->which) + { + case Z_SortKey_sortField: + logf (LOG_DEBUG, "Sort: key %d is of type sortField", i+1); + zh->errCode = 207; + return; + case Z_SortKey_elementSpec: + logf (LOG_DEBUG, "Sort: key %d is of type elementSpec", i+1); + zh->errCode = 207; + return; + case Z_SortKey_sortAttributes: + logf (LOG_DEBUG, "Sort: key %d is of type sortAttributes", i+1); + sort_criteria[i].attrUse = + zebra_maps_sort (zh->reg->zebra_maps, + sk->u.sortAttributes, + &sort_criteria[i].numerical); + logf (LOG_DEBUG, "use value = %d", sort_criteria[i].attrUse); + if (sort_criteria[i].attrUse == -1) + { + zh->errCode = 116; + return; + } + if (sortIdx_type (zh->reg->sortIdx, sort_criteria[i].attrUse)) + { + zh->errCode = 207; + return; + } + break; + } + } + rfd = rset_open (rset, RSETF_READ); + while (rset_read (rset, rfd, &key, &term_index)) { if (key.sysno != psysno) { + (sset->hits)++; psysno = key.sysno; - position++; - if (position == positions[num_i]) - { - sr[num_i].sysno = psysno; - rset_score (rset, rfd, &sr[num_i].score); - num_i++; - if (++num_i == num) - break; - } + resultSetInsertSort (zh, sset, + sort_criteria, num_criteria, psysno); } } rset_close (rset, rfd); - while (num_i < num) + + for (i = 0; i < rset->no_rset_terms; i++) + yaz_log (LOG_LOG, "term=\"%s\" nn=%d type=%s count=%d", + rset->rset_terms[i]->name, + rset->rset_terms[i]->nn, + rset->rset_terms[i]->flags, + rset->rset_terms[i]->count); + + *sort_status = Z_SortStatus_success; + logf (LOG_LOG, "resultSetSortSingle end"); +} + +RSET resultSetRef (ZebraHandle zh, Z_ResultSetId *resultSetId) +{ + ZebraSet s; + + if ((s = resultSetGet (zh, resultSetId))) + return s->rset; + return NULL; +} + +void resultSetRank (ZebraHandle zh, ZebraSet zebraSet, RSET rset) +{ + int kno = 0; + struct it_key key; + RSFD rfd; + int term_index, i; + ZebraRankClass rank_class; + struct rank_control *rc; + struct zset_sort_info *sort_info; + + sort_info = zebraSet->sort_info; + sort_info->num_entries = 0; + zebraSet->hits = 0; + rfd = rset_open (rset, RSETF_READ); + + yaz_log (LOG_LOG, "resultSetRank"); + + rank_class = zebraRankLookup (zh, "rank-1"); + rc = rank_class->control; + + if (rset_read (rset, rfd, &key, &term_index)) { - sr[num_i].sysno = 0; - num_i++; + int psysno = key.sysno; + int score; + void *handle = + (*rc->begin) (zh->reg, rank_class->class_handle, rset); + (zebraSet->hits)++; + do + { + kno++; + if (key.sysno != psysno) + { + score = (*rc->calc) (handle, psysno); + + resultSetInsertRank (zh, sort_info, psysno, score, 'A'); + (zebraSet->hits)++; + psysno = key.sysno; + } + (*rc->add) (handle, key.seqno, term_index); + } + while (rset_read (rset, rfd, &key, &term_index)); + score = (*rc->calc) (handle, psysno); + resultSetInsertRank (zh, sort_info, psysno, score, 'A'); + (*rc->end) (zh->reg, handle); } - return sr; + rset_close (rset, rfd); + + for (i = 0; i < rset->no_rset_terms; i++) + yaz_log (LOG_LOG, "term=\"%s\" nn=%d type=%s count=%d", + rset->rset_terms[i]->name, + rset->rset_terms[i]->nn, + rset->rset_terms[i]->flags, + rset->rset_terms[i]->count); + + yaz_log (LOG_LOG, "%d keys, %d distinct sysnos", kno, zebraSet->hits); } -void resultSetRecordDel (ZServerInfo *zi, ZServerRecord *records, int num) +ZebraRankClass zebraRankLookup (ZebraHandle zh, const char *name) { - int i; + ZebraRankClass p = zh->reg->rank_classes; + while (p && strcmp (p->control->name, name)) + p = p->next; + if (p && !p->init_flag) + { + if (p->control->create) + p->class_handle = (*p->control->create)(zh->reg); + p->init_flag = 1; + } + return p; +} - for (i = 0; icontrol = (struct rank_control *) xmalloc (sizeof(*p->control)); + memcpy (p->control, ctrl, sizeof(*p->control)); + p->control->name = xstrdup (ctrl->name); + p->init_flag = 0; + p->next = reg->rank_classes; + reg->rank_classes = p; +} + +void zebraRankDestroy (struct zebra_register *reg) +{ + ZebraRankClass p = reg->rank_classes; + while (p) + { + ZebraRankClass p_next = p->next; + if (p->init_flag && p->control->destroy) + (*p->control->destroy)(reg, p->class_handle); + xfree (p->control->name); + xfree (p->control); + xfree (p); + p = p_next; + } + reg->rank_classes = NULL; }