-/*
- * Copyright (C) 1994-1995, Index Data I/S
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: zsets.c,v $
- * Revision 1.10 1995-10-30 15:08:08 adam
- * Bug fixes.
- *
- * Revision 1.9 1995/10/17 18:02:14 adam
- * New feature: databases. Implemented as prefix to words in dictionary.
- *
- * 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 1.102 2006-05-18 12:03:05 adam Exp $
+ Copyright (C) 1995-2006
+ 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 <stdio.h>
#include <assert.h>
+#ifdef WIN32
+#include <io.h>
+#else
#include <unistd.h>
+#endif
+
+#include "index.h"
+#include "rank.h"
+#include <yaz/diagbib1.h>
+#include <rset.h>
-#include "zserver.h"
-#include <rstemp.h>
+#define SORT_IDX_ENTRYSIZE 64
+#define ZSET_SORT_MAX_LEVEL 3
-ZServerSet *resultSetAdd (ZServerInfo *zi, const char *name, int ov, RSET rset)
+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;
+ NMEM rset_nmem; /* for creating the rsets in */
+ zint hits;
+ int num_bases;
+ char **basenames;
+ Z_RPNQuery *rpn;
+ Z_SortKeySpecList *sortSpec;
+ struct zset_sort_info *sort_info;
+ struct zebra_set_term_entry *term_entries;
+ int term_entries_max;
+ struct zebra_set *next;
+ int locked;
+
+ zint cache_position; /* last position */
+ RSFD cache_rfd; /* rfd (NULL if not existing) */
+ zint cache_psysno; /* sysno for last position */
+ zint approx_limit; /* limit before we do approx */
+};
+
+struct zset_sort_entry {
+ zint 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;
+};
+
+static int log_level_set=0;
+static int log_level_sort=0;
+static int log_level_searchhits=0;
+static int log_level_searchterms=0;
+static int log_level_resultsets=0;
+
+static void loglevels()
{
- ZServerSet *s;
+ if (log_level_set)
+ return;
+ log_level_sort = yaz_log_module_level("sorting");
+ log_level_searchhits = yaz_log_module_level("searchhits");
+ log_level_searchterms = yaz_log_module_level("searchterms");
+ log_level_resultsets = yaz_log_module_level("resultsets");
+ log_level_set = 1;
+}
+
+ZEBRA_RES resultSetSearch(ZebraHandle zh, NMEM nmem, NMEM rset_nmem,
+ Z_RPNQuery *rpn, ZebraSet sset)
+{
+ RSET rset = 0;
+ oident *attrset;
+ Z_SortKeySpecList *sort_sequence;
+ int sort_status, i;
+ ZEBRA_RES res = ZEBRA_OK;
+
+ zh->hits = 0;
+
+ sort_sequence = (Z_SortKeySpecList *)
+ nmem_malloc(nmem, sizeof(*sort_sequence));
+ sort_sequence->num_specs = 10; /* FIXME - Hard-coded number */
+ sort_sequence->specs = (Z_SortKeySpec **)
+ nmem_malloc(nmem, sort_sequence->num_specs *
+ sizeof(*sort_sequence->specs));
+ for (i = 0; i<sort_sequence->num_specs; i++)
+ sort_sequence->specs[i] = 0;
+
+ attrset = oid_getentbyoid (rpn->attributeSetId);
+ res = rpn_search_top(zh, rpn->RPNStructure, attrset->value,
+ nmem, rset_nmem,
+ sort_sequence,
+ sset->num_bases, sset->basenames,
+ &rset);
+ if (res != ZEBRA_OK)
+ {
+ sset->rset = 0;
+ return res;
+ }
+ for (i = 0; sort_sequence->specs[i]; i++)
+ ;
+ sort_sequence->num_specs = i;
+ rset->hits_limit = sset->approx_limit;
+ if (!i)
+ {
+ res = resultSetRank (zh, sset, rset, rset_nmem);
+ }
+ else
+ {
+ res = resultSetSortSingle (zh, nmem, sset, rset,
+ sort_sequence, &sort_status);
+ }
+ sset->rset = rset;
+ return res;
+}
+
+
+ZEBRA_RES resultSetAddRPN (ZebraHandle zh, NMEM m, Z_RPNQuery *rpn,
+ int num_bases, char **basenames,
+ const char *setname)
+{
+ ZebraSet zebraSet;
+ int i;
+ ZEBRA_RES res;
+
+ zh->hits = 0;
+
+ zebraSet = resultSetAdd(zh, setname, 1);
+ if (!zebraSet)
+ return ZEBRA_FAIL;
+ zebraSet->locked = 1;
+ zebraSet->rpn = 0;
+ zebraSet->nmem = m;
+ zebraSet->rset_nmem = nmem_create();
- for (s = zi->sets; s; s = s->next)
+ zebraSet->num_bases = num_bases;
+ zebraSet->basenames =
+ nmem_malloc (zebraSet->nmem, num_bases * sizeof(*zebraSet->basenames));
+ for (i = 0; i<num_bases; i++)
+ zebraSet->basenames[i] = nmem_strdup(zebraSet->nmem, basenames[i]);
+
+ res = resultSetSearch(zh, zebraSet->nmem, zebraSet->rset_nmem,
+ rpn, zebraSet);
+ zh->hits = zebraSet->hits;
+ if (zebraSet->rset)
+ zebraSet->rpn = rpn;
+ zebraSet->locked = 0;
+ if (!zebraSet->rset)
+ return ZEBRA_FAIL;
+ return res;
+}
+
+void resultSetAddTerm (ZebraHandle zh, ZebraSet s, int reg_type,
+ const char *db, int set,
+ int use, const char *term)
+{
+ assert(zh); /* compiler shut up */
+ 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)++;
+}
+
+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))
- {
- if (!ov)
- return NULL;
+ break;
+
+ if (!log_level_set)
+ loglevels();
+ if (s)
+ {
+ yaz_log(log_level_resultsets, "updating result set %s", name);
+ if (!ov || s->locked)
+ return NULL;
+ if (s->rset)
+ {
+ if (s->cache_rfd)
+ rset_close(s->cache_rfd);
rset_delete (s->rset);
- s->rset = rset;
- return s;
- }
- s = xmalloc (sizeof(*s));
- s->next = zi->sets;
- zi->sets = s;
- s->name = xmalloc (strlen(name)+1);
- strcpy (s->name, name);
- s->rset = rset;
+ }
+ if (s->rset_nmem)
+ nmem_destroy (s->rset_nmem);
+ if (s->nmem)
+ nmem_destroy (s->nmem);
+ }
+ else
+ {
+ const char *sort_max_str = zebra_get_resource(zh, "sortmax", "1000");
+
+ yaz_log(log_level_resultsets, "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 = atoi(sort_max_str);
+ if (s->sort_info->max_entries < 2)
+ s->sort_info->max_entries = 2;
+
+ 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->rset_nmem = 0;
+ s->nmem = 0;
+ s->rpn = 0;
+ s->sortSpec = 0;
+ s->cache_position = 0;
+ s->cache_rfd = 0;
+ s->approx_limit = zh->approx_limit;
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_level_resultsets, "research %s", name);
+ if (!s->rset_nmem)
+ s->rset_nmem=nmem_create();
+ resultSetSearch(zh, nmem, s->rset_nmem, s->rpn, s);
+ if (s->rset && s->sortSpec)
+ {
+ int sort_status;
+ yaz_log(log_level_resultsets, "resort %s", name);
+ resultSetSortSingle (zh, nmem, s, s->rset, s->sortSpec,
+ &sort_status);
+ }
+ nmem_destroy (nmem);
+ }
return s;
+ }
return NULL;
}
-ZServerSetSysno *resultSetSysnoGet (ZServerInfo *zi, const char *name,
- int num, int *positions)
+void resultSetInvalidate (ZebraHandle zh)
+{
+ ZebraSet s = zh->sets;
+
+ yaz_log(log_level_resultsets, "invalidating result sets");
+ for (; s; s = s->next)
+ {
+ if (s->rset)
+ {
+ if (s->cache_rfd)
+ rset_close(s->cache_rfd);
+ rset_delete (s->rset);
+ }
+ s->rset = 0;
+ s->cache_rfd = 0;
+ s->cache_position = 0;
+ if (s->rset_nmem)
+ nmem_destroy(s->rset_nmem);
+ s->rset_nmem=0;
+ }
+}
+
+void resultSetDestroy(ZebraHandle zh, int num, char **names,int *statuses)
{
- ZServerSet *sset;
- ZServerSetSysno *sr;
+ ZebraSet * ss = &zh->sets;
+ int i;
+
+ if (statuses)
+ for (i = 0; i<num; i++)
+ statuses[i] = Z_DeleteStatus_resultSetDidNotExist;
+ while (*ss)
+ {
+ int i = -1;
+ ZebraSet s = *ss;
+ if (num >= 0)
+ {
+ for (i = 0; i<num; i++)
+ if (!strcmp (s->name, 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)
+ {
+ if (s->cache_rfd)
+ rset_close(s->cache_rfd);
+ rset_delete (s->rset);
+ }
+ if (s->rset_nmem)
+ nmem_destroy(s->rset_nmem);
+ xfree (s->name);
+ xfree (s);
+ }
+ else
+ ss = &s->next;
+ }
+}
+
+ZebraMetaRecord *zebra_meta_records_create_range(ZebraHandle zh,
+ const char *name,
+ zint start, int num)
+{
+ zint pos_small[10];
+ zint *pos = pos_small;
+ ZebraMetaRecord *mr;
+ int i;
+
+ if (num > 10000 || num <= 0)
+ return 0;
+
+ if (num > 10)
+ pos = xmalloc(sizeof(*pos) * num);
+
+ for (i = 0; i<num; i++)
+ pos[i] = start+i;
+
+ mr = zebra_meta_records_create(zh, name, num, pos);
+
+ if (num > 10)
+ xfree(pos);
+ return mr;
+}
+
+ZebraMetaRecord *zebra_meta_records_create(ZebraHandle zh, const char *name,
+ int num, zint *positions)
+{
+ ZebraSet sset;
+ ZebraMetaRecord *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;
+ size_t sysno_mem_index = 0;
+
+ if (zh->m_staticrank)
+ sysno_mem_index = 1;
- if (!(sset = resultSetGet (zi, name)))
+ if (!log_level_set)
+ loglevels();
+ 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 (key.sysno != psysno)
+ if (!sset->term_entries)
+ return 0;
+ sr = (ZebraMetaRecord *) xmalloc (sizeof(*sr) * num);
+ for (i = 0; i<num; i++)
{
- psysno = key.sysno;
- position++;
- assert (num_i < num);
- if (position == positions[num_i])
+ sr[i].sysno = 0;
+ sr[i].score = -1;
+ sr[i].term = 0;
+ sr[i].db = 0;
+
+ if (positions[i] <= sset->term_entries_max)
{
- sr[num_i].sysno = psysno;
- rset_score (rset, rfd, &sr[num_i].score);
- if (++num_i == num)
- break;
+ sr[i].term = sset->term_entries[positions[i]-1].term;
+ sr[i].db = sset->term_entries[positions[i]-1].db;
}
}
}
- rset_close (rset, rfd);
- while (num_i < num)
+ else
{
- sr[num_i].sysno = 0;
- num_i++;
+ sr = (ZebraMetaRecord *) xmalloc (sizeof(*sr) * num);
+ for (i = 0; i<num; i++)
+ {
+ sr[i].sysno = 0;
+ sr[i].score = -1;
+ sr[i].term = 0;
+ sr[i].db = 0;
+ }
+ sort_info = sset->sort_info;
+ if (sort_info)
+ {
+ zint position;
+
+ for (i = 0; i<num; i++)
+ {
+ position = positions[i];
+ if (position > 0 && position <= sort_info->num_entries)
+ {
+ yaz_log(log_level_sort, "got pos=" ZINT_FORMAT
+ " (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; i<num; i++)
+ {
+ if (!sr[i].sysno)
+ break;
+ }
+ if (i < num) /* nope, get the rest, unsorted - sorry */
+ {
+ zint position = 0;
+ int num_i = 0;
+ zint psysno = 0;
+ RSFD rfd;
+ struct it_key key;
+
+ if (sort_info)
+ position = sort_info->num_entries;
+ while (num_i < num && positions[num_i] <= position)
+ num_i++;
+
+ if (sset->cache_rfd &&
+ num_i < num && positions[num_i] > sset->cache_position)
+ {
+ position = sset->cache_position;
+ rfd = sset->cache_rfd;
+ psysno = sset->cache_psysno;
+ }
+ else
+ {
+ if (sset->cache_rfd)
+ rset_close(sset->cache_rfd);
+ rfd = rset_open (rset, RSETF_READ);
+ }
+ while (num_i < num && rset_read (rfd, &key, 0))
+ {
+ zint this_sys = key.mem[sysno_mem_index];
+ if (this_sys != psysno)
+ {
+ psysno = this_sys;
+ 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;
+ yaz_log(log_level_sort, "got pos=" ZINT_FORMAT " (unsorted)", position);
+ sr[num_i].score = -1;
+ num_i++;
+ }
+ }
+ }
+ sset->cache_position = position;
+ sset->cache_psysno = psysno;
+ sset->cache_rfd = rfd;
+ }
}
return sr;
}
-void resultSetSysnoDel (ZServerInfo *zi, ZServerSetSysno *records, int num)
+void zebra_meta_records_destroy (ZebraHandle zh, ZebraMetaRecord *records,
+ int num)
{
+ assert(zh); /* compiler shut up about unused arg */
xfree (records);
}
+
+struct sortKeyInfo {
+ int relation;
+#if 0
+ int attrUse;
+#else
+ int ord;
+#endif
+ int numerical;
+};
+
+void resultSetInsertSort (ZebraHandle zh, ZebraSet sset,
+ struct sortKeyInfo *criteria, int num_criteria,
+ zint 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; i<num_criteria; i++)
+ {
+ sortIdx_type (zh->reg->sortIdx, criteria[i].ord);
+ sortIdx_read (zh->reg->sortIdx, this_entry.buf[i]);
+ }
+ i = sort_info->num_entries;
+ while (--i >= 0)
+ {
+ int rel = 0;
+ for (j = 0; j<num_criteria; j++)
+ {
+ if (criteria[j].numerical)
+ {
+ double diff = atof(this_entry.buf[j]) -
+ atof(sort_info->entries[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; i<num_criteria; i++)
+ memcpy (new_entry->buf[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,
+ zint sysno, int score, int relation)
+{
+ struct zset_sort_entry *new_entry = NULL;
+ int i, j;
+ assert(zh); /* compiler shut up about unused arg */
+
+ 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;
+}
+
+static Z_RPNQuery *copy_RPNQuery(Z_RPNQuery *src, NMEM nmem)
+{
+ Z_RPNQuery *dst = 0;
+ ODR encode = odr_createmem(ODR_ENCODE);
+ ODR decode = odr_createmem(ODR_DECODE);
+
+ if (z_RPNQuery(encode, &src, 0, 0))
+ {
+ int len;
+ char *buf = odr_getbuf(encode, &len, 0);
+
+ if (buf)
+ {
+ odr_setbuf(decode, buf, len, 0);
+ z_RPNQuery(decode, &dst, 0, 0);
+ }
+ }
+ nmem_transfer(nmem, decode->mem);
+ odr_destroy(encode);
+ odr_destroy(decode);
+ return dst;
+}
+
+static Z_SortKeySpecList *copy_SortKeySpecList(Z_SortKeySpecList *src, NMEM nmem)
+{
+ Z_SortKeySpecList *dst = 0;
+ ODR encode = odr_createmem(ODR_ENCODE);
+ ODR decode = odr_createmem(ODR_DECODE);
+
+ if (z_SortKeySpecList(encode, &src, 0, 0))
+ {
+ int len;
+ char *buf = odr_getbuf(encode, &len, 0);
+
+ if (buf)
+ {
+ odr_setbuf(decode, buf, len, 0);
+ z_SortKeySpecList(decode, &dst, 0, 0);
+ }
+ }
+ nmem_transfer(nmem, decode->mem);
+ odr_destroy(encode);
+ odr_destroy(decode);
+ return dst;
+}
+
+ZebraSet resultSetClone(ZebraHandle zh, const char *setname,
+ ZebraSet rset)
+{
+ ZebraSet nset;
+ int i;
+
+ nset = resultSetAdd(zh, setname, 1);
+ if (!nset)
+ return 0;
+
+ nset->nmem = nmem_create();
+
+ nset->num_bases = rset->num_bases;
+ nset->basenames =
+ nmem_malloc (nset->nmem, nset->num_bases * sizeof(*rset->basenames));
+ for (i = 0; i<rset->num_bases; i++)
+ nset->basenames[i] = nmem_strdup(nset->nmem, rset->basenames[i]);
+
+ if (rset->rset)
+ nset->rset = rset_dup(rset->rset);
+ if (rset->rpn)
+ nset->rpn = copy_RPNQuery(rset->rpn, nset->nmem);
+ return nset;
+}
+
+ZEBRA_RES 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)
+ {
+ zebra_setError(zh, YAZ_BIB1_NO_RESULT_SET_NAME_SUPPLIED_ON_SORT, 0);
+ return ZEBRA_FAIL;
+ }
+ if (num_input_setnames > 1)
+ {
+ zebra_setError(zh, YAZ_BIB1_SORT_TOO_MANY_INPUT_RESULTS, 0);
+ return ZEBRA_FAIL;
+ }
+ if (!log_level_set)
+ loglevels();
+ yaz_log(log_level_sort, "result set sort input=%s output=%s",
+ *input_setnames, output_setname);
+ sset = resultSetGet (zh, input_setnames[0]);
+ if (!sset)
+ {
+ zebra_setError(zh, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST,
+ input_setnames[0]);
+ return ZEBRA_FAIL;
+ }
+ if (!(rset = sset->rset))
+ {
+ zebra_setError(zh, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST,
+ input_setnames[0]);
+ return ZEBRA_FAIL;
+ }
+ if (strcmp (output_setname, input_setnames[0]))
+ sset = resultSetClone(zh, output_setname, sset);
+ sset->sortSpec = copy_SortKeySpecList(sort_sequence, sset->nmem);
+ return resultSetSortSingle (zh, nmem, sset, rset, sort_sequence,
+ sort_status);
+}
+
+ZEBRA_RES resultSetSortSingle(ZebraHandle zh, NMEM nmem,
+ ZebraSet sset, RSET rset,
+ Z_SortKeySpecList *sort_sequence,
+ int *sort_status)
+{
+ int i;
+ int n = 0;
+ zint kno = 0;
+ zint psysno = 0;
+ struct it_key key;
+ struct sortKeyInfo sort_criteria[3];
+ int num_criteria;
+ RSFD rfd;
+ TERMID termid;
+ TERMID *terms;
+ int numTerms = 0;
+ size_t sysno_mem_index = 0;
+
+ if (zh->m_staticrank)
+ sysno_mem_index = 1;
+
+
+ assert(nmem); /* compiler shut up about unused param */
+ sset->sort_info->num_entries = 0;
+
+ rset_getterms(rset, 0, 0, &n);
+ terms = (TERMID *) nmem_malloc(nmem, sizeof(*terms)*n);
+ rset_getterms(rset, terms, n, &numTerms);
+
+ 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_SortKeySpec_ascending)
+ sort_criteria[i].relation = 'A';
+ else if (*sks->sortRelation == Z_SortKeySpec_descending)
+ sort_criteria[i].relation = 'D';
+ else
+ {
+ zebra_setError(zh, YAZ_BIB1_ILLEGAL_SORT_RELATION, 0);
+ return ZEBRA_FAIL;
+ }
+ if (sks->sortElement->which == Z_SortElement_databaseSpecific)
+ {
+ zebra_setError(zh, YAZ_BIB1_DATABASE_SPECIFIC_SORT_UNSUPP, 0);
+ return ZEBRA_FAIL;
+ }
+ else if (sks->sortElement->which != Z_SortElement_generic)
+ {
+ zebra_setError(zh, YAZ_BIB1_SORT_ILLEGAL_SORT, 0);
+ return ZEBRA_FAIL;
+ }
+ sk = sks->sortElement->u.generic;
+ switch (sk->which)
+ {
+ case Z_SortKey_sortField:
+ yaz_log(log_level_sort, "key %d is of type sortField",
+ i+1);
+ zebra_setError(zh, YAZ_BIB1_CANNOT_SORT_ACCORDING_TO_SEQUENCE, 0);
+ return ZEBRA_FAIL;
+ case Z_SortKey_elementSpec:
+ yaz_log(log_level_sort, "key %d is of type elementSpec",
+ i+1);
+ zebra_setError(zh, YAZ_BIB1_CANNOT_SORT_ACCORDING_TO_SEQUENCE, 0);
+ return ZEBRA_FAIL;
+ case Z_SortKey_sortAttributes:
+ yaz_log(log_level_sort, "key %d is of type sortAttributes", i+1);
+ if (1)
+ {
+ int ord;
+ int use = zebra_maps_sort(zh->reg->zebra_maps,
+ sk->u.sortAttributes,
+ &sort_criteria[i].numerical);
+ yaz_log(log_level_sort, "use value = %d", use);
+ if (use == -1)
+ {
+ zebra_setError(
+ zh, YAZ_BIB1_USE_ATTRIBUTE_REQUIRED_BUT_NOT_SUPPLIED, 0);
+ return ZEBRA_FAIL;
+ }
+ ord = zebraExplain_lookup_attr_su_any_index(zh->reg->zei,
+ VAL_IDXPATH, use);
+ if (ord == -1)
+ {
+ zebra_setError(
+ zh, YAZ_BIB1_CANNOT_SORT_ACCORDING_TO_SEQUENCE, 0);
+ return ZEBRA_FAIL;
+ }
+ sort_criteria[i].ord = ord;
+ }
+ break;
+ }
+ }
+ rfd = rset_open (rset, RSETF_READ);
+ while (rset_read (rfd, &key, &termid))
+ {
+ zint this_sys = key.mem[sysno_mem_index];
+ if (log_level_searchhits)
+ key_logdump_txt(log_level_searchhits, &key, termid->name);
+ kno++;
+ if (this_sys != psysno)
+ {
+ (sset->hits)++;
+ psysno = this_sys;
+ resultSetInsertSort (zh, sset,
+ sort_criteria, num_criteria, psysno);
+ }
+ }
+ rset_close (rfd);
+ yaz_log(log_level_sort, ZINT_FORMAT " keys, " ZINT_FORMAT " sysnos, sort",
+ kno, sset->hits);
+ for (i = 0; i < numTerms; i++)
+ yaz_log(log_level_sort, "term=\"%s\" type=%s count=" ZINT_FORMAT,
+ terms[i]->name, terms[i]->flags, terms[i]->rset->hits_count);
+ *sort_status = Z_SortResponse_success;
+ return ZEBRA_OK;
+}
+
+RSET resultSetRef(ZebraHandle zh, const char *resultSetId)
+{
+ ZebraSet s;
+
+ if ((s = resultSetGet (zh, resultSetId)))
+ return s->rset;
+ return NULL;
+}
+
+ZEBRA_RES resultSetRank(ZebraHandle zh, ZebraSet zebraSet,
+ RSET rset, NMEM nmem)
+{
+ struct it_key key;
+ TERMID termid;
+ TERMID *terms;
+ zint kno = 0;
+ int numTerms = 0;
+ int n = 0;
+ int i;
+ ZebraRankClass rank_class;
+ struct zset_sort_info *sort_info;
+ const char *rank_handler_name = res_get_def(zh->res, "rank", "rank-1");
+ size_t sysno_mem_index = 0;
+
+ if (zh->m_staticrank)
+ sysno_mem_index = 1;
+
+ if (!log_level_set)
+ loglevels();
+ sort_info = zebraSet->sort_info;
+ sort_info->num_entries = 0;
+ zebraSet->hits = 0;
+ rset_getterms(rset, 0, 0, &n);
+ terms = (TERMID *) nmem_malloc(nmem, sizeof(*terms)*n);
+ rset_getterms(rset, terms, n, &numTerms);
+
+
+ rank_class = zebraRankLookup(zh, rank_handler_name);
+ if (!rank_class)
+ {
+ yaz_log(YLOG_WARN, "No such rank handler: %s", rank_handler_name);
+ zebra_setError(zh, YAZ_BIB1_UNSUPP_SEARCH, "Cannot find rank handler");
+ return ZEBRA_FAIL;
+ }
+ else
+ {
+ RSFD rfd = rset_open(rset, RSETF_READ);
+ struct rank_control *rc = rank_class->control;
+ double score;
+ zint count = 0;
+
+ void *handle =
+ (*rc->begin) (zh->reg, rank_class->class_handle, rset, nmem,
+ terms, numTerms);
+ zint psysno = 0; /* previous doc id / sys no */
+ zint pstaticrank = 0; /* previous static rank */
+ int stop_flag = 0;
+ while (rset_read(rfd, &key, &termid))
+ {
+ zint this_sys = key.mem[sysno_mem_index];
+
+ zint seqno = key.mem[key.len-1];
+ kno++;
+ if (log_level_searchhits)
+ key_logdump_txt(log_level_searchhits, &key, termid->name);
+ if (this_sys != psysno)
+ { /* new record .. */
+ if (rfd->counted_items > rset->hits_limit)
+ break;
+ if (psysno)
+ { /* only if we did have a previous record */
+ score = (*rc->calc) (handle, psysno, pstaticrank,
+ &stop_flag);
+ /* insert the hit. A=Ascending */
+ resultSetInsertRank (zh, sort_info, psysno, score, 'A');
+ count++;
+ if (stop_flag)
+ break;
+ }
+ psysno = this_sys;
+ if (zh->m_staticrank)
+ pstaticrank = key.mem[0];
+ }
+ (*rc->add) (handle, CAST_ZINT_TO_INT(seqno), termid);
+ }
+ /* no more items */
+ if (psysno)
+ { /* we had - at least - one record */
+ score = (*rc->calc)(handle, psysno, pstaticrank, &stop_flag);
+ /* insert the hit. A=Ascending */
+ resultSetInsertRank(zh, sort_info, psysno, score, 'A');
+ count++;
+ }
+ (*rc->end) (zh->reg, handle);
+ rset_close (rfd);
+ }
+ zebraSet->hits = rset->hits_count;
+
+ yaz_log(log_level_searchterms, ZINT_FORMAT " keys, "
+ ZINT_FORMAT " sysnos, rank", kno, zebraSet->hits);
+ for (i = 0; i < numTerms; i++)
+ {
+ yaz_log(log_level_searchterms, "term=\"%s\" type=%s count="
+ ZINT_FORMAT,
+ terms[i]->name, terms[i]->flags, terms[i]->rset->hits_count);
+ }
+ return ZEBRA_OK;
+}
+
+ZebraRankClass zebraRankLookup(ZebraHandle zh, const char *name)
+{
+ 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);
+ p->init_flag = 1;
+ }
+ return p;
+}
+
+void zebraRankInstall(struct zebra_register *reg, struct rank_control *ctrl)
+{
+ ZebraRankClass p = (ZebraRankClass) xmalloc (sizeof(*p));
+ p->control = (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;
+}
+
+static int trav_rset_for_termids(RSET rset, TERMID *termid_array,
+ zint *hits_array, int *approx_array)
+{
+ int no = 0;
+ int i;
+ for (i = 0; i<rset->no_children; i++)
+ no += trav_rset_for_termids(rset->children[i],
+ (termid_array ? termid_array + no : 0),
+ (hits_array ? hits_array + no : 0),
+ (approx_array ? approx_array + no : 0));
+ if (rset->term)
+ {
+ if (termid_array)
+ termid_array[no] = rset->term;
+ if (hits_array)
+ hits_array[no] = rset->hits_count;
+ if (approx_array)
+ approx_array[no] = rset->hits_approx;
+#if 0
+ yaz_log(YLOG_LOG, "rset=%p term=%s limit=" ZINT_FORMAT
+ " count=" ZINT_FORMAT,
+ rset, rset->term->name, rset->hits_limit, rset->hits_count);
+#endif
+ no++;
+ }
+ return no;
+}
+
+ZEBRA_RES zebra_result_set_term_no(ZebraHandle zh, const char *setname,
+ int *num_terms)
+{
+ ZebraSet sset = resultSetGet(zh, setname);
+ *num_terms = 0;
+ if (sset)
+ {
+ *num_terms = trav_rset_for_termids(sset->rset, 0, 0, 0);
+ return ZEBRA_OK;
+ }
+ return ZEBRA_FAIL;
+}
+
+ZEBRA_RES zebra_result_set_term_info(ZebraHandle zh, const char *setname,
+ int no, zint *count, int *approx,
+ char *termbuf, size_t *termlen,
+ const char **term_ref_id)
+{
+ ZebraSet sset = resultSetGet(zh, setname);
+ if (sset)
+ {
+ int num_terms = trav_rset_for_termids(sset->rset, 0, 0, 0);
+ if (no >= 0 && no < num_terms)
+ {
+ TERMID *term_array = xmalloc(num_terms * sizeof(*term_array));
+ zint *hits_array = xmalloc(num_terms * sizeof(*hits_array));
+ int *approx_array = xmalloc(num_terms * sizeof(*approx_array));
+
+ trav_rset_for_termids(sset->rset, term_array,
+ hits_array, approx_array);
+
+ if (count)
+ *count = hits_array[no];
+ if (approx)
+ *approx = approx_array[no];
+ if (termbuf)
+ {
+ char *inbuf = term_array[no]->name;
+ size_t inleft = strlen(inbuf);
+ size_t outleft = *termlen - 1;
+
+ if (zh->iconv_from_utf8 != 0)
+ {
+ char *outbuf = termbuf;
+ size_t ret;
+
+ ret = yaz_iconv(zh->iconv_from_utf8, &inbuf, &inleft,
+ &outbuf, &outleft);
+ if (ret == (size_t)(-1))
+ *termlen = 0;
+ else
+ *termlen = outbuf - termbuf;
+ }
+ else
+ {
+ if (inleft > outleft)
+ inleft = outleft;
+ *termlen = inleft;
+ memcpy(termbuf, inbuf, *termlen);
+ }
+ termbuf[*termlen] = '\0';
+ }
+ if (term_ref_id)
+ *term_ref_id = term_array[no]->ref_id;
+
+ xfree(term_array);
+ xfree(hits_array);
+ xfree(approx_array);
+ return ZEBRA_OK;
+ }
+ }
+ return ZEBRA_FAIL;
+}
+
+ZEBRA_RES zebra_snippets_hit_vector(ZebraHandle zh, const char *setname,
+ zint sysno, zebra_snippets *snippets)
+{
+ ZebraSet sset = resultSetGet(zh, setname);
+ yaz_log(YLOG_DEBUG, "zebra_get_hit_vector setname=%s zysno=" ZINT_FORMAT,
+ setname, sysno);
+ if (!sset)
+ return ZEBRA_FAIL;
+ else
+ {
+ struct rset_key_control *kc = zebra_key_control_create(zh);
+ NMEM nmem = nmem_create();
+ struct it_key key;
+ RSET rsets[2], rset_comb;
+ RSET rset_temp = rstemp_create(nmem, kc, kc->scope,
+ res_get (zh->res, "setTmpDir"),0 );
+
+ TERMID termid;
+ RSFD rsfd = rset_open(rset_temp, RSETF_WRITE);
+
+ key.mem[0] = sysno;
+ key.mem[1] = 0;
+ key.mem[2] = 0;
+ key.mem[3] = 0;
+ key.len = 2;
+ rset_write (rsfd, &key);
+ rset_close (rsfd);
+
+ rsets[0] = rset_temp;
+ rsets[1] = rset_dup(sset->rset);
+
+ rset_comb = rsmulti_and_create(nmem, kc, kc->scope, 2, rsets);
+
+ rsfd = rset_open(rset_comb, RSETF_READ);
+
+ while (rset_read(rsfd, &key, &termid))
+ {
+ if (termid)
+ {
+ struct ord_list *ol;
+ for (ol = termid->ol; ol; ol = ol->next)
+ {
+ zebra_snippets_append(snippets, key.mem[key.len-1],
+ ol->ord, termid->name);
+ }
+ }
+ }
+ rset_close(rsfd);
+
+ rset_delete(rset_comb);
+ nmem_destroy(nmem);
+ kc->dec(kc);
+ }
+ return ZEBRA_OK;
+}
+
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+