-/* $Id: zsets.c,v 1.73 2004-12-02 17:27:04 adam Exp $
- Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004
- Index Data Aps
+/* $Id: zsets.c,v 1.88 2005-06-07 14:53:39 adam Exp $
+ Copyright (C) 1995-2005
+ Index Data ApS
This file is part of the Zebra server.
#endif
#include "index.h"
+#include <yaz/diagbib1.h>
#include <rset.h>
#define SORT_IDX_ENTRYSIZE 64
int use;
char *term;
};
+
struct zebra_set {
char *name;
RSET rset;
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 */
};
struct zset_sort_entry {
struct zset_sort_entry **entries;
};
-ZebraSet resultSetAddRPN (ZebraHandle zh, NMEM m,
- Z_RPNQuery *rpn, int num_bases,
- char **basenames,
- const char *setname)
+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()
+{
+ 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;
+ 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->errCode = 0;
- zh->errString = NULL;
zh->hits = 0;
zebraSet = resultSetAdd (zh, setname, 1);
if (!zebraSet)
- return 0;
+ return ZEBRA_FAIL;
zebraSet->locked = 1;
zebraSet->rpn = 0;
zebraSet->nmem = m;
- zebraSet->rset_nmem=nmem_create();
+ zebraSet->rset_nmem = nmem_create();
zebraSet->num_bases = num_bases;
zebraSet->basenames =
for (i = 0; i<num_bases; i++)
zebraSet->basenames[i] = nmem_strdup (zebraSet->nmem, basenames[i]);
-
- zebraSet->rset = rpn_search (zh, zebraSet->nmem, zebraSet->rset_nmem,
- rpn, zebraSet->num_bases,
- zebraSet->basenames, zebraSet->name,
- zebraSet);
+ res = resultSetSearch(zh, zebraSet->nmem, zebraSet->rset_nmem,
+ rpn, zebraSet);
zh->hits = zebraSet->hits;
if (zebraSet->rset)
zebraSet->rpn = rpn;
zebraSet->locked = 0;
- return zebraSet;
+ if (!zebraSet->rset)
+ return ZEBRA_FAIL;
+ return res;
}
void resultSetAddTerm (ZebraHandle zh, ZebraSet s, int reg_type,
for (s = zh->sets; s; s = s->next)
if (!strcmp (s->name, name))
break;
+
+ if (!log_level_set)
+ loglevels();
if (s)
{
- yaz_log(YLOG_DEBUG, "updating result set %s", name);
+ 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);
+ }
if (s->rset_nmem)
nmem_destroy (s->rset_nmem);
if (s->nmem)
{
const char *sort_max_str = zebra_get_resource(zh, "sortmax", "1000");
- yaz_log(YLOG_DEBUG, "adding result set %s", name);
+ yaz_log(log_level_resultsets, "adding result set %s", name);
s = (ZebraSet) xmalloc (sizeof(*s));
s->next = zh->sets;
zh->sets = s;
s->term_entries = 0;
s->hits = 0;
s->rset = 0;
- s->rset_nmem=0;
+ s->rset_nmem = 0;
s->nmem = 0;
s->rpn = 0;
+ s->cache_position = 0;
+ s->cache_rfd = 0;
return s;
}
if (!s->term_entries && !s->rset && s->rpn)
{
NMEM nmem = nmem_create ();
- yaz_log(YLOG_LOG, "research %s", name);
+ yaz_log(log_level_resultsets, "research %s", name);
if (!s->rset_nmem)
s->rset_nmem=nmem_create();
- s->rset =
- rpn_search (zh, nmem, s->rset_nmem, s->rpn, s->num_bases,
- s->basenames, s->name, s);
+ resultSetSearch(zh, nmem, s->rset_nmem, s->rpn, s);
nmem_destroy (nmem);
}
return s;
{
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;
if (statuses)
for (i = 0; i<num; i++)
statuses[i] = Z_DeleteStatus_resultSetDidNotExist;
- zh->errCode = 0;
- zh->errString = NULL;
while (*ss)
{
int i = -1;
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);
}
}
-ZebraMetaRecord *zebra_meta_records_create_range (ZebraHandle zh,
- const char *name,
- zint start, int num)
+ZebraMetaRecord *zebra_meta_records_create_range(ZebraHandle zh,
+ const char *name,
+ zint start, int num)
{
zint pos_small[10];
zint *pos = pos_small;
return mr;
}
-ZebraMetaRecord *zebra_meta_records_create (ZebraHandle zh, const char *name,
- int num, zint *positions)
+ZebraMetaRecord *zebra_meta_records_create(ZebraHandle zh, const char *name,
+ int num, zint *positions)
{
ZebraSet sset;
ZebraMetaRecord *sr = 0;
int i;
struct zset_sort_info *sort_info;
+ if (!log_level_set)
+ loglevels();
if (!(sset = resultSetGet (zh, name)))
return NULL;
if (!(rset = sset->rset))
sort_info = sset->sort_info;
if (sort_info)
{
- int position;
+ zint position;
for (i = 0; i<num; i++)
{
position = positions[i];
if (position > 0 && position <= sort_info->num_entries)
{
- yaz_log(YLOG_DEBUG, "got pos=%d (sorted)", position);
+ 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;
}
}
if (i < num) /* nope, get the rest, unsorted - sorry */
{
- int position = 0;
+ zint position = 0;
int num_i = 0;
zint psysno = 0;
RSFD rfd;
if (sort_info)
position = sort_info->num_entries;
- while (num_i < num && positions[num_i] < position)
+ while (num_i < num && positions[num_i] <= position)
num_i++;
- rfd = rset_open (rset, RSETF_READ);
+
+ 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[0];
- yaz_log(YLOG_LOG, "RSET READ " ZINT_FORMAT, this_sys);
if (this_sys != psysno)
{
psysno = this_sys;
if (position == positions[num_i])
{
sr[num_i].sysno = psysno;
- yaz_log(YLOG_DEBUG, "got pos=%d (unsorted)", position);
+ yaz_log(log_level_sort, "got pos=" ZINT_FORMAT " (unsorted)", position);
sr[num_i].score = -1;
num_i++;
}
}
}
- rset_close (rfd);
+ sset->cache_position = position;
+ sset->cache_psysno = psysno;
+ sset->cache_rfd = rfd;
}
}
return sr;
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)
+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)
{
- zh->errCode = 208;
- return ;
+ zebra_setError(zh, YAZ_BIB1_NO_RESULT_SET_NAME_SUPPLIED_ON_SORT, 0);
+ return ZEBRA_FAIL;
}
if (num_input_setnames > 1)
{
- zh->errCode = 230;
- return;
+ zebra_setError(zh, YAZ_BIB1_SORT_TOO_MANY_INPUT_RESULTS, 0);
+ return ZEBRA_FAIL;
}
- yaz_log(YLOG_DEBUG, "result set sort input=%s output=%s",
+ 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)
{
- zh->errCode = 30;
- zh->errString = nmem_strdup (nmem, input_setnames[0]);
- return;
+ zebra_setError(zh, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST,
+ input_setnames[0]);
+ return ZEBRA_FAIL;
}
if (!(rset = sset->rset))
{
- zh->errCode = 30;
- zh->errString = nmem_strdup (nmem, input_setnames[0]);
- return;
+ 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 = resultSetAdd (zh, output_setname, 1);
sset->rset = rset;
}
- resultSetSortSingle (zh, nmem, sset, rset, sort_sequence, sort_status);
+ return 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)
+ZEBRA_RES resultSetSortSingle(ZebraHandle zh, NMEM nmem,
+ ZebraSet sset, RSET rset,
+ Z_SortKeySpecList *sort_sequence,
+ int *sort_status)
{
int i;
int n = 0;
sort_criteria[i].relation = 'D';
else
{
- zh->errCode = 214;
- return;
+ zebra_setError(zh, YAZ_BIB1_ILLEGAL_SORT_RELATION, 0);
+ return ZEBRA_FAIL;
}
if (sks->sortElement->which == Z_SortElement_databaseSpecific)
{
- zh->errCode = 210;
- return;
+ zebra_setError(zh, YAZ_BIB1_DATABASE_SPECIFIC_SORT_UNSUPP, 0);
+ return ZEBRA_FAIL;
}
else if (sks->sortElement->which != Z_SortElement_generic)
{
- zh->errCode = 237;
- return;
+ 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(YLOG_DEBUG, "Sort: key %d is of type sortField", i+1);
- zh->errCode = 207;
- return;
+ 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(YLOG_DEBUG, "Sort: key %d is of type elementSpec", i+1);
- zh->errCode = 207;
- return;
+ 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(YLOG_DEBUG, "Sort: key %d is of type sortAttributes", i+1);
+ yaz_log(log_level_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);
- yaz_log(YLOG_DEBUG, "use value = %d", sort_criteria[i].attrUse);
+ yaz_log(log_level_sort, "use value = %d", sort_criteria[i].attrUse);
if (sort_criteria[i].attrUse == -1)
{
- zh->errCode = 116;
- return;
+ zebra_setError(
+ zh, YAZ_BIB1_USE_ATTRIBUTE_REQUIRED_BUT_NOT_SUPPLIED, 0);
+ return ZEBRA_FAIL;
}
if (sortIdx_type (zh->reg->sortIdx, sort_criteria[i].attrUse))
{
- zh->errCode = 207;
- return;
+ zebra_setError(
+ zh, YAZ_BIB1_CANNOT_SORT_ACCORDING_TO_SEQUENCE, 0);
+ return ZEBRA_FAIL;
}
break;
}
}
rfd = rset_open (rset, RSETF_READ);
while (rset_read (rfd, &key, &termid))
- /* FIXME - pass a TERMID *, and use it for something below !! */
{
zint this_sys = key.mem[0];
+ if (log_level_searchhits)
+ key_logdump_txt(log_level_searchhits, &key, termid->name);
kno++;
if (this_sys != psysno)
{
}
}
rset_close (rfd);
- yaz_log(YLOG_DEBUG, ZINT_FORMAT " keys, " ZINT_FORMAT " sysnos, sort",
- kno, sset->hits);
+ yaz_log(log_level_sort, ZINT_FORMAT " keys, " ZINT_FORMAT " sysnos, sort",
+ kno, sset->hits);
for (i = 0; i < numTerms; i++)
- yaz_log(YLOG_LOG, "term=\"%s\" type=%s count=" ZINT_FORMAT,
- terms[i]->name, terms[i]->flags, rset_count(terms[i]->rset));
+ 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)
+RSET resultSetRef(ZebraHandle zh, const char *resultSetId)
{
ZebraSet s;
return NULL;
}
-void resultSetRank (ZebraHandle zh, ZebraSet zebraSet, RSET rset, NMEM nmem)
+ZEBRA_RES resultSetRank(ZebraHandle zh, ZebraSet zebraSet,
+ RSET rset, NMEM nmem)
{
- zint kno = 0;
struct it_key key;
- RSFD rfd;
TERMID termid;
TERMID *terms;
+ zint kno = 0;
int numTerms = 0;
int n = 0;
int i;
ZebraRankClass rank_class;
- struct rank_control *rc;
struct zset_sort_info *sort_info;
const char *rank_handler_name = res_get_def(zh->res, "rank", "rank-1");
- double cur,tot;
- zint est=-2; /* -2 not done, -1 can't do, >0 actual estimate*/
- zint esthits;
- double ratio;
+ if (!log_level_set)
+ loglevels();
sort_info = zebraSet->sort_info;
sort_info->num_entries = 0;
zebraSet->hits = 0;
terms = (TERMID *) nmem_malloc(nmem, sizeof(*terms)*n);
rset_getterms(rset, terms, n, &numTerms);
- rfd = rset_open (rset, RSETF_READ);
-
- rank_class = zebraRankLookup (zh, rank_handler_name);
+ rank_class = zebraRankLookup(zh, rank_handler_name);
if (!rank_class)
{
yaz_log(YLOG_WARN, "No such rank handler: %s", rank_handler_name);
- return;
+ zebra_setError(zh, YAZ_BIB1_UNSUPP_SEARCH, "Cannot find rank handler");
+ return ZEBRA_FAIL;
}
- rc = rank_class->control;
-
- if (rset_read (rfd, &key, &termid))
+ else
{
- zint psysno = key.mem[0];
- int score;
- void *handle =
- (*rc->begin) (zh->reg, rank_class->class_handle, rset, nmem,
- terms, numTerms);
- (zebraSet->hits)++;
- esthits = atoi(res_get_def(zh->res, "estimatehits","0"));
- if (!esthits)
- est = -1; /* can not do */
- do
- {
- zint this_sys = key.mem[0]; /* FIXME - assumes scope==2 */
- zint seqno = key.mem[key.len-1]; /* FIXME - assumes scope==2 */
- kno++;
- yaz_log(YLOG_LOG, "got sysno=%lld", this_sys);
- if (this_sys != psysno)
- {
- score = (*rc->calc) (handle, psysno);
-
- resultSetInsertRank (zh, sort_info, psysno, score, 'A');
- (zebraSet->hits)++;
- psysno = this_sys;
- }
- (*rc->add) (handle, seqno, termid);
-
- if ((est==-2) && (zebraSet->hits==esthits))
- { /* time to estimate the hits */
- rset_pos(rfd,&cur,&tot);
- if (tot>0) {
- ratio = cur/tot;
- est = (zint)(0.5+zebraSet->hits/ratio);
- yaz_log(YLOG_LOG, "Estimating hits (%s) "
- "%0.1f->" ZINT_FORMAT
- "; %0.1f->" ZINT_FORMAT,
- rset->control->desc,
- cur, zebraSet->hits,
- tot, est);
- i = 0; /* round to 3 significant digits */
- while (est>1000) {
- est /= 10;
- i++;
- }
- while (i--)
- est *= 10;
- zebraSet->hits = est;
- }
- }
- }
- while (rset_read (rfd, &key,&termid) && (est<0) );
- score = (*rc->calc)(handle, psysno);
- resultSetInsertRank(zh, sort_info, psysno, score, 'A');
- (*rc->end) (zh->reg, handle);
+ RSFD rfd = rset_open(rset, RSETF_READ);
+ struct rank_control *rc = rank_class->control;
+ double score;
+
+ void *handle =
+ (*rc->begin) (zh->reg, rank_class->class_handle, rset, nmem,
+ terms, numTerms);
+ zint psysno = 0;
+ while (rset_read(rfd, &key, &termid))
+ {
+ zint this_sys = key.mem[0];
+ 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)
+ {
+ if (rfd->counted_items >= rset->hits_limit)
+ break;
+ if (psysno)
+ {
+ score = (*rc->calc) (handle, psysno);
+ resultSetInsertRank (zh, sort_info, psysno, score, 'A');
+ }
+ psysno = this_sys;
+ }
+ (*rc->add) (handle, CAST_ZINT_TO_INT(seqno), termid);
+ }
+ if (psysno)
+ {
+ score = (*rc->calc)(handle, psysno);
+ resultSetInsertRank(zh, sort_info, psysno, score, 'A');
+ }
+ (*rc->end) (zh->reg, handle);
+ rset_close (rfd);
}
- rset_close (rfd);
+ zebraSet->hits = rset->hits_count;
- yaz_log(YLOG_DEBUG, ZINT_FORMAT " keys, " ZINT_FORMAT " sysnos, rank",
- kno, zebraSet->hits);
+ yaz_log(log_level_searchterms, ZINT_FORMAT " keys, "
+ ZINT_FORMAT " sysnos, rank", kno, zebraSet->hits);
for (i = 0; i < numTerms; i++)
{
- yaz_log(YLOG_LOG, "term=\"%s\" type=%s count=" ZINT_FORMAT,
- terms[i]->name, terms[i]->flags, rset_count(terms[i]->rset));
+ 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 zebraRankLookup(ZebraHandle zh, const char *name)
{
ZebraRankClass p = zh->reg->rank_classes;
while (p && strcmp (p->control->name, name))
return p;
}
-void zebraRankInstall (struct zebra_register *reg, struct rank_control *ctrl)
+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));
reg->rank_classes = p;
}
-void zebraRankDestroy (struct zebra_register *reg)
+void zebraRankDestroy(struct zebra_register *reg)
{
ZebraRankClass p = reg->rank_classes;
while (p)
}
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 count=" ZINT_FORMAT,
+ rset, rset->term->name, 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)
+{
+ 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';
+ }
+
+ 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_LOG, "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],
+ termid->reg_type,
+ ol->ord, termid->name);
+ }
+ }
+ }
+ rset_close(rsfd);
+
+ rset_delete(rset_comb);
+ nmem_destroy(nmem);
+ }
+ return ZEBRA_OK;
+}
+