-/*
- * Copyright (C) 1994-1995, Index Data I/S
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: rsbool.c,v $
- * Revision 1.10 1996-10-29 13:55:20 adam
- * Include of zebrautl.h instead of alexutil.h.
- *
- * Revision 1.9 1995/12/11 09:15:22 adam
- * New set types: sand/sor/snot - ranked versions of and/or/not in
- * ranked/semi-ranked result sets.
- * Note: the snot not finished yet.
- * New rset member: flag.
- * Bug fix: r_delete in rsrel.c did free bad memory block.
- *
- * Revision 1.8 1995/10/12 12:41:55 adam
- * Private info (buf) moved from struct rset_control to struct rset.
- * Bug fixes in relevance.
- *
- * Revision 1.7 1995/10/10 14:00:03 adam
- * Function rset_open changed its wflag parameter to general flags.
- *
- * Revision 1.6 1995/10/06 14:38:05 adam
- * New result set method: r_score.
- * Local no (sysno) and score is transferred to retrieveCtrl.
- *
- * Revision 1.5 1995/09/08 14:52:41 adam
- * Work on relevance feedback.
- *
- * Revision 1.4 1995/09/08 08:54:04 adam
- * More efficient and operation.
- *
- * Revision 1.3 1995/09/07 13:58:43 adam
- * New parameter: result-set file descriptor (RSFD) to support multiple
- * positions within the same result-set.
- * Boolean operators: and, or, not implemented.
- *
- * Revision 1.2 1995/09/06 16:11:55 adam
- * More work on boolean sets.
- *
- * Revision 1.1 1995/09/06 13:27:15 adam
- * New set type: bool. Not finished yet.
- *
- */
+/* $Id: rsbool.c,v 1.38 2004-08-20 14:44:46 heikki Exp $
+ Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004
+ 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 <stdlib.h>
+#include <string.h>
#include <assert.h>
-#include <rsbool.h>
#include <zebrautl.h>
+#include <rset.h>
+#include <rsbool.h>
+
+#ifndef RSET_DEBUG
+#define RSET_DEBUG 0
+#endif
-static void *r_create(const struct rset_control *sel, void *parms,
- int *flags);
+static void *r_create(RSET ct, const struct rset_control *sel, void *parms);
static RSFD r_open (RSET ct, int flag);
static void r_close (RSFD rfd);
static void r_delete (RSET ct);
static void r_rewind (RSFD rfd);
-static int r_count (RSET ct);
+static int r_forward(RSET ct, RSFD rfd, void *buf,
+ int (*cmpfunc)(const void *p1, const void *p2),
+ const void *untilbuf);
+static void r_pos (RSFD rfd, double *current, double *total);
static int r_read_and (RSFD rfd, void *buf);
static int r_read_or (RSFD rfd, void *buf);
static int r_read_not (RSFD rfd, void *buf);
static int r_write (RSFD rfd, const void *buf);
-static int r_score (RSFD rfd, int *score);
-static const rset_control control_and =
+static const struct rset_control control_and =
{
"and",
r_create,
r_close,
r_delete,
r_rewind,
- r_count,
+ r_forward,
+ r_pos,
r_read_and,
r_write,
- r_score
};
-static const rset_control control_or =
+static const struct rset_control control_or =
{
"or",
r_create,
r_close,
r_delete,
r_rewind,
- r_count,
+ r_forward,
+ r_pos,
r_read_or,
r_write,
- r_score
};
-static const rset_control control_not =
+static const struct rset_control control_not =
{
"not",
r_create,
r_close,
r_delete,
r_rewind,
- r_count,
+ r_forward,
+ r_pos,
r_read_not,
r_write,
- r_score
};
-const rset_control *rset_kind_and = &control_and;
-const rset_control *rset_kind_or = &control_or;
-const rset_control *rset_kind_not = &control_not;
+const struct rset_control *rset_kind_and = &control_and;
+const struct rset_control *rset_kind_or = &control_or;
+const struct rset_control *rset_kind_not = &control_not;
struct rset_bool_info {
int key_size;
RSET rset_l;
RSET rset_r;
int (*cmp)(const void *p1, const void *p2);
+ void (*log_item)(int logmask, const void *p, const char *txt);
struct rset_bool_rfd *rfd_list;
};
struct rset_bool_rfd {
+ zint hits;
RSFD rfd_l;
RSFD rfd_r;
int more_l;
int more_r;
void *buf_l;
void *buf_r;
+ int tail;
struct rset_bool_rfd *next;
struct rset_bool_info *info;
};
-static void *r_create (const struct rset_control *sel, void *parms,
- int *flags)
+static void *r_create (RSET ct, const struct rset_control *sel, void *parms)
{
- rset_bool_parms *bool_parms = parms;
+ rset_bool_parms *bool_parms = (rset_bool_parms *) parms;
struct rset_bool_info *info;
- info = xmalloc (sizeof(*info));
+ info = (struct rset_bool_info *) xmalloc (sizeof(*info));
info->key_size = bool_parms->key_size;
info->rset_l = bool_parms->rset_l;
info->rset_r = bool_parms->rset_r;
if (rset_is_volatile(info->rset_l) || rset_is_volatile(info->rset_r))
- *flags |= RSET_FLAG_VOLATILE;
+ ct->flags |= RSET_FLAG_VOLATILE;
info->cmp = bool_parms->cmp;
+ info->log_item = bool_parms->log_item;
info->rfd_list = NULL;
+
return info;
}
static RSFD r_open (RSET ct, int flag)
{
- struct rset_bool_info *info = ct->buf;
+ struct rset_bool_info *info = (struct rset_bool_info *) ct->buf;
struct rset_bool_rfd *rfd;
if (flag & RSETF_WRITE)
{
- logf (LOG_FATAL, "bool set type is read-only");
- return NULL;
+ logf (LOG_FATAL, "bool set type is read-only");
+ return NULL;
}
- rfd = xmalloc (sizeof(*rfd));
+ rfd = (struct rset_bool_rfd *) xmalloc (sizeof(*rfd));
+ logf(LOG_DEBUG,"rsbool (%s) open [%p]", ct->control->desc, rfd);
rfd->next = info->rfd_list;
info->rfd_list = rfd;
rfd->info = info;
+ rfd->hits=0;
rfd->buf_l = xmalloc (info->key_size);
rfd->buf_r = xmalloc (info->key_size);
- rfd->rfd_l = rset_open (info->rset_l, RSETF_READ|RSETF_SORT_SYSNO);
- rfd->rfd_r = rset_open (info->rset_r, RSETF_READ|RSETF_SORT_SYSNO);
+ rfd->rfd_l = rset_open (info->rset_l, RSETF_READ);
+ rfd->rfd_r = rset_open (info->rset_r, RSETF_READ);
rfd->more_l = rset_read (info->rset_l, rfd->rfd_l, rfd->buf_l);
rfd->more_r = rset_read (info->rset_r, rfd->rfd_r, rfd->buf_r);
+ rfd->tail = 0;
return rfd;
}
rset_close (info->rset_l, (*rfdp)->rfd_l);
rset_close (info->rset_r, (*rfdp)->rfd_r);
*rfdp = (*rfdp)->next;
- free (rfd);
+ xfree (rfd);
return;
}
logf (LOG_FATAL, "r_close but no rfd match!");
static void r_delete (RSET ct)
{
- struct rset_bool_info *info = ct->buf;
+ struct rset_bool_info *info = (struct rset_bool_info *) ct->buf;
assert (info->rfd_list == NULL);
rset_delete (info->rset_l);
static void r_rewind (RSFD rfd)
{
struct rset_bool_info *info = ((struct rset_bool_rfd*)rfd)->info;
- struct rset_bool_rfd *p = rfd;
+ struct rset_bool_rfd *p = (struct rset_bool_rfd *) rfd;
logf (LOG_DEBUG, "rsbool_rewind");
rset_rewind (info->rset_l, p->rfd_l);
rset_rewind (info->rset_r, p->rfd_r);
p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l);
p->more_r = rset_read (info->rset_r, p->rfd_r, p->buf_r);
+ p->hits=0;
}
-static int r_count (RSET ct)
+static int r_forward (RSET ct, RSFD rfd, void *buf,
+ int (*cmpfunc)(const void *p1, const void *p2),
+ const void *untilbuf)
{
- return 0;
+ struct rset_bool_info *info = ((struct rset_bool_rfd*)rfd)->info;
+ struct rset_bool_rfd *p = (struct rset_bool_rfd *) rfd;
+ int rc;
+
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "rsbool_forward (L) [%p] '%s' (ct=%p rfd=%p m=%d,%d)",
+ rfd, ct->control->desc, ct, rfd, p->more_l, p->more_r);
+#endif
+ if ( p->more_l && ((cmpfunc)(untilbuf,p->buf_l)==2) )
+ p->more_l = rset_forward(info->rset_l, p->rfd_l, p->buf_l,
+ info->cmp, untilbuf);
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "rsbool_forward (R) [%p] '%s' (ct=%p rfd=%p m=%d,%d)",
+ rfd, ct->control->desc, ct, rfd, p->more_l, p->more_r);
+#endif
+ if ( p->more_r && ((cmpfunc)(untilbuf,p->buf_r)==2))
+ p->more_r = rset_forward(info->rset_r, p->rfd_r, p->buf_r,
+ info->cmp, untilbuf);
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "rsbool_forward [%p] calling read, m=%d,%d t=%d",
+ rfd, p->more_l, p->more_r, p->tail);
+#endif
+
+ p->tail=0;
+ rc = rset_read(ct,rfd,buf);
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "rsbool_forward returning [%p] %d m=%d,%d",
+ rfd, rc, p->more_l, p->more_r);
+#endif
+ return rc;
}
+
+/*
+ 1,1 1,3
+ 1,9 2,1
+ 1,11 3,1
+ 2,9
+
+ 1,1 1,1
+ 1,3 1,3
+ 1,9
+ 1,11
+ 2,1 2,1
+ 2,9
+ 3,1
+*/
+
static int r_read_and (RSFD rfd, void *buf)
{
- struct rset_bool_rfd *p = rfd;
+ struct rset_bool_rfd *p = (struct rset_bool_rfd *) rfd;
struct rset_bool_info *info = p->info;
- while (p->more_l && p->more_r)
+ while (p->more_l || p->more_r)
{
int cmp;
- cmp = (*info->cmp)(p->buf_l, p->buf_r);
+ if (p->more_l && p->more_r)
+ cmp = (*info->cmp)(p->buf_l, p->buf_r);
+ else if (p->more_l)
+ cmp = -2;
+ else
+ cmp = 2;
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "r_read_and [%p] looping: m=%d/%d c=%d t=%d",
+ rfd, p->more_l, p->more_r, cmp, p->tail);
+ (*info->log_item)(LOG_DEBUG, p->buf_l, "left ");
+ (*info->log_item)(LOG_DEBUG, p->buf_r, "right ");
+#endif
if (!cmp)
{
memcpy (buf, p->buf_l, info->key_size);
p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l);
- p->more_r = rset_read (info->rset_r, p->rfd_r, p->buf_r);
- return 1;
+ p->tail = 1;
}
else if (cmp == 1)
{
memcpy (buf, p->buf_r, info->key_size);
p->more_r = rset_read (info->rset_r, p->rfd_r, p->buf_r);
+ p->tail = 1;
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "r_read_and [%p] returning R m=%d/%d c=%d",
+ rfd, p->more_l, p->more_r, cmp);
+ key_logdump(LOG_DEBUG,buf);
+ (*info->log_item)(LOG_DEBUG, buf, "");
+#endif
+ p->hits++;
return 1;
}
else if (cmp == -1)
{
memcpy (buf, p->buf_l, info->key_size);
p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l);
+ p->tail = 1;
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "r_read_and [%p] returning L m=%d/%d c=%d",
+ rfd, p->more_l, p->more_r, cmp);
+ (*info->log_item)(LOG_DEBUG, buf, "");
+#endif
+ p->hits++;
return 1;
}
- else if (cmp > 1)
+ else if (cmp > 1) /* cmp == 2 */
+ {
+#define OLDCODE 0
+#if OLDCODE
+ memcpy (buf, p->buf_r, info->key_size);
+
p->more_r = rset_read (info->rset_r, p->rfd_r, p->buf_r);
- else
- p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l);
+ if (p->tail)
+ {
+ if (!p->more_r || (*info->cmp)(p->buf_r, buf) > 1)
+ p->tail = 0;
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "r_read_and returning C m=%d/%d c=%d",
+ p->more_l, p->more_r, cmp);
+ (*info->log_item)(LOG_DEBUG, buf, "");
+#endif
+ p->hits++;
+ return 1;
+ }
+#else
+
+ if (p->tail)
+ {
+ memcpy (buf, p->buf_r, info->key_size);
+ p->more_r = rset_read (info->rset_r, p->rfd_r, p->buf_r);
+ if (!p->more_r || (*info->cmp)(p->buf_r, buf) > 1)
+ p->tail = 0;
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "r_read_and [%p] returning R tail m=%d/%d c=%d",
+ rfd, p->more_l, p->more_r, cmp);
+ (*info->log_item)(LOG_DEBUG, buf, "");
+#endif
+ p->hits++;
+ return 1;
+ }
+ else
+ {
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "r_read_and [%p] about to forward R m=%d/%d c=%d",
+ rfd, p->more_l, p->more_r, cmp);
+#endif
+ if (p->more_r && p->more_l)
+ p->more_r = rset_forward( info->rset_r, p->rfd_r,
+ p->buf_r, (info->cmp), p->buf_l);
+ else
+ return 0; /* no point in reading further */
+ }
+#endif
+ }
+ else /* cmp == -2 */
+ {
+#if OLDCODE
+ memcpy (buf, p->buf_l, info->key_size);
+ p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l);
+ if (p->tail)
+ {
+ if (!p->more_l || (*info->cmp)(p->buf_l, buf) > 1)
+ p->tail = 0;
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "r_read_and [%p] returning R tail m=%d/%d c=%d",
+ rfd, p->more_l, p->more_r, cmp);
+ (*info->log_item)(LOG_DEBUG, buf, "");
+#endif
+ p->hits++;
+ return 1;
+ }
+#else
+ if (p->tail)
+ {
+ memcpy (buf, p->buf_l, info->key_size);
+ p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l);
+ if (!p->more_l || (*info->cmp)(p->buf_l, buf) > 1)
+ p->tail = 0;
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "r_read_and [%p] returning L tail m=%d/%d c=%d",
+ rfd, p->more_l, p->more_r, cmp);
+ (*info->log_item)(LOG_DEBUG, buf, "");
+#endif
+ p->hits++;
+ return 1;
+ }
+ else
+ {
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "r_read_and [%p] about to forward L m=%d/%d c=%d",
+ rfd, p->more_l, p->more_r, cmp);
+#endif
+ if (p->more_r && p->more_l)
+ p->more_l = rset_forward(
+ info->rset_l, p->rfd_l,
+ p->buf_l, (info->cmp), p->buf_r);
+ else
+ return 0; /* no point in reading further */
+ }
+#endif
+ }
}
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "r_read_and [%p] reached its end",rfd);
+#endif
return 0;
}
static int r_read_or (RSFD rfd, void *buf)
{
- struct rset_bool_rfd *p = rfd;
+ struct rset_bool_rfd *p = (struct rset_bool_rfd *) rfd;
struct rset_bool_info *info = p->info;
while (p->more_l || p->more_r)
memcpy (buf, p->buf_l, info->key_size);
p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l);
p->more_r = rset_read (info->rset_r, p->rfd_r, p->buf_r);
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "r_read_or returning A m=%d/%d c=%d",
+ p->more_l, p->more_r, cmp);
+ (*info->log_item)(LOG_DEBUG, buf, "");
+#endif
+ p->hits++;
return 1;
}
else if (cmp > 0)
{
memcpy (buf, p->buf_r, info->key_size);
p->more_r = rset_read (info->rset_r, p->rfd_r, p->buf_r);
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "r_read_or returning B m=%d/%d c=%d",
+ p->more_l, p->more_r, cmp);
+ (*info->log_item)(LOG_DEBUG, buf, "");
+#endif
+ p->hits++;
return 1;
}
else
{
memcpy (buf, p->buf_l, info->key_size);
p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l);
+#if RSET_DEBUG
+ logf (LOG_DEBUG, "r_read_or returning C m=%d/%d c=%d",
+ p->more_l, p->more_r, cmp);
+ (*info->log_item)(LOG_DEBUG, buf, "");
+#endif
+ p->hits++;
return 1;
}
}
static int r_read_not (RSFD rfd, void *buf)
{
- struct rset_bool_rfd *p = rfd;
+ struct rset_bool_rfd *p = (struct rset_bool_rfd *) rfd;
struct rset_bool_info *info = p->info;
while (p->more_l || p->more_r)
{
memcpy (buf, p->buf_l, info->key_size);
p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l);
+ p->hits++;
return 1;
}
else if (cmp > 1)
- p->more_r = rset_read (info->rset_r, p->rfd_r, p->buf_r);
+ {
+ p->more_r = rset_forward(
+ info->rset_r, p->rfd_r,
+ p->buf_r, (info->cmp), p->buf_l);
+ }
else
{
memcpy (buf, p->buf_l, info->key_size);
do
- {
+ {
p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l);
if (!p->more_l)
break;
return -1;
}
-static int r_score (RSFD rfd, int *score)
+static void r_pos (RSFD rfd, double *current, double *total)
{
- *score = -1;
- return -1;
+ struct rset_bool_rfd *p = (struct rset_bool_rfd *) rfd;
+ struct rset_bool_info *info = p->info;
+ double lcur,ltot;
+ double rcur,rtot;
+ double r;
+ ltot=-1; rtot=-1;
+ rset_pos(info->rset_l, p->rfd_l, &lcur, <ot);
+ rset_pos(info->rset_r, p->rfd_r, &rcur, &rtot);
+ if ( (rtot<0) && (ltot<0)) { /*no position */
+ *current=rcur; /* return same as you got */
+ *total=rtot; /* probably -1 for not available */
+ }
+ if ( rtot<0) { rtot=0; rcur=0;} /* if only one useful, use it */
+ if ( ltot<0) { ltot=0; lcur=0;}
+ if ( rtot+ltot < 1 ) { /* empty rset */
+ *current=0;
+ *total=0;
+ return;
+ }
+ r=1.0*(lcur+rcur)/(ltot+rtot); /* weighed average of l and r */
+ *current=(double) (p->hits);
+ *total=*current/r ;
+#if RSET_DEBUG
+ yaz_log(LOG_DEBUG,"bool_pos: (%s/%s) %0.1f/%0.1f= %0.4f ",
+ info->rset_l->control->desc, info->rset_r->control->desc,
+ *current, *total, r);
+#endif
}
-
projects / idzebra-moved-to-github.git / blobdiff