-/*
- * Copyright (C) 1994-1995, Index Data I/S
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: rsbool.c,v $
- * 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.
- *
- */
+/* This file is part of the Zebra server.
+ Copyright (C) 2004-2013 Index Data
+
+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 this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+*/
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
#include <assert.h>
-#include <rsbool.h>
-#include <alexutil.h>
-
-static rset_control *r_create(const struct rset_control *sel, void *parms);
-static RSFD r_open (rset_control *ct, int flag);
-static void r_close (RSFD rfd);
-static void r_delete (rset_control *ct);
-static void r_rewind (RSFD rfd);
-static int r_count (rset_control *ct);
-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 =
-{
- "AND set type",
- 0,
- r_create,
- r_open,
- r_close,
- r_delete,
- r_rewind,
- r_count,
- r_read_and,
- r_write,
- r_score
-};
+#include <idzebra/util.h>
+#include <rset.h>
-static const rset_control control_or =
-{
- "OR set type",
- 0,
- r_create,
- r_open,
- r_close,
- r_delete,
- r_rewind,
- r_count,
- r_read_or,
- r_write,
- r_score
-};
+#ifndef RSET_DEBUG
+#define RSET_DEBUG 0
+#endif
-static const rset_control control_not =
+static RSFD r_open(RSET ct, int flag);
+static void r_close(RSFD rfd);
+static void r_delete(RSET ct);
+static int r_forward(RSFD rfd, void *buf, TERMID *term, const void *untilbuf);
+static void r_pos(RSFD rfd, double *current, double *total);
+static int r_read_not(RSFD rfd, void *buf, TERMID *term);
+static int r_write(RSFD rfd, const void *buf);
+static void r_get_terms(RSET ct, TERMID *terms, int maxterms, int *curterm);
+
+static const struct rset_control control_not =
{
- "NOT set type",
- 0,
- r_create,
+ "not",
+ r_delete,
+ r_get_terms,
r_open,
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;
-
-struct rset_bool_info {
- int key_size;
+struct rset_private {
RSET rset_l;
RSET rset_r;
- int (*cmp)(const void *p1, const void *p2);
- struct rset_bool_rfd *rfd_list;
};
-struct rset_bool_rfd {
+struct rfd_private {
+ zint hits;
RSFD rfd_l;
RSFD rfd_r;
int more_l;
int more_r;
void *buf_l;
void *buf_r;
- struct rset_bool_rfd *next;
- struct rset_bool_info *info;
-};
+ TERMID term_l;
+ TERMID term_r;
+ int tail;
+};
-static rset_control *r_create (const struct rset_control *sel, void *parms)
+static RSET rsbool_create_base(const struct rset_control *ctrl,
+ NMEM nmem,
+ struct rset_key_control *kcontrol,
+ int scope, RSET rset_l, RSET rset_r)
{
- rset_control *newct;
- rset_bool_parms *bool_parms = parms;
- struct rset_bool_info *info;
-
- newct = xmalloc(sizeof(*newct));
- memcpy (newct, sel, sizeof(*sel));
- newct->buf = xmalloc (sizeof(struct rset_bool_info));
- info = (struct rset_bool_info*) newct->buf;
- info->key_size = bool_parms->key_size;
- info->rset_l = bool_parms->rset_l;
- info->rset_r = bool_parms->rset_r;
- info->cmp = bool_parms->cmp;
- info->rfd_list = NULL;
- return newct;
+ RSET children[2], rnew;
+ struct rset_private *info;
+
+ children[0] = rset_l;
+ children[1] = rset_r;
+ rnew = rset_create_base(ctrl, nmem, kcontrol, scope, 0, 2, children);
+ info = (struct rset_private *) nmem_malloc(rnew->nmem, sizeof(*info));
+ info->rset_l = rset_l;
+ info->rset_r = rset_r;
+ rnew->priv = info;
+ return rnew;
}
-static RSFD r_open (rset_control *ct, int flag)
+RSET rset_create_not(NMEM nmem, struct rset_key_control *kcontrol,
+ int scope, RSET rset_l, RSET rset_r)
{
- struct rset_bool_info *info = ct->buf;
- struct rset_bool_rfd *rfd;
-
- if (flag & RSETF_WRITE)
- {
- logf (LOG_FATAL, "bool set type is read-only");
- return NULL;
- }
- rfd = xmalloc (sizeof(*rfd));
- rfd->next = info->rfd_list;
- info->rfd_list = rfd;
-
- rfd->buf_l = xmalloc (info->key_size);
- rfd->buf_r = xmalloc (info->key_size);
- rfd->rfd_l = rset_open (info->rset_l, flag);
- rfd->rfd_r = rset_open (info->rset_r, flag);
- 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->info = info;
- return rfd;
+ return rsbool_create_base(&control_not, nmem, kcontrol,
+ scope, rset_l, rset_r);
}
-static void r_close (RSFD rfd)
+static void r_delete(RSET ct)
{
- struct rset_bool_info *info = ((struct rset_bool_rfd*)rfd)->info;
- struct rset_bool_rfd **rfdp;
-
- for (rfdp = &info->rfd_list; *rfdp; rfdp = &(*rfdp)->next)
- if (*rfdp == rfd)
- {
- xfree ((*rfdp)->buf_l);
- xfree ((*rfdp)->buf_r);
- rset_close (info->rset_l, (*rfdp)->rfd_l);
- rset_close (info->rset_r, (*rfdp)->rfd_r);
- *rfdp = (*rfdp)->next;
- free (rfd);
- return;
- }
- logf (LOG_FATAL, "r_close but no rfd match!");
- assert (0);
}
-static void r_delete (rset_control *ct)
+static RSFD r_open(RSET ct, int flag)
{
- struct rset_bool_info *info = ct->buf;
+ struct rset_private *info = (struct rset_private *) ct->priv;
+ RSFD rfd;
+ struct rfd_private *p;
- assert (info->rfd_list == NULL);
- xfree (info);
- xfree (ct);
-}
+ if (flag & RSETF_WRITE)
+ {
+ yaz_log(YLOG_FATAL, "bool set type is read-only");
+ return NULL;
+ }
+ rfd = rfd_create_base(ct);
+ if (rfd->priv)
+ p = (struct rfd_private *)rfd->priv;
+ else {
+ p = nmem_malloc(ct->nmem,sizeof(*p));
+ rfd->priv = p;
+ p->buf_l = nmem_malloc(ct->nmem, ct->keycontrol->key_size);
+ p->buf_r = nmem_malloc(ct->nmem, ct->keycontrol->key_size);
+ }
-static void r_rewind (RSFD rfd)
-{
- struct rset_bool_info *info = ((struct rset_bool_rfd*)rfd)->info;
- struct rset_bool_rfd *p = 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);
-}
+ yaz_log(YLOG_DEBUG,"rsbool (%s) open [%p]", ct->control->desc, rfd);
+ p->hits=0;
-static int r_count (rset_control *ct)
-{
- return 0;
+ p->rfd_l = rset_open (info->rset_l, RSETF_READ);
+ p->rfd_r = rset_open (info->rset_r, RSETF_READ);
+ p->more_l = rset_read(p->rfd_l, p->buf_l, &p->term_l);
+ p->more_r = rset_read(p->rfd_r, p->buf_r, &p->term_r);
+ p->tail = 0;
+ return rfd;
}
-static int r_read_and (RSFD rfd, void *buf)
+static void r_close (RSFD rfd)
{
- struct rset_bool_rfd *p = rfd;
- struct rset_bool_info *info = p->info;
-
- while (p->more_l && p->more_r)
- {
- int cmp;
+ struct rfd_private *prfd=(struct rfd_private *)rfd->priv;
- cmp = (*info->cmp)(p->buf_l, p->buf_r);
- 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;
- }
- 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);
- 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);
- return 1;
- }
- else if (cmp > 1)
- 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);
- }
- return 0;
+ rset_close (prfd->rfd_l);
+ rset_close (prfd->rfd_r);
}
-static int r_read_or (RSFD rfd, void *buf)
+static int r_forward(RSFD rfd, void *buf, TERMID *term,
+ const void *untilbuf)
{
- struct rset_bool_rfd *p = rfd;
- struct rset_bool_info *info = p->info;
-
- while (p->more_l || p->more_r)
- {
- int cmp;
-
- if (p->more_l && p->more_r)
- cmp = (*info->cmp)(p->buf_l, p->buf_r);
- else if (p->more_r)
- cmp = 2;
- else
- cmp = -2;
- 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;
- }
- 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);
- 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);
- return 1;
- }
- }
- return 0;
+ struct rfd_private *p = (struct rfd_private *)rfd->priv;
+ const struct rset_key_control *kctrl=rfd->rset->keycontrol;
+
+ if ( p->more_l && ((kctrl->cmp)(untilbuf,p->buf_l)>=rfd->rset->scope) )
+ p->more_l = rset_forward(p->rfd_l, p->buf_l, &p->term_l, untilbuf);
+ if ( p->more_r && ((kctrl->cmp)(untilbuf,p->buf_r)>=rfd->rset->scope))
+ p->more_r = rset_forward(p->rfd_r, p->buf_r, &p->term_r, untilbuf);
+ p->tail = 0;
+ return rset_read(rfd,buf,term);
}
-static int r_read_not (RSFD rfd, void *buf)
+
+/*
+ 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_not(RSFD rfd, void *buf, TERMID *term)
{
- struct rset_bool_rfd *p = rfd;
- struct rset_bool_info *info = p->info;
+ struct rfd_private *p = (struct rfd_private *)rfd->priv;
+ const struct rset_key_control *kctrl = rfd->rset->keycontrol;
- while (p->more_l || p->more_r)
+ while (p->more_l)
{
int cmp;
- if (p->more_l && p->more_r)
- cmp = (*info->cmp)(p->buf_l, p->buf_r);
- else if (p->more_r)
- cmp = 2;
+ if (p->more_r)
+ cmp = (*kctrl->cmp)(p->buf_l, p->buf_r);
else
- cmp = -2;
- 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);
+ cmp = -rfd->rset->scope;
+
+ if (cmp <= -rfd->rset->scope)
+ { /* cmp == -2 */
+ memcpy (buf, p->buf_l, kctrl->key_size);
+ if (term)
+ *term=p->term_l;
+ p->more_l = rset_read(p->rfd_l, p->buf_l, &p->term_l);
+ p->hits++;
return 1;
}
- else if (cmp > 1)
- p->more_r = rset_read (info->rset_r, p->rfd_r, p->buf_r);
- else
+ else if (cmp >= rfd->rset->scope) /* cmp >1 */
{
- memcpy (buf, p->buf_l, info->key_size);
+ p->more_r = rset_forward( p->rfd_r, p->buf_r,
+ &p->term_r, p->buf_l);
+ }
+ else
+ { /* cmp== -1, 0, or 1 */
+ memcpy (buf, p->buf_l, kctrl->key_size);
+ if (term)
+ *term = p->term_l;
do
{
- p->more_l = rset_read (info->rset_l, p->rfd_l, p->buf_l);
+ p->more_l = rset_read(p->rfd_l, p->buf_l, &p->term_l);
if (!p->more_l)
break;
- cmp = (*info->cmp)(p->buf_l, buf);
- } while (cmp >= -1 && cmp <= 1);
+ cmp = (*kctrl->cmp)(p->buf_l, buf);
+ } while (abs(cmp)<rfd->rset->scope);
+ /* (cmp >= -1 && cmp <= 1) */
do
{
- p->more_r = rset_read (info->rset_r, p->rfd_r, p->buf_r);
+ p->more_r = rset_read(p->rfd_r, p->buf_r, &p->term_r);
if (!p->more_r)
break;
- cmp = (*info->cmp)(p->buf_r, buf);
- } while (cmp >= -1 && cmp <= 1);
+ cmp = (*kctrl->cmp)(p->buf_r, buf);
+ } while (abs(cmp)<rfd->rset->scope);
+ /* (cmp >= -1 && cmp <= 1) */
}
}
return 0;
}
-static int r_write (RSFD rfd, const void *buf)
+static int r_write(RSFD rfd, const void *buf)
{
- logf (LOG_FATAL, "bool set type is read-only");
+ yaz_log(YLOG_FATAL, "bool set type is read-only");
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 rfd_private *p = (struct rfd_private *)rfd->priv;
+ double lcur, ltot;
+ double rcur, rtot;
+ double r;
+ ltot = -1;
+ rtot = -1;
+ rset_pos(p->rfd_l, &lcur, <ot);
+ rset_pos(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 = rcur = 0; /* if only one useful, use it */
+ if (ltot < 0)
+ ltot = lcur = 0;
+ if (rtot+ltot < 1)
+ { /* empty rset */
+ *current = *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(YLOG_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
}
+static void r_get_terms(RSET ct, TERMID *terms, int maxterms, int *curterm)
+{
+ struct rset_private *info = (struct rset_private *) ct->priv;
+ rset_getterms(info->rset_l, terms, maxterms, curterm);
+ rset_getterms(info->rset_r, terms, maxterms, curterm);
+}
+
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+
projects / idzebra-moved-to-github.git / blobdiff