* Sebastian Hammer, Adam Dickmeiss
*
* $Log: rsbool.c,v $
- * Revision 1.8 1995-10-12 12:41:55 adam
+ * Revision 1.13 1997-12-18 10:54:24 adam
+ * New method result set method rs_hits that returns the number of
+ * hits in result-set (if known). The ranked result set returns real
+ * number of hits but only when not combined with other operands.
+ *
+ * Revision 1.12 1997/10/31 12:37:01 adam
+ * Code calls xfree() instead of free().
+ *
+ * Revision 1.11 1997/09/09 13:38:15 adam
+ * Partial port to WIN95/NT.
+ *
+ * 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.
*
*/
#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
#include <assert.h>
#include <rsbool.h>
-#include <alexutil.h>
+#include <zebrautl.h>
-static void *r_create(const struct rset_control *sel, void *parms);
+static void *r_create(const struct rset_control *sel, void *parms,
+ int *flags);
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_hits (RSET ct, void *oi);
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 const rset_control control_and =
{
- "AND set type",
+ "and",
r_create,
r_open,
r_close,
r_delete,
r_rewind,
r_count,
+ r_hits,
r_read_and,
r_write,
r_score
static const rset_control control_or =
{
- "OR set type",
+ "or",
r_create,
r_open,
r_close,
r_delete,
r_rewind,
r_count,
+ r_hits,
r_read_or,
r_write,
r_score
static const rset_control control_not =
{
- "NOT set type",
+ "not",
r_create,
r_open,
r_close,
r_delete,
r_rewind,
r_count,
+ r_hits,
r_read_not,
r_write,
r_score
struct rset_bool_info *info;
};
-static void *r_create (const struct rset_control *sel, void *parms)
+static void *r_create (const struct rset_control *sel, void *parms,
+ int *flags)
{
rset_bool_parms *bool_parms = parms;
struct rset_bool_info *info;
- info = xmalloc (sizeof(struct rset_bool_info));
+ 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;
info->cmp = bool_parms->cmp;
info->rfd_list = NULL;
return info;
logf (LOG_FATAL, "bool set type is read-only");
return NULL;
}
- flag = 0;
rfd = xmalloc (sizeof(*rfd));
rfd->next = info->rfd_list;
info->rfd_list = rfd;
+ rfd->info = info;
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->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->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;
}
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!");
struct rset_bool_info *info = ct->buf;
assert (info->rfd_list == NULL);
+ rset_delete (info->rset_l);
+ rset_delete (info->rset_r);
xfree (info);
}
return 0;
}
+static int r_hits (RSET ct, void *oi)
+{
+ return -1;
+}
+
static int r_read_and (RSFD rfd, void *buf)
{
struct rset_bool_rfd *p = rfd;