/*
- * Copyright (C) 1994-1995, Index Data I/S
+ * Copyright (C) 1994-1999, Index Data
* All rights reserved.
* Sebastian Hammer, Adam Dickmeiss
*
* $Log: rsisam.c,v $
- * Revision 1.11 1995-10-06 14:38:05 adam
+ * Revision 1.20 1999-05-26 07:49:14 adam
+ * C++ compilation.
+ *
+ * Revision 1.19 1999/02/02 14:51:34 adam
+ * Updated WIN32 code specific sections. Changed header.
+ *
+ * Revision 1.18 1998/03/05 08:36:28 adam
+ * New result set model.
+ *
+ * Revision 1.17 1997/12/18 10:54:25 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 1.16 1997/10/31 12:37:01 adam
+ * Code calls xfree() instead of free().
+ *
+ * Revision 1.15 1996/10/29 13:55:22 adam
+ * Include of zebrautl.h instead of alexutil.h.
+ *
+ * Revision 1.14 1995/12/11 09:15:24 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 1.13 1995/10/12 12:41:56 adam
+ * Private info (buf) moved from struct rset_control to struct rset.
+ * Bug fixes in relevance.
+ *
+ * Revision 1.12 1995/10/10 14:00:04 adam
+ * Function rset_open changed its wflag parameter to general flags.
+ *
+ * Revision 1.11 1995/10/06 14:38:05 adam
* New result set method: r_score.
* Local no (sysno) and score is transferred to retrieveCtrl.
*
#include <stdio.h>
#include <assert.h>
#include <rsisam.h>
-#include <alexutil.h>
+#include <zebrautl.h>
-static rset_control *r_create(const struct rset_control *sel, void *parms);
-static RSFD r_open (rset_control *ct, int wflag);
+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_control *ct);
+static void r_delete (RSET ct);
static void r_rewind (RSFD rfd);
-static int r_count (rset_control *ct);
-static int r_read (RSFD rfd, void *buf);
+static int r_count (RSET ct);
+static int r_read (RSFD rfd, void *buf, int *term_index);
static int r_write (RSFD rfd, const void *buf);
-static int r_score (RSFD rfd, int *score);
-static const rset_control control =
+static const struct rset_control control =
{
- "ISAM set type",
- 0,
+ "isam",
r_create,
r_open,
r_close,
r_count,
r_read,
r_write,
- r_score
};
-const rset_control *rset_kind_isam = &control;
+const struct rset_control *rset_kind_isam = &control;
struct rset_ispt_info {
ISPT pt;
struct rset_ispt_info *ispt_list;
};
-static rset_control *r_create(const struct rset_control *sel, void *parms)
+static void *r_create(RSET ct, const struct rset_control *sel, void *parms)
{
- rset_control *newct;
- rset_isam_parms *pt = parms;
+ rset_isam_parms *pt = (rset_isam_parms *) parms;
struct rset_isam_info *info;
- newct = xmalloc(sizeof(*newct));
- memcpy(newct, sel, sizeof(*sel));
-
- if (!(newct->buf = xmalloc (sizeof(struct rset_isam_info))))
- return 0;
- info = newct->buf;
+ ct->flags |= RSET_FLAG_VOLATILE;
+ info = (struct rset_isam_info *) xmalloc (sizeof(struct rset_isam_info));
info->is = pt->is;
info->pos = pt->pos;
info->ispt_list = NULL;
- return newct;
+
+ ct->no_rset_terms = 1;
+ ct->rset_terms = (RSET_TERM *) xmalloc (sizeof(*ct->rset_terms));
+ ct->rset_terms[0] = pt->rset_term;
+ return info;
}
-RSFD r_open (rset_control *ct, int wflag)
+RSFD r_open (RSET ct, int flag)
{
- struct rset_isam_info *info = ct->buf;
+ struct rset_isam_info *info = (struct rset_isam_info *) ct->buf;
struct rset_ispt_info *ptinfo;
logf (LOG_DEBUG, "risam_open");
- if (wflag)
+ if (flag & RSETF_WRITE)
{
logf (LOG_FATAL, "ISAM set type is read-only");
return NULL;
}
- ptinfo = xmalloc (sizeof(*ptinfo));
+ ptinfo = (struct rset_ispt_info *) xmalloc (sizeof(*ptinfo));
ptinfo->next = info->ispt_list;
info->ispt_list = ptinfo;
ptinfo->pt = is_position (info->is, info->pos);
ptinfo->info = info;
+
+ if (ct->rset_terms[0]->nn < 0)
+ ct->rset_terms[0]->nn = is_numkeys (ptinfo->pt);
return ptinfo;
}
{
is_pt_free ((*ptinfop)->pt);
*ptinfop = (*ptinfop)->next;
- free (rfd);
+ xfree (rfd);
return;
}
logf (LOG_FATAL, "r_close but no rfd match!");
assert (0);
}
-static void r_delete (rset_control *ct)
+static void r_delete (RSET ct)
{
- struct rset_isam_info *info = ct->buf;
+ struct rset_isam_info *info = (struct rset_isam_info *) ct->buf;
logf (LOG_DEBUG, "rsisam_delete");
assert (info->ispt_list == NULL);
+ rset_term_destroy (ct->rset_terms[0]);
+ xfree (ct->rset_terms);
xfree (info);
- xfree (ct);
}
static void r_rewind (RSFD rfd)
is_rewind( ((struct rset_ispt_info*) rfd)->pt);
}
-static int r_count (rset_control *ct)
+static int r_count (RSET ct)
{
return 0;
}
-static int r_read (RSFD rfd, void *buf)
+static int r_read (RSFD rfd, void *buf, int *term_index)
{
+ *term_index = 0;
return is_readkey( ((struct rset_ispt_info*) rfd)->pt, buf);
}
logf (LOG_FATAL, "ISAM set type is read-only");
return -1;
}
-
-static int r_score (RSFD rfd, int *score)
-{
- *score = -1;
- return -1;
-}
projects / idzebra-moved-to-github.git / blobdiff