/*
- * Copyright (C) 1994-1999, Index Data
+ * Copyright (C) 1994-2002, Index Data
* All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: rsisamc.c,v $
- * Revision 1.6 1999-02-02 14:51:35 adam
- * Updated WIN32 code specific sections. Changed header.
- *
- * Revision 1.5 1998/03/05 08:36:28 adam
- * New result set model.
- *
- * Revision 1.4 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 1.3 1997/10/31 12:37:01 adam
- * Code calls xfree() instead of free().
- *
- * Revision 1.2 1996/11/08 11:15:57 adam
- * Compressed isam fully supported.
- *
- * Revision 1.1 1996/10/29 13:41:48 adam
- * First use of isamc.
*
+ * $Id: rsisamc.c,v 1.11 2002-04-05 08:46:26 adam Exp $
*/
+
#include <stdio.h>
#include <assert.h>
-#include <rsisamc.h>
#include <zebrautl.h>
+#include <rsisamc.h>
static void *r_create(RSET ct, const struct rset_control *sel, void *parms);
static RSFD r_open (RSET ct, int flag);
ISAMC_PP pt;
struct rset_pp_info *next;
struct rset_isamc_info *info;
+ int *countp;
+ void *buf;
};
struct rset_isamc_info {
ISAMC is;
ISAMC_P pos;
+ int key_size;
+ int (*cmp)(const void *p1, const void *p2);
struct rset_pp_info *ispt_list;
};
static void *r_create(RSET ct, const struct rset_control *sel, void *parms)
{
- rset_isamc_parms *pt = parms;
+ rset_isamc_parms *pt = (rset_isamc_parms *) parms;
struct rset_isamc_info *info;
ct->flags |= RSET_FLAG_VOLATILE;
- info = xmalloc (sizeof(*info));
+ info = (struct rset_isamc_info *) xmalloc (sizeof(*info));
info->is = pt->is;
info->pos = pt->pos;
+ info->key_size = pt->key_size;
+ info->cmp = pt->cmp;
info->ispt_list = NULL;
ct->no_rset_terms = 1;
- ct->rset_terms = xmalloc (sizeof(*ct->rset_terms));
+ ct->rset_terms = (RSET_TERM *) xmalloc (sizeof(*ct->rset_terms));
ct->rset_terms[0] = pt->rset_term;
return info;
}
RSFD r_open (RSET ct, int flag)
{
- struct rset_isamc_info *info = ct->buf;
+ struct rset_isamc_info *info = (struct rset_isamc_info *) ct->buf;
struct rset_pp_info *ptinfo;
logf (LOG_DEBUG, "risamc_open");
logf (LOG_FATAL, "ISAMC set type is read-only");
return NULL;
}
- ptinfo = xmalloc (sizeof(*ptinfo));
+ ptinfo = (struct rset_pp_info *) xmalloc (sizeof(*ptinfo));
ptinfo->next = info->ispt_list;
info->ispt_list = ptinfo;
ptinfo->pt = isc_pp_open (info->is, info->pos);
ptinfo->info = info;
if (ct->rset_terms[0]->nn < 0)
ct->rset_terms[0]->nn = isc_pp_num (ptinfo->pt);
+ ct->rset_terms[0]->count = 0;
+ ptinfo->countp = &ct->rset_terms[0]->count;
+ ptinfo->buf = xmalloc (info->key_size);
return ptinfo;
}
for (ptinfop = &info->ispt_list; *ptinfop; ptinfop = &(*ptinfop)->next)
if (*ptinfop == rfd)
{
+ xfree ((*ptinfop)->buf);
isc_pp_close ((*ptinfop)->pt);
*ptinfop = (*ptinfop)->next;
xfree (rfd);
static void r_delete (RSET ct)
{
- struct rset_isamc_info *info = ct->buf;
+ struct rset_isamc_info *info = (struct rset_isamc_info *) ct->buf;
logf (LOG_DEBUG, "rsisamc_delete");
assert (info->ispt_list == NULL);
static int r_read (RSFD rfd, void *buf, int *term_index)
{
+ struct rset_pp_info *pinfo = (struct rset_pp_info *) rfd;
+ int r;
*term_index = 0;
- return isc_pp_read( ((struct rset_pp_info*) rfd)->pt, buf);
+ r = isc_pp_read(pinfo->pt, buf);
+ if (r > 0)
+ {
+ if (*pinfo->countp == 0 || (*pinfo->info->cmp)(buf, pinfo->buf) > 1)
+ {
+ memcpy (pinfo->buf, buf, pinfo->info->key_size);
+ (*pinfo->countp)++;
+ }
+ }
+ return r;
}
static int r_write (RSFD rfd, const void *buf)