IDZEBRA  2.1.2
rsisams.c
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1 /* This file is part of the Zebra server.
2  Copyright (C) Index Data
3 
4 Zebra is free software; you can redistribute it and/or modify it under
5 the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2, or (at your option) any later
7 version.
8 
9 Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 for more details.
13 
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 
18 */
19 
20 #if HAVE_CONFIG_H
21 #include <config.h>
22 #endif
23 #include <stdio.h>
24 #include <assert.h>
25 #include <idzebra/util.h>
26 #include <rset.h>
27 
28 static RSFD r_open (RSET ct, int flag);
29 static void r_close (RSFD rfd);
30 static void r_delete (RSET ct);
31 static int r_read (RSFD rfd, void *buf, TERMID *term);
32 static void r_pos (RSFD rfd, double *current, double *total);
33 
34 static const struct rset_control control =
35 {
36  "isams",
37  r_delete,
39  r_open,
40  r_close,
41  0, /* no forward */
42  r_pos,
43  r_read,
45 };
46 
47 struct rfd_private {
49 };
50 
51 struct rset_private {
53  ISAM_P pos;
54 };
55 
56 
57 RSET rsisams_create(NMEM nmem, struct rset_key_control *kcontrol,
58  int scope,
59  ISAMS is, ISAM_P pos, TERMID term)
60 {
61  RSET rnew = rset_create_base(&control, nmem, kcontrol, scope, term, 0, 0);
62  struct rset_private *info;
63  info = (struct rset_private *) nmem_malloc(rnew->nmem, sizeof(*info));
64  rnew->priv = info;
65  info->is = is;
66  info->pos = pos;
67  return rnew;
68 }
69 
70 static void r_delete (RSET ct)
71 {
72  yaz_log (YLOG_DEBUG, "rsisams_delete");
73 }
74 
75 RSFD r_open (RSET ct, int flag)
76 {
77  struct rset_private *info = (struct rset_private *) ct->priv;
78  RSFD rfd;
79  struct rfd_private *ptinfo;
80 
81  yaz_log (YLOG_DEBUG, "risams_open");
82  if (flag & RSETF_WRITE)
83  {
84  yaz_log (YLOG_FATAL, "ISAMS set type is read-only");
85  return NULL;
86  }
87  rfd = rfd_create_base(ct);
88  if (rfd->priv)
89  ptinfo = (struct rfd_private *)(rfd->priv);
90  else {
91  ptinfo = (struct rfd_private *) nmem_malloc(ct->nmem,sizeof(*ptinfo));
92  rfd->priv = ptinfo;
93  }
94  ptinfo->pt = isams_pp_open (info->is, info->pos);
95  return rfd;
96 }
97 
98 static void r_close (RSFD rfd)
99 {
100  struct rfd_private *ptinfo = (struct rfd_private *)(rfd->priv);
101 
102  isams_pp_close (ptinfo->pt);
103 }
104 
105 
106 static int r_read (RSFD rfd, void *buf, TERMID *term)
107 {
108  struct rfd_private *ptinfo = (struct rfd_private *)(rfd->priv);
109  int rc = isams_pp_read(ptinfo->pt, buf);
110  if (rc && term)
111  *term = rfd->rset->term;
112  return rc;
113 }
114 
115 static void r_pos (RSFD rfd, double *current, double *total)
116 {
117  *current=-1; /* sorry, not implemented yet */
118  *total=-1;
119 }
120 
121 
122 /*
123  * Local variables:
124  * c-basic-offset: 4
125  * c-file-style: "Stroustrup"
126  * indent-tabs-mode: nil
127  * End:
128  * vim: shiftwidth=4 tabstop=8 expandtab
129  */
130 
ISAMS_PP isams_pp_open(ISAMS is, ISAM_P pos)
Definition: isams.c:187
void * buf
Definition: rsisamb.c:65
RSET rsisams_create(NMEM nmem, struct rset_key_control *kcontrol, int scope, ISAMS is, ISAM_P pos, TERMID term)
Definition: rsisams.c:57
void * buf
Definition: rsisamc.c:50
TERMID term
Definition: rset.h:160
zint ISAM_P
Definition: isamc.h:28
ISAM_P pos
Definition: rsisamb.c:70
static int r_read(RSFD rfd, void *buf, TERMID *term)
Definition: rsisams.c:106
int isams_pp_read(ISAMS_PP pp, void *buf)
Definition: isams.c:227
Definition: isams.c:40
RSFD rfd_create_base(RSET rs)
Common constuctor for RFDs.
Definition: rset.c:43
ISAMB is
Definition: rsisamb.c:69
static const struct rset_control control
Definition: rsisams.c:34
int rset_no_write(RSFD rfd, const void *buf)
Definition: rset.c:431
RSET rset
Definition: rset.h:74
ISAMS is
Definition: rsisams.c:52
const char * scope
Definition: tstlockscope.c:40
ISAMS_PP pt
Definition: rsisams.c:48
void * priv
Definition: rset.h:155
static void r_delete(RSET ct)
Definition: rsisams.c:70
ISAMB_PP pt
Definition: rsisamb.c:64
void rset_get_one_term(RSET ct, TERMID *terms, int maxterms, int *curterm)
is a getterms function for those that don&#39;t have any
Definition: rset.c:291
static void r_pos(RSFD rfd, double *current, double *total)
Definition: rsisams.c:115
NMEM nmem
Definition: rset.h:156
void isams_pp_close(ISAMS_PP pp)
Definition: isams.c:215
static RSFD r_open(RSET ct, int flag)
Definition: rsisams.c:75
Definition: rset.h:150
Definition: rset.h:73
void * priv
Definition: rset.h:75
Definition: rset.h:50
RSET rset_create_base(const struct rset_control *sel, NMEM nmem, struct rset_key_control *kcontrol, int scope, TERMID term, int no_children, RSET *children)
Common constuctor for RSETs.
Definition: rset.c:164
#define RSETF_WRITE
Definition: rset.h:200
static void r_close(RSFD rfd)
Definition: rsisams.c:98