YAZ  5.23.1
gfs-example.c
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1 /* This file is part of the YAZ toolkit.
2  * Copyright (C) Index Data
3  * See the file LICENSE for details.
4  */
8 #if HAVE_CONFIG_H
9 #include <config.h>
10 #endif
11 
12 #include <stdio.h>
13 #include <stdlib.h>
14 
15 #include <yaz/log.h>
16 #include <yaz/backend.h>
17 #include <yaz/diagbib1.h>
18 #include <yaz/matchstr.h>
19 #include <yaz/snprintf.h>
20 
21 /* session handle . Put anything you like in here! */
22 struct my_handle {
23  int counter;
24 };
25 
26 static int my_search(void *handle, bend_search_rr *rr)
27 {
28  struct my_handle *my_p = (struct my_handle *) handle;
29 
30  if (rr->num_bases != 1)
31  {
33  return 0;
34  }
35  /* Throw Database unavailable if other than Default */
36  if (!yaz_matchstr (rr->basenames[0], "Default"))
37  ; /* Default is OK in our test */
38  else
39  {
41  rr->errstring = rr->basenames[0];
42  return 0;
43  }
44 
45  rr->hits = 123; /* dummy hit count */
46  my_p->counter++;
47  return 0;
48 }
49 
50 /* retrieval of a single record (present, and piggy back search) */
51 static int my_fetch(void *handle, bend_fetch_rr *r)
52 {
53  const Odr_oid *oid = r->request_format;
54 
55  r->last_in_set = 0;
56  r->basename = "Default";
58 
59  /* if no record syntax was given assume XML */
60  if (!oid || !oid_oidcmp(oid, yaz_oid_recsyn_xml))
61  {
62  char buf[40];
63  yaz_snprintf(buf, sizeof(buf), "<record>%d</record>\n", r->number);
64 
66  r->record = odr_strdup(r->stream, buf);
67  r->len = strlen(r->record);
68  }
69  else
70  { /* only xml syntax supported . Return diagnostic */
71  char buf[OID_STR_MAX];
73  r->errstring = odr_strdup(r->stream, oid_oid_to_dotstring(oid, buf));
74  }
75  return 0;
76 }
77 
79 {
81  odr_malloc (q->stream, sizeof(*r));
82  struct my_handle *my_p = (struct my_handle *) xmalloc (sizeof(*my_p));
83 
84  my_p->counter = 0;
85  r->errcode = 0;
86  r->errstring = 0;
87  r->handle = my_p; /* user handle */
88  q->bend_search = my_search; /* register search handler */
89  q->bend_fetch = my_fetch; /* register fetch handle */
90  q->query_charset = "UTF-8";
92 
93  return r;
94 }
95 
96 static void my_close(void *handle)
97 {
98  xfree(handle); /* release our user-defined handle */
99  return;
100 }
101 
102 int main(int argc, char **argv)
103 {
104  return statserv_main(argc, argv, my_init, my_close);
105 }
106 /*
107  * Local variables:
108  * c-basic-offset: 4
109  * c-file-style: "Stroustrup"
110  * indent-tabs-mode: nil
111  * End:
112  * vim: shiftwidth=4 tabstop=8 expandtab
113  */
114 
int records_in_same_charset
whether query_charset also applies to records
Definition: backend.h:286
char * errstring
Definition: backend.h:68
char * odr_strdup(ODR o, const char *str)
Definition: odr_mem.c:36
int(* bend_search)(void *handle, bend_search_rr *rr)
SRU/Z39.50 search handler.
Definition: backend.h:295
char * record
Definition: backend.h:109
int oid_oidcmp(const Odr_oid *o1, const Odr_oid *o2)
compares OIDs
Definition: oid_util.c:34
static int my_fetch(void *handle, bend_fetch_rr *r)
Definition: gfs-example.c:51
Odr_oid * output_format
Definition: backend.h:111
static int my_search(void *handle, bend_search_rr *rr)
Definition: gfs-example.c:26
result for init handler (must be filled by handler)
Definition: backend.h:320
short Odr_oid
Definition: oid_util.h:42
int counter
Definition: gfs-example.c:23
Information for the Init handler.
Definition: backend.h:251
void * odr_malloc(ODR o, size_t size)
Definition: odr_mem.c:31
ODR stream
encoding stream (for results)
Definition: backend.h:256
Header for YAZ iconv interface.
const Odr_oid yaz_oid_recsyn_xml[]
Definition: oid_std.c:89
Odr_oid * request_format
Definition: backend.h:102
Information for fetch record handler.
Definition: backend.h:98
char * oid_oid_to_dotstring(const Odr_oid *oid, char *oidbuf)
converts OID to string (dot notation)
Definition: oid_util.c:59
char * basename
Definition: backend.h:107
#define xfree(x)
utility macro which calls xfree_f
Definition: xmalloc.h:53
char * query_charset
character set (encoding) for query terms
Definition: backend.h:279
#define YAZ_BIB1_DATABASE_UNAVAILABLE
Definition: diagbib1.h:53
#define OID_STR_MAX
Definition: oid_util.h:40
char * errstring
Definition: backend.h:323
Information for Z39.50/SRU search handler.
Definition: backend.h:54
int(* bend_fetch)(void *handle, bend_fetch_rr *rr)
SRU/Z39.50 fetch handler.
Definition: backend.h:297
int yaz_matchstr(const char *s1, const char *s2)
match strings - independent of case and &#39;-&#39;
Definition: matchstr.c:42
#define xmalloc(x)
utility macro which calls malloc_f
Definition: xmalloc.h:49
Odr_oid * odr_oiddup(ODR odr, const Odr_oid *o)
Definition: odr_util.c:60
int main(int argc, char **argv)
Definition: gfs-example.c:102
static void my_close(void *handle)
Definition: gfs-example.c:96
char ** basenames
Definition: backend.h:58
#define YAZ_BIB1_COMBI_OF_SPECIFIED_DATABASES_UNSUPP
Definition: diagbib1.h:33
void yaz_snprintf(char *buf, size_t size, const char *fmt,...)
Definition: snprintf.c:31
Header for GFS.
#define YAZ_BIB1_RECORD_SYNTAX_UNSUPP
Definition: diagbib1.h:114
Logging utility.
Odr_int hits
Definition: backend.h:66
Header for config file reading utilities.
char * errstring
Definition: backend.h:113
static bend_initresult * my_init(bend_initrequest *q)
Definition: gfs-example.c:78
void * handle
Definition: backend.h:324
Diagnostics: Generated by csvtodiag.tcl from ./bib1.csv.
int last_in_set
Definition: backend.h:110
int statserv_main(int argc, char **argv, bend_initresult *(*bend_init)(bend_initrequest *r), void(*bend_close)(void *handle))
Definition: statserv.c:1504
int num_bases
Definition: backend.h:57