1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/* sample-bdb.txt - BerkeleyDB toy/sample
*
* Do a line-by-line comparison of this and sample-mdb.txt
*/
/*
* Copyright 2012 Howard Chu, Symas Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
#include <stdio.h>
#include <string.h>
#include <db.h>
int main(int argc,char * argv[])
{
int rc;
DB_ENV *env;
DB *dbi;
DBT key, data;
DB_TXN *txn;
DBC *cursor;
char sval[32], kval[32];
/* Note: Most error checking omitted for simplicity */
#define FLAGS (DB_INIT_LOCK|DB_INIT_LOG|DB_INIT_TXN|DB_INIT_MPOOL|DB_CREATE|DB_THREAD)
rc = db_env_create(&env, 0);
rc = env->open(env, "./testdb", FLAGS, 0664);
rc = db_create(&dbi, env, 0);
rc = env->txn_begin(env, NULL, &txn, 0);
rc = dbi->open(dbi, txn, "test.bdb", NULL, DB_BTREE, DB_CREATE, 0664);
memset(&key, 0, sizeof(DBT));
memset(&data, 0, sizeof(DBT));
key.size = sizeof(int);
key.data = sval;
data.size = sizeof(sval);
data.data = sval;
sprintf(sval, "%03x %d foo bar", 32, 3141592);
rc = dbi->put(dbi, txn, &key, &data, 0);
rc = txn->commit(txn, 0);
if (rc) {
fprintf(stderr, "txn->commit: (%d) %s\n", rc, db_strerror(rc));
goto leave;
}
rc = env->txn_begin(env, NULL, &txn, 0);
rc = dbi->cursor(dbi, txn, &cursor, 0);
key.flags = DB_DBT_USERMEM;
key.data = kval;
key.ulen = sizeof(kval);
data.flags = DB_DBT_USERMEM;
data.data = sval;
data.ulen = sizeof(sval);
while ((rc = cursor->c_get(cursor, &key, &data, DB_NEXT)) == 0) {
printf("key: %p %.*s, data: %p %.*s\n",
key.data, (int) key.size, (char *) key.data,
data.data, (int) data.size, (char *) data.data);
}
rc = cursor->c_close(cursor);
rc = txn->abort(txn);
leave:
rc = dbi->close(dbi, 0);
rc = env->close(env, 0);
return rc;
}
|
