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
74
75
76
77
78
79
80
81
82
83
84
|
#include <bcon.h>
#include <mongoc.h>
#include <stdio.h>
static void
log_query (const bson_t *doc,
const bson_t *query)
{
char *str1;
char *str2;
str1 = bson_as_json (doc, NULL);
str2 = bson_as_json (query, NULL);
printf ("Matching %s against %s\n", str2, str1);
bson_free (str1);
bson_free (str2);
}
static void
check_match (const bson_t *doc,
const bson_t *query)
{
bson_error_t error;
mongoc_matcher_t *matcher = mongoc_matcher_new (query, &error);
if (!matcher) {
fprintf (stderr, "Error: %s\n", error.message);
return;
}
if (mongoc_matcher_match (matcher, doc)) {
printf (" Document matched!\n");
} else {
printf (" No match.\n");
}
mongoc_matcher_destroy (matcher);
}
static void
example (void)
{
bson_t *query;
bson_t *doc;
doc = BCON_NEW ("hello", "[", "{", "foo", BCON_UTF8 ("bar"), "}", "]");
query = BCON_NEW ("hello.0.foo", BCON_UTF8 ("bar"));
log_query (doc, query);
check_match (doc, query);
bson_destroy (doc);
bson_destroy (query);
/* i is > 1 or i < -1. */
query = BCON_NEW ("$or", "[",
"{", "i", "{", "$gt", BCON_INT32 (1), "}", "}",
"{", "i", "{", "$lt", BCON_INT32 (-1), "}", "}", "]");
doc = BCON_NEW ("i", BCON_INT32 (2));
log_query (doc, query);
check_match (doc, query);
bson_destroy (doc);
doc = BCON_NEW ("i", BCON_INT32 (0));
log_query (doc, query);
check_match (doc, query);
bson_destroy (doc);
bson_destroy (query);
}
int
main (int argc,
char *argv[])
{
mongoc_init ();
example ();
mongoc_cleanup ();
return 0;
}
|
