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
|
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <drizzled/server_includes.h>
#include <drizzled/sql_udf.h>
#include <drizzled/item/func.h>
#include <drizzled/function/str/strfunc.h>
class Item_func_hello_world : public Item_str_func
{
public:
const char *func_name() const { return "hello_world"; }
String *val_str(String* s) {
s->set(STRING_WITH_LEN("Hello World!"),system_charset_info);
return s;
};
void fix_length_and_dec() {
max_length=strlen("Hello World!");
}
};
Item_func* create_hello_world_udf_item(MEM_ROOT* m)
{
return new (m) Item_func_hello_world();
}
static struct udf_func hello_world_udf = {
{ C_STRING_WITH_LEN("hello_world") },
create_hello_world_udf_item
};
static int hello_world_plugin_init(void *p)
{
udf_func **f = (udf_func**) p;
*f= &hello_world_udf;
return 0;
}
static int hello_world_plugin_deinit(void *p)
{
udf_func *udff = (udf_func *) p;
(void)udff;
return 0;
}
mysql_declare_plugin(hello_world)
{
DRIZZLE_UDF_PLUGIN,
"hello_world",
"1.0",
"Mark Atwood",
"Hello, world!",
PLUGIN_LICENSE_GPL,
hello_world_plugin_init, /* Plugin Init */
hello_world_plugin_deinit, /* Plugin Deinit */
NULL, /* status variables */
NULL, /* system variables */
NULL /* config options */
}
mysql_declare_plugin_end;
|