Drizzled Public API Documentation

uuid_function.cc
1 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
3  *
4  * Copyright (C) 2008 Sun Microsystems, Inc.
5  * Copyright (C) 2010 Stewart Smith
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; version 2 of the License.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <config.h>
22 
23 #include <drizzled/charset.h>
24 #include <drizzled/function/str/strfunc.h>
25 #include <drizzled/item/func.h>
26 #include <drizzled/plugin/function.h>
27 
28 #include <uuid/uuid.h>
29 
30 #define UUID_LENGTH (8+1+4+1+4+1+4+1+12)
31 
32 namespace plugin {
33 namespace uuid {
34 
36 {
37 public:
39  void fix_length_and_dec()
40  {
41  collation.set(drizzled::system_charset_info);
42  /*
43  NOTE! uuid() should be changed to use 'ascii'
44  charset when hex(), format(), md5(), etc, and implicit
45  number-to-string conversion will use 'ascii'
46  */
47  max_length= UUID_LENGTH * drizzled::system_charset_info->mbmaxlen;
48  }
49  const char *func_name() const{ return "uuid"; }
51 };
52 
54 {
55  uuid_t uu;
56  char *uuid_string;
57 
58  /* 36 characters for uuid string +1 for NULL */
59  str->realloc(UUID_LENGTH+1);
60  str->length(UUID_LENGTH);
61  str->set_charset(drizzled::system_charset_info);
62  uuid_string= (char *) str->ptr();
63  uuid_generate(uu);
64  uuid_unparse(uu, uuid_string);
65 
66  return str;
67 }
68 
69 } // uuid
70 } // plugin
71 
72 static int initialize(drizzled::module::Context &context)
73 {
75 
76  return 0;
77 }
78 
79 DRIZZLE_DECLARE_PLUGIN
80 {
81  DRIZZLE_VERSION_ID,
82  "uuid",
83  "1.1",
84  "Stewart Smith, Brian Aker",
85  N_("UUID function using libuuid"),
86  drizzled::PLUGIN_LICENSE_GPL,
87  initialize,
88  NULL,
89  NULL
90 }
91 DRIZZLE_DECLARE_PLUGIN_END;
drizzled::String * val_str(drizzled::String *)