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
|
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2010 Monty Taylor
*
* 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
*/
#pragma once
/**
* @file Defines a Plugin Context
*
* A module::Context object is a proxy object containing state information
* about the plugin being registered that knows how to perform registration
* actions.
*
* The plugin registration system creates a new module::Context for each
* module::Module during the initializtion phase and passes a reference to
* the module::Context to the module's init method. This allows the plugin
* to call registration methods without having access to larger module::Registry
* calls. It also provides a filter layer through which calls are made in order
* to force things like proper name prefixing and the like.
*/
#include <boost/noncopyable.hpp>
#include <drizzled/module/registry.h>
#include <drizzled/visibility.h>
namespace drizzled {
namespace module {
class DRIZZLED_API Context : boost::noncopyable
{
public:
Context(module::Registry ®istry_arg,
module::Module *module_arg) :
registry(registry_arg),
module(module_arg)
{ }
template<class T>
void add(T *plugin)
{
plugin->setModule(module);
registry.add(plugin);
}
template<class T>
void remove(T *plugin)
{
registry.remove(plugin);
}
void registerVariable(sys_var *var);
option_map getOptions();
static std::string prepend_name(std::string module_name,
const std::string &var_name);
private:
module::Registry ®istry;
module::Module *module;
};
} /* namespace module */
} /* namespace drizzled */
|