blob: 4d9c107213f570522f044ba04347a910c50ae7d2 (
plain)
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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_CONNECTIVITY_SOURCE_DRIVERS_FIREBIRD_SUBCOMPONENT_HXX
#define INCLUDED_CONNECTIVITY_SOURCE_DRIVERS_FIREBIRD_SUBCOMPONENT_HXX
#include <cppuhelper/propshlp.hxx>
#include <osl/diagnose.h>
#include <osl/mutex.hxx>
namespace cppu { class IPropertyArrayHelper; }
namespace com::sun::star::lang { class XComponent; }
namespace connectivity::firebird
{
/// @throws css::lang::DisposedException
void checkDisposed(bool _bThrow);
template <class TYPE>
class OPropertyArrayUsageHelper
{
protected:
static sal_Int32 s_nRefCount;
static ::cppu::IPropertyArrayHelper* s_pProps;
static ::osl::Mutex s_aMutex;
public:
OPropertyArrayUsageHelper();
virtual ~OPropertyArrayUsageHelper();
/** call this in the getInfoHelper method of your derived class. The method returns the array helper of the
class, which is created if necessary.
*/
::cppu::IPropertyArrayHelper* getArrayHelper();
protected:
/** used to implement the creation of the array helper which is shared amongst all instances of the class.
This method needs to be implemented in derived classes.
<BR>
The method gets called with s_aMutex acquired.
@return a pointer to the newly created array helper. Must not be NULL.
*/
virtual ::cppu::IPropertyArrayHelper* createArrayHelper( ) const = 0;
};
template<class TYPE>
sal_Int32 OPropertyArrayUsageHelper< TYPE >::s_nRefCount = 0;
template<class TYPE>
::cppu::IPropertyArrayHelper* OPropertyArrayUsageHelper< TYPE >::s_pProps = nullptr;
template<class TYPE>
::osl::Mutex OPropertyArrayUsageHelper< TYPE >::s_aMutex;
template <class TYPE>
OPropertyArrayUsageHelper<TYPE>::OPropertyArrayUsageHelper()
{
::osl::MutexGuard aGuard(s_aMutex);
++s_nRefCount;
}
template <class TYPE>
OPropertyArrayUsageHelper<TYPE>::~OPropertyArrayUsageHelper()
{
::osl::MutexGuard aGuard(s_aMutex);
OSL_ENSURE(s_nRefCount > 0, "OPropertyArrayUsageHelper::~OPropertyArrayUsageHelper : suspicious call : have a refcount of 0 !");
if (!--s_nRefCount)
{
delete s_pProps;
s_pProps = nullptr;
}
}
template <class TYPE>
::cppu::IPropertyArrayHelper* OPropertyArrayUsageHelper<TYPE>::getArrayHelper()
{
OSL_ENSURE(s_nRefCount, "OPropertyArrayUsageHelper::getArrayHelper : suspicious call : have a refcount of 0 !");
if (!s_pProps)
{
::osl::MutexGuard aGuard(s_aMutex);
if (!s_pProps)
{
s_pProps = createArrayHelper();
OSL_ENSURE(s_pProps, "OPropertyArrayUsageHelper::getArrayHelper : createArrayHelper returned nonsense !");
}
}
return s_pProps;
}
}
#endif // INCLUDED_CONNECTIVITY_SOURCE_DRIVERS_FIREBIRD_SUBCOMPONENT_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
