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
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef CONNECTIVITY_LOCALREF_HXX
#define CONNECTIVITY_LOCALREF_HXX
/** === begin UNO includes === **/
/** === end UNO includes === **/
#include <jvmaccess/virtualmachine.hxx>
//........................................................................
namespace connectivity { namespace jdbc
{
//........................................................................
//====================================================================
//= LocalRef
//====================================================================
/** helper class to hold a local ref to a JNI object
Note that this class never actually calls NewLocalRef. It is assumed that all objects
passed are already acquired with a local ref (as it usually is the case if you obtain
the object from an JNI method).
*/
template< typename T >
class LocalRef
{
public:
explicit LocalRef( JNIEnv& environment )
:m_environment( environment )
,m_object( NULL )
{
}
LocalRef( JNIEnv& environment, T object )
:m_environment( environment )
,m_object( object )
{
}
~LocalRef()
{
reset();
}
T release()
{
T t = m_object;
m_object = NULL;
return t;
}
void set( T object ) { reset(); m_object = object; }
void reset()
{
if ( m_object != NULL )
{
m_environment.DeleteLocalRef( m_object );
m_object = NULL;
}
}
JNIEnv& env() const { return m_environment; }
T get() const { return m_object; }
bool is() const { return m_object != NULL; }
private:
LocalRef(LocalRef &); // not defined
void operator =(LocalRef &); // not defined
protected:
JNIEnv& m_environment;
T m_object;
};
//........................................................................
} } // namespace connectivity::jdbc
//........................................................................
#endif // CONNECTIVITY_LOCALREF_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
