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
|
/* -*- 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 .
*/
#include <java/ContextClassLoader.hxx>
#include <java/lang/Object.hxx>
namespace connectivity::jdbc
{
using ::com::sun::star::uno::Reference;
using ::com::sun::star::uno::XInterface;
using ::connectivity::java_lang_Object;
ContextClassLoaderScope::ContextClassLoaderScope( JNIEnv& environment, const GlobalRef< jobject >& newClassLoader,
const ::comphelper::EventLogger& _rLoggerForErrors, const Reference< XInterface >& _rxErrorContext )
:m_environment( environment )
,m_currentThread( environment )
,m_oldContextClassLoader( environment )
,m_setContextClassLoaderMethod( nullptr )
{
if ( !newClassLoader.is() )
return;
do // artificial loop for easier flow control
{
LocalRef< jclass > threadClass( m_environment );
threadClass.set( m_environment.FindClass( "java/lang/Thread" ) );
if ( !threadClass.is() )
break;
jmethodID currentThreadMethod( m_environment.GetStaticMethodID(
threadClass.get(), "currentThread", "()Ljava/lang/Thread;" ) );
if ( currentThreadMethod == nullptr )
break;
m_currentThread.set( m_environment.CallStaticObjectMethod( threadClass.get(), currentThreadMethod ) );
if ( !m_currentThread.is() )
break;
jmethodID getContextClassLoaderMethod( m_environment.GetMethodID(
threadClass.get(), "getContextClassLoader", "()Ljava/lang/ClassLoader;" ) );
if ( getContextClassLoaderMethod == nullptr )
break;
m_oldContextClassLoader.set( m_environment.CallObjectMethod( m_currentThread.get(), getContextClassLoaderMethod ) );
LocalRef< jthrowable > throwable( m_environment, m_environment.ExceptionOccurred() );
if ( throwable.is() )
break;
m_setContextClassLoaderMethod = m_environment.GetMethodID(
threadClass.get(), "setContextClassLoader", "(Ljava/lang/ClassLoader;)V" );
if ( m_setContextClassLoaderMethod == nullptr )
break;
}
while ( false );
if ( !isActive() )
{
java_lang_Object::ThrowLoggedSQLException( _rLoggerForErrors, &environment, _rxErrorContext );
return;
}
// set the new class loader
m_environment.CallObjectMethod( m_currentThread.get(), m_setContextClassLoaderMethod, newClassLoader.get() );
LocalRef< jthrowable > throwable( m_environment, m_environment.ExceptionOccurred() );
if ( throwable.is() )
{
m_currentThread.reset();
m_setContextClassLoaderMethod = nullptr;
java_lang_Object::ThrowLoggedSQLException( _rLoggerForErrors, &environment, _rxErrorContext );
}
}
ContextClassLoaderScope::~ContextClassLoaderScope()
{
if ( isActive() )
{
LocalRef< jobject > currentThread( m_currentThread.env(), m_currentThread.release() );
jmethodID setContextClassLoaderMethod( m_setContextClassLoaderMethod );
m_setContextClassLoaderMethod = nullptr;
m_environment.CallObjectMethod( currentThread.get(), setContextClassLoaderMethod, m_oldContextClassLoader.get() );
m_environment.ExceptionClear();
}
}
} // namespace connectivity::jdbc
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
