1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 /*
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7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8  *
9  * This file incorporates work covered by the following license notice:
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17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
18  */
19 
20 #pragma once
21 
22 #include <java/GlobalRef.hxx>
23 
24 namespace comphelper
25 {
26     class EventLogger;
27 }
28 
29 
30 namespace connectivity::jdbc
31 {
32     class ContextClassLoaderScope
33     {
34     public:
35         /** creates the instance. If isActive returns <FALSE/> afterwards, then an exception
36             happened in the JVM, which should be raised as UNO exception by the caller
37 
38             @param  environment
39                 the current JNI environment
40             @param  newClassLoader
41                 the new class loader to set at the current thread
42             @param  _rLoggerForErrors
43                 the logger which should be passed to java_lang_object::ThrowLoggedSQLException in case
44                 an error occurs
45             @param  _rxErrorContext
46                 the context which should be passed to java_lang_object::ThrowLoggedSQLException in case
47                 an error occurs
48 
49         */
50         ContextClassLoaderScope(
51             JNIEnv& environment,
52             const GlobalRef< jobject >& newClassLoader,
53             const ::comphelper::EventLogger& _rLoggerForErrors,
54             const css::uno::Reference< css::uno::XInterface >& _rxErrorContext
55         );
56 
57         ~ContextClassLoaderScope();
58 
isActive() const59         bool isActive() const
60         {
61             return  ( m_currentThread.is() )
62                 &&  ( m_setContextClassLoaderMethod != nullptr );
63         }
64 
65     private:
66         ContextClassLoaderScope(ContextClassLoaderScope const &) = delete;
67         ContextClassLoaderScope& operator =(ContextClassLoaderScope const &) = delete;
68 
69         JNIEnv&                             m_environment;
70         LocalRef< jobject >                 m_currentThread;
71         LocalRef< jobject >                 m_oldContextClassLoader;
72         jmethodID                           m_setContextClassLoaderMethod;
73     };
74 
75 
76 } // namespace connectivity::jdbc
77 
78 
79 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
80