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       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       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:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef CONNECTIVITY_CONTEXTCLASSLOADER_HXX
      21             : #define CONNECTIVITY_CONTEXTCLASSLOADER_HXX
      22             : 
      23             : #include "java/GlobalRef.hxx"
      24             : 
      25             : namespace comphelper
      26             : {
      27             :     class ResourceBasedEventLogger;
      28             : }
      29             : 
      30             : //........................................................................
      31             : namespace connectivity { namespace jdbc
      32             : {
      33             : //........................................................................
      34             : 
      35             :     //====================================================================
      36             :     //= ContextClassLoaderScope
      37             :     //====================================================================
      38             :     /**
      39             :     */
      40             :     class ContextClassLoaderScope
      41             :     {
      42             :     public:
      43             :         /** creates the instance. If isActive returns <FALSE/> afterwards, then an exception
      44             :             happend in the JVM, which should be raised as UNO exception by the caller
      45             : 
      46             :             @param  environment
      47             :                 the current JNI environment
      48             :             @param  newClassLoader
      49             :                 the new class loader to set at the current thread
      50             :             @param  _rLoggerForErrors
      51             :                 the logger which should be passed to java_lang_object::ThrowLoggedSQLException in case
      52             :                 an error occurs
      53             :             @param  _rxErrorContext
      54             :                 the context which should be passed to java_lang_object::ThrowLoggedSQLException in case
      55             :                 an error occurs
      56             : 
      57             :         */
      58             :         ContextClassLoaderScope(
      59             :             JNIEnv& environment,
      60             :             const GlobalRef< jobject >& newClassLoader,
      61             :             const ::comphelper::ResourceBasedEventLogger& _rLoggerForErrors,
      62             :             const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >& _rxErrorContext
      63             :         );
      64             : 
      65           0 :         ~ContextClassLoaderScope() { pop(true); }
      66             : 
      67             :         void pop() { pop(false); }
      68             : 
      69           0 :         bool isActive() const
      70             :         {
      71           0 :             return  ( m_currentThread.is() )
      72           0 :                 &&  ( m_setContextClassLoaderMethod != NULL );
      73             :         }
      74             : 
      75             :     private:
      76             :         ContextClassLoaderScope(ContextClassLoaderScope &); // not defined
      77             :         void operator =(ContextClassLoaderScope &); // not defined
      78             : 
      79             :         void pop( bool clearExceptions );
      80             : 
      81             :         JNIEnv&                             m_environment;
      82             :         LocalRef< jobject >                 m_currentThread;
      83             :         LocalRef< jobject >                 m_oldContextClassLoader;
      84             :         jmethodID                           m_setContextClassLoaderMethod;
      85             :     };
      86             : 
      87             : 
      88             : //........................................................................
      89             : } } // namespace connectivity::jdbc
      90             : //........................................................................
      91             : 
      92             : #endif // CONNECTIVITY_CONTEXTCLASSLOADER_HXX
      93             : 
      94             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */