connectivity/source/inc/java/ContextClassLoader.hxx

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  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             happened 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         ~ContextClassLoaderScope() { pop(true); }
  66
  67         void pop() { pop(false); }
  68
  69         bool isActive() const
  70         {
  71             return  ( m_currentThread.is() )
  72                 &&  ( 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: */