connectivity/source/inc/java/ContextClassLoader.hxx

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  19
  20 #ifndef INCLUDED_CONNECTIVITY_SOURCE_INC_JAVA_CONTEXTCLASSLOADER_HXX
  21 #define INCLUDED_CONNECTIVITY_SOURCE_INC_JAVA_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     class ContextClassLoaderScope
  34     {
  35     public:
  36         /** creates the instance. If isActive returns <FALSE/> afterwards, then an exception
  37             happened in the JVM, which should be raised as UNO exception by the caller
  38
  39             @param  environment
  40                 the current JNI environment
  41             @param  newClassLoader
  42                 the new class loader to set at the current thread
  43             @param  _rLoggerForErrors
  44                 the logger which should be passed to java_lang_object::ThrowLoggedSQLException in case
  45                 an error occurs
  46             @param  _rxErrorContext
  47                 the context which should be passed to java_lang_object::ThrowLoggedSQLException in case
  48                 an error occurs
  49
  50         */
  51         ContextClassLoaderScope(
  52             JNIEnv& environment,
  53             const GlobalRef< jobject >& newClassLoader,
  54             const ::comphelper::ResourceBasedEventLogger& _rLoggerForErrors,
  55             const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >& _rxErrorContext
  56         );
  57
  58         ~ContextClassLoaderScope() { pop(true); }
  59
  60         void pop() { pop(false); }
  61
  62         bool isActive() const
  63         {
  64             return  ( m_currentThread.is() )
  65                 &&  ( m_setContextClassLoaderMethod != NULL );
  66         }
  67
  68     private:
  69         ContextClassLoaderScope(ContextClassLoaderScope &) SAL_DELETED_FUNCTION;
  70         void operator =(ContextClassLoaderScope &) SAL_DELETED_FUNCTION;
  71
  72         void pop( bool clearExceptions );
  73
  74         JNIEnv&                             m_environment;
  75         LocalRef< jobject >                 m_currentThread;
  76         LocalRef< jobject >                 m_oldContextClassLoader;
  77         jmethodID                           m_setContextClassLoaderMethod;
  78     };
  79
  80
  81
  82 } } // namespace connectivity::jdbc
  83
  84
  85 #endif // INCLUDED_CONNECTIVITY_SOURCE_INC_JAVA_CONTEXTCLASSLOADER_HXX
  86
  87 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */