1 files changed, 79 insertions, 0 deletions
diff --git a/connectivity/source/inc/java/ContextClassLoader.hxx b/connectivity/source/inc/java/ContextClassLoader.hxx
new file mode 100644
index 000000000..e7079239a
--- /dev/null
+++ b/connectivity/source/inc/java/ContextClassLoader.hxx
@@ -0,0 +1,79 @@
+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <java/GlobalRef.hxx>
+
+namespace comphelper
+{
+    class EventLogger;
+}
+
+
+namespace connectivity::jdbc
+{
+    class ContextClassLoaderScope
+    {
+    public:
+        /** creates the instance. If isActive returns <FALSE/> afterwards, then an exception
+            happened in the JVM, which should be raised as UNO exception by the caller
+
+            @param  environment
+                the current JNI environment
+            @param  newClassLoader
+                the new class loader to set at the current thread
+            @param  _rLoggerForErrors
+                the logger which should be passed to java_lang_object::ThrowLoggedSQLException in case
+                an error occurs
+            @param  _rxErrorContext
+                the context which should be passed to java_lang_object::ThrowLoggedSQLException in case
+                an error occurs
+
+        */
+        ContextClassLoaderScope(
+            JNIEnv& environment,
+            const GlobalRef< jobject >& newClassLoader,
+            const ::comphelper::EventLogger& _rLoggerForErrors,
+            const css::uno::Reference< css::uno::XInterface >& _rxErrorContext
+        );
+
+        ~ContextClassLoaderScope();
+
+        bool isActive() const
+        {
+            return  ( m_currentThread.is() )
+                &&  ( m_setContextClassLoaderMethod != nullptr );
+        }
+
+    private:
+        ContextClassLoaderScope(ContextClassLoaderScope const &) = delete;
+        ContextClassLoaderScope& operator =(ContextClassLoaderScope const &) = delete;
+
+        JNIEnv&                             m_environment;
+        LocalRef< jobject >                 m_currentThread;
+        LocalRef< jobject >                 m_oldContextClassLoader;
+        jmethodID                           m_setContextClassLoaderMethod;
+    };
+
+
+} // namespace connectivity::jdbc
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */