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+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_CONNECTIVITY_SOURCE_INC_JAVA_GLOBALREF_HXX
+#define INCLUDED_CONNECTIVITY_SOURCE_INC_JAVA_GLOBALREF_HXX
+
+#include <java/LocalRef.hxx>
+#include <java/lang/Object.hxx>
+
+
+namespace connectivity::jdbc
+{
+ /** helper class to hold a local ref to a JNI object
+ */
+ template< typename T >
+ class GlobalRef
+ {
+ public:
+ GlobalRef()
+ :m_object( nullptr )
+ {
+ }
+
+ GlobalRef( const GlobalRef& _source )
+ :m_object( nullptr )
+ {
+ *this = _source;
+ }
+
+ GlobalRef& operator=( const GlobalRef& _source )
+ {
+ if ( &_source == this )
+ return *this;
+
+ SDBThreadAttach t;
+ set( t.env(), _source.get() );
+ return *this;
+ }
+
+ ~GlobalRef() COVERITY_NOEXCEPT_FALSE
+ {
+ reset();
+ }
+
+ void reset()
+ {
+ if ( m_object != nullptr )
+ {
+ SDBThreadAttach t;
+ t.env().DeleteGlobalRef( m_object );
+ m_object = nullptr;
+ }
+ }
+
+ void set( JNIEnv& _environment, T _object )
+ {
+ if ( m_object != nullptr )
+ _environment.DeleteGlobalRef( m_object );
+ m_object = _object;
+ if ( m_object )
+ m_object = static_cast< T >( _environment.NewGlobalRef( m_object ) );
+ }
+
+ void set( LocalRef< T >& _object )
+ {
+ set( _object.env(), _object.release() );
+ }
+
+ T get() const
+ {
+ return m_object;
+ }
+
+ bool is() const
+ {
+ return m_object != nullptr;
+ }
+
+ private:
+ T m_object;
+ };
+
+
+} // namespace connectivity::jdbc
+
+
+#endif // INCLUDED_CONNECTIVITY_SOURCE_INC_JAVA_GLOBALREF_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */