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Diffstat (limited to '')
-rw-r--r-- | connectivity/source/inc/java/GlobalRef.hxx | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/connectivity/source/inc/java/GlobalRef.hxx b/connectivity/source/inc/java/GlobalRef.hxx new file mode 100644 index 000000000..80888cb48 --- /dev/null +++ b/connectivity/source/inc/java/GlobalRef.hxx @@ -0,0 +1,105 @@ +/* -*- 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: */ |