From 940b4d1848e8c70ab7642901a68594e8016caffc Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 18:51:28 +0200 Subject: Adding upstream version 1:7.0.4. Signed-off-by: Daniel Baumann --- connectivity/source/inc/java/LocalRef.hxx | 92 +++++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 connectivity/source/inc/java/LocalRef.hxx (limited to 'connectivity/source/inc/java/LocalRef.hxx') diff --git a/connectivity/source/inc/java/LocalRef.hxx b/connectivity/source/inc/java/LocalRef.hxx new file mode 100644 index 000000000..5973405ac --- /dev/null +++ b/connectivity/source/inc/java/LocalRef.hxx @@ -0,0 +1,92 @@ +/* -*- 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_LOCALREF_HXX +#define INCLUDED_CONNECTIVITY_SOURCE_INC_JAVA_LOCALREF_HXX + +#include + + +namespace connectivity::jdbc +{ + + /** helper class to hold a local ref to a JNI object + + Note that this class never actually calls NewLocalRef. It is assumed that all objects + passed are already acquired with a local ref (as it usually is the case if you obtain + the object from a JNI method). + */ + template< typename T > + class LocalRef final + { + public: + explicit LocalRef( JNIEnv& environment ) + :m_environment( environment ) + ,m_object( nullptr ) + { + } + + LocalRef( JNIEnv& environment, T object ) + :m_environment( environment ) + ,m_object( object ) + { + } + + ~LocalRef() + { + reset(); + } + + T release() + { + T t = m_object; + m_object = nullptr; + return t; + } + + void set( T object ) { reset(); m_object = object; } + + void reset() + { + if ( m_object != nullptr ) + { + m_environment.DeleteLocalRef( m_object ); + m_object = nullptr; + } + } + + JNIEnv& env() const { return m_environment; } + T get() const { return m_object; } + bool is() const { return m_object != nullptr; } + + private: + LocalRef(LocalRef const &) = delete; + LocalRef& operator =(LocalRef const &) = delete; + + JNIEnv& m_environment; + T m_object; + }; + + +} // namespace connectivity::jdbc + + +#endif // INCLUDED_CONNECTIVITY_SOURCE_INC_JAVA_LOCALREF_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ -- cgit v1.2.3