109 lines
3.4 KiB
C++
109 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#ifndef CONNECTIVITY_LOCALREF_HXX
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#define CONNECTIVITY_LOCALREF_HXX
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/** === begin UNO includes === **/
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/** === end UNO includes === **/
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#include <jvmaccess/virtualmachine.hxx>
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//........................................................................
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namespace connectivity { namespace jdbc
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{
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//........................................................................
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//====================================================================
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//= LocalRef
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//====================================================================
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/** helper class to hold a local ref to a JNI object
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Note that this class never actually calls NewLocalRef. It is assumed that all objects
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passed are already acquired with a local ref (as it usually is the case if you obtain
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the object from an JNI method).
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*/
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template< typename T >
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class LocalRef
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{
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public:
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explicit LocalRef( JNIEnv& environment )
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:m_environment( environment )
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,m_object( NULL )
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{
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}
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LocalRef( JNIEnv& environment, T object )
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:m_environment( environment )
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,m_object( object )
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{
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}
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~LocalRef()
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{
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reset();
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}
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T release()
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{
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T t = m_object;
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m_object = NULL;
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return t;
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}
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void set( T object ) { reset(); m_object = object; }
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void reset()
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{
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if ( m_object != NULL )
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{
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m_environment.DeleteLocalRef( m_object );
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m_object = NULL;
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}
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}
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JNIEnv& env() const { return m_environment; }
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T get() const { return m_object; }
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bool is() const { return m_object != NULL; }
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private:
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LocalRef(LocalRef &); // not defined
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void operator =(LocalRef &); // not defined
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protected:
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JNIEnv& m_environment;
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T m_object;
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};
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//........................................................................
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} } // namespace connectivity::jdbc
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//........................................................................
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#endif // CONNECTIVITY_LOCALREF_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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