f054c25c9e
2007/10/16 12:58:14 fs 1.1.2.3: removed circular include 2007/10/16 06:21:50 fs 1.1.2.2: #i10000# 2007/10/15 13:30:05 fs 1.1.2.1: #i82222# dedicated class for holding a local reference to an JNI object
115 lines
3.5 KiB
C++
115 lines
3.5 KiB
C++
/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: LocalRef.hxx,v $
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*
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* $Revision: 1.2 $
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*
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* last change: $Author: ihi $ $Date: 2007-11-21 15:07:06 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2005 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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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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