173 lines
6.6 KiB
C++
173 lines
6.6 KiB
C++
/*************************************************************************
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*
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* $RCSfile: treeaccessor.hxx,v $
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*
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* $Revision: 1.2 $
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*
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* last change: $Author: jb $ $Date: 2002-03-28 08:47:03 $
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*
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* The Contents of this file are made available subject to the terms of
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* either of the following licenses
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*
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* - GNU Lesser General Public License Version 2.1
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* - Sun Industry Standards Source License Version 1.1
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*
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* Sun Microsystems Inc., October, 2000
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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 2000 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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* Sun Industry Standards Source License Version 1.1
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* =================================================
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* The contents of this file are subject to the Sun Industry Standards
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* Source License Version 1.1 (the "License"); You may not use this file
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* except in compliance with the License. You may obtain a copy of the
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* License at http://www.openoffice.org/license.html.
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*
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* Software provided under this License is provided on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
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* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
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* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
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* See the License for the specific provisions governing your rights and
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* obligations concerning the Software.
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*
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* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
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*
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* Copyright: 2000 by Sun Microsystems, Inc.
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*
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* All Rights Reserved.
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*
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* Contributor(s): _______________________________________
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*
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*
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************************************************************************/
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#ifndef CONFIGMGR_TREEACCESSOR_HXX
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#define CONFIGMGR_TREEACCESSOR_HXX
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#ifndef CONFIGMGR_TREEADDRESS_HXX
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#include "treeaddress.hxx"
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#endif
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#ifndef CONFIGMGR_ACCESSOR_HXX
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#include "accessor.hxx"
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#endif
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#ifndef CONFIGMGR_NODEACCESS_HXX
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#include "nodeaccess.hxx"
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#endif
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#ifndef INCLUDED_CSTDDEF
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#include <cstddef>
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#define INCLUDED_CSTDDEF
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#endif
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namespace configmgr
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{
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// -----------------------------------------------------------------------------
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namespace memory { class UpdateAccessor; }
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// -----------------------------------------------------------------------------
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namespace data
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{
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// -------------------------------------------------------------------------
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using memory::Accessor;
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// -------------------------------------------------------------------------
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class ValueNodeAccess;
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class GroupNodeAccess;
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class SetNodeAccess;
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// -------------------------------------------------------------------------
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/** class that mediates access to the data of a tree fragment
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*/
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class TreeAccessor
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{
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public:
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typedef configuration::Name Name;
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typedef node::Attributes Attributes;
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typedef TreeAddress DataAddressType;
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typedef TreeAddress::DataType const DataType;
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typedef DataType * DataPointerType;
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static TreeAccessor emptyTree() { return TreeAccessor(); }
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TreeAccessor(Accessor const& _aAccessor, DataAddressType const& _aTreeRef)
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: m_aAccessor(_aAccessor)
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, m_pBase(_aTreeRef.m_pData)
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{}
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TreeAccessor(Accessor const& _aAccessor, DataPointerType _pTree)
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: m_aAccessor(_aAccessor)
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, m_pBase(_aAccessor.address(_pTree))
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{}
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bool isValid() const { return m_pBase.is(); }
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bool isDefault() const { return data().isDefault(); }
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Attributes getAttributes() const { return data().getAttributes(); }
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Name getName() const;
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NodeAccess getRootNode() const { return NodeAccess(m_aAccessor,rootAddress(m_pBase)); }
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DataAddressType address() const { return m_pBase; }
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Accessor accessor() const { return m_aAccessor; }
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DataType& data() const { return *static_cast<DataPointerType>(m_aAccessor.validate(m_pBase.m_pData)); }
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DataPointerType getDataPtr() const { return access(m_pBase,m_aAccessor); }
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TreeAddress copyTree(memory::UpdateAccessor & _aTargetSpace) const;
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static void freeTree(memory::UpdateAccessor & _aTargetSpace, TreeAddress _aTree);
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static Name wrapName(rtl::OUString const& _aNameString)
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{ return configuration::makeName( _aNameString, Name::NoValidate() ); }
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static TreeAddress::DataType* access(DataAddressType const& _aTreeRef, memory::UpdateAccessor& _rUpdateAccess);
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static TreeAddress::DataType const* access(DataAddressType const& _aTreeRef, Accessor const& _rReaderAccess)
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{ return static_cast<DataPointerType>(_rReaderAccess.access(_aTreeRef.m_pData)); }
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private:
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NodeAddress rootAddress(DataAddressType const& p) const;
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TreeAccessor();
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private:
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Accessor m_aAccessor;
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DataAddressType m_pBase;
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};
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// -------------------------------------------------------------------------
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// -------------------------------------------------------------------------
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inline
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TreeAccessor::Name TreeAccessor::getName() const
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{
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return wrapName( data().getName(m_aAccessor) );
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}
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// -------------------------------------------------------------------------
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inline
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NodeAddress TreeAccessor::rootAddress(DataAddressType const& p) const
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{
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sharable::Address aAddr = p.addressValue();
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if (aAddr) aAddr += offsetof(DataType,nodes);
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return NodeAddress( memory::Pointer(aAddr) );
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}
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// -------------------------------------------------------------------------
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}
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// -----------------------------------------------------------------------------
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} // namespace configmgr
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#endif // CONFIGMGR_TREEACCESSOR_HXX
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