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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: roottree.hxx,v $
*
* $Revision: 1.12 $
*
* last change: $Author: rt $ $Date: 2005-09-08 03:54:35 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
#ifndef CONFIGMGR_ROOTTREE_HXX_
#define CONFIGMGR_ROOTTREE_HXX_
#ifndef CONFIGMGR_UTILITY_HXX_
#include "utility.hxx"
#endif
#ifndef INCLUDED_MEMORY
#include <memory>
#define INCLUDED_MEMORY
#endif
namespace configmgr
{
//-----------------------------------------------------------------------------
class SubtreeChange;
struct TreeChangeList;
//-----------------------------------------------------------------------------
namespace memory
{
class Segment;
class Accessor;
}
//-----------------------------------------------------------------------------
namespace data
{
class NodeAccess;
}
//-----------------------------------------------------------------------------
namespace configuration
{
//-----------------------------------------------------------------------------
class Tree; typedef Tree RootTree;
class TreeRef;
class TreeImpl;
class NodeRef;
class NodeChangesInformation;
class AbsolutePath;
class TemplateProvider;
typedef unsigned int NodeOffset;
typedef unsigned int TreeDepth;
//-----------------------------------------------------------------------------
RootTree createReadOnlyTree( AbsolutePath const& aRootPath,
memory::Segment const* _pDataSegment,
data::NodeAccess const& _aCacheNode,
TreeDepth nDepth,
TemplateProvider const& aTemplateProvider);
RootTree createUpdatableTree( AbsolutePath const& aRootPath,
memory::Segment const* _pDataSegment,
data::NodeAccess const& _aCacheNode,
TreeDepth nDepth,
TemplateProvider const& aTemplateProvider);
//-----------------------------------------------------------------------------
class CommitHelper : Noncopyable
{
struct Data;
std::auto_ptr<Data> m_pData;
TreeImpl* m_pTree;
public:
CommitHelper(TreeRef const& aTree);
~CommitHelper();
// collect all changes into rChangeList
bool prepareCommit(memory::Accessor const & _aAccessor, TreeChangeList& rChangeList);
// finish and clean up the changes in rChangeList after they are integrated
void finishCommit(memory::Accessor const & _aAccessor, TreeChangeList& rChangeList);
// restore the changes in rChangeList as pending
void revertCommit(memory::Accessor const & _aAccessor, TreeChangeList& rChangeList);
// throw away and clean up the changes in rChangeList after a commit failed
void failedCommit(memory::Accessor const & _aAccessor, TreeChangeList& rChangeList);
// dispose of auxiliary data for a commit operation
void reset();
};
//-----------------------------------------------------------------------------
/** adjusts <var>aTree</var> tree to the (externally produced) changes under <var>aExternalChanges</var>
and collects the changes this induces locally.
@param rLocalChanges
a collection that will hold the changes induced by <var>aExternalChanges</var>.
@param aExternalChanges
a structured change that has already been applied to the master tree.
@param aBaseTree
the Tree that contains (directly) the affected node of <var>aExternalChanges</var>.
@param aBaseNode
a NodeRef referring to the (directly) affected node of <var>aExternalChanges</var>.
@return
<TRUE/> if any changes occur in this tree (so rLocalChanges is not empty), <FALSE/> otherwise.
*/
bool adjustToChanges( NodeChangesInformation& rLocalChanges,
Tree const& aBaseTree, NodeRef const& aBaseNode,
SubtreeChange const& aExternalChange) ;
//-----------------------------------------------------------------------------
}
}
#endif // CONFIGMGR_ROOTTREE_HXX_
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