/*************************************************************************
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: objectregistry.hxx,v $
 * $Revision: 1.9 $
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * (a copy is included in the LICENSE file that accompanied this code).
 *
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#ifndef CONFIGMGR_API_OBJECTREGISTRY_HXX_
#define CONFIGMGR_API_OBJECTREGISTRY_HXX_

#include "noderef.hxx"

#include <osl/mutex.hxx>
#include <vos/refernce.hxx>

#include <hash_map>
#include "tracer.hxx"

namespace configmgr
{
    namespace configapi
    {

        class NodeElement;

        class ObjectRegistry : public vos::OReference
        {
        public:
            typedef configuration::NodeID Key;
            typedef NodeElement*    Element;
            typedef NodeElement*    ElementArg;
            static Element notFound() { return 0; }

            struct KeyHash
            {
                size_t operator() (const Key& rKey) const {return rKey.hashCode();}
            };
            struct KeyEq
            {
                bool operator() (const Key& lhs,const Key& rhs) const {return lhs == rhs;}
            };
            typedef std::hash_map<Key,Element,KeyHash, KeyEq> ObjectMap;
        public:
            ObjectRegistry() {}
            ~ObjectRegistry();

            Element findElement(Key const& aNode) const
            {
                ObjectMap::const_iterator aFound = m_aMap.find(aNode);

                return (aFound != m_aMap.end()) ? aFound->second : notFound();
            }
            void registerElement(Key const& aNode, ElementArg aElement)
            {
                OSL_ENSURE(m_aMap.find(aNode) == m_aMap.end(), "ERROR: Node is already registered");

                m_aMap[aNode] = aElement;
            }
            void revokeElement(Key const& aNode, ElementArg aElement)
            {
                ObjectMap::iterator aFound = m_aMap.find(aNode);

                if (aFound != m_aMap.end())
                {
                    OSL_ENSURE(aFound->second == aElement,"Found unexpected element in map");

                    if (aFound->second == aElement)
                        m_aMap.erase(aFound);
                }
            }
        private:
            ObjectMap m_aMap;
        };
//-----------------------------------------------------------------------------
    }
}

#endif // CONFIGMGR_API_FACTORY_HXX_