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HxDefaultDataObjectManager.h

Go to the documentation of this file.

/*
 *  Copyright (c) 2001, University of Amsterdam, The Netherlands.
 *  All rights reserved.
 *
 *  Author(s):
 *  Marc Navarro            (mnavarro@wins.uva.nl)
 */

#ifndef HxDefaultObjectManager_h
#define HxDefaultObjectManager_h

#include "HxDataObjectManager.h"
#include <list>
#include <map>


class HxDefaultDataObjectManager : public HxDataObjectManager
{
public:
                    HxDefaultDataObjectManager();

                    HxDefaultDataObjectManager(const char* repId, 
                        const char* objName);

    virtual         ~HxDefaultDataObjectManager();

    virtual void    objectCreated(const PortableServer::ObjectId& oid);
    virtual void    objectUsed(const PortableServer::ObjectId& oid);
    virtual void    objectAccessed(const PortableServer::ObjectId& oid);
    virtual void    objectDeleted(const PortableServer::ObjectId& oid);

    virtual void    setTotalLimit(HxString unit, int value);
    virtual int     getTotalLimit(HxString unit);
    virtual void    setObjectLimit(HxString unit, int value);
    virtual int     getObjectLimit(HxString unit);
    virtual int     getUsed(HxString unit);

    virtual void    getUnitList(HxStringListBackInserter slPtr);

protected:

    HxString        _objName;
    int             _totalObjLimit;
    int             _usedObjects;

    struct HxDefaultObjectInfo
    {
        //int id;
        PortableServer::ObjectId oid;
    };
    virtual HxDefaultObjectInfo* createObjectInfo();

    virtual void                 setObjectInfo(
                                    PortableServer::Servant servant, 
                                    HxDefaultObjectInfo* info);

    virtual void                 updateObjectInfo(
                                    PortableServer::Servant servant, 
                                    HxDefaultObjectInfo* info);

                                 /* Function called by "objectDeleted".
                                  * Update limits.
                                  */
    virtual void                 removeObjectInfo(HxDefaultObjectInfo* info);

                                 /* Return whether the object is beyond any
                                  * of the object limits or not.
                                  */
    virtual bool                 objectExceedsLimit(HxDefaultObjectInfo* info);

                                 /* Return whether total limits has been exceded
                                  * or not.
                                  */
    virtual bool                 limitExceeded();

                                 /* Return if objects handled by this manager 
                                  * can be modified by their operations (that is:
                                  * "objectUsed" has to check limits again or not?)
                                  */
    virtual bool                 objectCanGrow();

private:

    void                         checkLimit();

    struct lessOID : std::binary_function<PortableServer::ObjectId, PortableServer::ObjectId, bool>
    {   
        bool operator()(const PortableServer::ObjectId& x, const PortableServer::ObjectId& y) const;
    };

    typedef std::list<HxDefaultObjectInfo*>                             List;
    typedef std::map<PortableServer::ObjectId, List::iterator, lessOID> Map;

    Map                     _map;
    List                    _list;

    PortableServer::POA_var _dataPOA;
};

#endif //HxDefaultObjectManager_h

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