entity.h

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#ifndef _ENTITY_H
#define _ENTITY_H

#include "object.h"
#include <string>

using std::ostream;
using std::string;

namespace container {

class Entity: public Object {
public:

   const static Info * const TYPE_INFO;

protected:

   const static int COMPARE_KEY_TO_NULL_RVAL;

private:

   static int nextDefaultKey;

   int defaultKey;
   mutable string* keyAsString;

public:

   Entity();

   Entity(int key);

   Entity(const Entity& pattern);
   virtual ~Entity();

   Entity & operator=(const Entity& second);

   /*********************  Entity Methods (public) *********************/

   virtual int compareKeyTo(const Entity& second) const;

   const string& getKeyAsString() const;

protected:

   /*********************  Entity Methods (protected) *********************/

   int getDefaultKey();

   void invalidateKeyAsString();

   virtual string* generateKeyAsString() const;

public:

   /*********************  Object Methods (public) *********************/

   virtual ostream& renderState(ostream& os) const;

   virtual const Info* typeInfo() const;

   virtual Object* clone(bool deepCopy = false) const;

};

} // namespace container
#endif /* _ENTITY_H */

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