* Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
* Distributed under the terms of the MIT License.
*/
#ifndef OBJECT_ID_H
#define OBJECT_ID_H
#include <Referenceable.h>
class ObjectID : public BReferenceable {
public:
ObjectID();
virtual ~ObjectID();
inline uint32 HashValue() const;
virtual bool operator==(const ObjectID& other) const = 0;
inline bool operator!=(const ObjectID& other) const;
protected:
virtual uint32 ComputeHashValue() const = 0;
protected:
mutable uint32 fHashValue;
};
uint32
ObjectID::HashValue() const
{
if (fHashValue == 0)
fHashValue = ComputeHashValue();
return fHashValue;
}
bool
ObjectID::operator!=(const ObjectID& other) const
{
return !(*this == other);
}
#endif
