The Simons     Component Library

           

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Entry.h

//
//  SCL : Simons Component Library
//
//
//  Filename:   Entry.h
//  Contents:   Entry class
//  Author:     Anthony J H Simons
//  Revised:    7 November 2005

// This software is distributed free in the hope that others will
// find it useful.  However, it comes WITHOUT ANY WARRANTY.  No
// liability can be accepted for software failure, merchantability
// or fitness for a particular purpose.  You can redistribute this
// software in its original form, or in a modified form, provided
// that this disclaimer is retained in the file banner.

#ifndef SCL_ENTRY
#define SCL_ENTRY

#include "Object.h"             // Include my superclass type
#include "EntryID.h"            // Include my pointer type

#include "ReaderID.h"           // Depend on the pointer types
#include "WriterID.h"


class Entry : public Object {
private:
        ObjectID domainKey;
        ObjectID rangeValue;
        Entry(const Entry&);
public:
        Entry();
        virtual ~Entry();
        Entry(ObjectID, ObjectID);
        virtual ObjectID clone() const;
        virtual Natural hash() const;
        virtual Order compare(ObjectID) const;
        Order compare(EntryID) const;
        Order deepCompare(EntryID) const;
        virtual Void readOn(ReaderID);
        virtual Void writeOn(WriterID) const;
        ObjectID domain() const;
        ObjectID range() const;
};


inline Natural Entry::hash() const {
        return domainKey->hash();
}

inline ObjectID Entry::domain() const { return domainKey; }


inline ObjectID Entry::range() const { return rangeValue; }


inline EntryID::EntryID() {}

inline EntryID::~EntryID() {}

inline EntryID::EntryID(const Null* null) :
        ObjectID(null) {}
        
inline EntryID::EntryID(const Entry* entry) :
        ObjectID(entry) {}
        
inline EntryID::EntryID(const EntryID& pointer) :
        ObjectID(pointer) {}
        
inline EntryID& EntryID::operator=(const Entry* entry) {
        assign(entry);
        return *this;
}

inline EntryID& EntryID::operator=(const EntryID& pointer) {
        assign(pointer);
        return *this;
}


#endif

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