src_other/tuplebase/ZTB.h

/*  @(#) $Id: ZTB.h,v 1.15 2006/07/23 21:48:31 agreen Exp $ */

/* ------------------------------------------------------------
Copyright (c) 2003 Andrew Green and Learning in Motion, Inc.
http://www.zoolib.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
------------------------------------------------------------ */

#ifndef __ZTB__
#define __ZTB__ 1
#include "zconfig.h"

#include "ZCompat_NonCopyable.h"
#include "ZTBRep.h"
#include "ZTBSpec.h"
#include "ZTxn.h"

#include <set>

// =================================================================================================
#pragma mark -
#pragma mark * ZTB


class ZTB
        {
    ZOOLIB_DEFINE_OPERATOR_BOOL_TYPES(ZTB, operator_bool_generator_type, operator_bool_type);
public:
        ZTB() {}
        ZTB(ZRef<ZTBRep> iTBRep);
        ZTB(const ZTB& iOther);
        ZTB& operator=(const ZTB& iOther);
        ~ZTB();

        operator operator_bool_type() const
                { return operator_bool_generator_type::translate(fTBRep && true); }

        uint64 AllocateID();

        uint64 Add(const ZTxn& iTxn, const ZTuple& iTuple);

        void Set(const ZTxn& iTxn, uint64 iID, const ZTuple& iTuple);

        void Erase(const ZTxn& iTxn, uint64 iID);

        ZTuple Get(const ZTxn& iTxn, uint64 iID);

        size_t Count(const ZTxn& iTxn, const ZTBQuery& iQuery);

        ZRef<ZTBRep> GetTBRep() const;

protected:
        ZRef<ZTBRep> fTBRep;
        };

// =================================================================================================
#pragma mark -
#pragma mark * ZTBTxn


class ZTBTxn
        {
private:
        ZTBTxn(); // Not implemented
        ZTBTxn& operator=(const ZTBTxn&); // Not implemented

public:
        ZTBTxn(const ZTBTxn& iOther);
        ZTBTxn(const ZTxn& iTxn, ZTB iTB);
        ~ZTBTxn();

        uint64 AllocateID() const;

        uint64 Add(const ZTuple& iTuple) const;

        void Set(uint64 iID, const ZTuple& iTuple) const;

        void Erase(uint64 iID) const;

        ZTuple Get(uint64 iID) const;

        size_t Count(const ZTBQuery& iQuery) const;

        ZTBRepTransaction* GetTBRepTransaction() const;

protected:
        mutable ZTBRepTransaction* fTBRepTransaction;
        };

// =================================================================================================
#pragma mark -
#pragma mark * ZTBIter

class ZTBIterRep;


class ZTBIter
        {
    ZOOLIB_DEFINE_OPERATOR_BOOL_TYPES(ZTBIter, operator_bool_generator_type, operator_bool_type);
public: //@{
        ZTBIter();

        ZTBIter(const ZTBIter& iOther);

        ZTBIter(const ZTxn& iTxn, ZTB iTB, const ZTBQuery& iQuery);

        ZTBIter(const ZTBTxn& iTBTxn, const ZTBQuery& iQuery);
        ~ZTBIter();

        ZTBIter& operator=(const ZTBIter& iOther);

        operator operator_bool_type() const;

        void Advance();

        size_t Advance(size_t iCount);

        size_t AdvanceAll();

        ZTuple Get() const;

        uint64 GetID() const;

        void Get(uint64* oID, ZTuple* oTuple) const;

        void Set(const ZTuple& iTuple);

        void Erase();

        size_t EraseAll();

private:
        ZRef<ZTBIterRep> fRep;
        size_t fIndex;
        };

#endif // __ZTB__

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