it_bus/transaction_participant.h

#ifndef IT_BUS_TRANSACTION_PARTICIPANT_
#define IT_BUS_TRANSACTION_PARTICIPANT_
//
//      Copyright (c) 2005 IONA Technologies PLC. All Rights Reserved.
//
#include <it_bus/ref_counted_base.h>
#include <it_bus/types.h>
#include <it_bus/var.h>

namespace IT_Bus
{
    class TransactionManager;

    class IT_BUS_API TransactionParticipant : public virtual RefCountedBase
    {
      public:
        virtual ~TransactionParticipant();

        enum VoteOutcome {
            VoteCommit,
            VoteRollback,
            VoteReadOnly
        };

        virtual void
        commit_one_phase()=0;

        virtual VoteOutcome
        prepare()=0;

        virtual void
        commit()=0;

        virtual void
        rollback()=0;

        virtual void
        set_manager(
            TransactionManager*    tx_manager
        )=0;

        virtual String
        preferred_transaction_manager()=0;

      protected:
        // protect against inappropiate construction
        TransactionParticipant();

      private:
        TransactionParticipant(const TransactionParticipant&);
        TransactionParticipant& operator=(const TransactionParticipant&);
    };
    typedef Var<TransactionParticipant> TransactionParticipant_var;
    typedef TransactionParticipant* TransactionParticipant_ptr;
}

#endif 

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