it_bus/transaction_participant.h

00001 #ifndef IT_BUS_TRANSACTION_PARTICIPANT_
00002 #define IT_BUS_TRANSACTION_PARTICIPANT_
00003 //
00004 //      Copyright (c) 2005 IONA Technologies PLC. All Rights Reserved.
00005 //
00006 #include <it_bus/transaction_type_alias.h>
00007 #include <it_bus/ref_counted_base.h>
00008 #include <it_bus/types.h>
00009 #include <it_bus/var.h>
00010 
00011 namespace IT_Bus
00012 {
00013     class TransactionManager;
00014 
00026     class IT_BUS_API TransactionParticipant : public virtual RefCountedBase
00027     {
00028       public:
00029         virtual ~TransactionParticipant();
00030 
00043         enum VoteOutcome {
00044             VoteCommit,
00045             VoteRollback,
00046             VoteReadOnly
00047         };
00048 
00053         virtual void
00054         commit_one_phase()=0;
00055 
00063         virtual VoteOutcome
00064         prepare()=0;
00065 
00070         virtual void
00071         commit()=0;
00072 
00078         virtual void
00079         rollback()=0;
00080 
00093         virtual void
00094         set_manager(
00095             TransactionManager*    tx_manager
00096         )=0;
00097 
00121         virtual String
00122         preferred_transaction_manager()=0;
00123 
00124       protected:
00125         // protect against inappropiate construction
00126         TransactionParticipant();
00127 
00128       private:
00129         TransactionParticipant(const TransactionParticipant&);
00130         TransactionParticipant& operator=(const TransactionParticipant&);
00131     };
00132 }
00133 
00134 #endif 

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