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NAME

       CosTransactions_Coordinator  - This module implements the OMG CosTransactions::Coordinator
       interface.

DESCRIPTION

       To get access to the record definitions for the structures use:
       -include_lib("cosTransactions/include/CosTransactions.hrl").

EXPORTS

       create_subtransaction(Coordinator) -> Control

              Types:

                 Coordinator = #objref
                 Control = #objref

              A new subtransaction is created whose parent is the Coordinator argument.

              Raises exception:

                * 'SubtransactionsUnavailable' - if nested transactions are not supported.

                * 'Inactive' - if target transaction has already been prepared.

       get_transaction_name(Coordinator) -> Name

              Types:

                 Coordinator = #objref
                 Name = string() of type "oe_name@machine_type_timestamp"

              Returns a printable string, which describe the transaction. The main purpose is  to
              support debugging.

       get_parent_status(Coordinator) -> Status

              Types:

                 Coordinator = #objref
                 Status = atom()

              Returns  the status of the parent transaction associated with the target object. If
              the target object is a  top-level  transaction  this  operation  is  equivalent  to
              get_status/1 operation.

              Possible Status replies:

                * 'StatusCommitted'

                * 'StatusCommitting'

                * 'StatusMarkedRollback'

                * 'StatusRollingBack'

                * 'StatusRolledBack'

                * 'StatusActive'

                * 'StatusPrepared'

                * 'StatusUnknown'

                * 'StatusNoTransaction'

                * 'StatusPreparing'

       get_status(Coordinator) -> Status

              Types:

                 Coordinator = #objref
                 Status = atom()

              Returns the status of the transaction associated with the target object.

       get_top_level_status(Coordinator) -> Status

              Types:

                 Coordinator = #objref
                 Status = atom()

              Returns the status of the top-level transaction associated with the target object.

       hash_top_level_tran(Coordinator) -> Return

              Types:

                 Coordinator = #objref
                 Return = integer()

              Returns  a  hash  code  for  the  top-level  transaction associated with the target
              object. Equals the operation hash_transaction/1 if the target object is a top-level
              transaction.

       hash_transaction(Coordinator) -> Return

              Types:

                 Coordinator = #objref
                 Return = integer()

              Returns a hash code for the transaction associated with the target object.

       is_descendant_transaction(Coordinator, OtherCoordinator) -> Return

              Types:

                 Coordinator = #objref
                 OtherCoordinator = #objref
                 Return = Boolean

              Returns  true  if the transaction associated with the target object is a descendant
              of the transaction associated with the parameter object.

       is_same_transaction(Coordinator, OtherCoordinator) -> Return

              Types:

                 Coordinator = #objref
                 OtherCoordinator = #objref
                 Return = Boolean

              Returns true if the transaction associated with the target object is related to the
              transaction associated with the parameter object.

       is_top_level_transaction(Coordinator) -> Return

              Types:

                 Coordinator = #objref
                 Return = Boolean

              Returns  true  if  the transaction associated with the target object is a top-level
              transaction.

       register_resource(Coordinator, Resource) -> RecoveryCoordinator

              Types:

                 Coordinator = #objref
                 Resource = #objref
                 RecoveryCoordinator = #objref

              This operation registers the parameter Resource object  as  a  participant  in  the
              transaction  associated with the target object. The RecoveryCoordinator returned by
              this operation can be used by this Resource during recovery.

          Note:
              The Resources will be called in FIFO-order when preparing or committing. Hence,  be
              sure to register the Resources in the correct order.

              Raises exception:

                * 'Inactive' - if target transaction has already been prepared.

       register_subtran_aware(Coordinator, SubtransactionAwareResource) -> Return

              Types:

                 Coordinator = #objref
                 Return = ok

              This operation registers the parameter SubtransactionAwareResource object such that
              it will be notified when the transaction, associated wit  the  target  object,  has
              committed or rolled back.

          Note:
              The  Resources  will  be  called  in  FIFO-order.  Hence,  be  sure to register the
              Resources in the correct order.

       rollback_only(Coordinator) -> Return

              Types:

                 Coordinator = #objref
                 Return = ok

              The transaction associated with the target object is modified so the only  possible
              outcome is to rollback the transaction.