org.omg.CosTransactions
Class _ResourceStub

java.lang.Object
  org.omg.CORBA.portable.ObjectImpl
      org.omg.CosTransactions._ResourceStub

All Implemented Interfaces:

IDLEntity, Object, Resource, ResourceOperations, Serializable

public class _ResourceStub

extends ObjectImpl

implements Resource

Stub for Resource

See Also:

Serialized Form

Constructor Summary

_ResourceStub()

Method Summary

String[]	_ids() Retrieves a string array containing the repository identifiers supported by this ObjectImpl object.
void	commit_one_phase() If possible, the resource should commit all changes made as part of the transaction.
void	commit() This operation is invoked to complete the two-phase commit.
void	forget() This operation is performed only if the resource raised a heuristic outcome exception to rollback, commit, commit_one_phase, or prepare.
Vote	prepare() This operation is invoked to begin the two-phase commit protocol on the resource.
void	rollback() This operation is can be invoked to complete the two-phase commit.

Methods inherited from class org.omg.CORBA.portable.ObjectImpl

_create_request, _create_request, _duplicate, _get_delegate, _get_domain_managers, _get_interface_def, _get_policy, _hash, _invoke, _is_a, _is_equivalent, _is_local, _non_existent, _orb, _release, _releaseReply, _request, _request, _servant_postinvoke, _servant_preinvoke, _set_delegate, _set_policy_override, equals, hashCode, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.omg.CORBA.Object

_create_request, _create_request, _duplicate, _get_domain_managers, _get_interface_def, _get_policy, _hash, _is_a, _is_equivalent, _non_existent, _release, _request, _set_policy_override

Constructor Detail

_ResourceStub

public _ResourceStub()

Method Detail

prepare

public Vote prepare()
             throws HeuristicMixed,
                    HeuristicHazard

Description copied from interface: ResourceOperations

This operation is invoked to begin the two-phase commit protocol on the resource. The resource can respond in several ways, represented by the Vote result.

If no persistent data associated with the resource has been modified by the transaction, the resource can return VoteReadOnly. After receiving this response, the Transaction Service is not required to perform any additional operations on this resource. Furthermore, the resource can forget all knowledge of the transaction.

If the resource is able to write (or has already written) all the data needed to commit the transaction to stable storage, as well as an indication that it has prepared the transaction, it can return VoteCommit. After receiving this response, the Transaction Service is required to eventually perform either the commit or the rollback operation on this object.

The resource can return VoteRollback under any circumstances, including not having any knowledge about the transaction (which might happen after a crash). If this response is returned, the transaction must be rolled back.

Specified by:

prepare in interface ResourceOperations

Throws:

HeuristicMixed

HeuristicHazard

rollback

public void rollback()
              throws HeuristicCommit,
                     HeuristicMixed,
                     HeuristicHazard

Description copied from interface: ResourceOperations

This operation is can be invoked to complete the two-phase commit. If necessary, the resource should rollback all changes made as part of the transaction.

Specified by:

rollback in interface ResourceOperations

Throws:

HeuristicCommit

HeuristicMixed

HeuristicHazard

commit

public void commit()
            throws NotPrepared,
                   HeuristicRollback,
                   HeuristicMixed,
                   HeuristicHazard

Description copied from interface: ResourceOperations

This operation is invoked to complete the two-phase commit. If necessary, the resource should commit all changes made as part of the transaction.

The NotPrepared exception is raised if the commit operation is performed without first performing the prepare operation.

Specified by:

commit in interface ResourceOperations

Throws:

NotPrepared

HeuristicRollback

HeuristicMixed

HeuristicHazard

commit_one_phase

public void commit_one_phase()
                      throws HeuristicHazard

Description copied from interface: ResourceOperations

If possible, the resource should commit all changes made as part of the transaction.

Specified by:

commit_one_phase in interface ResourceOperations

Throws:

HeuristicHazard

forget

public void forget()

Description copied from interface: ResourceOperations

This operation is performed only if the resource raised a heuristic outcome exception to rollback, commit, commit_one_phase, or prepare. Once the coordinator has determined that the heuristic situation has been addressed, it should issue forget on the resource. The resource can forget all knowledge of the transaction.

Specified by:

forget in interface ResourceOperations

_ids

public String[] _ids()

Description copied from class: ObjectImpl

Retrieves a string array containing the repository identifiers supported by this ObjectImpl object. For example, for a stub, this method returns information about all the interfaces supported by the stub.

Specified by:

_ids in class ObjectImpl

Returns:

the array of all repository identifiers supported by this ObjectImpl instance