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CCOW Error Handling

The CCOW Context Management Architecture defines a set of exceptions that components can raise. There is no provision in the current standard for context participant applications to throw exceptions.

All automation and dual interface methods in ActiveX implementation return 32-bit encoded HRESULT error values. In addition, the Microsoft-defined IErrorInfo and ISupportErrorInfo interfaces can provide additional error information including a textual description of the error and the GUID of the interface that threw the error.

The of CCOW Context Management Architecture defined HRESULTS values are listed in the table below:

Exception	Hexadecimal Value	Explanation
NotImplemented	0x80004001L	Method not implemented. This is the same value as defined for the Win32 E_NOT_IMPL HRESULT.
GeneralFailure	0x80004005L	An error was detected or a failure occurred. This is the same value as defined for the Win32 E_FAIL HRESULT.
ChangesNotEnded	0x80000201L	Attempt to publish context changes before ending the context change transaction.
InvalidContextCoupon	0x80000203L	A context coupon does not match most recently committed coupon or current transaction coupon.
GeneralFailure	0x80000204L	A context coupon does not match most recently committed coupon or current transaction coupon.
reserved	0x80000205L
NameValueCountMismatch	0x80000206L	A name array and its corresponding value array do not have the same number of elements.
NotInTransaction	0x80000207L	Attempt to perform a context management transaction method when a transaction is not in progress.
TransactionInProgress	0x80000209L	Attempt to perform a context management method when a transaction is in progress.
UnknownItemName	0x8000020AL	An item name not known.
UnknownParticipant	0x8000020BL	Participant coupon does not denote a known participant.
TooManyParticipants	0x8000020CL	Attempt to join a context that can't accommodate another participant.
AcceptNotPossible	0x8000020DL	Attempt to publish an “accept” decision but there were participants for which it was not possible to obtain a survey response (e.g., these participants were blocked).
BadItemNameFormat	0x8000020EL	An item name does not conform to format rules.
BadItemType	0x8000020FL	An item data type does not conform to data definition for the item.
BadItemValue	0x80000210L	An item value does not conform to the allowed set of values as defined by the data definition for the item.
InvalidTransaction	0x80000211L	A transaction has been invalidated and aborted because it violates one or more semantic integrity constraints.
UndoNotPossible	0x80000212L	Attempt to undo context changes after the transaction has ended.
ChangesNotPossible	0x80000213L	Attempt to set or delete context data after the transaction has ended.
ChangesNotAllowed	0x80000214L	Mapping agent attempts set or delete a context data item that has been set by the participant that instigated the transaction.
AuthenticationFailed	0x80000215L	A signature could not be authenticated.
SignatureRequired	0x80000216L	A signature is required to perform the method.
UnknownApplication	0x80000217L	An application name is not known.
UnknownConnection	0x80000218L	A connection is not known to the authentication repository.
LogonNotFound	0x80000219L	The desired user logon is not found in the authentication repository.
UnknownDataFormat	0x8000021AL	The format of user authentication data requested could not be found in the authentication repository.
UnknownBindee	0x8000021BL	A security binding coupon does not denote a known bindee.
ImproperKeyFormat	0x8000021CL	A public key is not properly formatted.
BindingRejected	0x8000021DL	The identity of a bindee could not be verified.
ImproperMACFormat	0x8000021EL	A message authentication code is not properly formatted.
UnknownPropertyName	0x8000021FL	A property name is not known.
BadPropertyType	0x80000220L	A property data type does not conform to specification.
BadPropertyValue	0x80000221L	A property data value does not conform to specification.
AlreadyJoined	0x80000222L	The application has already joined the context.
ActionNotPossible	0x80000223L	There is presently a context change transaction in progress or another action is being performed.
ActionNotAllowed	0x80000224L	Application attempts to set items other than for the context action to be performed.
FilterNotSet	0x80000225L	Application attempts to get the names of subjects that are being filtered on its behalf, but a filter is has not yet been set by the application
ImproperSignatureFormat	0x80000226L	A digital signature code is not properly formatted.
ContextNotActive	0x80000227L	A context manager does not represent an active session.