awIsEventFieldSet

awIsEventFieldSet

BrokerError awIsEventFieldSet(
BrokerEvent event,
char *field_name,
BrokerBoolean *is_set);

event	The event whose field is to be checked.
field_name	The field name to check.
is_set	Set to 1 (true) if the field is set; otherwise, set to 0 (false) . This parameter is used for output.

Determines if the specified field was explicitly set to its current value. The field_name can directly identify any field in an event, no matter how deeply the fields are nested. See Specifying Field Names for complete information on specifying field_name.

See Sequence Data Fields and awGetFieldNames for more information.

Possible BrokerError major codes	Meaning
AW_ERROR_FIELD_NOT_FOUND	The event is associated with a Broker client and field_name does not exist in the event.
AW_ERROR_FIELD_TYPE_MISMATCH	The field_name incorrectly accesses a type.
AW_ERROR_INVALID_EVENT	The event is invalid.
AW_ERROR_INVALID_FIELD_NAME	The field_name is invalid.
AW_ERROR_NULL_PARAM	The parameter field_name or is_set is NULL.