Using Wildcards
To register or cancel a subscription for multiple event types, you can use a single wildcard character, *, at the end of the event type name. To subscribe to all the event types within the scope of Sample, you could use the following event type name:
Sample::*
If you use wildcards in the event type name, the following restrictions apply:
Only those event types that your client has permission to subscribe to will be included in the subscription.
Wildcards cannot be used with any event type within the scope of
Broker::Trace or
Broker::Activity.
If a filter string is specified for the subscription, it might not contain any data fields. The filter string might contain envelope fields, however.