OptionalaskOptionalbeforeActor that must be registered in the bus before this actor.
The bus this actor subscribes to.
OptionalbusThe message that will be configured in the bus for reporting failures.
This message may be a template string that contains references to the executed action.
For example, the following templated string is allowed:
"RDF dereferencing failed: no actors could handle ${action.handle.mediaType}"
The name for this actor.
If true, ASK queries will be sent to the source instead of COUNT queries to check emptiness for patterns. This will only be done for sources that accept ASK queries.
Timeout in milliseconds for ASK queries, after which the source is assumed to have results. Failing ASK queries also lead to the source being assumed to have results. A value of 0 or less disables the timeout.