This is the only required override.
This is the only required override.
Override this to change the default spout behavior if poll returns an empty list.
Override this to change the default spout behavior if poll returns an empty list.
Passes metrics to register with storm and a function to run on the storm runtime context when the spout is opened.
Passes metrics to register with storm and a function to run on the storm runtime context when the spout is opened.
Override to supply new tuples.
Override to supply new tuples.
Spout that performs a flatMap operation on its contained SchemeSpout. Used to implement map, filter and flatMap on SchemeSpout.