#7 There is no superclass of ParallelTaskGroup/SequentialTaskGroup that works with TaskExecutor.execute()

[Gregory Graham]

Context:

ParallelTaskGroup<ravenwoodassociatedtablecount> taskGroup;
taskGroup = new ParallelTaskGroup<ravenwoodassociatedtablecount>();
// ...
associatedTableCounts = TaskExecutor.execute(taskGroup);</ravenwoodassociatedtablecount></ravenwoodassociatedtablecount>

I would like to easily switch from ParallelTaskGroup to SequentialTaskGroup however neither TaskGroup nor AbstractTaskGroup implement the Callable interface and execute() will not accept them.

I suggest AbstractTaskGroup should extend Callable, or a new abstract superclass of ParallelTaskGroup and SequentialTaskGroup should be added that implements Callable. Another suggestion is to make ParallelTaskGroup a subclass of SequentialTaskGroup but that may be confusing.