class HTask: public TNamed

_HADES_CLASS_DESCRIPTION

HTask

 This is the base class for a task (i.e. a transform data, take a decision
depending on some parameters ...). Examples of tasks are the HReconstructor
class which stands for a algorithm used to process event's data; the
HTaskSet class which corresponds to a set of generic tasks.

 The task is expected to be initialized using the init() function before the
first call to the next() function. This last method (next()) performs the
actual task and retrieves a pointer to the next task to be executed (or
NULL if there is no next task).

 The finalize() method does some clean-up and in general will be called in
the destructor. However it is provided as a separate function allowing the
posibility to reset the task (two consecutive calls to finalize() and init())
without destructing the object.

 The connectTask(aTask,n) function connects the task "aTask" as the next task
to be performed. "n" is an optional integer and its meaning can be defined
by each subclass.