com.tomgibara.pronto.state
Interface StateTransition<S,L>

Type Parameters:

S - the type of states the transition is between

L - the type of label this transition carries.

All Known Implementing Classes:

StateTransitionImpl

public interface StateTransition<S,L>

State transitions are aggregated into graphs by StateGraph objects. Note that the states and labels for transitions are never permitted to be null. If labels are not required, a singleton class instance can be used (ie. a simplified null object pattern) to provide the same label for all transitions in a graph.

Author:

Tom Gibara

Method Summary

L	getLabel() The label with which the transition is decorated.
S	getSource() The state away from which the transition is directed.
S	getTarget() The state towards which the transition is directed.

Method Detail

getSource

S getSource()

The state away from which the transition is directed.

Returns:

the source of the transition, never null

getLabel

L getLabel()

The label with which the transition is decorated.

Returns:

the label of the transition, never null

getTarget

S getTarget()

The state towards which the transition is directed.

Returns:

the target of the transition, never null