org.sandev.basics.nodecommon
Interface ControlWrapper

All Known Implementing Classes:

AuthorizerNodeCtrl, CacheManagerNodeCtrl, DataManagerNodeCtrl, MessageDriverNodeCtrl

public interface ControlWrapper

The ControlWrapper interface declares that the implementing class wraps a node for control purposes. Each node implements Controllable, which is how state transitions and parameter updates are managed internally. External control is accomplished by wrapping this internal mechanism inside of another class that handles the mapping to/from the external control technology.

A ControlWrapper calls through to the appropriate method(s) in the Controllable node. The node maintains a collection of wrappers and notifies all of them in the event of a state or parameter change. With bidirectional access, the system can (and does) support multiple simultaneous control interfaces.

Method Summary

Controllable	getControllable() Return the Controllable instance we are wrapping.
void	paramChanged(java.lang.String paramName) Accept the fact that one of the parameters has changed.
void	sandInitialize() Called once after construction and setControllable to signal that the instance should ready itself for work.
void	setControllable(Controllable node) Set the Controllable instance we are wrapping.
void	stateChanged(int prevState, int currState) Accept the fact that the state has changed.

Method Detail

stateChanged

public void stateChanged(int prevState,
                         int currState)

Accept the fact that the state has changed.

paramChanged

public void paramChanged(java.lang.String paramName)

Accept the fact that one of the parameters has changed.

setControllable

public void setControllable(Controllable node)

Set the Controllable instance we are wrapping.

getControllable

public Controllable getControllable()

Return the Controllable instance we are wrapping.

sandInitialize

public void sandInitialize()
                    throws ControlWrapperException

Called once after construction and setControllable to signal that the instance should ready itself for work.

Throws:

ControlWrapperException