org.lsst.ccs

Interface StateChangeListener

public interface StateChangeListener

An internal listener to state changes. This interface is to be used by parties interested in being notified of a particular state change. StateChangeListeners are to be registered with an Agent by providing the list of states for which to be notified.

Author:

The LSST CCS Team

Method Summary

Modifier and Type	Method and Description
default void	stateChanged(org.lsst.ccs.utilities.taitime.CCSTimeStamp stateTransitionTimestamp, Object changedObj, Enum<?> newState, Enum<?> oldState) This method is called back when there is a state change
default void	stateChanged(Object changedObj, Enum<?> newState, Enum<?> oldState) Deprecated. Use stateChanged(CCSTimestamp, Object, Enum, Enum) instead.

Method Detail

stateChanged

@Deprecated
default void stateChanged(Object changedObj,
                                      Enum<?> newState,
                                      Enum<?> oldState)

Deprecated. Use stateChanged(CCSTimestamp, Object, Enum, Enum) instead.

This method is called back when there is a state change

Parameters:

changedObj - the object for which the state change happened. If no component object exists then we return the name of the component.

newState - The new state.

oldState - The old state.

stateChanged

default void stateChanged(org.lsst.ccs.utilities.taitime.CCSTimeStamp stateTransitionTimestamp,
                          Object changedObj,
                          Enum<?> newState,
                          Enum<?> oldState)

This method is called back when there is a state change

Parameters:

stateTransitionTimestamp - The CCSTimeStamp corresponding to this state transition

changedObj - the object for which the state change happened. If no component object exists then we return the name of the component.

newState - The new state.

oldState - The old state.