alma.ACS.jbaci

Class DataAccessSupport

java.lang.Object

alma.ACS.jbaci.DataAccessSupport

All Implemented Interfaces:

DataAccess

Direct Known Subclasses:

MemoryDataAccess

public abstract class DataAccessSupport
extends java.lang.Object
implements DataAccess

Convenience implementation of DataAccess - implementing listener (de)registration.

Author:

Matej Sekoranja

Nested Class Summary

Nested classes/interfaces inherited from interface alma.ACS.jbaci.DataAccess

DataAccess.OnChangeNotSupportedException, DataAccess.ValueChangeListener

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.ArrayList<DataAccess.ValueChangeListener>	listeners List of registered listeners.

Constructor Summary

Constructors

Constructor and Description
DataAccessSupport()

Method Summary

Modifier and Type	Method and Description
void	addValueChangeListener(DataAccess.ValueChangeListener listener) Add value change listener.
protected void	notify(java.lang.Object oldValue, java.lang.Object newValue) Notifies about value change - internal method.
void	removeValueChangeListener(DataAccess.ValueChangeListener listener) Remove value change listener.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface alma.ACS.jbaci.DataAccess

get, initializeValue, set

Field Detail

listeners

protected java.util.ArrayList<DataAccess.ValueChangeListener> listeners

List of registered listeners.

Constructor Detail

DataAccessSupport

public DataAccessSupport()

Method Detail

notify

protected void notify(java.lang.Object oldValue,
                      java.lang.Object newValue)

Notifies about value change - internal method.

Parameters:

oldValue - old value.

newValue - new value.

addValueChangeListener

public void addValueChangeListener(DataAccess.ValueChangeListener listener)
                            throws DataAccess.OnChangeNotSupportedException

Description copied from interface: DataAccess

Add value change listener.

Specified by:

addValueChangeListener in interface DataAccess

Parameters:

listener - listener to be notified on every value change.

Throws:

DataAccess.OnChangeNotSupportedException

See Also:

DataAccess.addValueChangeListener(alma.ACS.jbaci.DataAccess.ValueChangeListener)

removeValueChangeListener

public void removeValueChangeListener(DataAccess.ValueChangeListener listener)

Description copied from interface: DataAccess

Remove value change listener.

Specified by:

removeValueChangeListener in interface DataAccess

Parameters:

listener - listener to be removed.

See Also:

DataAccess.removeValueChangeListener(alma.ACS.jbaci.DataAccess.ValueChangeListener)