package data.events; import java.util.*; import data.*; /** * <i>Abstract</i> super class of all events indicating changes in a Stock's contents. * * <p>The concrete implementations depend on the concrete implementations of the Stock interface.</p> * * @author Steffen Zschaler * @version 2.0 19/08/1999 * @since v2.0 */ public abstract class StockChangeEvent extends EventObject { /** * The DataBasket that was used to perform the operation. * * @serial */ private DataBasket m_dbBasket; /** * Create a new StockChangeEvent. * * @param lstSource the Stock that triggers the event. * @param dbBasket the basket used for the operation. */ public StockChangeEvent (ListenableStock lstSource, DataBasket dbBasket) { super (lstSource); m_dbBasket = dbBasket; } /** * Get the name of the items that are affected by the event. * * @override Always */ public abstract String getAffectedKey(); /** * Count the items affected by this event. * * @override Always */ public abstract int countAffectedItems(); /** * Get the items that are affected by the event. * * @override Always */ public abstract Iterator getAffectedItems(); /** * Get the DataBasket used for the operation. * * @override Never */ public DataBasket getBasket() { return m_dbBasket; } }