| /* |
| * Copyright (c) 2011, 2021 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Oracle - initial API and implementation |
| // |
| package org.eclipse.persistence.jpa.jpql.tools.model; |
| |
| import org.eclipse.persistence.jpa.jpql.tools.model.query.StateObject; |
| |
| /** |
| * The default implementation of {@link IPropertyChangeEvent} where the generics is the type of the |
| * old and new values. |
| * |
| * @version 2.4 |
| * @since 2.4 |
| * @author Pascal Filion |
| */ |
| public class PropertyChangeEvent<T> implements IPropertyChangeEvent<T> { |
| |
| /** |
| * The new value of the property that changed. |
| */ |
| private T newValue; |
| |
| /** |
| * The old value of the property that changed. |
| */ |
| private T oldValue; |
| |
| /** |
| * The name of the property associated with the property change. |
| */ |
| private String propertyName; |
| |
| /** |
| * The source where the modification occurred and that fired the event. |
| */ |
| private StateObject source; |
| |
| /** |
| * Creates a new <code>PropertyChangeEvent</code>. |
| * |
| * @param source The source where the modification occurred and that fired the event |
| * @param propertyName The name of the property associated with the property change |
| * @param oldValue The old value of the property that changed |
| * @param newValue The new value of the property that changed |
| */ |
| public PropertyChangeEvent(StateObject source, String propertyName, T oldValue, T newValue) { |
| super(); |
| this.source = source; |
| this.propertyName = propertyName; |
| this.oldValue = oldValue; |
| this.newValue = newValue; |
| } |
| |
| @Override |
| public T getNewValue() { |
| return newValue; |
| } |
| |
| @Override |
| public T getOldValue() { |
| return oldValue; |
| } |
| |
| @Override |
| public String getPropertyName() { |
| return propertyName; |
| } |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public <S extends StateObject> S getSource() { |
| return (S) source; |
| } |
| } |