| /* |
| * Copyright (c) 2011, 2020 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; |
| |
| /** |
| * This is used in conjunction with {@link IPropertyChangeListener}. It contains the information |
| * regarding the property change. |
| * |
| * @version 2.4 |
| * @since 2.4 |
| * @author Pascal Filion |
| */ |
| public interface IPropertyChangeEvent<T> { |
| |
| /** |
| * Returns the new value of the property that changed. |
| * |
| * @return The property's new value |
| */ |
| T getNewValue(); |
| |
| /** |
| * Returns the old value of the property that changed. |
| * |
| * @return The property's old value |
| */ |
| T getOldValue(); |
| |
| /** |
| * Returns the name of the property that changed. |
| * |
| * @return A unique identifier of the property that changed |
| */ |
| String getPropertyName(); |
| |
| /** |
| * Returns the source where the modification occurred and that fired the event. |
| * |
| * @return The source of the event |
| */ |
| <S extends StateObject> S getSource(); |
| } |