| /******************************************************************************* |
| * Copyright (c) 2008, 2009 Oracle. All rights reserved. |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v1.0, which accompanies this distribution |
| * and is available at http://www.eclipse.org/legal/epl-v10.html. |
| * |
| * Contributors: |
| * Oracle - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jpt.eclipselink.core.internal.context.persistence; |
| |
| import java.util.Iterator; |
| |
| import org.eclipse.jpt.core.context.persistence.PersistenceUnit; |
| import org.eclipse.jpt.utility.model.Model; |
| import org.eclipse.jpt.utility.model.event.ListChangeEvent; |
| import org.eclipse.jpt.utility.model.event.PropertyChangeEvent; |
| import org.eclipse.jpt.utility.model.listener.ListChangeListener; |
| |
| /** |
| * PersistenceUnitPropertyListListener Notifies the given parent when a change |
| * occured in JPT PersistenceUnit properties |
| */ |
| public class PersistenceUnitPropertyListListener implements ListChangeListener |
| { |
| private PersistenceUnitProperties parent; |
| |
| // ********** constructors / initialization ********** |
| public PersistenceUnitPropertyListListener(PersistenceUnitProperties parent) { |
| this.parent = parent; |
| } |
| |
| // ********** Behavior ********** |
| protected boolean add(PersistenceUnit.Property newItem, Model source) { |
| if (this.model().itemIsProperty(newItem)) { |
| String propertyName = this.model().propertyIdFor(newItem); |
| this.model().propertyChanged( |
| new PropertyChangeEvent(source, propertyName, null, newItem)); |
| return true; |
| } |
| return false; |
| } |
| |
| protected boolean remove(PersistenceUnit.Property item, Model source) { |
| if (this.model().itemIsProperty(item)) { |
| String propertyName = this.model().propertyIdFor(item); |
| this.model().propertyChanged( |
| new PropertyChangeEvent(source, propertyName, item, null)); // oldItem is the removed property |
| return true; |
| } |
| return false; |
| } |
| |
| // replace |
| protected PersistenceUnit.Property set(PersistenceUnit.Property newItem, Model source) { |
| if (this.model().itemIsProperty(newItem)) { |
| String propertyName = this.model().propertyIdFor(newItem); |
| this.model().propertyChanged( |
| new PropertyChangeEvent(source, propertyName, null, newItem)); // oldItem unknown |
| return newItem; |
| } |
| return null; |
| } |
| |
| // ********** ListChangeListener implementation ********** |
| public void itemsAdded(ListChangeEvent e) { |
| for (Iterator<PersistenceUnit.Property> stream = this.items(e); stream.hasNext();) { |
| this.add(stream.next(), e.getSource()); |
| } |
| } |
| |
| public void itemsRemoved(ListChangeEvent e) { |
| for (Iterator<PersistenceUnit.Property> stream = this.items(e); stream.hasNext();) { |
| this.remove(stream.next(), e.getSource()); |
| } |
| } |
| |
| public void itemsReplaced(ListChangeEvent e) { |
| // ItemAspectListValueModelAdapter(270) does not provide old value |
| for (Iterator<PersistenceUnit.Property> newStream = this.items(e); newStream.hasNext();) { |
| this.set(newStream.next(), e.getSource()); |
| } |
| } |
| |
| public void itemsMoved(ListChangeEvent e) { |
| throw new UnsupportedOperationException("source: " + e.getSource() + " - aspect: " + e.getAspectName()); |
| } |
| |
| public void listCleared(ListChangeEvent e) { |
| throw new UnsupportedOperationException("source: " + e.getSource() + " - aspect: " + e.getAspectName()); |
| } |
| |
| public void listChanged(ListChangeEvent e) { |
| throw new UnsupportedOperationException("source: " + e.getSource() + " - aspect: " + e.getAspectName()); |
| } |
| |
| // ********** standard methods ********** |
| @Override |
| public String toString() { |
| return this.getClass().getSimpleName() + "( " + this.model().getClass().getSimpleName() + ")"; |
| } |
| |
| // ********** internal methods ********** |
| private PersistenceUnitProperties model() { |
| return this.parent; |
| } |
| |
| @SuppressWarnings("unchecked") |
| private Iterator<PersistenceUnit.Property> items(ListChangeEvent event) { |
| return (Iterator<PersistenceUnit.Property>) event.items(); |
| } |
| } |