| /******************************************************************************* |
| * Copyright (c) 2007, 2010 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.core.internal; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.jpt.core.JpaDataSource; |
| import org.eclipse.jpt.core.JpaFactory; |
| import org.eclipse.jpt.core.JpaFile; |
| import org.eclipse.jpt.core.JpaNode; |
| import org.eclipse.jpt.core.JpaPlatform; |
| import org.eclipse.jpt.core.JpaProject; |
| import org.eclipse.jpt.core.JpaPlatformVariation; |
| import org.eclipse.jpt.core.JptCorePlugin; |
| import org.eclipse.jpt.db.Catalog; |
| import org.eclipse.jpt.db.Database; |
| import org.eclipse.jpt.utility.internal.model.AbstractModel; |
| import org.eclipse.jpt.utility.internal.model.CallbackChangeSupport; |
| import org.eclipse.jpt.utility.internal.model.ChangeSupport; |
| |
| /** |
| * Some common Dali behavior:<ul> |
| * <li>containment hierarchy |
| * <li>Eclipse adaptable |
| * <li>update triggers |
| * </ul> |
| */ |
| public abstract class AbstractJpaNode |
| extends AbstractModel |
| implements JpaNode |
| { |
| private final JpaNode parent; |
| |
| |
| // ********** constructor/initialization ********** |
| |
| protected AbstractJpaNode(JpaNode parent) { |
| super(); |
| this.checkParent(parent); |
| this.parent = parent; |
| } |
| |
| protected void checkParent(JpaNode p) { |
| if (p == null) { |
| if (this.requiresParent()) { |
| throw new IllegalArgumentException("'parent' cannot be null"); //$NON-NLS-1$ |
| } |
| } else { |
| if (this.forbidsParent()) { |
| throw new IllegalArgumentException("'parent' must be null"); //$NON-NLS-1$ |
| } |
| } |
| } |
| |
| protected boolean requiresParent() { |
| return true; |
| } |
| |
| protected boolean forbidsParent() { |
| return ! this.requiresParent(); // assume 'parent' is not optional |
| } |
| |
| @Override |
| protected ChangeSupport buildChangeSupport() { |
| return new CallbackChangeSupport(this, this.buildChangeSupportListener()); |
| } |
| |
| protected CallbackChangeSupport.Listener buildChangeSupportListener() { |
| return new CallbackChangeSupport.Listener() { |
| public void aspectChanged(String aspectName) { |
| AbstractJpaNode.this.aspectChanged(aspectName); |
| } |
| }; |
| } |
| |
| |
| // ********** IAdaptable implementation ********** |
| |
| @SuppressWarnings("unchecked") |
| public Object getAdapter(Class adapter) { |
| return Platform.getAdapterManager().getAdapter(this, adapter); |
| } |
| |
| |
| // ********** JpaNode implementation ********** |
| |
| public JpaNode getParent() { |
| return this.parent; |
| } |
| |
| public IResource getResource() { |
| return this.parent.getResource(); |
| } |
| |
| public JpaProject getJpaProject() { |
| return this.parent.getJpaProject(); |
| } |
| |
| |
| // ********** convenience methods ********** |
| |
| protected JpaPlatform getJpaPlatform() { |
| return this.getJpaProject().getJpaPlatform(); |
| } |
| |
| protected JpaPlatform.Version getJpaPlatformVersion() { |
| return this.getJpaPlatform().getJpaVersion(); |
| } |
| |
| protected boolean isJpa2_0Compatible() { |
| return JptCorePlugin.nodeIsJpa2_0Compatible(this); |
| } |
| |
| protected JpaFactory getJpaFactory() { |
| return this.getJpaPlatform().getJpaFactory(); |
| } |
| |
| protected JpaPlatformVariation getJpaPlatformVariation() { |
| return this.getJpaPlatform().getJpaVariation(); |
| } |
| |
| protected JpaFile getJpaFile(IFile file) { |
| return this.getJpaProject().getJpaFile(file); |
| } |
| |
| protected JpaDataSource getDataSource() { |
| return this.getJpaProject().getDataSource(); |
| } |
| |
| protected Database getDatabase() { |
| return this.getDataSource().getDatabase(); |
| } |
| |
| protected boolean connectionProfileIsActive() { |
| return this.getDataSource().connectionProfileIsActive(); |
| } |
| |
| /** |
| * Pre-condition: specified catalog <em>identifier</em> is not null. |
| * NB: Do not use the catalog <em>name</em>. |
| */ |
| protected Catalog getDbCatalog(String catalog) { |
| Database database = this.getDatabase(); |
| return (database == null) ? null : database.getCatalogForIdentifier(catalog); |
| } |
| |
| |
| // ********** CallbackChangeSupport.Listener support ********** |
| |
| protected void aspectChanged(String aspectName) { |
| if (this.aspectTriggersUpdate(aspectName)) { |
| // String msg = Thread.currentThread() + " aspect change: " + this + ": " + aspectName; |
| // System.out.println(msg); |
| // new Exception(msg).printStackTrace(System.out); |
| this.getJpaProject().update(); |
| } |
| } |
| |
| private boolean aspectTriggersUpdate(String aspectName) { |
| return ! this.aspectDoesNotTriggerUpdate(aspectName); |
| } |
| |
| private boolean aspectDoesNotTriggerUpdate(String aspectName) { |
| return this.nonUpdateAspectNames().contains(aspectName); |
| } |
| |
| protected final Set<String> nonUpdateAspectNames() { |
| synchronized (nonUpdateAspectNameSets) { |
| HashSet<String> nonUpdateAspectNames = nonUpdateAspectNameSets.get(this.getClass()); |
| if (nonUpdateAspectNames == null) { |
| nonUpdateAspectNames = new HashSet<String>(); |
| this.addNonUpdateAspectNamesTo(nonUpdateAspectNames); |
| nonUpdateAspectNameSets.put(this.getClass(), nonUpdateAspectNames); |
| } |
| return nonUpdateAspectNames; |
| } |
| } |
| |
| private static final HashMap<Class<? extends AbstractJpaNode>, HashSet<String>> nonUpdateAspectNameSets = new HashMap<Class<? extends AbstractJpaNode>, HashSet<String>>(); |
| |
| protected void addNonUpdateAspectNamesTo(@SuppressWarnings("unused") Set<String> nonUpdateAspectNames) { |
| // when you override this method, don't forget to include: |
| // super.addNonUpdateAspectNamesTo(nonUpdateAspectNames); |
| } |
| |
| } |