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/*******************************************************************************
* Copyright (c) 2007, 2012 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.jpa.ui.internal.actions;
import java.lang.reflect.InvocationTargetException;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.IWorkspaceRunnable;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.SubMonitor;
import org.eclipse.core.runtime.jobs.ISchedulingRule;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.ProgressMonitorDialog;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jpt.common.core.resource.xml.JptXmlResource;
import org.eclipse.jpt.common.ui.internal.utility.SynchronousUiCommandExecutor;
import org.eclipse.jpt.common.utility.command.Command;
import org.eclipse.jpt.common.utility.internal.ObjectTools;
import org.eclipse.jpt.jpa.core.JpaProject;
import org.eclipse.jpt.jpa.core.JpaProjectManager;
import org.eclipse.jpt.jpa.core.context.persistence.Persistence;
import org.eclipse.jpt.jpa.core.context.persistence.PersistenceUnit;
import org.eclipse.jpt.jpa.core.context.persistence.PersistenceXml;
import org.eclipse.jpt.jpa.ui.internal.JptUiMessages;
import org.eclipse.jpt.jpa.ui.internal.plugin.JptJpaUiPlugin;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;
/**
* This action is contributed for:<ul>
* <li>any {@link IFile} named <code>"persistence.xml"</code>
* <li>any instance of {@link PersistenceXml}
* </ul>
*/
public class SynchronizeClassesAction
implements IObjectActionDelegate
{
private IFile persistenceXmlFile;
public void setActivePart(IAction action, IWorkbenchPart targetPart) {
// no-op for now
}
/**
* Determine whether we can calculate the <code>persistence.xml</code> file
* from the current selection and save it for use in {@link #run(IAction)}.
*/
public void selectionChanged(IAction action, ISelection selection) {
// There is always only one element in the actual selection.
Object sel = ((StructuredSelection) selection).getFirstElement();
this.persistenceXmlFile = this.buildPersistenceXmlFile(sel);
}
private IFile buildPersistenceXmlFile(Object selection) {
if (selection instanceof IFile) {
return (IFile) selection;
}
if (selection instanceof PersistenceXml) {
return (IFile) ((PersistenceXml) selection).getResource();
}
return null;
}
public void run(IAction action) {
try {
IRunnableWithProgress runnable = new SyncRunnable(this.persistenceXmlFile);
this.buildProgressMonitorDialog().run(true, true, runnable); // true => fork; true => cancellable
} catch (InvocationTargetException ex) {
JptJpaUiPlugin.instance().logError(ex);
} catch (InterruptedException ex) {
Thread.currentThread().interrupt();
JptJpaUiPlugin.instance().logError(ex);
}
}
private ProgressMonitorDialog buildProgressMonitorDialog() {
return new ProgressMonitorDialog(null);
}
// ********** sync runnable **********
/**
* This is dispatched to the progress monitor dialog.
*/
/* CU private */ static class SyncRunnable
implements IRunnableWithProgress
{
private IFile persistenceXmlFile;
SyncRunnable(IFile persistenceXmlFile) {
super();
this.persistenceXmlFile = persistenceXmlFile;
}
public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
try {
this.run_(monitor);
} catch (CoreException ex) {
throw new InvocationTargetException(ex);
}
}
private void run_(IProgressMonitor monitor) throws CoreException {
IWorkspace workspace = ResourcesPlugin.getWorkspace();
// lock the entire project, since we might modify the metamodel classes
ISchedulingRule rule = workspace.getRuleFactory().modifyRule(this.persistenceXmlFile.getProject());
workspace.run(
new SyncWorkspaceRunnable(this.persistenceXmlFile),
rule,
IWorkspace.AVOID_UPDATE,
monitor
);
}
}
// ********** sync workspace runnable **********
/**
* This is dispatched to the Eclipse workspace.
*/
/* CU private */ static class SyncWorkspaceRunnable
implements IWorkspaceRunnable
{
private IFile persistenceXmlFile;
SyncWorkspaceRunnable(IFile persistenceXmlFile) {
super();
this.persistenceXmlFile = persistenceXmlFile;
}
public void run(IProgressMonitor monitor) throws CoreException {
if (monitor.isCanceled()) {
return;
}
SubMonitor sm = SubMonitor.convert(monitor, JptUiMessages.SynchronizingClasses_TaskName, 20);
JpaProject jpaProject = this.getJpaProject();
if (jpaProject == null) {
return;
}
JptXmlResource resource = jpaProject.getPersistenceXmlResource();
if (resource == null) {
// the resource can be null if the persistence.xml file has an invalid content type
return;
}
if (sm.isCanceled()) {
return;
}
sm.worked(1);
PersistenceXml persistenceXml = jpaProject.getRootContextNode().getPersistenceXml();
if (persistenceXml == null) {
return; // unlikely...
}
Persistence persistence = persistenceXml.getRoot();
if (persistence == null) {
return; // unlikely...
}
PersistenceUnit persistenceUnit = (persistence.getPersistenceUnitsSize() == 0) ?
persistence.addPersistenceUnit() :
persistence.getPersistenceUnit(0);
if (sm.isCanceled()) {
return;
}
sm.worked(1);
Command syncCommand = new SyncCommand(persistenceUnit, sm.newChild(17));
try {
this.getJpaProjectManager().execute(syncCommand, SynchronousUiCommandExecutor.instance());
} catch (InterruptedException ex) {
Thread.currentThread().interrupt(); // skip save?
throw new RuntimeException(ex);
}
resource.save();
sm.worked(1);
}
private JpaProjectManager getJpaProjectManager() {
return (JpaProjectManager) this.getWorkspace().getAdapter(JpaProjectManager.class);
}
private IProject getProject() {
return this.persistenceXmlFile.getProject();
}
private JpaProject getJpaProject() {
return (JpaProject) this.getProject().getAdapter(JpaProject.class);
}
private IWorkspace getWorkspace() {
return this.persistenceXmlFile.getWorkspace();
}
}
// ********** sync command **********
/**
* This is dispatched to the JPA project manager.
*/
/* CU private */ static class SyncCommand
implements Command
{
private final PersistenceUnit persistenceUnit;
private final IProgressMonitor monitor;
SyncCommand(PersistenceUnit persistenceUnit, IProgressMonitor monitor) {
super();
this.persistenceUnit = persistenceUnit;
this.monitor = monitor;
}
public void execute() {
this.persistenceUnit.synchronizeClasses(this.monitor);
}
@Override
public String toString() {
return ObjectTools.toString(this, this.persistenceUnit);
}
}
}
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