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/*******************************************************************************
* Copyright (c) 2000, 2009 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.examples.filesystem.subscriber;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.QualifiedName;
import org.eclipse.team.core.RepositoryProvider;
import org.eclipse.team.core.TeamException;
import org.eclipse.team.core.synchronize.SyncInfo;
import org.eclipse.team.core.variants.IResourceVariant;
import org.eclipse.team.core.variants.ThreeWayRemoteTree;
import org.eclipse.team.core.variants.ThreeWaySubscriber;
import org.eclipse.team.core.variants.ThreeWaySynchronizer;
import org.eclipse.team.examples.filesystem.FileSystemPlugin;
import org.eclipse.team.examples.filesystem.FileSystemProvider;
/**
* This is an example file system subscriber that overrides
* ThreeWaySubscriber. It uses a repository
* provider (<code>FileSystemProvider</code>) to determine and
* manage the roots and to create resource variants. It also makes
* use of a file system specific remote tree (<code>FileSystemRemoteTree</code>)
* for provided the remote tree access and refresh.
*
* @see ThreeWaySubscriber
* @see ThreeWaySynchronizer
* @see FileSystemProvider
* @see FileSystemRemoteTree
*/
public class FileSystemSubscriber extends ThreeWaySubscriber {
private static FileSystemSubscriber instance;
/**
* Return the file system subscriber singleton.
* @return the file system subscriber singleton.
*/
public static synchronized FileSystemSubscriber getInstance() {
if (instance == null) {
instance = new FileSystemSubscriber();
}
return instance;
}
/**
* Create the file system subscriber.
*/
private FileSystemSubscriber() {
super(new ThreeWaySynchronizer(new QualifiedName(FileSystemPlugin.ID, "workpsace-sync"))); //$NON-NLS-1$
}
@Override
public IResourceVariant getResourceVariant(IResource resource, byte[] bytes) {
RepositoryProvider provider = RepositoryProvider.getProvider(resource.getProject(), FileSystemPlugin.PROVIDER_ID);
if (provider != null) {
return ((FileSystemProvider)provider).getResourceVariant(resource, bytes);
}
return null;
}
@Override
protected ThreeWayRemoteTree createRemoteTree() {
return new FileSystemRemoteTree(this);
}
@Override
public String getName() {
return "File System Example"; //$NON-NLS-1$
}
@Override
public IResource[] roots() {
List<IProject> result = new ArrayList<>();
IProject[] projects = ResourcesPlugin.getWorkspace().getRoot().getProjects();
for (IProject project : projects) {
if(project.isAccessible()) {
RepositoryProvider provider = RepositoryProvider.getProvider(project, FileSystemPlugin.PROVIDER_ID);
if(provider != null) {
result.add(project);
}
}
}
return result.toArray(new IProject[result.size()]);
}
@Override
public void handleRootChanged(IResource resource, boolean added) {
// Override to allow FileSystemProvider to signal the addition and removal of roots
super.handleRootChanged(resource, added);
}
@Override
protected SyncInfo getSyncInfo(IResource local, IResourceVariant base, IResourceVariant remote) throws TeamException {
// Override to use a custom sync info
FileSystemSyncInfo info = new FileSystemSyncInfo(local, base, remote, this.getResourceComparator());
info.init();
return info;
}
/**
* Make the resource in-sync.
* @param resource the resource
* @throws TeamException
*/
public void makeInSync(IResource resource) throws TeamException {
ThreeWaySynchronizer synchronizer = getSynchronizer();
byte[] remoteBytes = synchronizer.getRemoteBytes(resource);
if (remoteBytes == null) {
if (!resource.exists())
synchronizer.flush(resource, IResource.DEPTH_ZERO);
} else {
synchronizer.setBaseBytes(resource, remoteBytes);
}
}
/**
* Make the change an outgoing change
* @param resource
* @throws TeamException
*/
public void markAsMerged(IResource resource, IProgressMonitor monitor) throws TeamException {
makeInSync(resource);
try {
resource.touch(monitor);
} catch (CoreException e) {
throw TeamException.asTeamException(e);
}
}
}
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