| /******************************************************************************* |
| * Copyright (c) 2000, 2006 IBM Corporation and others. |
| * 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.team.internal.core.subscribers; |
| |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.team.core.TeamException; |
| import org.eclipse.team.core.variants.IResourceVariant; |
| import org.eclipse.team.core.variants.ResourceVariantByteStore; |
| import org.eclipse.team.core.variants.ResourceVariantTree; |
| import org.eclipse.team.core.variants.ThreeWaySubscriber; |
| |
| /** |
| * Allow access to the base resource variants but do not support refresh |
| * or modification. |
| */ |
| public final class ThreeWayBaseTree extends ResourceVariantTree { |
| |
| private ThreeWaySubscriber subscriber; |
| |
| /* |
| * A resource variant byte store that accesses the base bytes from a three-way |
| * synchronizer. The modification methods are disabled as the base should |
| * only be modified in the synchronizer directly. |
| */ |
| static class BaseResourceVariantByteStore extends ResourceVariantByteStore { |
| private ThreeWaySubscriber subscriber; |
| public BaseResourceVariantByteStore(ThreeWaySubscriber subscriber) { |
| this.subscriber = subscriber; |
| } |
| public void dispose() { |
| // Nothing to do |
| } |
| public byte[] getBytes(IResource resource) throws TeamException { |
| return subscriber.getSynchronizer().getBaseBytes(resource); |
| } |
| public boolean setBytes(IResource resource, byte[] bytes) throws TeamException { |
| // Base bytes are set directly in the synchronizer |
| return false; |
| } |
| public boolean flushBytes(IResource resource, int depth) throws TeamException { |
| // Base bytes are flushed directly in the synchronizer |
| return false; |
| } |
| public boolean deleteBytes(IResource resource) throws TeamException { |
| // Base bytes are deleted directly in the synchronizer |
| return false; |
| } |
| public IResource[] members(IResource resource) throws TeamException { |
| return subscriber.getSynchronizer().members(resource); |
| } |
| } |
| |
| /** |
| * Create a base resource variant tree that accesses the base bytes |
| * from a three-way synchronizer. |
| * @param subscriber the three-way subscriber |
| */ |
| public ThreeWayBaseTree(ThreeWaySubscriber subscriber) { |
| super(new BaseResourceVariantByteStore(subscriber)); |
| this.subscriber = subscriber; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.team.internal.core.subscribers.caches.AbstractResourceVariantTree#refresh(org.eclipse.core.resources.IResource[], int, org.eclipse.core.runtime.IProgressMonitor) |
| */ |
| public IResource[] refresh(IResource[] resources, int depth, IProgressMonitor monitor) throws TeamException { |
| return new IResource[0]; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.team.internal.core.subscribers.caches.AbstractResourceVariantTree#fetchMembers(org.eclipse.team.core.synchronize.IResourceVariant, org.eclipse.core.runtime.IProgressMonitor) |
| */ |
| protected IResourceVariant[] fetchMembers(IResourceVariant variant, IProgressMonitor progress) throws TeamException { |
| // Refresh not supported |
| return new IResourceVariant[0]; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.team.internal.core.subscribers.caches.AbstractResourceVariantTree#fetchVariant(org.eclipse.core.resources.IResource, int, org.eclipse.core.runtime.IProgressMonitor) |
| */ |
| protected IResourceVariant fetchVariant(IResource resource, int depth, IProgressMonitor monitor) throws TeamException { |
| // Refresh not supported |
| return null; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.team.internal.core.subscribers.caches.IResourceVariantTree#roots() |
| */ |
| public IResource[] roots() { |
| return getSubscriber().roots(); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.team.internal.core.subscribers.caches.IResourceVariantTree#getResourceVariant(org.eclipse.core.resources.IResource) |
| */ |
| public IResourceVariant getResourceVariant(IResource resource) throws TeamException { |
| return getSubscriber().getResourceVariant(resource, getByteStore().getBytes(resource)); |
| } |
| |
| private ThreeWaySubscriber getSubscriber() { |
| return subscriber; |
| } |
| |
| } |