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/*******************************************************************************
* Copyright (c) 2002 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v0.5
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v05.html
*
* Contributors:
* IBM - Initial implementation
******************************************************************************/
package org.eclipse.team.internal.core.target;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.team.core.TeamException;
import org.eclipse.team.core.sync.ILocalSyncElement;
import org.eclipse.team.core.sync.IRemoteResource;
import org.eclipse.team.core.sync.IRemoteSyncElement;
import org.eclipse.team.core.sync.RemoteSyncElement;
import org.eclipse.team.core.target.IRemoteTargetResource;
import org.eclipse.team.core.target.TargetManager;
import org.eclipse.team.core.target.TargetProvider;
import org.eclipse.team.internal.core.Policy;
import org.eclipse.team.internal.core.TeamPlugin;
/**
* Is a synchronization element that can calculate three-way sync
* states based on timestamps. This is useful for synchronizing between
* repositories without revision history and thus the base contents is
* not available (e.g. non-versioning DAV, FTP...)
*
* @see IRemoteSyncElement
*/
public class RemoteTargetSyncElement extends RemoteSyncElement {
private IRemoteTargetResource remote;
private IResource local;
private TargetProvider provider;
public RemoteTargetSyncElement(TargetProvider provider, IResource local, IRemoteTargetResource remote) {
this.local = local;
this.remote = remote;
this.provider = provider;
}
/**
* @see RemoteSyncElement#create(boolean, IResource, IRemoteResource, IRemoteResource, Object)
*/
public IRemoteSyncElement create(boolean isThreeWay, IResource local, IRemoteResource base, IRemoteResource remote, Object data) {
return new RemoteTargetSyncElement(provider, local, (IRemoteTargetResource)remote);
}
/**
* @see RemoteSyncElement#timestampEquals(IResource, IRemoteResource)
*/
protected boolean timestampEquals(IResource e1, IRemoteResource e2) {
return false;
}
/**
* @see RemoteSyncElement#timestampEquals(IRemoteResource, IRemoteResource)
*/
protected boolean timestampEquals(IRemoteResource e1, IRemoteResource e2) {
return false;
}
/**
* @see LocalSyncElement#create(IResource, IRemoteResource, Object)
*/
public ILocalSyncElement create(IResource local, IRemoteResource base, Object data) {
return new RemoteTargetSyncElement(provider, local, (IRemoteTargetResource)base);
}
/**
* @see LocalSyncElement#getData()
*/
protected Object getData() {
return null;
}
/**
* @see LocalSyncElement#isIgnored(IResource)
*/
protected boolean isIgnored(IResource resource) {
return false;
}
/**
* @see IRemoteSyncElement#getRemote()
*/
public IRemoteResource getRemote() {
return remote;
}
/**
* @see IRemoteSyncElement#isThreeWay()
*/
public boolean isThreeWay() {
return true;
}
/**
* @see ILocalSyncElement#getLocal()
*/
public IResource getLocal() {
return local;
}
/**
* @see ILocalSyncElement#getBase()
*/
public IRemoteResource getBase() {
return null;
}
/**
* @see ILocalSyncElement#getSyncKind(int, IProgressMonitor)
*/
public int getSyncKind(int granularity, IProgressMonitor progress) {
progress.beginTask(null, 100);
int description = IN_SYNC;
IResource local = getLocal();
boolean localExists = local.exists();
boolean hasBase = provider.hasBase(local);
boolean isOutgoing;
boolean isIncoming;
if (hasBase) {
isOutgoing = provider.isDirty(local);
isIncoming = isOutOfDate(Policy.subMonitorFor(progress, 10));
} else {
// if there's no base, use existance to determine direction
isOutgoing = localExists;
isIncoming = remote != null;
}
if (remote == null) {
if (!localExists) {
// this should never happen
// Assert.isTrue(false);
} else {
// no remote but a local
if (!isOutgoing && isIncoming) {
description = INCOMING | DELETION;
} else if (isOutgoing && isIncoming) {
description = CONFLICTING | CHANGE;
} else if (!isOutgoing && !isIncoming) {
description = OUTGOING | ADDITION;
} else if (isOutgoing && !isIncoming) {
description = OUTGOING | ADDITION;
}
}
} else {
if (!localExists) {
// a remote but no local
if (!isOutgoing /* and both out of date and not out of date */) {
description = INCOMING | ADDITION;
} else if (isOutgoing && !isIncoming) {
description = OUTGOING | DELETION;
} else if (isOutgoing && isIncoming) {
description = CONFLICTING | CHANGE;
}
} else {
// have a local and a remote
if (!isOutgoing && !isIncoming) {
// ignore, there is no change;
} else if (!isOutgoing && isIncoming) {
description = INCOMING | CHANGE;
} else if (isOutgoing && !isIncoming) {
description = OUTGOING | CHANGE;
} else {
description = CONFLICTING | CHANGE;
}
// if contents are the same, then mark as pseudo change
if (description != IN_SYNC && compare(granularity, false, local, remote, Policy.subMonitorFor(progress, 90)))
description |= PSEUDO_CONFLICT;
}
}
return description;
}
/**
* Returns the provider.
* @return TargetProvider
*/
protected TargetProvider getProvider() {
return provider;
}
/**
* Return true if the resource associated with the receiver is out-of-date
*/
protected boolean isOutOfDate(IProgressMonitor monitor) {
IResource local = getLocal();
if (provider.hasBase(local)) {
try{
return provider.isOutOfDate(local, monitor);
} catch(TeamException e) {
TeamPlugin.log(e.getStatus());
return true;
}
}
return false;
}
}
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