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/*
* Copyright (c) 2004 - 2011 Eike Stepper (Berlin, Germany) 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:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.emf.cdo.internal.efs;
import org.eclipse.emf.cdo.common.branch.CDOBranchPoint;
import org.eclipse.emf.cdo.eresource.CDOResourceNode;
import org.eclipse.emf.cdo.view.CDOView;
import org.eclipse.net4j.util.ObjectUtil;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.core.filesystem.EFS;
import org.eclipse.core.filesystem.IFileInfo;
import org.eclipse.core.filesystem.IFileStore;
import org.eclipse.core.filesystem.provider.FileInfo;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.Path;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
/**
* @author Eike Stepper
*/
public final class CDOFileRoot extends AbstractFileStore
{
private CDOFileSystem fileSystem;
private String authority;
private String repositoryName;
private IPath branchPath;
private long timeStamp;
private transient CDOView view;
public CDOFileRoot(CDOFileSystem fileSystem, String authority, String repositoryName, IPath branchPath, long timeStamp)
{
this.fileSystem = fileSystem;
this.authority = authority;
this.repositoryName = repositoryName;
this.branchPath = branchPath;
this.timeStamp = timeStamp;
}
@Override
public CDOFileSystem getFileSystem()
{
return fileSystem;
}
public String getAuthority()
{
return authority;
}
public String getRepositoryName()
{
return repositoryName;
}
public IPath getBranchPath()
{
return branchPath;
}
public long getTimeStamp()
{
return timeStamp;
}
@Override
public IPath getPath()
{
return Path.EMPTY;
}
@Override
public CDOView getView(IProgressMonitor monitor)
{
if (view == null)
{
view = fileSystem.getView(this, monitor);
}
return view;
}
@Override
protected CDOResourceNode doGetResourceNode(IProgressMonitor monitor)
{
return getView(monitor).getRootResource();
}
@Override
public IFileStore getParent()
{
return null;
}
@Override
public String getName()
{
return "";
}
@Override
public IFileInfo fetchInfo(int options, IProgressMonitor monitor)
{
FileInfo info = new FileInfo(getName());
info.setLastModified(EFS.NONE);
info.setExists(true); // Root resource is always present
info.setLength(EFS.NONE);
info.setDirectory(true);
info.setAttribute(EFS.ATTRIBUTE_READ_ONLY, false);
return info;
}
@Deprecated
@Override
public IFileStore getChild(IPath path)
{
return new CDOFileStore(this, path);
}
@Override
public IFileStore getChild(String name)
{
return getChild(new Path(name));
}
@Override
public String[] childNames(int options, IProgressMonitor monitor) throws CoreException
{
List<String> result = new ArrayList<String>();
for (EObject object : getView(monitor).getRootResource().getContents())
{
if (object instanceof CDOResourceNode)
{
CDOResourceNode node = (CDOResourceNode)object;
result.add(node.getName());
}
}
return result.toArray(new String[result.size()]);
}
@Override
public InputStream openInputStream(int options, IProgressMonitor monitor) throws CoreException
{
throw new UnsupportedOperationException();
}
@Override
public OutputStream openOutputStream(int options, IProgressMonitor monitor) throws CoreException
{
throw new UnsupportedOperationException();
}
@Override
public boolean equals(Object obj)
{
if (obj == this)
{
return true;
}
if (obj.getClass() == CDOFileRoot.class)
{
CDOFileRoot that = (CDOFileRoot)obj;
if (view != null && view == that.view)
{
// Optimization
return true;
}
return authority.equals(that.authority) && repositoryName.equals(that.repositoryName)
&& branchPath.equals(that.branchPath) && timeStamp == that.timeStamp;
}
return false;
}
@Override
protected int createHashCode()
{
return authority.hashCode() ^ repositoryName.hashCode() ^ branchPath.hashCode() ^ ObjectUtil.hashCode(timeStamp);
}
@Override
public void appendURI(StringBuilder builder)
{
builder.append(fileSystem.getScheme());
builder.append("://");
builder.append(authority);
builder.append("/");
builder.append(repositoryName);
builder.append("/");
builder.append(branchPath.toPortableString());
builder.append("/@");
if (timeStamp != CDOBranchPoint.UNSPECIFIED_DATE)
{
builder.append(timeStamp);
}
}
}
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