Copyright (c) 2000, 2017 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
    Olexiy Buyanskyy  - Bug 76386 - [History View] CVS Resource History shows revisions from all branches
/*******************************************************************************
 * Copyright (c) 2000, 2017 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
 *     Olexiy Buyanskyy <olexiyb@gmail.com> - Bug 76386 - [History View] CVS Resource History shows revisions from all branches
 *******************************************************************************/

package org.eclipse.team.core.history.provider;

import java.net.URI;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IStorage;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.team.core.history.IFileRevision;
import org.eclipse.team.core.history.ITag;

Abstract implementation of IFileRevision that can be implemented by clients. 
See Also:
IFileRevision
Since:
3.2/**
 * Abstract implementation of {@link IFileRevision} that can be implemented by
 * clients.
 *
 * @see IFileRevision
 *
 * @since 3.2
 */
public abstract class FileRevision implements IFileRevision {

	private static final class LocalFileRevision extends FileRevision {
		private final IFile file;

		private LocalFileRevision(IFile file) {
			this.file = file;
		}

		@Override
		public IStorage getStorage(IProgressMonitor monitor) {
			return file;
		}

		@Override
		public String getName() {
			return file.getName();
		}

		@Override
		public boolean exists() {
			return file.exists();
		}

		@Override
		public long getTimestamp() {
			return file.getLocalTimeStamp();
		}

		@Override
		public URI getURI() {
			return file.getLocationURI();
		}

		@Override
		public IFileRevision withAllProperties(IProgressMonitor monitor) throws CoreException {
			return this;
		}

		@Override
		public boolean isPropertyMissing() {
			return false;
		}

		@Override
		public int hashCode() {
			return file.hashCode();
		}

		@Override
		public boolean equals(Object obj) {
			if (obj == this)
				return true;
			if (obj instanceof LocalFileRevision) {
				LocalFileRevision other = (LocalFileRevision) obj;
				return other.file.equals(this.file);
			}
			return false;
		}
	}

	
Return a file state representing the current state of the
local file.
Params:
file – a local file
Returns:
a file state representing the current state of the
local file
Deprecated:
This method doesn't do anything useful so it has been deprecated./**
	 * Return a file state representing the current state of the
	 * local file.
	 * @param file a local file
	 * @return a file state representing the current state of the
	 * local file
	 * @deprecated This method doesn't do anything useful so it has been deprecated.
	 */
	@Deprecated
	public static IFileRevision getFileRevisionFor(final IFile file) {
		return new LocalFileRevision(file);
	}

	@Override
	public URI getURI() {
		return null;
	}

	@Override
	public long getTimestamp() {
		return -1;
	}

	@Override
	public boolean exists() {
		return true;
	}

	@Override
	public String getContentIdentifier() {
		return null;
	}
	@Override
	public String getAuthor() {
		return null;
	}
	@Override
	public String getComment() {
		return null;
	}

	
{@inheritDoc}
Since:
3.6/**
	 * {@inheritDoc}
	 * @since 3.6
	 */
	@Override
	public ITag[] getBranches() {
		return new ITag[0];
	}

	@Override
	public ITag[] getTags() {
		return new ITag[0];
	}

}