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/*
* Copyright (C) 2003-2009 JNode.org
* 2009,2010 Matthias Treydte <mt@waldheinz.de>
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package de.waldheinz.fs;
/**
* This interface is the base interface for objects that are part of a
* {@link FileSystem}.
*
* @author Ewout Prangsma <epr at jnode.org>
* @author Matthias Treydte <waldheinz at gmail.com>
*/
public interface FsObject {
/**
* Checks if this {@code FsObject} is still valid.
*
* An object is not valid anymore if it has been removed from the
* filesystem. All invocations on methods (except this method and the
* methods inherited from {@link java.lang.Object}) of
* invalid objects must throw an {@link IllegalStateException}.
*
* @return if this {@code FsObject} is still valid
*/
public boolean isValid();
/**
* Checks if this {@code FsObject} is read-only. Any attempt to modify a
* read-only {@code FsObject} must result in a {@link ReadOnlyException}
* being thrown, and the modification must not be performed.
*
* @return if this {@code FsObject} is read-only
* @since 0.6
*/
public boolean isReadOnly();
}
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