/*
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Created on Jul 7, 2008
*/
package com.bigdata.relation.accesspath;
import java.io.Serializable;
import cutthecrap.utils.striterators.IFilterTest;
/**
* Filter for accepting or rejecting visited elements.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id$
*/
public interface IElementFilter<E> extends IFilterTest, Serializable {
// /**
// * True iff the argument is matched by the filter.
// *
// * @param e
// * An element.
// *
// * @return true iff the element is accepted by the filter.
// */
// public boolean isValid(E e);
/**
* Return true iff this this filter can be used on the specified object
* (filter on the object class).
* <p>
* Note: This was added to make it possible filter out cases where the
* runtime type system was throwing a {@link ClassCastException} in the
* {@link #isValid(Object)} implementation.
*
* @param o
* An object of some type.
*
* @return <code>true</code> if the element can be inspected by this filter.
*/
public boolean canAccept(Object o);
}