package edu.vt.marian.search;

import java.util.*;
import java.io.*;

import edu.vt.marian.common.*;


/**
 * Any mapping whereby a single (weighted) object can be turned into a WtdObjSet
	(for instance, the mapping to all nodes exactly one link away from a
	given object).  Typically, the weight of the key WtdObj will be applied
	to all members of the set.
 *
 * @author Robert France
 * @see edu.vt.marian.common.WtdObj
 * @see WtdObjSet
 */

public interface WtdObjToSetMapping
{
	/**
	 * Map a single object to an associated weighted object set (where "associated"
	 *	is defined by the implementing class).
	 *
	 * @param	key	the FullID of the seed object.
	 * @return	A corresponding weighted object set.
	 */
	public WtdObjSet map(WtdObj key);

}