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Hibernate's core ORM functionality

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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or .
 */
package org.hibernate.envers.internal.tools.graph;

import java.util.Collection;

/**
 * Defines a graph, where each vertex has a representation, which identifies uniquely a value.
 * Representations are comparable, values - not.
 *
 * @author Adam Warski (adam at warski dot org)
 */
public interface GraphDefiner {
	R getRepresentation(V v);

	V getValue(R r);

	Collection getNeighbours(V v);

	Collection getValues();
}