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/*
 * (C) Copyright 2009-2016, by Ilya Razenshteyn and Contributors.
 *
 * JGraphT : a free Java graph-theory library
 *
 * This program and the accompanying materials are dual-licensed under
 * either
 *
 * (a) the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation, or (at your option) any
 * later version.
 *
 * or (per the licensee's choosing)
 *
 * (b) the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation.
 */
package org.jgrapht.graph;

import java.util.*;

import org.jgrapht.*;
import org.jgrapht.util.*;

/**
 * An undirected version of the read-only union of two graphs.
 * 
 * @param  the graph vertex type
 * @param  the graph edge type
 */
public class UndirectedGraphUnion
    extends GraphUnion>
    implements UndirectedGraph
{
    private static final long serialVersionUID = -740199233080172450L;

    UndirectedGraphUnion(
        UndirectedGraph g1, UndirectedGraph g2, WeightCombiner operator)
    {
        super(g1, g2, operator);
    }

    UndirectedGraphUnion(UndirectedGraph g1, UndirectedGraph g2)
    {
        super(g1, g2);
    }

    @Deprecated
    UndirectedGraphUnion(
        UndirectedGraph g1, UndirectedGraphUnion g2, WeightCombiner operator)
    {
        super(g1, g2, operator);
    }

    @Deprecated
    UndirectedGraphUnion(UndirectedGraph g1, UndirectedGraphUnion g2)
    {
        super(g1, g2);
    }

    @Override
    public int degreeOf(V vertex)
    {
        Set res = edgesOf(vertex);
        return res.size();
    }
}

// End UndirectedGraphUnion.java