org.jgrapht.graph.DefaultDirectedGraph Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of jgrapht-core Show documentation
The newest version!
/*
 * (C) Copyright 2003-2018, by Barak Naveh 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 org.jgrapht.*;
import org.jgrapht.graph.builder.*;
import org.jgrapht.util.*;

import java.util.function.*;

/**
 * The default implementation of a directed graph. A default directed graph is a non-simple directed
 * graph in which multiple (parallel) edges between any two vertices are not permitted, but
 * loops are.
 * 
 * @param  the graph vertex type
 * @param  the graph edge type
 * 
 */
public class DefaultDirectedGraph
    extends
    AbstractBaseGraph
{
    private static final long serialVersionUID = -2066644490824847621L;

    /**
     * Creates a new graph.
     *
     * @param edgeClass class on which to base the edge supplier
     */
    public DefaultDirectedGraph(Class edgeClass)
    {
        this(null, SupplierUtil.createSupplier(edgeClass), false);
    }

    /**
     * Creates a new graph.
     * 
     * @param vertexSupplier the vertex supplier, can be null
     * @param edgeSupplier the edge supplier, can be null
     * @param weighted whether the graph is weighted or not
     */
    public DefaultDirectedGraph(
        Supplier vertexSupplier, Supplier edgeSupplier, boolean weighted)
    {
        super(
            vertexSupplier, edgeSupplier,
            new DefaultGraphType.Builder()
                .directed().allowMultipleEdges(false).allowSelfLoops(true).weighted(weighted)
                .build());
    }

    /**
     * Create a builder for this kind of graph.
     * 
     * @param edgeClass class on which to base factory for edges
     * @param  the graph vertex type
     * @param  the graph edge type
     * @return a builder for this kind of graph
     */
    public static  GraphBuilder> createBuilder(
        Class edgeClass)
    {
        return new GraphBuilder<>(new DefaultDirectedGraph<>(edgeClass));
    }

    /**
     * Create a builder for this kind of graph.
     * 
     * @param edgeSupplier the edge supplier of the new graph
     * @param  the graph vertex type
     * @param  the graph edge type
     * @return a builder for this kind of graph
     */
    public static  GraphBuilder> createBuilder(
        Supplier edgeSupplier)
    {
        return new GraphBuilder<>(new DefaultDirectedGraph<>(null, edgeSupplier, false));
    }

}

// End DefaultDirectedGraph.java