nl.knaw.huygens.timbuctoo.graph.Vertex.java Source code

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Here is the source code for nl.knaw.huygens.timbuctoo.graph.Vertex.java

Source

package nl.knaw.huygens.timbuctoo.graph;

/*
 * #%L
 * Timbuctoo core
 * =======
 * Copyright (C) 2012 - 2015 Huygens ING
 * =======
 * 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, either version 3 of the 
 * License, or (at your option) any later version.
 * 
 * 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, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 * #L%
 */

import java.util.Collection;
import java.util.Map;

import com.google.common.collect.Maps;

public class Vertex {

    private final String name;
    private final Map<Vertex, Edge> adjacencies;

    public Vertex(String name) {
        this.name = name;
        adjacencies = Maps.newHashMap();
    }

    public String getName() {
        return name;
    }

    public Collection<Edge> getEdges() {
        return adjacencies.values();
    }

    /**
     * Returns the edge from this vertex to the specified vertex,
     * creating a new vertex if it does not exist.
     */
    public Edge getEdgeTo(Vertex vertex) {
        Edge edge = adjacencies.get(vertex);
        if (edge == null) {
            edge = new Edge(vertex);
            adjacencies.put(vertex, edge);
        }
        return edge;
    }

}