Java example source code file (VertexSequence.java)

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Java - Java tags/keywords

igraph, ivertexsequence, nosuchelementexception, override, unsupportedoperationexception, util, vertexsequence

The VertexSequence.java Java example source code

package org.deeplearning4j.graph.graph;

import org.deeplearning4j.graph.api.IGraph;
import org.deeplearning4j.graph.api.Vertex;
import org.deeplearning4j.graph.api.IVertexSequence;

import java.util.NoSuchElementException;

/**A vertex sequence represents a sequences of vertices in a graph
 * @author Alex Black
 */
public class VertexSequence<V> implements IVertexSequence {
    private final IGraph<V,?> graph;
    private int[] indices;
    private int currIdx = 0;

    public VertexSequence(IGraph<V, ?> graph, int[] indices){
        this.graph = graph;
        this.indices = indices;
    }

    @Override
    public int sequenceLength() {
        return indices.length;
    }

    @Override
    public boolean hasNext() {
        return currIdx < indices.length;
    }

    @Override
    public Vertex<V> next() {
        if(!hasNext()) throw new NoSuchElementException();
        return graph.getVertex(indices[currIdx++]);
    }

    @Override
    public void remove(){
        throw new UnsupportedOperationException();
    }
}