package edu.stanford.db.rdf.syntax.strawman;import org.w3c.rdf.model.*;import edu.stanford.db.xml.util.Element;import org.w3c.rdf.util.RDFUtil;import java.util.*;public class StrawElement extends Element {  /**   * subject URI of this node   */  Resource subject;  boolean anonymous = false;  /**   * for ordered children   */  int counter = 0;  /**   * arcs going out from this node/subject URI   * Once an arc is processed it is deleted from the vector   */  Vector arcs = new Vector(); // of StrawArcs  /**   * total number of arcs seen   */  //  int totalArcs = 0;  /**   * arc leading to this node from parent   */  Resource arcFromParent;  /**   * digest of the path from the root   * When this node is fully processed, and is anonymous, this variable contains the digest of the node   */  byte[] digestPath;  /**   * depth from the root   */  int depth;  /**   * object must be RDFNode or StrawElement   */  void addArc(Resource predicate, Object object) {      // System.err.println("---Adding arc to " + getName() + ": " + predicate + "->" + object);    arcs.addElement(new StrawArc(predicate, object));    //    totalArcs++;  }  int next() {    return ++counter;  }  public String toString() {    return "[ELEMENT " + getName() + "]";  }}