content: // (c) ALEXANDRE BRILLANT : http://www.japisoft.com
  // All this work is confidential, you have rights to
  // change and evolve it for your products but you
  // have no rights to sell it, propose concurrent works.
  // Morever any changes to bugs or evolutions should
  // be send to JAPISOFT that needs to maintain a
  // valid version and has all rights on the product.
  
  package com.japisoft.xpath.node;
  
  import com.japisoft.xpath.XPathContext;
  import com.japisoft.xpath.FastVector;
  
  /**
  This program is available under two licenses : 
  
  1. For non commercial usage : 
  
  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/>.
  
  2. For commercial usage :
  
  You need to get a commercial license for source usage at : 
  
  http://www.editix.com/buy.html
  
  Copyright (c) 2018 Alexandre Brillant - JAPISOFT SARL - http://www.japisoft.com
  
  @author Alexandre Brillant - abrillant@japisoft.com
  @author JAPISOFT SARL - http://www.japisoft.com
  
  */
  public abstract class AbstractNode {
  	private FastVector vChildren;
  	private AbstractNode parentNode;
  	private AbstractNode root;
  
  	public AbstractNode() {
  		super();
  	}
  
  	public void addNode(AbstractNode node) {
  		if (vChildren == null) {
  			vChildren = new FastVector();
  		}
  		vChildren.addElement(node);
  		node.parentNode = this;
  		if ( root == null ) {
  			root = this;
  		}
  		node.root = root;
  	}
  
  	public AbstractNode getNodeAt(int index) {
  		if (vChildren == null)
  			return null;
  		else
  			return (AbstractNode) vChildren.elementAt(index);
  	}
  
  	public int getNodeCount() {
  		if (vChildren != null)
  			return vChildren.size();
  		return 0;
  	}
  
  	public AbstractNode getParentNode() {
  		return parentNode;
  	}
  
  	public AbstractNode getRootNode() {
  		return root;
  	}
  
  	public abstract Object eval(XPathContext context);
  
  }
  
  // AbstractNode ends here
  