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Cayenne Object Persistence Framework

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package org.apache.cayenne.exp;

/** 
 * Noop implementation of TraversalHandler. 
 * Useful as a superclass for partial implementations 
 * of TraversalHandler. 
 * 
 * @author Andrei Adamchik
 */
public class TraversalHelper implements TraversalHandler {

    public void startNode(Expression node, Expression parentNode) {
    }

    public void endNode(Expression node, Expression parentNode) {
    }

    public void finishedChild(Expression node, int childIndex, boolean hasMoreChildren) {
    }

    public void objectNode(Object leaf, Expression parentNode) {
    }  
}