Visiting features

Visitor pattern is offered by AccessibleProxyObject base API, with the two methods accept(PAMELAVisitor) and accept(PAMELAVisitor,VisitingStrategy).

The visiting strategy should be one of Embedding or Exhaustive (default strategy is Embedding), where PAMELAVisitor is a trivial Java interface presenting the method visit(Object(Object).

• Embedding visiting strategy results in a deep-first tree exploration where the tree is the covering tree supported by embedding properties.
• Exhaustive visiting strategy result in a full exploration of the object graph.

Here is the API of visitor pattern:

public interface AccessibleProxyObject extends HasPropertyChangeSupport, KeyValueCoding {

    ...

    /**
     * Called to be visited by a {@link PAMELAVisitor}
     * 
     * Default strategy is Embedding
     * 
     * @param visitor
     */
    public void accept(PAMELAVisitor visitor);

    /**
     * Called to be visited by a {@link PAMELAVisitor}
     * 
     * @param visitor
     * @param strategy
     */
    public void accept(PAMELAVisitor visitor, VisitingStrategy strategy);

    ...
}

With a visitor declared as a class implementing:

public interface PAMELAVisitor {

    public void visit(Object object);

    public enum VisitingStrategy {
        Embedding, Exhaustive
    }
}