wt.visitor
Interface Walker

All Known Implementing Classes:

AbstractObjectGraph, wt.visitor.BasicWalker, BFSWalker, DFSWalker, wt.visitor.Navigator

public interface Walker

This interface is responsible for controlling the overall traversal mechanism. It includes a single traverse() method that provides multi-level navigation of associations between Persistable objects. Depth-first traversal is an example of an implementation. It uses a NodeExpander object to do the actual expansion of nodes. It also is responsible for calling the visit methods on the Visitor object as the structure is traversed. If any visit method returns a boolean false value, then that node will not be traversed any further.

Supported API: true

Extendable: true

Method Summary

void	traverse(Persistable root) Traverses the root node.

Method Detail

traverse

void traverse(Persistable root)
              throws WTException

Traverses the root node.

Supported API: true

Parameters:

root -

Throws:

WTException