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A Generic Iterator for Tree Traversal

By Alexander Ananiev , November 01, 2000

Generic tree traversal logic can be used with any type of tree-like structure or tree node, letting you focus on the application logic rather than the internals of the tree structure organization.
Nov00: Algorithm Alley 


<b>(a)</b>
if (nodeAdapter.hasChildren( node) && depth<=maxDepth)
  // go to children's level ...

<b>(b)</b>
public static final int idLevel = 2;
//...
Document xdoc = parser.readStream(new FileReader( "personnel.xml"));
TIterator tIterator = new TIterator ( xdoc , new DOMAdapter(), idLevel );
for( Node node = xdoc; node!=null; node=(Node)tIterator.next() ){
  // perform processing...
}

Example 3: The tree iterator stops at the second level and does not go any deeper.



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