# Uses of Interface
org.apache.cayenne.exp.TraversalHandler

Packages that use TraversalHandler
Package
Description
org.apache.cayenne.exp
Cayenne data expression classes.

- ## Uses of TraversalHandler in org.apache.cayenne.exp

  Classes in org.apache.cayenne.exp that implement TraversalHandler
  Modifier and Type
  Class
  Description
  `class`
  `TraversalHelper`
  Noop implementation of TraversalHandler.
  Methods in org.apache.cayenne.exp with parameters of type TraversalHandler
  Modifier and Type
  Method
  Description
  `protected void`
  Expression.`traverse(Expression parentExp, TraversalHandler visitor)`
  Traverses itself and child expressions, notifying visitor via callback methods as it goes.
  `void`
  Expression.`traverse(TraversalHandler visitor)`
  Traverses itself and child expressions, notifying visitor via callback methods as it goes.