Module org.apache.jena.arq

Package org.apache.jena.sparql.syntax

Class ElementWalker

java.lang.Object

org.apache.jena.sparql.syntax.ElementWalker

public class ElementWalker
extends Object

An element visitor that walks the graph pattern tree for one query level. applying a visitor at each Element traversed.
Does not process subqueries.
Does not process (NOT)EXISTS in filters.
These will need to call down themselves if it is meaningful for the visitor. Bottom-up walk - apply to subelements before applying to current element.

Constructor Summary

Constructors

Constructor	Description
ElementWalker()

Method Summary

Modifier and Type	Method	Description
static void	walk(Element el, ElementVisitor visitor)
static void	walk(Element el, ElementVisitor visitor, ElementVisitor beforeVisitor, ElementVisitor afterVisitor)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ElementWalker

public ElementWalker()

Method Details

walk

public static void walk(Element el,
 ElementVisitor visitor)

walk

public static void walk(Element el,
 ElementVisitor visitor,
 ElementVisitor beforeVisitor,
 ElementVisitor afterVisitor)