com.saxonica.extra
Class PathFinder

java.lang.Object
  com.saxonica.extra.PathFinder

All Implemented Interfaces:

PatternFinder

public class PathFinder
extends Object
implements PatternFinder

This interface enables a client to find all nodes in a document that match a particular pattern. In fact, it allows any subset of nodes in a document to be located. It is used specifically by the internal implementation of keys. In XSLT, the criterion for including nodes in a key is that they match an XSLT pattern. Internally, however, keys are used for a wider range of purposes, and the nodes indexed by the key are defined by a PatternFinder

Constructor Summary

PathFinder(Expression path)

Method Summary

Expression	getSelectionExpression() Get the underlying expression (usually a path expression or filter expression)
SequenceIterator	selectNodes(DocumentInfo doc, XPathContext context) Select nodes in a document using this PatternFinder.
String	toString() Get a string representation of the expression

Methods inherited from class java.lang.Object

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

Constructor Detail

PathFinder

public PathFinder(Expression path)

Method Detail

selectNodes

public SequenceIterator selectNodes(DocumentInfo doc,
                                    XPathContext context)
                             throws XPathException

Select nodes in a document using this PatternFinder.

Specified by:

selectNodes in interface PatternFinder

Parameters:

doc - the document node at the root of a tree

context - the dynamic evaluation context

Returns:

an iterator over the selected nodes in the document.

Throws:

XPathException

getSelectionExpression

public Expression getSelectionExpression()

Get the underlying expression (usually a path expression or filter expression)

toString

public String toString()

Get a string representation of the expression

Overrides:

toString in class Object