com.tailf.jnc

Class Path

java.lang.Object

com.tailf.jnc.Path

Direct Known Subclasses:

PathCreate

public class Path
extends java.lang.Object

A path expression. This is a small subset of the W3C recommendations of XPath 1.0 expression evaluator and parser.

The result of evaluating an expression is a set of Element nodes that fulfill the location steps, with node tests, and predicates. The path expression operates on an element tree.

Example:

 Path expr = new Path("/hosts/host[name='kalle']/ip");
 NodeSet s = path.eval(element_tree);
 

Constructor Summary

Constructors

Constructor and Description
Path(java.lang.String pathStr) Constructor for a Path from a path expression string.

Method Summary

Modifier and Type	Method and Description
NodeSet	eval(Element contextNode) Evaluates the Path given a contextNode.
java.lang.String	toString() Returns a string representation of this Path.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Path

public Path(java.lang.String pathStr)
     throws JNCException

Constructor for a Path from a path expression string.

Throws:

JNCException

Method Detail

eval

public NodeSet eval(Element contextNode)
             throws JNCException

Evaluates the Path given a contextNode.

Makes a selection by traversing the locationSteps, return an ArrayList (NodeSet) of Element nodes.

Parameters:

contextNode - The context node to evaluate expressions on

Returns:

A nodeSet of elements

Throws:

JNCException

toString

public java.lang.String toString()

Returns a string representation of this Path. It's a parse tree.

Overrides:

toString in class java.lang.Object