org.apache.taglibs.standard.tag.common.xml

Class XPathUtil

java.lang.Object

org.apache.taglibs.standard.tag.common.xml.XPathUtil

public class XPathUtil
extends Object

Support for tag handlers that evaluate XPath expressions.

Author:

Shawn Bayern, Ramesh Mandava ( ramesh.mandava@sun.com ), Pierre Delisle ( pierre.delisle@sun.com ), Dongbin Nie

Constructor Summary

Constructors

Constructor and Description
XPathUtil(javax.servlet.jsp.PageContext pc) Constructs a new XPathUtil object associated with the given PageContext.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	booleanValueOf(Node contextNode, String xpathString) Evaluate an XPath expression to a boolean value.
static Node	getContext(javax.servlet.jsp.tagext.Tag t)
static void	printDetails(Node n)
List	selectNodes(Node contextNode, String xpathString) Evaluate an XPath expression to a List of nodes.
Node	selectSingleNode(Node contextNode, String xpathString) Evaluate an XPath expression to a single node.
String	valueOf(Node contextNode, String xpathString) Evaluate an XPath expression to a String value.

Methods inherited from class java.lang.Object

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

Constructor Detail

XPathUtil

public XPathUtil(javax.servlet.jsp.PageContext pc)

Constructs a new XPathUtil object associated with the given PageContext.

Method Detail

valueOf

public String valueOf(Node contextNode,
             String xpathString)
               throws javax.servlet.jsp.JspTagException

Evaluate an XPath expression to a String value.

Throws:

javax.servlet.jsp.JspTagException

booleanValueOf

public boolean booleanValueOf(Node contextNode,
                     String xpathString)
                       throws javax.servlet.jsp.JspTagException

Evaluate an XPath expression to a boolean value.

Throws:

javax.servlet.jsp.JspTagException

selectNodes

public List selectNodes(Node contextNode,
               String xpathString)
                 throws javax.servlet.jsp.JspTagException

Evaluate an XPath expression to a List of nodes.

Throws:

javax.servlet.jsp.JspTagException

selectSingleNode

public Node selectSingleNode(Node contextNode,
                    String xpathString)
                      throws javax.servlet.jsp.JspTagException

Evaluate an XPath expression to a single node.

Throws:

javax.servlet.jsp.JspTagException

getContext

public static Node getContext(javax.servlet.jsp.tagext.Tag t)
                       throws javax.servlet.jsp.JspTagException

Throws:

javax.servlet.jsp.JspTagException

printDetails

public static void printDetails(Node n)