Package 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, David Matejcek

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
boolean	booleanValueOf(Node contextNode, String xpathString)	Evaluate an XPath expression to a boolean value.
static Node	getContext(Tag t)
List<Object>	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 Details

XPathUtil

public XPathUtil(PageContext pc)

Constructs a new XPathUtil object associated with the given PageContext.

Method Details

valueOf

public String valueOf(Node contextNode,
 String xpathString)
               throws JspTagException

Evaluate an XPath expression to a String value.

Throws:

JspTagException

booleanValueOf

public boolean booleanValueOf(Node contextNode,
 String xpathString)
                       throws JspTagException

Evaluate an XPath expression to a boolean value.

Throws:

JspTagException

selectNodes

public List<Object> selectNodes(Node contextNode,
 String xpathString)
                         throws JspTagException

Evaluate an XPath expression to a List of nodes.

Throws:

JspTagException

selectSingleNode

public Node selectSingleNode(Node contextNode,
 String xpathString)
                      throws JspTagException

Evaluate an XPath expression to a single node.

Throws:

JspTagException

getContext

public static Node getContext(Tag t)
                       throws JspTagException

Throws:

JspTagException