net.sf.jasperreports.engine.util.xml
Class XalanXPathExecuter

java.lang.Object
  net.sf.jasperreports.engine.util.xml.XalanXPathExecuter

All Implemented Interfaces:

JRXPathExecuter

Direct Known Subclasses:

XalanNsAwareXPathExecuter

public class XalanXPathExecuter
extends java.lang.Object
implements JRXPathExecuter

XPath executer implementation that uses Apache Xalan.

Version:

$Id: XalanXPathExecuter.java 4595 2011-09-08 15:55:10Z teodord $

Author:

Lucian Chirita (lucianc@users.sourceforge.net)

Constructor Summary

XalanXPathExecuter()
Default constructor.

Method Summary

org.w3c.dom.NodeList	selectNodeList(org.w3c.dom.Node contextNode, java.lang.String expression) Selects a node list by evaluating an XPath expression on a context node.
java.lang.Object	selectObject(org.w3c.dom.Node contextNode, java.lang.String expression) Selects an object by evaluating an XPath expression on a context node.

Methods inherited from class java.lang.Object

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

Constructor Detail

XalanXPathExecuter

public XalanXPathExecuter()

Default constructor.

Method Detail

selectNodeList

public org.w3c.dom.NodeList selectNodeList(org.w3c.dom.Node contextNode,
                                           java.lang.String expression)
                                    throws JRException

Description copied from interface: JRXPathExecuter

Selects a node list by evaluating an XPath expression on a context node.

Specified by:

selectNodeList in interface JRXPathExecuter

Parameters:

contextNode - the context node (a document can also be used)

expression - the XPath expression

Returns:

the selected node list

Throws:

JRException - if the XPath evaluation failed

selectObject

public java.lang.Object selectObject(org.w3c.dom.Node contextNode,
                                     java.lang.String expression)
                              throws JRException

Description copied from interface: JRXPathExecuter

Selects an object by evaluating an XPath expression on a context node.

If the expression evaluates to a node list, the first node in the list should be returned. Otherwise, the primitive value resulted from the evaluation should be returned as a java.lang.String, java.lang.Number or java.lang.Boolean.

Specified by:

selectObject in interface JRXPathExecuter

Parameters:

contextNode - the context node (a document can also be used)

expression - the XPath expression

Returns:

the selected node or value

Throws:

JRException - if the XPath evaluation failed