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Java Source Code / Java Documentation » Report » jasperreports 2.0.1 » net.sf.jasperreports.engine.util.xml

Source Cross Reference Class Diagram Java Document (Java Doc)

net.sf.jasperreports.engine.util.xml .JRXPathExecuter

All known Subclasses:   net.sf.jasperreports.engine.util.xml .XalanXPathExecuter,  net.sf.jasperreports.engine.util.xml .JaxenXPathExecuter,
JRXPathExecuter
public interface JRXPathExecuter (Code)
An XPath expression executer.
JRXmlDataSource XML data sources delegate XPath executions to implementations of this interface.
author:
   Lucian Chirita (lucianc@users.sourceforge.net)
version:
   $Id: JRXPathExecuter.java 1756 2007-06-14 16:11:20Z lucianc $
See Also:   JRXPathExecuterFactory
See Also:   JRXPathExecuterUtils

Method Summary
NodeList selectNodeList(Node contextNode, String expression)
     Selects a node list by evaluating an XPath expression on a context node.
Object selectObject(Node contextNode, String expression)
     Selects an object by evaluating an XPath expression on a context node.

Method Detail
selectNodeList
NodeList selectNodeList(Node contextNode, String expression) throws JRException(Code)
Selects a node list by evaluating an XPath expression on a context node.
Parameters:
  contextNode - the context node (a document can also be used)
Parameters:
  expression - the XPath expression the selected node list
throws:
  JRException - if the XPath evaluation failed

selectObject
Object selectObject(Node contextNode, String expression) throws JRException(Code)
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.
Parameters:
  contextNode - the context node (a document can also be used)
Parameters:
  expression - the XPath expression the selected node or value
throws:
  JRException - if the XPath evaluation failed

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