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 5878 2013-01-07 20:23:13Z teodord $
  Author:
    Lucian Chirita (lucianc@users.sourceforge.net)

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `XalanXPathExecuter()` Default constructor.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `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

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