Package oracle.fabric.common.xml.xpath

Interface IXPathFunction

public interface IXPathFunction
Interface for implementing custom xpath function in SOA components.

Implementations of Function are functions which are used to evaluate a function-call within an XPath expression.

Lets say we want to implement a custom xpath function which gets a value of w3c node, the function name is getNodeValue(arg1) XPath function. Here is the code, which implements this function: 

 package com.collaxa.cube.xml.xpath.functions.xml;
 public class GetNodeValue implements IXPathFunction  
 {
 
   Object call(IXPathContext context, List args) throws XPathFunctionException 
   {
       org.w3c.dom.Node node = (org.w3c.dom.Node) args.get(0);
       return node.getNodeValue()
    }
 }

  • Method Summary

    Modifier and Type
    Method
    Description
    Object
    call(IXPathContext context, List args)
    Call this XPath function.

  • Method Details

    • call

      Object call(IXPathContext context, List args) throws oracle.fabric.common.xml.xpath.XPathFunctionException
      Call this XPath function.
      Parameters:
      context - The context at the point in the expression when the function is called.
      args - List of arguments provided during the call of the function.
      Returns:
      The result of the XPath function.
      Throws:
      oracle.fabric.common.xml.xpath.XPathFunctionException