public  void configure(Configuration config) throws ConfigurationException 
{
        this.configuration = JXPathHelper.setup(config);
}

Configure component. Preprocess list of packages and functions to add to JXPath context later.

 public Object getAttribute(String name,
    Configuration modeConf,
    Map objectModel) throws ConfigurationException 
{
        Object contextObj = getContextObject(modeConf, objectModel);
        if (modeConf != null) {
            name = modeConf.getChild("parameter").getValue(this.parameter != null ? this.parameter : name);
        }
        return JXPathHelper.getAttributeValue(name, modeConf, this.configuration, contextObj);
}

 public Iterator getAttributeNames(Configuration modeConf,
    Map objectModel) throws ConfigurationException 
{
        Object contextObj = getContextObject(modeConf, objectModel);
        return JXPathHelper.getAttributeNames(this.configuration, contextObj);
}

 public Object[] getAttributeValues(String name,
    Configuration modeConf,
    Map objectModel) throws ConfigurationException 
{
        Object contextObj = getContextObject(modeConf, objectModel);
        if (modeConf != null) {
            name = modeConf.getChild("parameter").getValue(this.parameter != null ? this.parameter : name);
        }
        return JXPathHelper.getAttributeValues(name, modeConf, this.configuration, contextObj);
}

 abstract protected Object getContextObject(Configuration modeConf,
    Map objectModel) throws ConfigurationException
Returns the object which should be used as JXPath context.
Descendants should override this method to return a specific object
that is requried by the implementing class.
Examples are: request, session and application context objects.