/**
* Recursively evaluates an element.
*
* @param element the element
* @return the result of processing the element
* @throws ProcessorException if there is an error in processing
*/
@SuppressWarnings("unchecked")
public String evaluate(Element element) throws ProcessorException {
// Is it a valid element?
if (element == null) {
return "";
}
// Search for the tag in the processor registry.
Class<? extends P> processorClass = null;
String elementNamespaceURI = element.getNamespaceURI();
Document elementDocument = element.getDocument();
boolean emitXMLNS =
elementDocument != null
&& (element.equals(element.getDocument().getRootElement())
|| (elementNamespaceURI != null
&& !elementNamespaceURI.equals(
element.getDocument().getRootElement().getNamespaceURI())));
if (elementNamespaceURI == null
|| this._registry.getNamespaceURI().equals(elementNamespaceURI)) {
processorClass = this._registry.get(element.getName());
// Process the element with a new instance of the processor.
return Classes.getNewInstance(processorClass, "Processor", this._core).process(element, this);
}
// otherwise (if this element is from a different namespace)
if (element.getContent().size() == 0) {
return JDOM.renderEmptyElement(element, emitXMLNS);
}
// otherwise...
return JDOM.renderStartTag(element, emitXMLNS)
+ evaluate(element.getContent())
+ JDOM.renderEndTag(element);
}
/**
* Processes whatever is at the given URL and returns a response.
*
* @param url where to find what is to be processed
* @return the result of processing whatever is found at the URL
* @throws ProcessorException if there is a problem processing what is found at the URL
*/
public String processResponse(URL url) throws ProcessorException {
return evaluate(JDOM.getDocument(url, this._logger));
}