/**
* Parses an external file using LibLoader and returns the parsed result as an object of type
* <code>targetClass</code>. The file is given as relative pathname (relative to the current
* source file). The current helper-methods are used as parse-parameters for the external parsing.
*
* @param file the file to be parsed.
* @param targetClass the target type of the parse operation.
* @param map the map of parse parameters.
* @return the result, never null.
* @throws ParseException if parsing the result failed for some reason.
* @throws ResourceLoadingException if there was an IO error loading the resource.
* @see #deriveParseParameters()
*/
protected Object performExternalParsing(final String file, final Class targetClass, final Map map)
throws ParseException, ResourceLoadingException {
try {
final ResourceManager resourceManager = rootHandler.getResourceManager();
final ResourceKey source = rootHandler.getSource();
final ResourceKey target = resourceManager.deriveKey(source, file, map);
final DependencyCollector dc = rootHandler.getDependencyCollector();
final Resource resource =
resourceManager.create(target, rootHandler.getContext(), targetClass);
dc.add(resource);
return resource.getResource();
} catch (ResourceLoadingException rle) {
throw rle;
} catch (ResourceException e) {
throw new ParseException("Failure while loading data: " + file, e, getLocator());
}
}
