* @param propertyname The name of the property
*/
public void compute(String area, String documentid, String propertyname) {
Publication publication = getPublication();
DocumentIdToPathMapper pathMapper = publication.getPathMapper();
String path = pathMapper.getPath(documentid, "");
log("path " + path);
int index = path.lastIndexOf("/");
String dir = path.substring(0, index);
log("dir " + dir);