* @param reader The CatalogReader to use.
*/
public void addReader(String mimeType, CatalogReader reader) {
if (readerMap.contains(mimeType)) {
Integer pos = (Integer) readerMap.get(mimeType);
readerArr.set(pos.intValue(), reader);
} else {
readerArr.add(reader);
Integer pos = new Integer(readerArr.size()-1);
readerMap.put(mimeType, pos);
}