try {
if (_dropCls != null && !_dropCls.isEmpty()) {
Class<?>[] cls = (Class[]) _dropCls.toArray
(new Class[_dropCls.size()]);
if (!io.drop(cls, _mode, null))
_log.warn(_loc.get("bad-drop", _dropCls));
}
if (_flushSchema) {
// drop portions of the known schema that no mapping uses, and