E get() {
if (value != null) return value;
try {
value = db.fetch(recid, serializer);
} catch (IOException e) {
throw new IOError(e);
}
return value;
}
void delete() {
try {
db.delete(recid);
} catch (IOException e) {
throw new IOError(e);
}
value = null;
serializer = null;
db = null;
}