__PACKAGE__->inflate_column('xml',
                                  {
                                   inflate => sub { MyObject->new( xml => $_[0] ) },
                                   deflate => sub { $_[0]->asXML },
                                  }
                           );


##</code><code>##

 $row->xml(MyObject->new( xml => "<hubba/>" );  # row is now dirty
 $row->update;  # goes to the database

##</code><code>##

 $row->xml->bubba("whatever");   #works in memory but column is not considered dirty
 $row->update;  # does nothing