protected String compute()
{
final Column column = context( Column.class );
final Table table = column.nearest( Table.class );
final PrimaryKey pk = table.getPrimaryKey().content();
if( pk != null)
{
for( final PrimaryKey.Column pkcol : pk.getColumns() )
{
final String name = pkcol.getName().content();
if( name != null && name.equals( column.getName().content() ) )
{