question: public QName checkDuplicatesNS ( ) { if ( fLength <= SIZE_LIMIT ) { for ( int i = 0 ; i < fLength - 1 ; ++ i ) { Attribute att1 = fAttributes [ i ] ; for ( int j = i + 1 ; j < fLength ; ++ j ) { Attribute att2 = fAttributes [ j ] ; if ( att1 . name . localpart == att2 . name . localpart && att1 . name . uri == att2 . name . uri ) { return att2 . name ; } } } } else { fIsTableViewConsistent = false ; prepareTableView ( ) ; Attribute attr ; int bucket ; for ( int i = fLength - 1 ; i >= 0 ; -- i ) { attr = fAttributes [ i ] ; bucket = getTableViewBucket ( attr . name . localpart , attr . name . uri ) ; if ( fAttributeTableViewChainState [ bucket ] != fLargeCount ) { fAttributeTableViewChainState [ bucket ] = fLargeCount ; attr . next = null ; fAttributeTableView [ bucket ] = attr ; } else { Attribute found = fAttributeTableView [ bucket ] ; while ( found != null ) { if ( found . name . localpart == attr . name . localpart && found . name . uri == attr . name . uri ) { return attr . name ; } found = found . next ; } attr . next = fAttributeTableView [ bucket ] ; fAttributeTableView [ bucket ] = attr ; } } } return null ; }
target:  Checks for duplicate expanded names (local part and namespace name pairs) in the attribute specification. If a duplicate is found its name is returned. <p/> This should be called once all the in-scope namespaces for the element enclosing these attributes is known, and after all the attributes have gone through namespace binding.