+ final String my_id_0 = id_0.trim();
+ final String my_id_1 = id_1.trim();
+ if ( my_id_0.toLowerCase().compareTo( my_id_1.toLowerCase() ) < 0 ) {
+ //_id_0 = my_id_0;
+ //_id_1 = my_id_1;
+ _data = my_id_0 + BinaryDomainCombination.SEPARATOR + my_id_1;