Metacat

      //compare serial version.

          checkModifiedImmutableFields(currentSysmeta, sysmeta);

          checkOneTimeSettableSysmMetaFields(currentSysmeta, sysmeta);

          if(currentSysmeta.getObsoletes() == null && sysmeta.getObsoletes() != null) {

              //we are setting a value to the obsoletes field, so we should make sure if there is not object obsoletes the value

              String obsoletes = existsInObsoletes(sysmeta.getObsoletes());

              if( obsoletes != null) {

                  throw new InvalidSystemMetadata("4956", "There is an object with id "+obsoletes +

                          " already obsoletes the pid "+sysmeta.getObsoletes().getValue() +". You can't set the object "+pid.getValue()+" to obsolete the pid "+sysmeta.getObsoletes().getValue()+" again.");

              }

          if(currentSysmeta.getObsoletedBy() == null && sysmeta.getObsoletedBy() != null) {

              //we are setting a value to the obsoletedBy field, so we should make sure that the no another object obsoletes the pid we are updating. 

              String obsoletedBy = existsInObsoletedBy(sysmeta.getObsoletedBy());

              if( obsoletedBy != null) {

                  throw new InvalidSystemMetadata("4956", "There is an object with id "+obsoletedBy +

                          " already is obsoleted by the pid "+sysmeta.getObsoletedBy().getValue() +". You can't set the pid "+pid.getValue()+" to be obsoleted by the pid "+sysmeta.getObsoletedBy().getValue()+" again.");

              }

          }