code: private static final boolean isDCProp(String in) {//2004.05.18 wdn5e wasn't static final
          if (in.equals("mDate") || in.equals("dcmDate")) {
              return false;
          }
          for (String n : FieldSearchSQLImpl.DB_COLUMN_NAMES) {
              if (n.startsWith("dc")
                      && n.toLowerCase().indexOf(in.toLowerCase()) == 2) { //2004.05.18 wdn5e (was -1)
                  return true;
              }
          }
          return false;
      }
docs: Tell whether a field name, as given in the search request, is a dublin
  core field.
  
  @param the
  field
  @return whether it's a dublin core field