code: public static Collection<Comparable<?>> getDatabaseShardingValues(final String logicTable) {
          return null == HINT_MANAGER_HOLDER.get() ? Collections.<Comparable<?>>emptyList() : HINT_MANAGER_HOLDER.get().databaseShardingValues.get(logicTable);
      }
docs: Get database sharding values.
  
  @param logicTable logic table
  @return database sharding values