code: public boolean isCached()
      {
          try {
              Record record = this.getOwner();
              Object objKey = record.getHandle(DBConstants.OBJECT_ID_HANDLE);
              return (m_hsCache.contains(objKey)); // True if cache value exists
          } catch (DBException ex)    {
              ex.printStackTrace();
          }
          return false;   // Never
      }
docs: Cache the target field using the current record.