How to do if I need the DAS and SDO to support reading and writing the BLOB or CLOB field

[LiTaojian]

Hi  All , 
     
     I  need the DAS to support  reading and write the BLOB field , 
but  TypeHelper.getType("commonj.sdo", "Blob") is return null  , 
Could you give me some tips to implement the function or fix out the bugs ?
Or How could I implement the function immediately ?


Li Taojian .