Case statement in CE_JOIN join conidtion

Hi All,

I am trying to replicate the following SQL code using CE_JOIN. Can someone please help me on how i can achieve this.

SELECT

  a.REFERENCE01,  a.REFERENCE02 , a.REFERENCE03, a.REFERENCE04, a.REFERENCE05, a.REFERENCE06, b.REFERENCE09,

  b.REFERENCE10

  FROM table1  INNER JOIN table2 ON

  a.REFERENCE01 = b.REFERENCE01

  AND a.REFERENCE02 = CASE WHEN b.REFERENCE02 = 'ALL' THEN a.REFERENCE02 ELSE b.REFERENCE02 END

  AND a.REFERENCE03 = CASE WHEN b.REFERENCE03 = 'ALL' THEN a.REFERENCE03 ELSE b.REFERENCE03 END

  AND a.REFERENCE04 = CASE WHEN b.REFERENCE04 = 'ALL' THEN a.REFERENCE04 ELSE b.REFERENCE04 END

Regards,

Ravi.