Solution to convert Quarter expression as param value before execute EJB2 query

Issue

• In a query a date search criteria includes quater information like '2010q3'.
  With the help from DBA, we realized that the view,  which app queries from, requires a date format to be set correctly in the session level. When we use jdbc, we can easily use "alter session  set nls_date_format='YYYYMMDD'", but now because we are using entity bean, we want to know how we can achieve it in JBoss when using EJB2 CMP Entity beans?