Local SSL process [method - CMT used] atomic operations issu

[sankul123]

Hi ALL,

I have a following process, to be done by (Local)SSB[Stateless Session Bean]-
<atomic operations in a method in SSL>
1. Persist [update] some values in database.
2. Some file operations , write some data to file.
</atomic operations>
I want both operations to be atomic. My Local SSL EJB is a CMT and its method 'transaction' attribute is marked for new transaction.
Code:

void myAtomicProcess(String a, String b)throws MyException{

//1. update db...

//2. update file ...

}

If there is any exception while committing [at the end of method] , I want to rollback my changes done to file i,e restore the file as it was.

Please help me to achieve this.

[sankul123]

This is how I have implemented ,
Used SSB with BMT-
Code:

void myAtomicProcess(String a, String b)throws MyException{
 try{
 userTx.begin()
 //2. update file ...
 fileOperFlag = true
 //1. update db...
 userTx.commit()
 DBoperFlag = true

 }catch(){}
 finally{
 if(fileOperFlag && !DBoperFlag){
 //Restore the file to its original state
 }

 }

}

Please let me know if you see any flaw in this.

Regards,
Sandeep Kulkarni