How to generate multiple outgoing record from a single incoming record?

[nitin.tripathi]

Imagine the incoming record is as shown below which denotes that the given user has migrated from one service to another

#user, fromService, toService
-------------------------------------------
user-a, quoteOfTheDay, songOfTheDay

Now, process the record such that it generates two records;
1- deactivate user from 'quoteOfTheDay'
2- activate user for 'songOfTheDay'

the required output is as below;

#chargetype, service, user
-----------------------------------------
deactivate, quoteOfTheDay, user-a
activate, songOfTheDay, user-a

Any help is appreciated.

[rahul.akkinaa]

It is as simple as to to extract user data from your input Flat File via a FlatFileItemReader<UserServiceChangeData>

public class UserServiceChangeData implements Serializable{

 private String userId;
 private String fromService;
 private String toService;

}

and your expected output to be

public class UserActionData implements Serializable{

 private String userId;
 private String service;
 private String chargeType;

}

Write an equivalent implementation for ItemProcessor<UserServiceChangeData,List<UserActio nData>> where the process method resolve a single UserServiceChangeData instance into a list of UserActionData elements and passes it to a FlatFileItemWriter<List<UserActionData>> within the scope of same chunk step

Hope that helps

Rahul

[nitin.tripathi]

sure that helps. thanks.

[nitin.tripathi]

To complicate the matter, I do receive records for renewals in the same file which will be processed to generate single outputs

#user, fromService, toService
-------------------------------------------
user-a, quoteOfTheDay, null # for service renewals

is it possible to mix the two?