Batch strategy - newbie question

[deepak.mohanakumar]

Hi All,
As mentioned I am a newbie to Spring Batch. I have the below scenario on my hands.

1) User gives an Excel sheet with a max of 5000 Account nos and these account information are saved in the database.
2) Each loan can have 2000 images.
3) Now, I have to read all account numbers from the database, for each account get all the image locations (in SAN) from the database and copy the images onto a predefined location.


Now my question is, What should be a job and what should be a step.

Should I consider copying all images of an account number to be a job and copying each image as a step (5000 jobs, each having 2000 steps)?
Or should I consider an image copying as job and then have copying the image as one step (5000 * 2000 jobs, each with 1 step)?


Eagerly waiting for your solution. Thanks in advance.

[Marten Deinum]

Neither. The whole thing is the job, and I guess it would be a single step...

The job is read number from excel, find image locations, copy images. Would be a ItemReader which processes the excel stuff, ItemProcessor which could get the image locations, and a Writer which does the copying. Or the Writer can do both (get locations and copy).

[deepak.mohanakumar]

Thanks a ton Marten, for your reply.

That makes sense. I will progress with this approach. I guess I will hang around here for the great help and suggestions from experts like you.