Questions tagged [service]

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68
votes
7answers
65k views

How essential is it to make a service layer?

I started building an app in 3 layers (DAL, BL, UI) [it mainly handles CRM, some sales reports and inventory]. A colleague told me that I must move to service layer pattern, that developers came to ...
4
votes
2answers
3k views

local communications between two apps

To make a platform-independent program in C++ I want to separate the GUI (separate for each OS, using native libraries/APIs) and the actual program. Obviously those two need to communicate with each ...
10
votes
2answers
5k views

Is there an elegant way to check unique contraints on domain object attributes without moving business logic into service layer?

I have been adapting domain-driven design for about 8 years now and even after all these years, there is still one thing, that has been bugging me. That is checking for a unique record in data storage ...
1
vote
2answers
4k views

Android Design - Service vs Thread for Networking

I am writing an Android app, finally (yay me) and for this app I need persistant, but user closeable, network sockets (yes, more than one). I decided to try my hand at writing my own version of an ...
12
votes
3answers
29k views

How to manage 2 DAO methods in a single transaction?

In an interview someone asked me : How do we manage 2 transactional/dao methods in a single transaction. Desired capabilities: If anyone of them fails we need to rollback both methods. Both of the ...
0
votes
1answer
1k views

If Service Layer is doing nothing, just calling methods in DAO . Can my Service Interface just extend DAO Interfaces?

Why do we need to write same methods in Service Interface, when we just want a replica of DAO Interface. interface DAOI { method1(); method2(); } interface ServiceI extends DAOI { } instead of ...