JPA in JSF-Converter

Question

Is it the right way to use an entitymanager in a JSF-Converter?

Or is it better to set only the Id-Attribute(s) and let the viewbean calls the Entitymanager (or a service with an Entitymanager)?

The converter is used for a selectOneMenu. But I do not know how to implement a solution, I want to know, what is the better / cleaner way to do this.

Could you please add, for which situation you need a JSF-Converter? For example do you got a `` component that can contain different entities? — Tobias Liefke, Oct 15 '15 at 13:15
I want to know what is the better and cleaner way, not the implementation of an genericEntityConverter — schlagi123, Oct 15 '15 at 13:22
*"The converter is used for a selectOneMenu"* I'd say best way is to not convert via JPA but via f:selectItems. — BalusC, Oct 16 '15 at 13:57

Paul Wasilewski · Answer 1 · 2016-04-13T17:08:08.773

0

In general software should be developed in multiple layers (Multilayered Architecture). Therefore a service which calls the entity manager to retrieve your objects is always a good way (SoC and KISS). Especially when you need access to the objects from multiple places (DRY).

edited Apr 13 '16 at 17:08

answered Oct 15 '15 at 13:18

Paul Wasilewski

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JPA in JSF-Converter

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