6. Wrox - Java Persistence API (JPA) Tutorial Overview

[@samert8248]

This is the simplest, strongest explanation I have ever seen, this is pretty pretty good.

[@luv2codetv]

Samer T awesome! thanks for the kind words :-)

[@chochisalvatore491]

Thank u for this brilliant tutorial *_* i'm really confused, what i know that JPA give us a a specification and we should use a provider like (hibernate) for implementation , but here i can see already we have methods for CRUD operations (like persist) without using a provider (hibernate) . can-we use jpa without hibernate ? Thanks

[@luv2codetv]

You will need a JPA implementation such as eclipselink or hibernate.

[@luv2codetv]

+luv2code this example uses eclipselink behind the scenes.

[@chochisalvatore491]

Thanks a lot

[@luv2codetv]

+Chochi Salvatore you are welcome. You may be interested in my hibernate tutorial (20+ videos) kzbin.info/aero/PLEAQNNR8IlB6QiKZP0_5dYoId-7YXOdBe

[@nisaashraf8529]

great explanation !!! .. em just doubtful about that last "e" u r using in the sql query. where does that e come from ?

[@luv2codetv]

"e" is just an alias. it can be anything / any character.

[@nisaashraf8529]

Ok got it . Thank u :)

[@AfterEffexs]

Hey you are great! is it possible to persist a WebSocket Session into a bean or smth like that? I need to persist the session for the cause when an external REST-Client invokes my servlet to get access on it

[@luv2codetv]

not that I'm aware of ...

[@bigsneeks5714]

brilliant tutorial....very logical

[@luv2codetv]

+rene te boekhorst I just released a new batch of Hibernate tutorials. Check them out here: goo.gl/ce60Wv

[@caraimananca3160]

Hi. is there a way to store in database a column like total sum which is calculated automatically based on fields from other tables? I tried with @formula but it doesn't work

[@luv2codetv]

hmm ... you may want to use regular SQL for this. Here's an example: - stackoverflow.com/questions/11252289/sum-total-of-several-mysql-columns-stored-in-another-column hope this helps.

[@Nossairmaroc]

hey, i love your videos! For Example your tutorials about JSF. I want to ask you if you have a JPA tutorial with more details in udemy? Best greetings

[@luv2codetv]

thanks for the kind words. unfortunately, I don't have anything else on JPA. I plan to do something in the future. however, you should be able to find some jpa tutorials here on youtube or udemy. cheer!

[@LiveLoveLaughEveryday]

Right to the point. Thanks a lot!!!

[@luv2codetv]

+weimao2 Great, thanks for the compliments. If you want more details on JPA/Hibernate ... then I have access to more videos. You can get details here: www.luv2code.com/learnspringhibernate

[@octaviocardenas4012]

Really good video, I know that Java has a JPA implementation, and you don't have to use Hibernate, I think to use JPA is the better way use databases in Java

[@luv2codetv]

yep, good point. you can use any JPA implementation. such as hibernate or eclipselink. thanks for watching the video :-)

[@luvyadav8127]

gettting confusion between @PersistenceUnit and @PersistenceContext because we normally use PersistenceUnit to injects an EntityManagerFactory and PersistenceContext injects an EntityManager

[@siya3955]

One word: WOOOOOOOOOOOOW!!!!!! :D :D

[@luv2codetv]

Thanks! I have a ton of free Java ebooks. Join my email list and I will send them out to you :-). www.luv2code.com/joinlist

[@siya3955]

Just did.

[@luv2codetv]

+Siya Mzam awesome! glad to have you on board. I'll send A LOT of free Java ebooks your way :-)