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 Post subject: How to use a hibernate parameter list as a pseudo-table?
PostPosted: Wed Nov 29, 2017 10:16 am 
Newbie

Joined: Wed Nov 29, 2017 9:48 am
Posts: 2
I have the following (partial) SQL query:
Code:
  ... and OrderItem.id in (select oit.id from :cardserialNos csnt, OrderItem oit where csnt.THING between oit.cardSeqStartRange and oit.cardSeqEndRange) and ...

Furthermore, I have the following java code to support it:

Code:
  idsQuery.setParameterList("cardserialNos", criteria.getCardSerialNos());

My issue is, that in order to use the parameterlist as a pseudo-table the way I am above (taking the Cartesian product with the queried table so I can find out which card sequence ranges surround ANY of the cardserialNos), I need to learn what needs to go in the SQL query rather than csnt.THING.

Basically:
What is the proper column name of the hibernate parameter list pseudo-table?


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 Post subject: Re: How to use a hibernate parameter list as a pseudo-table?
PostPosted: Wed Nov 29, 2017 4:03 pm 
Hibernate Team
Hibernate Team

Joined: Thu Sep 11, 2014 2:50 am
Posts: 1638
Location: Romania
That's not supported via JPQL. You need to use Criteria API if you want to vary the Entity or Table name.

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 Post subject: Re: How to use a hibernate parameter list as a pseudo-table?
PostPosted: Thu Nov 30, 2017 6:57 am 
Newbie

Joined: Wed Nov 29, 2017 9:48 am
Posts: 2
I see. Unfortunate.

I have been reading up on the Criteria API, but I am not quite yet seeing how I would do this with it.
Is there any sort of tutorial you could point me to?


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 Post subject: Re: How to use a hibernate parameter list as a pseudo-table?
PostPosted: Thu Nov 30, 2017 7:09 am 
Hibernate Team
Hibernate Team

Joined: Thu Sep 11, 2014 2:50 am
Posts: 1638
Location: Romania
We have a chapter dedicated to the Criteria API in our User Guide, which is a good place to start.

However, your query is not a typical one, so the chance of finding a tutorial that explain exactly your problem is rather low. Hence, my suggestion. Just Google "JPA Criteria API" + whatever you are interested in doing.

This way, you can easily find the following answers:

1. This StackOverflow answer shows how to use a Subquery for the IN clause.
2. This StackOverflow answer shows how to create the Cartesian Product for the subquery.

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