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querying problem with Hibernate when we use multiple tables in query

 
raminaa niilian
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Hi
Thank you for reading my post
I have an application that i want to migrate it to hibernate/EJB3, problem is that in my application i have some cases that columns that are included in the query are dynamically added to querry,
now when it return a collection of Objects what kind of objects it will return ?


thanks
 
Halcon Guatemala
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Hi Raminaa, are you saying these columns are added to projection or restrictions of your query? These columns are from the same table? Do you want to use Criteria API?

Thanks
 
Mark Spritzler
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If you are using projections then it returns a two dimensional Object array Object[][].

Or you can create a new class that has the attributes of the projection, then in your Query statement use

"select new MyObject(o.a, o.b, o.c)..."

But your MyObject must have a constructor that takes those exact arguments.

Mark
 
Jignesh Patel
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cases that columns that are included in the query are dynamically added to querry,
now when it return a collection of Objects what kind of objects it will return


They will return set object in hibernate. If you want to dig more you can think of List too.
 
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