Is there any way to state that a field of an entity class is not a persistent attribute?

Question

The question is in the title.

Some explanation: I can't implement necessary mapping. But I can get all necessary data using queries in DAOs. So, I want to insert that data manually to my entity in DAOs findAll () method.

But JPA treats all entity's fields as persistent attributes and adds them to generated sql-queries. Of course, I get an exception that query cannot be performed. So, I need to state that 'this field will be set manually, skip it'.

P.S. This solution sounds ugly even to me, but I cant find any better solution because I have 'immutable' DB schema and I need to map it on my entities.

Answer 1

Use the @Transient annotation

Answer 2

This is off the top of my head and could be wrong, but...

isn't there an @transient annotation? Or simply the transient Java modifier?

I think JPA won't mess with fields thus marked.