Manage @NamedNativeQuery and schema

Question

I have many EntityManager, one per schema that I have (I use entity-mappings file to map EMs with schemas). It works.

When I use @Nam

Answer 1

Excerpts from documentation :

• NamedNativeQuery : Specifies a named native SQL query. Query names are scoped to the persistence unit.
• NamedQuery : Specifies a static, named query in the Java Persistence query language. Query names are scoped to the persistence unit.

It isn't specified directly that NamedNativeQuery is static, but both are same scoped & can't be altered afterwards & it's the desired behaviour.

Named queries are mean to be accessed by multiple modules - application wide, identified by unique name, so they are static & constant. You can try building a query string dynamically & can create a native query from it, instead of named native query.