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We are using Eclipselink for ORM, but we have a need for some more lightweight database interactions that are more equivalent to JDBC. My question is whether Eclipselink supports such an idiom and whether there are any advantages of it to straight JDBC. I can see one advantage being consistency and being able to use the existing connection handling. Others?
Specifically, what I’m looking for is something equivalent to Hibernate’s Native SQL Query.
If you are using both JPQL and SQL queries in your application then JPA 2 native queries are probably the right approach. Here are some examples :
http://www.oracle.com/technology/pub/articles/vasiliev-jpql.html
If your app only uses SQL queries and updates, then ORM is just an overhead. You can get declarative transactions also differently, for example via Spring’s JDBC support.