CODEWITHSUNDEEP
jpa-2.0
Johannes
Johannes

Reputation: 287

FetchMode in JPA 2 CriteriaQuery

I'm currently in the process of switching from Hibernate to pure JPA 2 (which by the way turned out to be much more time consuming than I initially expected).
The biggest problem I'm having so far is finding a way to force eager loading of lazy properties.
With Hibernate this was done using: criteria.setFetchMode("person", FetchMode.JOIN);.
Is there any way to do this with JPA 2?

Upvotes: 16

Views: 19246

Answers (1)

Jim Tough
Jim Tough

Reputation: 15239

Try this:

CriteriaQuery<Person> c = cb.createQuery(Person.class);
Root<Person> person = c.from(Person.class);
person.fetch("address");
c.select(person);

Assuming there is a one-to-one relationship between your Person entity and an Address entity.

Upvotes: 21

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