Hibernate Tips is a series of posts in which I describe a quick and easy solution for common Hibernate questions. If you have a question you like me to answer, please leave a comment below. Question: How can I select a list of scalar values in a Criteria query?
Since version 5.2, Hibernate starts to use Java 8 classes in their proprietary APIs. The JPA standard will most likely do the same with version 2.2, but who knows when we will get that. Until then, Hibernate’s proprietary APIs are all we have, and I will present the most interesting changes here on the blog….
Hibernate Tips is a new series of posts in which I describe a quick and easy solution for common Hibernate questions. If you have a question you like me to answer, please leave a comment below. Question: Hibernate does not use the first- and second-level for queries. Is there any way to cache the result…
Defining a static named query via the @NamedQuery annotation is the most common way in JPA. It has the main advantage that the persistence provider can compile and validate the query at start-up time. But you also have to define the query statically at compile time. OK, you can still define a dynamic query at runtime but how do you…
When you write a criteria query or create a dynamic entity graph, you need to reference the entity classes and their attributes. The quickest and easiest way is to provide the required names as Strings. But this has several drawbacks, e.g. you have to remember or look-up all the names of the entity attributes when you write the query….