Tag: entitymanager

Jpa unit test – Service – entity manager null

entitymanager java jpa spring-data-jpa unit-testing

This is what I tried: the error that I get is ‘ Runner org.junit.internal.runners.ErrorReportingRunner (used on class com.unibuc.AWBD_Project_v1.services.ServiceTest) does not support filtering and will therefore be run completely. Test class should have exactly one public zero-argument constructor’ Here is the LocationService: Answer Hello there is 3 issues in your test code. 1 you should remove the EntityManager entityManager from your

Should EntityManagerFactory be closed at application shutdown?

entitymanager entitymanagerfactory hibernate java shutdown-hook

I have a Java application that has a GUI made with Swing and that uses two databases interchangeably. One of the two databases is mongoDB and the other one is MySQL. Which database to use is chosen with a command line option. For the MySQL database I am also using Hibernate and JPA. The code I have looks like this:

Returning result of count native query using EntityManager in Java?

classcastexception entitymanager integer java

I have the following SQL Query : I am trying to write this in java : However I get this exception: How can I solve this? Answer You can also use Number and call intValue():