Top "Jpa" questions

When use getOne and findOne methods Spring Data JPA

I have an use case where it calls the following: @Override @Transactional(propagation=Propagation.REQUIRES_NEW) public UserControl getUserControlById(Integer …

jpa spring-data spring-data-jpa

How does spring.jpa.hibernate.ddl-auto property exactly work in Spring?

I was working on my Spring boot app project and noticed that, sometimes there is a connection time out error …

spring hibernate jpa database-connection ddl

Can someone explain mappedBy in JPA and Hibernate?

I am new to hibernate and need to use one-to-many and many-to-one relations. It is a bi-directional relationship in my …

java hibernate jpa jakarta-ee hibernate-mapping

Make hibernate ignore class variables that are not mapped

I thought hibernate takes into consideration only class variables that are annotated with @Column. But strangely today when I added …

java hibernate jpa

JPA CascadeType.ALL does not delete orphans

I am having trouble deleting orphan nodes using JPA with the following mapping @OneToMany (cascade = CascadeType.ALL, fetch = FetchType.EAGER, …

java hibernate orm jpa jpa-2.0

setMaxResults for Spring-Data-JPA annotation?

I am trying to incorporate Spring-Data-JPA into my project. One thing that confuses me is how do I achieve setMaxResults(…

java spring jpa spring-data spring-data-jpa

How to test Spring Data repositories?

I want a repository (say, UserRepository) created with the help of Spring Data. I am new to spring-data (but not …

unit-testing jpa spring-data-jpa spring-data

use of entityManager.createNativeQuery(query,foo.class)

I would like to return a List of Integers from a javax.persistence.EntityManager.createNativeQuery call Why is the following …

java jpa ejb-3.0

How to return a custom object from a Spring Data JPA GROUP BY query

I'm developing a Spring Boot application with Spring Data JPA. I'm using a custom JPQL query to group by some …

java spring spring-mvc jpa repository

TransactionRequiredException Executing an update/delete query

Hi I am using hibernate JPA with spring and mongodb and i am running my application on Glassfish-4.0. My service …

java spring hibernate mongodb jpa