I am facing with 2 problems: N + 1 query and Out Of Memory (OOM). I solved OOM by paging and lazy loading: But when I use lazy loading, N + 1 query happened. So I try to use EntityGraph as https://www.baeldung.com/spring-data-jpa-named-entity-graphs. But as my researches and local test, EntityGraph always do eager loading for NamedAttributeNode field – association field,
Tag: spring-data-jpa
Why has javax.persistence-api been replaced by jakarta.persistence-api in spring data jpa starter?
I’ve recently started to learn spring boot, data jpa. As I can see from this, the spring boot data jpa starter uses jakarta.persistence-api instead of javax.persistence-api: …
How to inject spring beans into the hibernate envers RevisionListener
I am using Spring 5.1 and Hibernate 5.3.9 including hibernate-envers. I don’t know how to inject spring beans into the hibernate envers custom RevisionListener. I have tried Of course the class is included in the @ComponentScan packages resolution. A problem is that myService is not injected into the listener. In the hibernate-envers documentation: https://docs.jboss.org/hibernate/orm/current/userguide/html_single/Hibernate_User_Guide.html#envers-basics As of Hibernate Envers 5.3, dependency
Adding Spring Dependency Injection in JavaFX (JPA Repo, Service)
I have a java FX basic application which has a simple Scene(a form). I have a Mysql Db and I am using Spring JPA (spring data jpa i.e repository/entities) to interact with the same. Now, since we know that javaFx has some lifecycle hooks namely: init() start() and stop(). Let’s say I want to insert data in Database using JPA
How to use custom data base dialect in spring data?
I need to avoid some bug in db2 dialect in hibernate. I use spring data + gradle (several modules) + kotlin I created my custom dialect And try to add it to application.properties But spring data continuous using DB2Dialect I tried the same code but using java + maven + the same spring data and it’s works. So, i have
JPA/SpringBoot Repository for database view (not table)
I’m attempting to create a JPA entity for a view. From the database layer, a table and a view should be the same. However, problems begin to arise and they are two fold: When attempting to setup the correct annotations. A view does not have a primary key associated with it, yet without the proper @javax.persistence.Id annotated upon a field,
Not able to add JPA dependency into spring-boot project
I am trying to add JPA Maven dependency to already created spring-boot project but I am getting following error: Error: Could not find or load main class com.kame.demo.DemoApplication When I remove …
Spring Pageable does not translate @Column name
I have Entity object : @Entity(name = “table”) public class SomeEntity { @Id @Column(name = “id_column_name”) public final BigDecimal entityId; @Column(name = “table_column_name”) …
How to update only the incoming fields in a model using spring data jpa?
I am using Spring data jpa for persistence. Say, I have to update a model. This model has ‘n’ number of fields along with a primary Key. Considering above json as a representation of my model, I want to update only those fields which are incoming in the json (primary key is Id which will always be there). Is there
Can’t register an custom Entity in Spring project
Hello I have custom entity which has fields like name, description, date ant others, I created EventRepository and EventServiceImpl. Also i have a model RegisterEvent. Event entity: @Entity @Table (…