The Java Persistence API (JPA) is a Java specification for accessing, persisting, and managing data between Java objects/classes and a relational database.
I have my persistence.xml with the same name using TopLink under the META-INF directory. Then, I have my code …
java jpa persistence toplinkI am trying run a spring-boot application which uses hibernate via spring-jpa, but i am getting this error: Caused by: …
java hibernate maven jpa spring-bootI am using JPA in my project. I came to a query in which I need to make join operation …
java jpaIn this code, how to generate a Java class for the composite key (how to composite key in hibernate): create …
java hibernate jpa orm composite-keyWhy am I getting this exception? package com.domain.idea; import javax.persistence.CascadeType; import javax.persistence.Entity; import javax.…
hibernate jpa orm identifier hibernate-annotationsHibernate throws this exception during SessionFactory creation: org.hibernate.loader.MultipleBagFetchException: cannot simultaneously fetch multiple bags This is my test …
java hibernate jpa one-to-many bagI think I misunderstood the meaning of cascading in the context of a @ManyToOne relationship. The case: public class User { @…
java jpa one-to-many cascade many-to-oneJava has the transientkeyword. Why does JPA have @Transient instead of simply using the already existing java keyword?
java jpa jakarta-ee annotations transientWell, I searched Google and found many results, but none of them was able to answer my problem. So, here …
java jpa spring-data-jpa