I’m exploring options for being able to store specific addresses (home, work etc.) for multiple entities, and having a single table that holds all addresses, probably with some kind of discriminator per record. The primary keys for all tables are UUIDs. I’m using Spring Boot 2.3.6 and JPA/Hibernat…
Tag: hibernate
How to print in console in Spring MVC application(Dynamic web project)?
I have a Dynamic Web app in Eclipse which has a normal Controller, Entity and a DAO class. I am using Hibernate to get the data from the database and then displaying it in JSP page. But when I try to use System.out.print(); in Controller class to see weather my data is being fetched from the database it is no…
Panache with MongoDB find distinct
I have documents with “tags” arrays as properties. Now I want to query all distinct tag-items. Solution in mongo shell: which gives me: But how can I achieve the same result with Panache? The PanacheMongoEntity does not offer a specific distinct method. Nor do i know how to use the find method to …
How should I persist a PanacheEntity with data coming from a Websocket message?
I’m trying to persist the following entity when receiving a message from the client via Websocket: The following persist works, when receiving a POST request: However, the following code freezes when it reaches the persist line. The message.getPenguin() method is returning an actual Penguin reference (t…
is there any way to fetch data from many to many tables using spring without infinite json format?
user entity board entity When I try to fetch data using findAll method I get infinite json object. For example when I fetch users I have set of boards inside it I have set of users and inside it I have set of boards… etc. How can I fetch user with his boards and boards with its users ? Answer
Java spring Hibernate : Error when trying to implement a many to one relationship
I am trying to implement a many to one relationship with a user being able to have many posts. The used database is postgresql. The error I have is the following and is caused by Hibernate: alter table post drop constraint FKl1p5mt95jngsghp4vtaw04egh : These are the 2 classes I use : and The error occurs at t…
Create and use database function with JPA
I want to create and immediatly use a database function in a single sql call. As an example, the following works fine in PostgreSQL SQL Editor : But when i try to use it with JPA : I get the following error : How could i make this work ? Answer You’re trying to execute two queries at once. You
JPA Entity that has a OneToMany relationship and want to use DTO
I have an entity called “Review” that has a OneToOne relationship with a “User” entity and a OneToMany relationship with a “ReviewStage” entity. I have implemented a DTO pattern so, I also have ReviewDTO which is actually what is being sent to the UI. I am using mapstruct t…
Unsatisfied dependency through ‘sessionFactory’; No qualifying bean of type ‘org.hibernate.SessionFactory’ available
I am creating a spring-mvc and hibernate webapp. I am trying to test text read in the book by creating project (hence using xml config). This type of question is asked before but I can’t get my project to work with answers offered. I get following error when I hit the end-point : Here is @Configuration …
printing TypedQuery in console
How to sysout the TypedQuery in eclipse console. Am trying with .toString() and its not working Please find my java code below. Answer You need to enable logging for the the following categories: So a log4j configuration could look like: The first is equivalent to hibernate.show_sql=true legacy property, the …