When I add the above dependency and compile my project, I get an “illegal character” error for Turkish characters. My problem is same as here but I didn’t understand how to solve it in Spring Boot. I tried the solutions but they didn’t work. I would be glad if you help. Answer Days lat…
Tag: hibernate
HQL query checking each item of list against multiple requirements
I want to filter a query based on the contents of a list on the entity. I do not simply want to check if something is in this list, I want to have a ‘predicate’ as in functional programming, It’s been challenging to research since ‘predicate’ is something else in hql. so basicall…
Does @Transactional preserves the session open , if yes – why do I have 3 DB calls?
Here is my simple method – just returns DTOs I call it in @SpringBootTest with a @Transactional annotation. Does it perform all calls in a single session? I though it does, because of the @Transactional, but the problem is that I have 3 calls to DB. I thought that Hibernate First level cache makes sure …
JPA createQuery where condition does not work
I am trying to use JPA to fetch records from database. However I am able to insert records indatabse and even get all the records using createQuery method of class EntityManager. But in below case I am not getting why the condition in where clause is not working. Please help me figure it out. POJO class : DAO…
How to show the query made by Hibernate 5.5.6
It’s my day 3 with Hibernate. I’m using Hibernate 5.5.6 pom.xml I think my hibernate.cfg.xml is also correct: App.java Yes, the data is inserted properly but I’m not able to see the query: console Please point out my mistake. Answer You should change the property to
GenerationTarget encountered exception accepting Error executing DDL
I am trying to create create a table using jpa entity in SQL Server but when i run the application I am receiving error in creating the table by hibernate. I saw some other solutions as well but they were for mysql as the problem was with the hibernate dialect. I tried different dialect but none of them worke…
Hibernate simply adding elements to manytomany from JSON
I want to add elements in my manytomany association via a request without loading each added element. I am using a custom join table. [Code will be added at the bottom] So for example this is the JSON I get: So there is one HomeworkMaterial. If I send this as POST to the server nothing happens (as expected). …
Non-Redundant Hibernate List-Mapping (OneToMany)
In a database there are “pastries”. A pastry has zero, one, or many allergens. Hence I’m using a list in Pastry with @OneToMany relation. Now, with this way of managing the relations, we get redundant entries, as for each pastry a new entry with the same allergen is created: Our current solu…
Using Java records as JPA embeddables
I want to use Java records as embeddable objects with JPA. For example I want to wrap the ID in a record to make it typesafe: But If I try to persist it with Hibernate 5.4.32 I get the following error: So it looks like Hibernate would treat the record Id like an entity, although it is an @Embeddable. The
Seeding Initial Data – Spring Boot with data.sql
data.sql is executed before JPA entities are created and it creates the error that the table is not found. can anyone help me with it? I have seen the same question in this link Spring Boot – Loading Initial Data but the question is not answered. Answer This is a normal and wanted behaviour from Springb…