java – HibernateOptimisticLockingFailureException when saving an entity in Spring MVC with JPA

The bounty expires in 4 days. Answers to this question are eligible for a +50 reputation bounty. FrancescoDS wants to draw more attention to this question. In my Java project (Spring MVC) I have the following entities: public class TariffeBaseComposizioni implements Serializable { private static final long serialVersionUID = 1L; @Id @Basic(optional = … Read more

.net 5 – The entity type ‘IdentityUserLogin’ requires a primary key to be defined. If you intended to use a keyless entity type, call ‘HasNoKey’ in

I’m attempting to seed data for my API. I do have JWT authentication setup as well. I have to remove my original migration of the seeded data in order for the program to work. I found it would be helpful to already have data in the API when users interact with it. I”m just unsure … Read more

Design a CRUD Web Service for Inheritable Entity

Introduction Sometimes we need to develop a web service that provides CRUD (Creport, Rlead, Update, and Delete) operations for an entity that supports inheritance. However, the traditional layered architecture (controller layer, service layer, and repository layer) is not enough to have a clean and scalable code. Indeed, if we put the business logic and mapping … Read more

c# – System.NotSupportedException: ‘Collection is read-only.’ When Reading Entity From DbContext

I have an aggregate root in my domain model named Employee. it has 3 list of different domain objects like below: public class Employee: EntityBase, IAggregateRoot { public long PersonnelCode { get; private set; } public string FirstName { get; private set; } public string LastName { get; private set; } public string NationalCode { … Read more

Best Practices in Data Discovery: Building Search for a Data Discovery Platform

Image by flashmovie from freepik The efficiency of data discovery depends on the user-friendliness of the UI and the features integrated into it to make it easier for users to look up the data they need. This article explores significant components of a user-friendly UI. In addition, it looks into specific measures that can be … Read more

php – Retrieve table from Database or Entity and iterate inside JavaScript block

I’m new to symfony and web development in general. I need to retrieve my entity information and iterate my table instead of the statically added list “items” and I don’t know how to get it inside JavaScript block. This is in order to implement a dynamic pagination. I hope I was clear. This is the … Read more