Freaks City

Entity Mapping package com.example.domain; import jakarta.persistence.*; @Entity @Table(name = "t_account") public class Account { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long accountId; @Column(nullable = false, unique = true) private String login; @Column(nullable = false) priv ...

When working with Hibernate in projects, we often need generic database operation classes. While Tk MyBatis provides convenient utilities with methods that only update non-null values, empty strings are still processed as valid updates. This article presents a utility solution for converting empty strings to null values, along with a custom ann ...

System Overview This enterprise-grade Office Automation (OA) solution integrates advanced management concepts with digital workflows. By automating administrative processes, it enables paperless operations, reduces manual errors, and enhances organizational efficiency through systematic management of office activities. Technical Architecture Th ...

Field Access Strategy When using field access in JPA, annotations are placed directly on the entity fields. The persistence provider accesses these fields directly through reflection, bypassing any getter and setter methods that may exist. The field access strategy offers two annotation styles: Style One @Id private Long employeeId; Style Two ...

In affiliate rebate platforms—where high-volume transactions, real-time commission tracking, and user activity logs are common—database efficiency directly impacts system scalability and responsiveness. Optimizing both schema design and data access patterns is essential to maintain performance under load. Schema Design Best Practices A well-str ...

This discussion focuses on Hibernate annotation-based multi-table join queries, particularly addressing parameter configuration when primary and foreign key field names differ between tables. Development Environment and Scope Annotation-based Hibernate multi-table join implementations Using IntelliJ IDEA development environment Covers scenario ...

Core Spring Boot Annotations @SpringBootApplication This is a meta-annotation that combines three essential annotations: @Configuration @EnableAutoConfiguration @ComponentScan The @ComponentScan directive enables Spring Boot to detect and register beans automatically. The following example demonstrates the typical application entry point: pac ...