application-expert

What problem does it solve?

Designing and implementing the Application Layer in Spring Boot, especially with complex transaction management and external service integrations, can lead to subtle bugs and architectural violations. This Skill automates the creation of UseCases, DTOs, and service orchestrators, ensuring strict adherence to transaction boundaries and Spring Proxy constraints.

Core Features & Use Cases

• UseCase & Command/Query Separation: Generates clear Port/In interfaces and distinct Command/Query DTOs for read and write operations.
• Strict Transaction Management: Enforces @Transactional best practices, preventing external API calls within transactions and respecting Spring Proxy limitations.
• Orchestration Patterns: Implements Facade, Manager, and StateManager patterns for managing complex business flows and ensuring atomic state changes.
• Use Case: When implementing a new business process that involves multiple domain aggregates and external services, use this Skill to design the Application Layer, ensuring proper transaction isolation and clear separation of concerns.

Quick Start

Use the application-expert skill to create a new PlaceOrderUseCase with a PlaceOrderCommand, ensuring transaction boundaries are respected and external calls are handled outside the transaction.