I'm looking for an effective design pattern for our application's business layer, which relies heavily on database interactions for business logic decisions. We're currently using TCL and the database reads are complex, involving multiple joins and subqueries. These queries are scattered throughout the code, and many are unique and not reused. As we're transitioning to Typescript, I have a vision for our data objects and encapsulation. I've considered patterns like the Data Access Object and Repository, but those seem to work better for simpler CRUD operations. What alternatives can I use to effectively manage our complex reads and abstract database operations from business logic?
1 Answer
You're on the right track with your thoughts. While ORM and DAO patterns are efficient for simple object mapping, they can struggle with complex database queries. For your scenario, you could combine custom SQL queries for intricate data retrieval and use ORM for simpler operations, allowing you to maintain performance and simplicity. It's all about finding what works best—sometimes raw SQL reigns supreme when you need speed and complexity!
I totally agree! Since your team has a strong SQL background, leveraging raw SQL sounds like a smart move during this transition. Create a clean separation where complex queries exist separately, thus keeping your core logic tidy. Just remember to tweak those SQL queries for Typescript, ensuring they remain parameterized for safety.