The purpose of the Converter Pattern is to provide a generic, systematic way of bidirectional conversion between corresponding data types. This allows for a clean, decoupled implementation where types are unaware of each other. Additionally, the Converter pattern supports bidirectional collection mapping, minimizing boilerplate code.
The Data Mapper pattern aims to create an abstraction layer between the database and the business logic, allowing them to evolve independently. It maps data from the database objects to in-memory data structures and vice versa, minimizing direct dependencies between the application's core logic and the underlying database structure. This decoupling is essential in promoting maintainability and flexibility in Java programming.
The Identity Map design pattern in Java aims to ensure that each object gets loaded only once by keeping every loaded object in a map, enhancing database performance and memory management.
Metadata Mapping Design Pattern is designed to manage the mapping between database records and Java objects in a way that keeps the database schema and object model decoupled and manageable.
