Developer uses Generic DAO pattern to cut repetitive CRUD code in Java and vanilla JS

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A developer maintaining business platforms without heavy frameworks like Spring Boot or React has shared how a Generic DAO pattern lets him add new entities in minutes rather than hours. Instead of writing separate DAO, DTO, forms, and validation logic for each entity, he defines a single schema that drives the entire stack automatically. On the backend, a parameterized Java DAO handles persistence for all entities, while a JavaScript ENTITY_CONFIG object generates forms, validators, and tables on the frontend. The approach draws on established patterns — Generic DAO, DTO, and schema-driven architecture — documented in Core J2EE Patterns over 20 years ago and seen in tools like Django Admin and Rails scaffolding. The developer argues this method requires no new frameworks or licenses, making it especially practical for small-business systems with tight budgets.

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