pattern-prototype

To clone complex domain objects without class coupling, implement a prototype interface with a clone() contract on each entity. This allows code to duplicate aggregate roots or value objects without referencing their specific concrete classes directly.

Use the prototype pattern for object duplication when spinning up new tenant configurations or seeding tests with slightly altered domain objects. It avoids expensive reinitialization by copying existing complex objects while preserving private state and invariants.

The best way to deep copy nested aggregates and private state is to implement dedicated clone methods on your domain models. This ensures deterministic deep copies that include all private data, creating ready-to-use clones for new contexts.

Yes, the prototype pattern works for duplicating aggregate roots by invoking a clone implementation instead of rebuilding fields manually. It copies all fields, including nested aggregates and private data, to create ready-to-use clones for new contexts.

Yes, you can optionally implement a registry alongside clone methods on domain models to ensure deterministic deep copies. This approach guarantees that all fields, including nested aggregates and private data, are consistently copied.