# Prototype Pattern

> A design pattern that creates new objects by cloning a prepared template and applying overrides.

Record: `architecture:prototype-pattern`
Kind: pattern
Layer: [Design Patterns Core](https://banes-lab.com/records/layer/design-patterns-core.md)
Severity: contextual
Scope: object_creation, runtime
Canonical: https://banes-lab.com/ontology#architecture-prototype-pattern

Listed in [Architecture principles](https://banes-lab.com/api/records/architecture.md), after [Builder Pattern](https://banes-lab.com/records/architecture/builder-pattern.md) and before [Singleton Pattern](https://banes-lab.com/records/architecture/singleton-pattern.md).

## Repair

- Refactored by: Introduce Prototype, Add Clone Semantics
- Detected by: duplicate initialization flows
- Violated by: expensive repeated setup
- Measured by: initialization duplication/cost
- Enforced by: clone tests

## Requires

- [Cloneable Template Object](https://banes-lab.com/records/lexicon/cloneable-template-object.md)

## Reinforces

- [Runtime Extensibility](https://banes-lab.com/records/architecture/runtime-extensibility.md)

## Enables

- [Dynamic Object Creation](https://banes-lab.com/records/lexicon/dynamic-object-creation.md)

## Conflicts with

- [Complex Factory Hierarchies](https://banes-lab.com/records/lexicon/complex-factory-hierarchies.md)

## In tension with

- [Copy Semantics](https://banes-lab.com/records/lexicon/copy-semantics.md)

## Tensions

- [Prototype Pattern / Copy Semantics](https://banes-lab.com/records/tension/copy-semantics-prototype-pattern.md)

## Severity

- [contextual](https://banes-lab.com/records/vocabulary/severity-contextual.md)

## Category

- [Creational Patterns](https://banes-lab.com/records/architecture-category/creational-patterns.md)

## Force

- [Object creation](https://banes-lab.com/records/force/object-creation.md)

## Linked from

- [Runtime Discovery / Dynamic Binding](https://banes-lab.com/ontology/principles/architecture-category-runtime-discovery-dynamic-binding.md)
- [Creational Patterns](https://banes-lab.com/ontology/lexicon/lexicon-category-creational-patterns.md)
- [Severity levels](https://banes-lab.com/ontology/schema/the-vocabulary-severity.md)
- [The forces](https://banes-lab.com/ontology/schema/the-forces.md)
- [The resolutions](https://banes-lab.com/ontology/schema/the-resolutions.md)