Creational Patterns

Facade

The Facade pattern provides a simplified interface to a complex system of classes, objects, and subsystems. It abstracts away the intricacies of the underlying components, offering clients a higher-level, easier-to-use entry point. Essentially, it’s an “entry point” object that encapsulates the interaction …

Immutable Object

creational best practice

An Immutable Object is an object whose state cannot be modified after it is created. Any operation that appears to modify the object actually returns a new object with the desired changes, leaving the original object untouched. This is achieved by making all of the object’s fields final (or equivalent) and …

Multiton

creational

The Multiton pattern is a variation of the Singleton pattern. While a Singleton restricts the instantiation of a class to only one instance, a Multiton allows a limited number of instances. This is useful when multiple instances are needed to represent different, but related, states or configurations without allowing …

Prototype

creational object-creation

The Prototype pattern is a creational design pattern that empowers you to create new objects by cloning existing ones, offering a flexible alternative to traditional instantiation methods. Instead of specifying new object creation through classes, it delegates the creation responsibility to a prototype instance. This …

Builder

creational

The Builder pattern is a creational design pattern that lets you construct complex objects step-by-step. It allows customization of the object being built without making the construction process itself complex and unmanageable. The pattern separates the construction of a complex object from its representation, so the …

Flyweight

creational

The Flyweight pattern is a structural design pattern that aims to minimize memory usage or computational costs by sharing as much data as possible between similar objects. It achieves this by separating the object state into intrinsic and extrinsic parts. Intrinsic state is shared and immutable, held within the …

Row Data Gateway

creational data access

The Row Data Gateway pattern provides an interface to a database table. It encapsulates all the direct database access logic and exposes methods to perform operations on the table rows as objects. The gateway maps rows from one or more tables to objects, effectively presenting a higher-level, object-oriented view of …

Singleton

GOF Creational

Singleton design pattern enables us to guarantee unicity and a single entry point for services and accesses. Tipically it requires the standard contructor to be hidden in order to avoid direct instantiation, but modern frameworks use this pattern in conjunction with other creational patterns in order to ease the …