Design Pattern Initial Concept
This springcavaj – Design Pattern page briefly describes the Initial Concept of Design Patterns.
This guide will provide a deep understanding of Design Patterns for designing and architecting an application.
What is a Creational Design Pattern?
Creational Design Patterns deal with object creation mechanisms, trying to create objects in a manner suitable to the situation. These patterns abstract the instantiation process, making the system independent of how its objects are created, composed, and represented.
Usages of Creational Design Pattern
- Object Creation Control – Helps in controlling the creation of objects in complex situations.
- Encapsulation of Instantiation Logic – This encapsulates the logic that might vary, providing flexibility in choosing the object instantiation mechanism.
- Flexibility – Enables adding new types of objects without altering existing code.
Advantages of Creational Design Pattern
- Improved Flexibility and Reusability – By separating object creation, creational patterns make a system more flexible in deciding which objects need to be created for a given scenario.
- Reduced Complexity – They reduce the complexity of object creation and instantiation.
- Encapsulation – They encapsulate the instantiation logic, making the codebase easier to manage and extend.
Disadvantages of Creational Design Pattern
- Increased Complexity – Adding these patterns can introduce additional complexity due to the creation of more classes and interfaces.
- Overhead – This may add unnecessary overhead in simple applications where direct object creation might be more straightforward.
Benefits of Creational Design Pattern
- Design and Architecture Clarity – Abstracting the instantiation logic, makes the design and architecture clearer and more modular.
- Enhanced Code Maintenance – The separation of concerns makes it easier to maintain and update the codebase.
- Promotes Use of Interfaces – Encourages programming to an interface, which leads to more robust and scalable code.
Types of Creational Design Patterns
- Singleton – Ensures only one instance of a class is created.
- Factory Method – Creates objects without specifying the exact class of object that will be created.
- Abstract Factory – Creates families of related or dependent objects.
- Builder – Separates the construction of a complex object from its representation.
- Prototype – Creates new objects by copying an existing object.
Common Problems Faced
- Overuse: Using creational patterns unnecessarily can complicate the code.
- Inappropriate Use: Selecting the wrong pattern for the problem at hand can lead to suboptimal solutions.
- Misunderstanding: Developers may misunderstand or misapply these patterns, leading to incorrect implementations.
