Dependency Injection vs Factory Pattern
Below are the differences between Dependency Injection Pattern and Factory Pattern:
|
Aspect |
Dependency Injection (DI) |
Factory Pattern |
|---|---|---|
|
Purpose |
Manages object dependencies by providing them externally. |
Manages object creation by encapsulating instantiation logic. |
|
Dependency Management |
Focuses on providing dependencies to classes, promoting loose coupling and dependency inversion. |
Encapsulates object creation, promoting encapsulation and abstraction. |
|
Implementation Mechanism |
Implemented using constructor injection, setter injection, or interface injection. |
Implemented using factory methods or abstract factories. |
|
Flexibility |
Provides flexibility by allowing dependencies to be easily swapped or changed at runtime. |
Provides flexibility by allowing different object creation strategies to be used without modifying client code. |
|
Testability |
Facilitates easier unit testing as dependencies can be replaced with mock objects. |
May require more effort for testing, as instantiation logic is encapsulated within factory classes. |
|
Use Cases |
Suitable for managing dependencies in complex systems where modularity and testability are key concerns. |
Suitable for scenarios where object creation logic needs to be encapsulated or varied based on runtime conditions. |
|
Dependency Resolution |
Externalizes the resolution of dependencies to an external source, such as a dependency injection container or configuration file. |
Resolves dependencies internally within factory classes based on predefined rules or conditions. |
Dependency Injection vs Factory Pattern
In coding, there are special ways to organize our work called “design patterns.” Two important ones are Dependency Injection (DI) and the Factory Pattern. They help make our work easier by keeping things neat and separate. In this article, we will see the differences between them and, when to use each.
Important Topics to Understand the differences between Dependency Injection and Factory Pattern
- What is the Dependency Injection (DI) Pattern?
- What is the Factory Pattern?
- Dependency Injection vs Factory Pattern
- Use Cases of Dependency Injection Pattern
- Use Cases of Factory Pattern
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