What is the difference between dependency injection and factory pattern?


What is the difference between dependency injection and factory pattern?

Dependency Injection is more of a architectural pattern for loosely coupling software components. Factory pattern is just one way to separate the responsibility of creating objects of other classes to another entity. Factory pattern can be called as a tool to implement DI.

Is dependency injection a pattern?

Dependency Injection (DI) is a design pattern used to implement IoC. It allows the creation of dependent objects outside of a class and provides those objects to a class through different ways. Using DI, we move the creation and binding of the dependent objects outside of the class that depends on them.

What is the dependency injection in C#?

Dependency Injection (or inversion) is basically providing the objects that an object needs, instead of having it construct the objects themselves. It is a useful technique that makes testing easier, as it allows you to mock the dependencies.

What is the advantage of dependency injection in C#?

Dependency Injection (DI) is a software design pattern that allows us to develop loosely coupled code. DI is a great way to reduce tight coupling between software components. DI also enables us to better manage future changes and other complexity in our software. The purpose of DI is to make code maintainable.

What is factory pattern in C#?

Factory method is a creational design pattern which solves the problem of creating product objects without specifying their concrete classes. Factory Method defines a method, which should be used for creating objects instead of direct constructor call ( new operator).

How many types of dependency injection are there?

three types
There are three types of dependency injection — constructor injection, method injection, and property injection.

What is the disadvantage of dependency injection?

Disadvantages of Dependency Injection: Dependency injection creates clients that demand configuration details to be supplied by construction code. This can be difficult when obvious defaults are available. Dependency injection can make code difficult to trace (read) because it separates behaviour from construction.

Is Singleton a dependency injection?

The use of singletons and dependency injection is not mutually exclusive. A singleton can implement an interface, therefore can be used to satisfy a dependency on another class. The fact that it is a singleton does not force every consumer to obtain a reference through it’s “GetInstance” method/property.

What is a singleton pattern C#?

One of the commonly used design patterns in C# is the singleton pattern. This design pattern uses a single instance of a class to enable global access to the class members. Instead of having several instances of the same class, singletons have just one instance, and provide convenient access to that single instance.

What is difference between abstract factory and Factory Method design patterns?

The main difference between a “factory method” and an “abstract factory” is that the factory method is a single method, and an abstract factory is an object. The factory method is just a method, it can be overridden in a subclass, whereas the abstract factory is an object that has multiple factory methods on it.

Is IoC a factory pattern?

The conclusion that i have come up with is that an IoC container is an architectural pattern, not a design pattern. In other words, no class should be aware of its presence and the container itself should be used at the application layer to stitch up all components.

What is difference between dependency inversion and dependency injection in C#?

Dependency Injection is an implementation technique for populating instance variables of a class. Dependency Inversion is a general design guideline which recommends that classes should only have direct relationships with high-level abstractions.

Which type of dependency injection is best?

Setter Injection is the preferred choice when a number of dependencies to be injected is a lot more than normal, if some of those arguments are optional than using a Builder design pattern is also a good option. In Summary, both Setter Injection and Constructor Injection have their own advantages and disadvantages.

What are the three types of dependency injection?

There are three common ways of injecting dependencies:

  • Constructor Injection: Dependency is passed to the object via its constructor that accepts an interface as an argument.
  • Method Injection: A.k.a. interface-based injection.
  • Property Injection: A.k.a. setter injection.