What is factory design pattern with real time example?
What is factory design pattern with real time example?
As per example, if client passes 0, then it will return the instance of the Honda Car, if they pass 1, then it will return the instance of BMW car. In future, if a new car is launched e.g. Suzuki, there is no need to add anything on the client side. You just need to add one case for Suzuki to get the instance.
What is factory design pattern in C# with example?
Factory method is a creational design pattern which solves the problem of creating product objects without specifying their concrete classes. The Factory Method defines a method, which should be used for creating objects instead of using a direct constructor call ( new operator).
Where is factory design pattern used?
The factory design pattern is used when we have a superclass with multiple sub-classes and based on input, we need to return one of the sub-class. This pattern takes out the responsibility of the instantiation of a class from the client program to the factory class.
What is Abstract Factory pattern in C# with example?
Abstract Factory is a creational design pattern, which solves the problem of creating entire product families without specifying their concrete classes. Abstract Factory defines an interface for creating all distinct products but leaves the actual product creation to concrete factory classes.
Why do we use factory pattern?
Factory Method Pattern allows the sub-classes to choose the type of objects to create. It promotes the loose-coupling by eliminating the need to bind application-specific classes into the code.
What is the factory design pattern Why do we use factories How do you use this design pattern in your application?
The Factory Method Pattern is one of several Creational Design Patterns we often use in Java. Their purpose is to make the process of creating objects simpler, more modular, and more scalable. These patterns control the way we define and design the objects, as well as how we instantiate them.
Why is Factory pattern used?
Advantage of Factory Design Pattern Factory Method Pattern allows the sub-classes to choose the type of objects to create. It promotes the loose-coupling by eliminating the need to bind application-specific classes into the code.
What is the advantage of Factory Design Pattern C#?
The advantage of factory method pattern over factory pattern is that the client is abstracted from both the type of product and the type of factory used to create the product. Presuming that the product interface is invariant, this enables the factory to create any product type it deems appropriate.
What problem does factory pattern solve?
The factory pattern aims to solve a fundamental problem in instantiation – i.e., the creation of a concrete object of a class – in object-oriented programming. In principle, creating an object directly within the class that needs or should use this object is possible, but very inflexible.
What is the difference between factory method and abstract factory?
Java. 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.
What is the use of repository pattern in C#?
Repository pattern is one of the preferred patterns to apply in an application because it allows programmers to integrate all of the fundamental data operations related to an entity in one main class. Without this pattern, developers would need to create multiple classes for each entity with the same logic.
What problem does Factory Pattern solve?
What is factory pattern and how it is useful?
The Factory Method pattern is a design pattern used to define a runtime interface for creating an object. It’s called a factory because it creates various types of objects without necessarily knowing what kind of object it creates or how to create it.
Why do we use Factory Pattern?
When should we use factory method?
The Factory Method pattern is generally used in the following situations:
- A class cannot anticipate the type of objects it needs to create beforehand.
- A class requires its subclasses to specify the objects it creates.
- You want to localize the logic to instantiate a complex object.
Why do we need Factory Design Pattern?
What is difference between Factory pattern and Abstract Factory pattern in C#?
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.
Could you explain some benefits of repository pattern?
Using the Repository Pattern has many advantages:
- Your business logic can be unit tested without data access logic;
- The database access code can be reused;
- Your database access code is centrally managed so easy to implement any database access policies, like caching;
- It’s easy to implement domain logic;
Why should we use repository pattern?
The Repository pattern makes it easier to test your application logic. The Repository pattern allows you to easily test your application with unit tests. Remember that unit tests only test your code, not infrastructure, so the repository abstractions make it easier to achieve that goal.
What is factory used for?
A factory, manufacturing plant or a production plant is an industrial facility, often a complex consisting of several buildings filled with machinery, where workers manufacture items or operate machines which process each item into another.