The Factory Method design pattern is one of the "Gang of Four" design patterns that describe how to solve recurring design problems to design flexible and reusable object-oriented software, that is, objects that are easier to implement, change, test, and reuse. You can find an example on our Singleton pattern page. Relations with Other Patterns. Up to this point it sounds a lot like the Factory Method pattern, the difference being the fact that for the Factory the palette of prototypical objects never contains more than one object. To name the method more descriptively, it can be named as Factory and Product Method. The prototype pattern is a creational design pattern in software development. Factory pattern is one of the most used design patterns in Java. Factory design pattern is used when we have a super class with multiple sub-classes and based on input, we need to return one of the sub-class. Prototype: creation through delegation. avoid the inherent cost of creating a new object in the standard way when it is … Finally, replace the direct calls to the subclasses’ constructors with calls to the factory method of the prototype registry. Pros and Cons. Factory Method: creation through inheritance. This type of design pattern comes under creational pattern as this pattern provides one of the best ways to create an object. To name the method more descriptively, it can be named as Factory and Product Method. This pattern involves implementing a prototype interface which tells to … The Prototype Design Pattern falls under the category of Creational Design Pattern.. What is the Prototype Design Pattern? Hence you don’t need a Creator class hierarchy at all. Prototype pattern falls under Creational Pattern of Gang of Four (GOF) Design Patterns in .Net.It is used to create a duplicate object or clone of the current object. Factory Method pattern In this pattern, the client (or consumer) asks the Creator (or factory) for a specific type of object from a class hierarchy. The Prototype design pattern is the one in question. In this article, I am going to discuss the Prototype Design Pattern in C# with examples. The Prototype pattern uses the class itself, especially the derived class for self duplication action. Please read our previous article where we discussed the Fluent Interface Design Pattern in C# with examples. The factory design pattern describes an object that knows how to create several different but related kinds of object in one step, where the specific type is chosen based on given parameters. Prototype is a creational design pattern that lets you copy existing objects without making your code dependent on their classes. It is used when the type of objects to create is determined by a prototypical instance, which is cloned to produce new objects. Many designs start by using Factory Method (less complicated and more customizable via subclasses) and evolve toward Abstract Factory, Prototype, or Builder (more flexible, but more complicated). Prototype Design Pattern in C# with Examples. It … Factory Method lets a class defer instantiation to subclasses. This type of design pattern comes under creational pattern as this pattern provides one of the best ways to create an object. Prototype design pattern is used when the Object creation is a costly affair and requires a lot of time and resources and you have a similar object already existing. So, it is this aspect it appears to be a lot like the Factory Method pattern. Discussion. Disadvantages of Prototype Design Pattern Prototype pattern refers to creating duplicate object while keeping performance in mind. This type of design pattern comes under creational pattern as this pattern provides one of the best ways to create an object. Factory design pattern is one of the Creational design pattern. Factory pattern is used to introduce loose coupling between objects as the factory will take care of all the instantiation logic hiding it from the clients. I was reading design patterns from a website There I read about Factory, Factory method and Abstract factory but they are so confusing, am not clear on the definition. Problem Say you have an object, and you want to create an exact copy of it. It allows an object to create customized objects without knowing their class or any details of how to create them. Often, designs start out using Factory Method (less complicated, more customizable, subclasses proliferate) and evolve toward Abstract Factory, Prototype, or Builder (more flexible, more complex) as the designer discovers where more flexibility is needed. According to definitions Design Patterns: Factory Method, Factory Method - Define an interface for creating an object, but let subclasses decide which class to instantiate. .NET Optimized code in C#. This pattern is used to: avoid subclasses of an object creator in the client application, like the factory method pattern does. This pattern take out the responsibility of instantiation of a class from client program to the factory class. It allows an object to create customized objects without knowing their class or any details of how to create them. All other patterns (and much more) are available in our .NET Design Pattern Framework 4.5. The Prototype design pattern is the one in question. Factory Method lets a class defer instantiation to subclasses. Comparison with Factory Pattern Prototype pattern allows an object to create customized objects without knowing their class or any details of how to create them.