What is the factory pattern?
In computer programming, the factory is an object used to create other objects. In this case, objects apply to values, functions or data structures used in the code. The factory formula is a design pattern that relies on factories to create objects rather than to create objects directly. This makes it easy to change the code and maintain flexibility. It is generally used in object -oriented computer programming that uses objects to create programs and applications.
The factory has the method of any kind of object that can create. The method is basically a model. It consists of a set of instructions known as sub -programming, which occupies parameters usually provided by the user and issues a specific object. Most of this is behind the scenes without knowing anything about it.
When using a factory pattern, the program interacts with a common interface rather than directly with communication with classes. The class is used as a template to create objects. Each objectSpecific classes share the same behavior and basic attributes. Classes can be further divided into subclass, each inherits some attributes of the class to which they belong. The object of a particular class is known as an instance of this class.
For example, if a user wanted the program to create a square in a program or operating system that uses a factory formula, the program would announce the fact that the user needed an object that had four sides of the same length and four right angles. The factory would announce the shape of the shape that the shape was needed. Can pass some square parameters, such as an area that the user would like to cover a square.
The subclass would decide which class should be used. An example of the Square class would be returned to a factory that would pass it to the program for the first time. USAER would only see this information that was sent to the factory and returned to the factory. The internal functioning of the factory cannot be seenět.
The advantage of using a factory pattern is that it allows you to easily change the program. New types can be added to the factory pattern simply by adjusting a small piece of client code, usually not more than one line. Other programming formulas require the programmer to change the code at each location where the object is created.