Do You Have Enough Experience in Using the ‘Strategic Design Pattern’ as a Business Entrepreneur?

Strategic Design Patterns are the software designs which are used to solve the common problems. There are common situations where classes differ only in their behavior. Therefore, it is prudent to isolate the algorithms into separate classes in order to have the ability to select different algorithms at runtime.

Algorithm

Define a family of algorithms, encapsulate each one, and make them interchangeable. Strategy lets the algorithm vary independently from client to client who uses it. Define an interface and then each algorithm should implement in separate classes. All those classes should inherit from the interface. Context class should have the reference of the interface.

Context will have access to the algorithm through the interface. Therefore, the implementation can be selected at run time, by changing the object.

Open/closed principle by strategic pattern

According to the strategic pattern, the behavior of a class should not be inherited. Instead, they should be encapsulated using the interfaces. This is compatible with the open/closed principle (OCP), which proposes that classes should be open for extension, but closed for modification.

The strategic pattern uses composition instead of inheritance. In the strategic pattern, behaviors are defined as the separate interfaces and the specific classes that implement these interfaces. This allows better decoupling between the behavior and the class that uses the behavior. The behavior can be changed without breaking the classes that use it, and the classes can switch between behaviors by changing the specific implementation used without requiring any significant code changes. Behaviors can also be changed at run-time as well as at design-time.

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