Software Engineering

Questions tagged [strategy-pattern]

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Modify method behaviour at runtime

I have a scenario where user has multiple filters in a web application and a displayed list of items. In the gui it has multiple FilterGUI that he/she can tune interacting in the browser (these are ...
0
votes
3answers
180 views

Advantages of strategy design pattern versus simple if-else

I am not clear on what advantage does strategy pattern offers over simple if-else. Example of poor code //poor code that we all can agree is not the way to go ----- main class ----- String ...
1
vote
1answer
111 views

Strategy Design Pattern vs Inheritance

I have to write a code where i have send some data (call it List of cases) using one of two integration tools (Jitterbit, Mulesoft), with possibility of adding more tools in future. Integration tool ...
2
votes
1answer
104 views

Is it allowed to include the composition in the compositor in the Strategy Pattern

I have a range of different animals in my zoo such as turtles, birds etc. As they all share a common trait such as either swimming, flying etc., I thought a strategy pattern would be appropriate to ...
11
votes
6answers
4k views

Strategy vs Factory design pattern

I am new to design patterns and working my way through the Factory Method and Strategy patterns. I understand that Factory is a creational pattern and Strategy is behavioral but I struggle to ...
3
votes
3answers
208 views

How to use strategy pattern more effectively?

The problem is the following: I have to download a set of JSON files and convert them to a certain format. There are 5 output formats (Let's call them A, B, C, D, E) and all of the downloaded json ...
2
votes
1answer
104 views

What's the difference between Strategy Pattern and IoC

In both the Strategy Pattern and in Inversion of Control you can exchange parts of an object that allows scalability and easy-to-exchange parts. I am referring to this and this Both use an interface ...
10
votes
5answers
3k views

Can we completely replace inheritance using strategy pattern and dependency injection?

For example: var duckBehaviors = new Duckbehavior(); duckBehaviors.quackBehavior = new Quack(); duckBehaviors.flyBehavior = new FlyWithWings(); Duck mallardDuck = new Duck(DuckTypes.MallardDuck, ...
2
votes
2answers
265 views

Strategy pattern and different implementation

I am still learning Design Patterns and I have a situation in my hand. I am developing a simple employee management Python program. An employee can be a Developer, Senior Developer, Lead Developer, ...
2
votes
2answers
368 views

Strategy/domain object responsibilities

Assume we are in the world of car rental application :) Let's say that I have 3 types of cars with 2 categories of price: Car type Price category ------------------------------ Sport ...
3
votes
2answers
972 views

DDD - delegate business rule of domain object to external service

Situation: I am implementing DDD in my first project and I would like to clarify how to correctly implement strategy pattern (in my case check if API token is active). This is a business rule of ...
2
votes
2answers
434 views

How to implement Strategy pattern for combined behaviours

Strategy pattern solves the necessity of applying a certain algorithm/behaviour depending on the object's type itself. So you can iterate over a bunch of similar objects and call the same function ...
1
vote
3answers
258 views

Strategy Pattern and inheriting boilerplate functionality

I've read that when using the Strategy Pattern, you should stick to composition rather than inheritance. But does this mean that any inheritance at all is bad practice? If there is functionality to be ...
1
vote
2answers
1k views

Implementing strategy pattern via configuration

In my current problem domain, a number of problems seem to lend themselves quite well to the strategy pattern. I have a common, high-level process - let's say it's a sales process - and regardless of ...
2
votes
1answer
1k views

Does my use of the strategy pattern violate the fundamental MVC pattern in iOS?

I'm about to use the 'strategy' pattern in my iOS app, but feel like my approach violates the somehow fundamental MVC pattern. My app is displaying visual "stories", and a Story consists (i.e. has @...