Learn about the Command pattern from a conceptual level and how it is used in the framework.
- [Instructor] The Command pattern is another one … of these design patterns that exists in the Spring framework … we don't use a lot that are behavior based. … In the Spring framework … there's really two distinct use cases. … First, it's seen with Runnable instances. … Things like the CommandLineRunner, … where you're going to execute a Runnable command … from the base class itself. … The second use case that we see is all the more often seen, … and that's in our MVC layer. … And there's actually an AbstractCommandController … that you can use in Spring MVC … that implements this command pattern. … And the idea here is that in an MVC world, … often you're going to execute these commands against controls, … and you don't want to manipulate the individual controls. … That's going to lead us into what the pattern actually is. … The whole gist of the command pattern is that it provides … an abstraction layer for these request processing scenarios. … Think about a shopping cart. … You have a very common pattern …
Author
Released
3/22/2019- The patterns of the Spring framework
- Creational patterns in Spring
- The adapter and decorator pattern in action
- Structural patterns in Spring
- The repository pattern in action
- The observer, command, and mediator patterns
Skill Level Advanced
Duration
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Introduction
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What you should know1m 28s
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1. Design Patterns and Spring
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What are design patterns2m 28s
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Gang of Four3m 38s
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2. Creational Patterns in Spring
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The Factory pattern4m 39s
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Factory pattern in action5m 38s
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The Builder pattern2m 55s
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The Singleton pattern4m 1s
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Singleton pattern in action4m 55s
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The Prototype pattern4m 36s
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Prototype pattern in action4m 59s
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3. Structural Patterns in Spring
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The Adapter pattern5m 13s
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Adapter pattern in action5m 12s
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The Decorator pattern3m 26s
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Decorator pattern in action4m 39s
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The Proxy pattern4m 10s
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4. Operational Patterns in Spring
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The Repository pattern3m 13s
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Repository pattern in action5m 12s
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The Template pattern4m 34s
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5. Other Framework Patterns in Spring
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The Observer pattern4m 49s
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The Command pattern3m 50s
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The Mediator pattern3m 15s
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The Interpreter pattern3m 10s
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Conclusion
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Next steps3m 27s
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Video: The Command pattern