The Repository Pattern is used for separating business logic from interactions with the underlying data sources. In this video, you will learn in more detail what Repository Pattern is and when to apply it. This section of the tutorial prepares you for upcoming videos where we'll review code that was refactored to apply the repository pattern.
- Since the Gang of Four initially…defined 23 design patterns,…many others have been created to build on their foundation.…One common addition is the repository pattern.…A Microsoft MSDN website, it describes a repository pattern…as separating business logic from interactions…with the underlying data sources.…In short, using a repository allows programmers…to create an abstraction between…an application and its data layer.…In a lot of programs the business logic will need…to access data from databases,…web services, or some other data storage.…
The problem is, is directly accessing the data…can cause issues like duplicated code,…programming errors, or coupling code.…Making it difficult to test.…In order to avoid these,…developers use the repository pattern.…This helps facilitate unit testing…and it improves the code's maintainability.…
Author
Reynald Adolphe
Released
5/31/2016In this course, developer and technologist Reynald Adolphe explains the purpose and effective use of eight design patterns, including six Gang of Four design patterns and two .NET patterns. Gang of Four patterns fall under three categories: structural, creational, and behavioral. Reynald helps you learn about select patterns from each category. He describes each pattern and demonstrates how programmers can leverage them in real-world applications.
- Factory Method
- Abstract Factory
- Singleton pattern
- Decorator pattern
- Iterator pattern
- Observer pattern
- Repository pattern
- Unit of Work pattern
Skill Level Intermediate
Duration
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Introduction
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Welcome1m 28s
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1. Overview
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Design patterns explained1m 20s
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The need for design patterns1m 31s
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Design pattern categories1m 35s
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2. Factory Method
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Factory pattern overview1m 36s
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Code the Factory pattern4m 16s
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3. Abstract Factory
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4. Singleton Pattern
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Singleton pattern overview1m 44s
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Thread safety2m 42s
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5. Decorator Pattern
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Decorator pattern overview2m 54s
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Concrete Component code2m 37s
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Concrete Decorator code2m 42s
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6. Iterator Pattern
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Aggregate setup2m 7s
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Iterator setup and execution4m 53s
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7. Observer Pattern
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Observer pattern overview2m 23s
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Concrete Subject code3m 23s
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8. Repository Pattern
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MVC Project setup8m 14s
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Create a Generic Repository2m 16s
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9. Unit of Work Pattern
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Convert to Unit of Work3m 53s
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Conclusion
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Next Steps31s
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Video: Repository pattern overview