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Welcome to Software Development on Codidact!

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Activity for Marc.2377‭

Type On... Excerpt Status Date
Comment Post #280662 I deleted it myself due to poor reception. Never liked that site anyway. [Here's an archived version](https://web.archive.org/web/20210209211132/https://softwareengineering.stackexchange.com/questions/421833/how-best-to-implement-a-data-access-layer-for-this-architecture).
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about 3 years ago
Comment Post #280670 I am aware of the XY nature of this question, but asked it anyway because I wanted to know whether this could be done, since the entire thing is an exercise to get a better grasp of the language and its capabilities. I'm satisfied with the response.
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about 3 years ago
Comment Post #280670 My final goal is to have an interface to be able to use EF Core in my application services layer while enforcing that whatever custom DbContext-like implementations an user might want to implement in the future provides the same set of functionality in order to require minimal changes to the applicat...
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about 3 years ago
Comment Post #280666 Good point. I think I have one use case for updating both the relational and document datastores in one atomic operation, but for the majority of cases you are correct.
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about 3 years ago
Comment Post #280670 I think I got it, if you may have a look at my answer below, tell me if that makes sense and is correct.
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about 3 years ago
Edit Post #280671 Initial revision about 3 years ago
Answer A: Declaring interface members with generic return types: "The type parameter [generic type] cannot be used with type arguments"
I believe an implementation of the answer by Peter Taylor above would be: ```cs public override EntityEntry Add([NotNullAttribute] TEntity entity) where TEntity : class { return Add(entity, base.Add); } public TEntityEntryTEntity Add([NotNullAttribute] TEntity entity, [NotNull...
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about 3 years ago
Comment Post #280670 ... and/or, how the implementation of this interface should be done.
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about 3 years ago
Comment Post #280670 Thanks. Could you give an example of what the factory method implementation would look like?
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about 3 years ago
Comment Post #280665 @FoggyFinder is that so I can enforce new user-created context types to provide the same set of methods.
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about 3 years ago
Comment Post #280665 @FoggyFinder yes, the interface must be applicable to the method already defined in the base class, which in this case is part of the framework.
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about 3 years ago
Comment Post #280666 ... and when some queries will be made to both databases, sharing a `TransactionScope`.
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about 3 years ago
Comment Post #280665 ... then the only valid implementation would be: `public EntityEntry Add<TEntity>(TEntity entity) where TEntity : class` - but I want the implementation that already exists in the base class (`DbContext`) to be valid. And its signature returns `EntityEntry<TEntity>`.
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about 3 years ago
Comment Post #280665 @FoggyFinder I tried, but then in my class that inherits from `DbContext` I get: `Error CS0738 'EntityFrameworkContext' does not implement interface member 'IDbContextable<EntityFrameworkContext, EntityEntry>.Add<TEntity>(TEntity)'. 'DbContext.Add<TEntity>(TEntity)' cannot implement 'IDbContextable<E...
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about 3 years ago
Comment Post #280666 Thanks. Does your approach change in any way in the case where the secondary database is non relational?
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about 3 years ago
Edit Post #280665 Initial revision about 3 years ago
Question Declaring interface members with generic return types: "The type parameter [generic type] cannot be used with type arguments"
I'm trying to write an interface to define the set of operations I expect my repositories' Unit of Work implementations to have, and I want this interface to be fulfilled by EF Core's `DbContext` class. So far this is what I got: (I know the name is awful, suggestions accepted): ```cs public i...
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about 3 years ago
Comment Post #280662 Posted a more elaborate/specific version of this to Software Engineering SE: [How best to implement a Data Access layer for this architecture?](https://softwareengineering.stackexchange.com/q/421833/183949)
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about 3 years ago
Edit Post #280662 Post edited:
about 3 years ago
Edit Post #280662 Post edited:
about 3 years ago
Edit Post #280662 Initial revision about 3 years ago
Question How to separate DB query logic from the application other than implementing a repository on top of an ORM?
I've been doing a lot of reading on implementing the repository pattern in C# projects and found controversy, or shall I say some strong criticism, made by seemingly very smart people with previous experience with the pattern, saying that one is better off not implementing a repository on top of an O...
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about 3 years ago
Edit Post #278924 Post edited:
copy-edit
over 3 years ago