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Questions tagged [unit-of-work]

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2answers
93 views

How to get ORM (Ef Core) Entities follow a DDD style . Which is the best approach?

I am considering mutliple options to face a problem. I want to develop software following DDD style. The problem arise when I have to define my entities and I am working with Entity Framework Core, ...
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3answers
110 views

Tracking state on entity and unit-of-work pattern

In my web app I have a long running operation that is processing some entity in the background. The state of this process should be visible to the clients. During the processing the UI should show ...
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0answers
62 views

Should a UnitOfWork contain every Repository?

I'm trying to get the Repository/UnitOfWork pattern figured out. We're working on a project with EntityFramework and our DBContext contains 200+ tables. Right now our approach is to inject whatever ...
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0answers
2k views

Unit Of Work with multiple database context

I have created an application (net core 2 & ef core) with Unit Of Work and Generic repository pattern. I used to have one database context but due to some business logic I had to create a second ...
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2answers
496 views

Unit of work + repository pattern + dependency injection

I am in the process of refactoring and improving a codebase. One of the major missing features is transactional safety and certain errors arising from each repository having its own DbContext. The ...
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1answer
478 views

Should unit of work create repository?

Our "unit of work" class has a method which takes a class type and creates a repository: public IRepository<TEntity> GetRepository<TEntity>() where TEntity : class { ...
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0answers
984 views

Proper implementation of Repository Pattern with MVVM in WPF

I am currently refactoring a WPF application that is built on the principles of the Repository Pattern. It uses Entity Framework as its ORM, and is Database First. Each of those entities is wrapped by ...
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0answers
29 views

How to handle sharing of same context in Repositories-Unit of Work when using dependency injection

I have a problem that knocks out me. Background: I am inside the devolpment of a WinForms app that is not layered. Almost all the events are handled in the Form class. I have multiple IRepositories. ...
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0answers
42 views

Repository Unit of Work object type reference

I'm confused on how to best use this pattern. I have a project that uses Devart's Entity Framework for Oracle. The context is provided by them. So I have an interface IRepository and a single ...
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0answers
279 views

Putting UnitofWork handler in the Request Model for DDD with Clean architecture?

I'm rearchitecting a system in Python, using SQLAlchemy for the data mapping layer, and the Zope Component Architecture for dependency injection and interface declaration. I am in the process of ...
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1answer
404 views

Making UnitOfWork testable

I'm in the process of refactoring legacy code. Unfortunately it is a WebForms application with very tight coupling and smelly code. Currently access to database is inside models which looks something ...
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1answer
376 views

Do I need to use the Unit of Work pattern with a many to many relationship?

Please see the DDL below: create table Person (ID identity not null, varchar(name), Gender char(1), dateofbirth datetime, primary key (id)) create table PersonOffer (PersonID int not null references ...
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2answers
5k views

Should I mock Repository and Unit Of Work for Unit Testing?

I have read this article: https://www.gaui.is/how-to-mock-the-datacontext-linq/ Since this article is almost 4 years old I have no hope that in article's comments my question will be answered so I ...
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2answers
867 views

Asp.Net Mvc 5 / Web Api 2 unit testing data access layer

Let's say I have IRepository interface implemented by Repository class(uses database context to implement IRepository methods). And IUnitOfWork interface implemented by UnitOfWork class using ...
4
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1answer
2k views

Is Unit of Work valid under a service pattern?

I've been studying design patterns. I've learned about Repositories, Unit Of Work, Dependency Injection, MVC. I'm now learning about Service Layer pattern. I'm trying to grasp the utility purpose of ...
4
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1answer
1k views

Implementing unit-of-work for multiple storage types

I'm trying to implement the unit-of-work pattern for mutliple storage types like the windows registry, a database or the app.config but I cannot figure out how to do it. All examples I find use Entity ...
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2answers
722 views

Best design pattern for two specific scenarios, the first one fits neatly into a Unit of Work(UoW) pattern

I have a question about what the best design pattern to use would be. I have 2 specific scenarios, the first one fits neatly into a Unit of Work(UoW) pattern. The second is a little bit more fiddly. ...
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0answers
130 views

Should I design my Unit-Of-Work like this?

I am using .net and Entity-Framework (EF) on the back end and I would like some advice on this Unit-Of-Work (UoW) implementation. Should I create a unit of work with one entity and multiple services? ...
3
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1answer
227 views

A “sort of” Units of Unit of Work

I've read Unit of Work pattern and tons of MVC/EF Unit of Work examples but what I'm trying to do is encapsulate multiple unit-of-work into a large set. Maybe this pattern already exists somewhere, ...
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0answers
91 views

Can NHibernate's ISession be considered as implementation of unit of work pattern?

I am debating this with myself. Does NHibernate's ISession offer a proper and correct unit of work if used without a transaction? In absence of a transaction, every SQL command would be wrapped by the ...
7
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2answers
707 views

How to decide what forms the System Under Test

Ok, so we started with the initial version of "The Art Of Unit Testing" and we do unit tests for classes where every test covers one aspect of one method. This has the drawback of high maintenance ...
0
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1answer
312 views

Sharing core repository and object mapping logic between Unit of Work methods

I'm wondering if there is a better way to do this or if I'm doing some anti-pattern here. Like I say in the subject, I'm trying to share repository calls and object mapping logic between Unit of Work ...
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1answer
214 views

How is the UnitOfWork pattern related to Monadic programming?

Looking over the definition of the Unit of Work pattern it seems very much like what a programmer would get if they implemented a Monad such as an IO or Transaction Monad. What makes the unit of work ...
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1answer
928 views

MockRepository vs Test Database for Unit Testing

Before starting, this question is not the same as this one. Comming from a PHP background, my experience is in CakePHP, which is a framework that supports Unit Testing by setting up a local test ...
5
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1answer
4k views

Unit of Work Concurrency, how is it handled

I am reading some information about the Unit of Work pattern. There is one thing that is not very clear for me: what will happen when you request a couple of records on a thread (1) and another thread ...
0
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1answer
182 views

How to save entities relations using unit of work pattern

I use Unit of work pattern to commit all new, dirty, deleted entities to the DB (using a db_mapper). Example of entities are: Student and Class So Student->registerDirty() will add this entity to ...
4
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2answers
2k views

Should I have separate units of work for each EF bounded context?

I have some EF bounded contexts like follows public class BoundedContext_1 : DbContext { IDbSet<A> As { get; set; } IDbSet<B> Bs { get; set; } } public class BoundedContext_2 : ...
4
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2answers
526 views

Communication/Updates between units of works/entity framework contexts, colliding with user changes

I'm developing a WPF application using Entity Framework for my database communication. The application has a hierarchy of tabs where each tab has a db context. Each tab allows the user to view some ...
2
votes
1answer
664 views

Would this be a correct way to use the Repository pattern in ASP .NET MVC application implementing Entity Framework?

This ASP .NET MVC application implements Entity Framework. I've declared the repositories in the DbContext like this: public class CompanyDbContext : DbContext { // constructor goes here ...
1
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1answer
717 views

Are there any concerns with using a static read-only unit of work so that it behaves like a cache?

Related question: How do I cache data that rarely changes? I'm making an ASP.NET MVC4 application. On every request the security details about the user will need to be checked with the area/...
5
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4answers
1k views

Unit of Work pattern

I have gone through many articles and I am still confused whether to use the Unit of Work pattern or not. I use generic repositories (Repository Pattern) but if my understanding of the UOW pattern is ...
2
votes
2answers
6k views

Unit of work/repository pattern with dependency injection advice

I'm developing a series of repository classes and a UnitOfWork class (plus its IUnitOfWork interface of course). I'm using Castle Windsor, which injects dependencies via constructors. My business ...
193
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9answers
110k views

Why shouldn't I use the repository pattern with Entity Framework?

During a job interview, I was asked to explain why the repository pattern isn't a good pattern to work with ORMs like Entity Framework. Why is this the case?
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3answers
3k views

How to use the unit of work and repository patterns in a service oriented enviroment

I've created an application framework using the unit of work and repository patterns for it's data layer. Data consumer layers such as presentation depend on the data layer design. For example a CRUD ...
16
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2answers
8k views

Relationship between Repository and Unit of Work

I am going to implement a repository, and I would like to use the UOW pattern since the consumer of the repository could do several operations, and I want to commit them at once. After read several ...
4
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3answers
5k views

Unit of work principle is causing a problem in MVC3 application

I am implementing a website using MVC3, Entity Framework 4.1 and Repositoty pattern, Unit of work principle. But I am facing a big problem while implementing this. I have developed a static ...
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2answers
2k views

Why is the Unit of Work pattern considered fast and efficient when working with an ORM?

In working with Doctrine 2 I came across the following paragraph. In fact, since Doctrine is aware of all your managed entities, when you call theflush() method, it calculates an overall ...
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1answer
6k views

Hooking up a Business Layer and Repository using Unit of Work Pattern

My question is similar to this one on Stack Overflow: What is the correct way to use Unit of Work/Repositories within the business layer? Scenario: .Net solution IRepository used to retrieve objects ...
6
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1answer
127 views

Data services methods naming

When you work with ORM which implement UnitOfWork pattern (NHibernate's Session, Entity Framework's ObjectContext, etc.), there are two types of data services methods: those which save/commit changes ...