What is unit of work pattern in Entity Framework?
The unit of work class serves one purpose: to make sure that when you use multiple repositories, they share a single database context. That way, when a unit of work is complete you can call the SaveChanges method on that instance of the context and be assured that all related changes will be coordinated.
What is the unit of work pattern?
Unit of Work is the concept related to the effective implementation of the repository pattern. non-generic repository pattern, generic repository pattern. Unit of Work is referred to as a single transaction that involves multiple operations of insert/update/delete and so on.
What is unit of work .NET core?
Meanwhile, a Unit of Work acts as a business transaction. In other words, the Unit of Work will merge all the transactions (Create/Update/Delete) of Repositories into a single transaction. All changes will be committed only once. They will be rolled back if any transaction fails to ensure data integrity.
Is DbContext a unit of work?
The DbContext class is based on unit of work pattern which includes all the DbSet entities. The DbContext class manages in-memory database operations on these entities and later saves all these updates as one transaction into database.
What is work unit?
In the case of work (and also energy), the standard metric unit is the Joule (abbreviated J). One Joule is equivalent to one Newton of force causing a displacement of one meter. In other words, The Joule is the unit of work.
Is unit of work necessary?
Not necessarily. EF already provides the unit of work pattern for you. The only reason to still have a unit of work is if you: want to include non-EF-datasources in an atomic data operation.
How does unit of work relate to NHibernate?
Since a UoW (Unit of Work) is basically a wrapper around a NHibernate session object I’ll need to open such a session whenever I start a new UoW. But to be able to get such a session NHibernate has to be configured and a NHibernate Session Factory has to be available.
Do you need repository and unit of work with Entity Framework?
After working again on codebase where Entity Framework Core was used through repository and unit of work patterns I decided to write eye-opener post for next (and maybe even current and previous) generations about what Entity Framework has to offer in the light of these to patterns.
How does the start method in NHibernate work?
The method start creates and returns an instance of a UnitOfWorkImplementor class which implements the interface IUnitOfWork. As you can see then interface IUnitOfWork inherits from IDisposable. So we can define that the business transaction is ended when the UoW is disposed.
How is the session factory created in NHibernate?
The session factory is created on demand, that is when first needed. At the same time this property getter method accesses the previously defined Configuration property which in turn triggers the configuration of NHibernate (if not already done). The last missing piece is the implementation of the CreateSession method which now is trivial