public interface IUnitOfWorkManager : IDisposable { IUnitOfWork Begin(); void End(); void Complete(); bool IsDisposed { get; } }
public class EntityFrameworkUnitOfWorkManager : IUnitOfWorkManager { private readonly DbContext _context; public EntityFrameworkUnitOfWorkManager(DbContext context) { _context = context; } public IUnitOfWork Begin() { return new EntityFrameworkUnitOfWork(_context); } public void End() { // No-op } public void Complete() { _context.SaveChanges(); } public bool IsDisposed => _context == null; public void Dispose() { _context.Dispose(); } }In this example, EntityFrameworkUnitOfWorkManager is a concrete implementation of IUnitOfWorkManager that uses an instance of DbContext to manage transactions with the database. It returns a new instance of EntityFrameworkUnitOfWork when the Begin method is called, and saves changes to the database when the Complete method is called. The End method is a no-op, as there is no specific action required to end a unit of work in Entity Framework. Finally, the Dispose method is called when the object is no longer needed or when it goes out of scope.