/// <summary>
/// Encapsulates several repository calls with one DbContext. Any exceptions thrown inside will end up rolling back all repository transactions.
///
/// To change a repository's context to use unitOfWork's localContext, make sure to call
/// <c>rRegistrar.ConvertContextOfRepository(myRepo).ToUse(localContext);</c>
/// </summary>
///
/// <param name="repoWork">Asynchronous lambda to do the repository transactions</param>
public async Task RunAsync(RepoWorkAsync repoWork)
{
RepositoryRegistry rRegistry = new RepositoryRegistry();
RepositoryRegistryRegistrar rRegistrar = new RepositoryRegistryRegistrar(rRegistry);
ConcertoDbContext localContext = null;
try
{
using (var scope = serviceProvider.CreateScope())
{
localContext = scope.ServiceProvider.GetService <ConcertoDbContext>();
localContext.ChangeTracker.QueryTrackingBehavior = QueryTrackingBehavior.NoTracking;
using (var trans = localContext.Database.BeginTransaction())
{
try
{
await repoWork(rRegistrar, localContext);
trans.Commit();
}
catch (Exception e)
{
trans.Rollback();
throw e;
}
}
}
}
catch (Exception e)
{
throw e;
}
finally
{
/**
* Convert All DbContexts of all repositories registered in registry
*/
rRegistry.GetRepositories().ForEach(unitOfWorkRepository => unitOfWorkRepository.RevertToPreviousDbContext());
rRegistry.Clear();
}
}
public void RevertToPreviousDbContext()
{
this.Context = PrevDbContext;
PrevDbContext = null;
}
public void UseContext(DbContext context)
{
PrevDbContext = this.Context;
this.Context = (ConcertoDbContext)context;
}
// For EntityFrameworkCore, extend from this ctor
public BaseRepository(IDbContextFactory dbContextFactory)
{
Context = (ConcertoDbContext)dbContextFactory.GetContext();
}
public void ToUse(ConcertoDbContext context)
{
repositoryRegistry.AddRepo(repository);
repository.UseContext(context);
}
