/// <summary>
/// Responsible for creating a new dbContext with given <see cref="DbContextOption.Mode"/>
/// </summary>
/// <typeparam name="T">dbContext of type {T} to be created.</typeparam>
/// <param name="mode"><see cref="DbContextOption.Mode"/> to create dbContext with.</param>
/// <param name="isolationLevel"><see cref="IsolationLevel"/> to create dbContext with.</param>
/// <param name="dbTransaction">create a dbContext with external transaction</param>
/// <param name="sqlConnection">create a dbContext with existing sql connection</param>
/// <returns>true if new dbContext created else false.</returns>
internal bool CreateNewDbContextIfNotExists <T>(DbContextOption.Mode mode, IsolationLevel?isolationLevel, DbTransaction dbTransaction, DbConnection sqlConnection) where T : DbContext, IAmbientDbContext, new()
{
if (DbContextCollection.GetDbContextByType <T>() != null)
{
return(false);
}
//Creating a new DbContext Type
T currentDbContext;
if (dbTransaction != null && sqlConnection != null)
{
currentDbContext = Activator.CreateInstance(typeof(T), sqlConnection, false) as T;
}
else
{
currentDbContext = Activator.CreateInstance(typeof(T)) as T;
}
if (currentDbContext != null)
{
currentDbContext.Mode = mode;
if (mode == DbContextOption.Mode.Read)
{
currentDbContext.Configuration.AutoDetectChangesEnabled = false;
}
if (dbTransaction != null)
{
currentDbContext.Database.UseTransaction(dbTransaction);
DbContextCollection.Add(currentDbContext, null);
}
else
{
if (isolationLevel.HasValue)
{
IsolationLevel = isolationLevel.Value;
var transaction = currentDbContext.Database.BeginTransaction(isolationLevel.Value);
DbContextCollection.Add(currentDbContext, transaction);
}
else
{
var transaction = currentDbContext.Database.BeginTransaction();
DbContextCollection.Add(currentDbContext, transaction);
}
}
}
return(true);
}
internal T GetDbContextByType <T>() where T : DbContext, IAmbientDbContext, new()
{
return(DbContextCollection.GetDbContextByType <T>());
}
