private static DbContextScope <T> CreateDbContextScope <T>(DbContextOption.Mode mode, IsolationLevel?isolationLevel, DbTransaction dbTransaction, DbConnection connection) where T : DbContext, IAmbientDbContext, new()
{
var dbContextScope = new DbContextScope <T>(mode, isolationLevel, dbTransaction, connection);
dbContextScope.Initialize();
return(dbContextScope);
}
internal static ContextData CreateContextData <T>(DbContextOption.Mode mode, IsolationLevel?isolationLevel, DbTransaction transaction, DbConnection sqlConnection) where T : DbContext, IAmbientDbContext, new()
{
Debug.WriteLine("Trying to create context data");
var contextData = new ContextData();
contextData.CreateNewDbContextIfNotExists <T>(mode, isolationLevel, transaction, sqlConnection);
return(contextData);
}
internal DbContextScope(DbContextOption.Mode mode, IsolationLevel?isolationLevel, DbTransaction dbTransaction, DbConnection sqlConnection)
{
_mode = mode;
_dbTransaction = dbTransaction;
_sqlConnection = sqlConnection;
_isolationLevel = isolationLevel;
ContextKey = new ContextKey();
}
public DbContextScope <T> CreateNonAmbientDbContextScope <T>(DbContextOption.Mode mode,
IsolationLevel?isolationLevel) where T : DbContext, IAmbientDbContext, new()
{
var dbContextScope = new NonAmbientDbContextScope <T>(mode, isolationLevel, null, null, new AmbientDbContextHouseKeeper());
dbContextScope.Initialize();
return(dbContextScope);
}
internal NonAmbientDbContextScope(DbContextOption.Mode mode,
IsolationLevel?isolationLevel,
DbTransaction dbTransaction,
DbConnection sqlConnection,
AmbientDbContextHouseKeeper ambientDbContextHouseKeeper)
: base(mode, isolationLevel, dbTransaction, sqlConnection)
{
_ambientDbContextHouseKeeper = ambientDbContextHouseKeeper;
}
/// <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 static ContextData CreateContextData <T>(DbContextOption.Mode mode, IsolationLevel isolationLevel) where T : DbContext, IAmbientDbContext, new()
{
return(CreateContextData <T>(mode, isolationLevel, null, null));
}
private static DbContextScope <T> CreateDbContextScope <T>(DbContextOption.Mode mode, IsolationLevel?isolationLevel) where T : DbContext, IAmbientDbContext, new()
{
return(CreateDbContextScope <T>(mode, isolationLevel, null, null));
}
