/// <summary>
/// Testable AllMainRows
/// </summary>
/// <typeparam name="M"></typeparam>
/// <param name="db">The database.</param>
/// <param name="filter">encrypt filter</param>
/// <returns></returns>
public static IEnumerable <Main> AllMainRows <M>(ASP_DBEntities db, Func <byte[], byte[]> filter = null)
where M : class
{
var all = from m in db.Main
select m;
return(from m in all.AsEnumerable()
where m.clsid == Clsid.Id(typeof(M)) &&
m.GetInstance <M>(filter) != null // could be encrypted
select m);
}
/// <summary>
/// Testable SaveMain
/// </summary>
/// <typeparam name="M"></typeparam>
/// <param name="db">The database.</param>
/// <param name="instance">The instance.</param>
/// <param name="session">The session.</param>
/// <param name="filter">encrypt filter</param>
/// <returns></returns>
public static Guid SaveMain <M>(ASP_DBEntities db, M instance, Guid?session, Func <byte[], byte[]> filter = null)
where M : class
{
var query = from m in db.Main
where m.session == session
select m;
var main = query.FirstOrDefault();
if (main == null)
{
main = new Main();
main.clsid = Clsid.Id(instance);
db.Main.Add(main); // INSERT
}
main.SetInstance(instance, filter);
db.SaveChanges();
return(main.session); // get the new session guid set by the db on insert
}
/// <summary>
/// Returns the (unencrypted!) literal INSERT string of the loaded object
/// for manually exporting session dumps.
/// </summary>
/// <returns>
/// SQL INSERT string
/// </returns>
public string InsertSQL()
{
Trace.Assert(this.main != null, "Explicit serialization with SetInstance(controlStorage.Main) required beforehand");
var clsid = Clsid.Id(this.mainInstance); // throws if no Clsid attribute present
// Let the future consumer SQL Server encode the string representation of the byte[]
string hex = String.Empty;
var query = "SELECT CONVERT(VARCHAR(MAX), @main, 1) AS [hex]";
using (var db = new ASP_DBEntities())
{
var param = new SqlParameter("main", this.main);
hex = db.Database.SqlQuery <String>(query, param).FirstOrDefault();
}
// Format according to get copy-pasted into Management Studio
return(String.Format("INSERT INTO Main (clsid, main) SELECT '{0}', {1}\n" +
"SELECT session FROM Main WHERE mainid = @@IDENTITY\n",
clsid, hex));
}
