static readonly string s_systemDir = "UpdateClass"; // appended to SessionBase.BaseDatabasePath
static int Main(string[] args)
{
try
{
Trace.Listeners.Add(new ConsoleTraceListener());
VelocityDbSchema.Samples.UpdateClass.UpdatedClass updatedClassObject;
int ct1 = 0;
using (SessionNoServer session = new SessionNoServer(s_systemDir))
{
session.SetTraceDbActivity(Schema.SchemaDB);
session.BeginUpdate();
session.UpdateClass(typeof(VelocityDbSchema.Samples.UpdateClass.UpdatedClass)); // call this when you have updated the class since first storing instances of this type or since last call to UpdateClass
UInt32 dbNum = session.DatabaseNumberOf(typeof(VelocityDbSchema.Samples.UpdateClass.UpdatedClass));
foreach (var obj in session.AllObjects <VelocityDbSchema.Samples.UpdateClass.UpdatedClass>())
{
Console.Write(obj.ToString() + " has members: ");
foreach (DataMember member in obj.GetDataMembers())
{
Console.Write(member.ToString() + " ");
}
Console.WriteLine();
obj.UpdateTypeVersion(); // comment out if you DO NOT want to migrate this object to the latest version of the class
ct1++;
}
int ct2 = 0;
Database db = session.OpenDatabase(dbNum, true, false);
if (db != null)
{
foreach (var obj in db.AllObjects <VelocityDbSchema.Samples.UpdateClass.UpdatedClass>())
{
ct2++;
}
}
Debug.Assert(ct1 == ct2);
updatedClassObject = new VelocityDbSchema.Samples.UpdateClass.UpdatedClass();
session.Persist(updatedClassObject);
session.Commit();
MoveToDifferentFullClassName();
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
return(1);
}
return(0);
}
static int MoveToDifferentFullClassName()
{
try
{
using (SessionNoServer session = new SessionNoServer(s_systemDir))
{
session.SetTraceDbActivity(Schema.SchemaDB);
session.BeginUpdate();
session.ReplacePersistedType(typeof(VelocityDbSchema.Samples.UpdateClass.UpdatedClass), typeof(UpdateClass.UpdatedClass));
session.Commit();
}
using (SessionNoServer session = new SessionNoServer(s_systemDir))
{
session.Verify();
session.BeginRead();
foreach (var obj in session.AllObjects <UpdateClass.UpdatedClass>())
{
Console.Write(obj.ToString() + " has members: ");
foreach (DataMember member in obj.GetDataMembers())
{
Console.Write(member.ToString() + " ");
}
}
foreach (var obj in session.AllObjects <VelocityDbSchema.Samples.UpdateClass.UpdatedClass>())
{
throw new Exception("not expected");
}
session.Commit();
}
// change it back to original
using (SessionNoServer session = new SessionNoServer(s_systemDir))
{
session.SetTraceDbActivity(Schema.SchemaDB);
session.BeginUpdate();
session.ReplacePersistedType(typeof(UpdateClass.UpdatedClass).AssemblyQualifiedName, typeof(VelocityDbSchema.Samples.UpdateClass.UpdatedClass));
session.Commit();
}
using (SessionNoServer session = new SessionNoServer(s_systemDir))
{
session.Verify();
session.BeginRead();
foreach (var obj in session.AllObjects <VelocityDbSchema.Samples.UpdateClass.UpdatedClass>())
{
Console.Write(obj.ToString() + " has members: ");
foreach (DataMember member in obj.GetDataMembers())
{
Console.Write(member.ToString() + " ");
}
}
foreach (var obj in session.AllObjects <UpdateClass.UpdatedClass>())
{
throw new Exception("not expected");
}
session.Commit();
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
return(1);
}
return(0);
}
