public override void Init()
{
XpoDefault.DataLayer = null;
XpoDefault.Session = null;
var Args = new SchemaMismatchEventArgs(this, SchemaStatus.None);
PrepareDictionary();
//Check if the schema requires update https://www.devexpress.com/Support/Center/Question/Details/Q245466/determining-if-schema-needs-to-be-updated
if (XpoDefault.DataLayer == null)
{
try
{
using (var CheckSchemaDataLayer = new SimpleDataLayer(Dictionary, CreateSchemaCheckingDataStore()))
{
//HACK new way to compare schema https://www.devexpress.com/Support/Center/Question/Details/T562023/xpo-how-to-detect-of-chnage-structure-of-database-by-new-change-in-db-model
var types = Dictionary.Classes.Cast <XPClassInfo>().Where(ci => ci.IsPersistent).ToArray();
var Result = CheckSchemaDataLayer.UpdateSchema(true, types);
if (Result == UpdateSchemaResult.FirstTableNotExists)
{
OnSchemaMismatch(this, Args);
}
//HACK the old version of checking the schema https://www.devexpress.com/Support/Center/Question/Details/T189303/xpo-how-to-check-if-db-schema-needs-to-be-changed-without-changing-it
//using (var session = new Session(CheckSchemaDataLayer))
//{
// session.UpdateSchema();
// //session.CreateObjectTypeRecords();
//}
}
Args.Handled = true;
}
catch (SchemaCorrectionNeededException)
{
OnSchemaMismatch(this, Args);
}
//catch (DevExpress.Xpo.DB.Exceptions.SchemaCorrectionNeededException)
//{
// OnSchemaMismatch(this, Args);
//}
if (Args.Handled)
{
workingStore =
XpoDefault.GetConnectionProvider(ConnectionString, AutoCreateOption.SchemaAlreadyExists);
DataLayer = new ThreadSafeDataLayer(Dictionary, workingStore);
}
}
}
//public override void CreateSchema()
//{
// base.CreateSchema();
//}
protected override void OnSchemaMismatch(IDataSpaceProvider source, SchemaMismatchEventArgs e)
{
base.OnSchemaMismatch(source, e);
}