protected virtual void ConnectToDatabase(DbSettings dbSettings)
{
try {
switch (this.Status)
{
case EntityAppStatus.Created:
this.Init();
break;
case EntityAppStatus.Shutdown:
return;
}
ActivationLog.WriteMessage(" Connecting to data source {0}.", dbSettings.DataSourceName);
dbSettings.CheckConnectivity(rethrow: true);
var dbModel = GetCreateDbModel(dbSettings);
var db = new Database(dbModel, dbSettings);
var ds = new DataSource(dbSettings.DataSourceName, db);
this.DataAccess.RegisterDataSource(ds);
this.DataSourceEvents.OnDataSourceChange(new DataSourceEventArgs(db, dbSettings.DataSourceName, DataSourceEventType.Connecting));
CheckUpgradeDatabase(db);
LogService.Flush();
this.Status = EntityAppStatus.Connected;
this.DataSourceEvents.OnDataSourceChange(new DataSourceEventArgs(db, dbSettings.DataSourceName, DataSourceEventType.Connected));
ActivationLog.WriteMessage("Connected to {0}.", dbSettings.DataSourceName);
} finally {
LogService.Flush();
}
}
protected virtual void InitApp()
{
Status = EntityAppStatus.Initializing;
SetupLogFileWriters();
ActivationLog.WriteMessage("Initializing EntityApp {0}.====================================", this.AppName);
this.AppEvents.OnInitializing(EntityAppInitStep.Initializing);
//Check dependencies
foreach (var mod in this.Modules)
{
var depList = mod.GetDependencies();
foreach (var dep in depList)
{
var ok = Modules.Any(m => dep.IsTypeOrSubType(m));
if (!ok)
{
ActivationLog.LogError($"Module {mod.Name} requires dependent module {dep} which is not included in the app.");
}
}
}
CheckActivationErrors();
//Build model
var builder = new EntityModelBuilder(this);
builder.BuildModel();
CheckActivationErrors();
//Notify modules that entity app is constructed
foreach (var module in this.Modules)
{
module.Init();
}
//init services; note that service might be registered more than once, under different interface
var servList = this.GetAllServices().Distinct().ToList();
for (int i = 0; i < servList.Count; i++)
{
var service = servList[i];
var iServiceInit = service as IEntityServiceBase;
if (iServiceInit != null)
{
iServiceInit.Init(this);
}
}
//complete initialization
this.AppEvents.OnInitializing(EntityAppInitStep.Initialized);
foreach (var module in this.Modules)
{
module.AppInitComplete();
}
builder.CheckErrors();
Status = EntityAppStatus.Initialized;
ActivationLog.WriteMessage("App {0} initialized.", this.AppName);
}
} //method
public void CheckUpgradeDatabase(Database db)
{
//Invoke upgrade
// Update db model
if (db.Settings.UpgradeMode == DbUpgradeMode.Never)
{
ActivationLog.WriteMessage("Data source upgrade mode set to Never, skipping db upgrade.");
return;
}
// upgrade
var updateMgr = new DbUpgradeManager(db, ActivationLog);
var upgradeInfo = updateMgr.UpgradeDatabase(); //it might throw exception
// _events.OnDataSourceStatusChanging(new DataSourceEventArgs(dataSource, DataSourceEventType.Connected));
}
