Child list is intermittently null

BarryC posted on Monday, March 23, 2009

I am getting a strange intermittent error when testing one of my business objects with NUnit. 

The Template business object has two editable child Lists: NotificationList and SignOffList.  Sometimes when a new Template object is created these child lists are null instead of a new empty list.  However, this only happens intermittently.  Other times, the tests will run fine.

Does anybody have any ideas what might be causing this?  I am using Csla 3.6.0.

using System;

using System.Linq;

using Csla;

using Csla.Data;

using Csla.Security;

using Csla.Validation;

namespace Templates

[Serializable()]

public partial class Template : Csla.BusinessBase<Template>

#region Business Properties and Methods

// Register properties

private static PropertyInfo<int> IDProperty = RegisterProperty<int>(typeof(Template), new PropertyInfo<int>("Id"));

private static PropertyInfo<string> NameProperty = RegisterProperty<string>(typeof(Template), new PropertyInfo<string>("Name"));

private static PropertyInfo<int> GroupIDProperty = RegisterProperty<int>(typeof(Template), new PropertyInfo<int>("GroupID"));

private static PropertyInfo<string> DescriptionProperty = RegisterProperty<string>(typeof(Template), new PropertyInfo<string>("Description"));

private static PropertyInfo<LockInfoList> LockInfoListProperty = RegisterProperty<LockInfoList>(typeof(LockInfoList), new PropertyInfo<LockInfoList>("LockInfoList"));

private static PropertyInfo<NotificationList> NotificationListProperty = RegisterProperty<NotificationList>(typeof(Template), new PropertyInfo<NotificationList>("NotificationList"));

private static PropertyInfo<SignOffList> SignOffListProperty = RegisterProperty<SignOffList>(typeof(Template), new PropertyInfo<SignOffList>("SignOffList"));

private byte[] _lastChanged;

[System.ComponentModel.DataObjectField(true, true)]

public int ID

get { return GetProperty<int>(IDProperty); }

public string Name

get { return GetProperty<string>(NameProperty); }

set { SetProperty<string>(NameProperty, value); }

public int GroupID

get { return GetProperty<int>(GroupIDProperty); }

set { SetProperty<int>(GroupIDProperty, value); }

public string Description

get { return GetProperty<string>(DescriptionProperty); }

set { SetProperty<string>(DescriptionProperty, value); }

// Child properties

public NotificationList NotificationList

get

if (!FieldManager.FieldExists(NotificationListProperty))

LoadProperty<NotificationList>(NotificationListProperty, NotificationList.NewNotificationList());

return GetProperty<NotificationList>(NotificationListProperty);

public SignOffList SignOffList

get

if (!FieldManager.FieldExists(SignOffListProperty))

LoadProperty<SignOffList>(SignOffListProperty, SignOffList.NewSignOffList());

return GetProperty<SignOffList>(SignOffListProperty);

public LockInfoList LockInfoList

get

if (!FieldManager.FieldExists(LockInfoListProperty))

LoadProperty<LockInfoList>(LockInfoListProperty, LockInfoList.NewLockInfoList());

return GetProperty<LockInfoList>(LockInfoListProperty);

#endregion //Business Properties and Methods

#region Validation Rules

protected override void AddBusinessRules()

//

// Name

//

ValidationRules.AddRule(CommonRules.StringRequired, NameProperty);

ValidationRules.AddRule(CommonRules.StringMaxLength, new CommonRules.MaxLengthRuleArgs(NameProperty, 50));

//

// Description

//

ValidationRules.AddRule(CommonRules.StringMaxLength, new CommonRules.MaxLengthRuleArgs(DescriptionProperty, 255));

partial void AddCustomRules();

#endregion //Validation Rules

#region Factory Methods

public static Template NewTemplate()

return DataPortal.Create<Template>();

public static Template GetTemplate(int id)

return DataPortal.Fetch<Template>(new SingleCriteria<Template, int>(id));

public static void DeleteTemplate(int id)

DataPortal.Delete(new SingleCriteria<Template, int>(id));

private Template()

{ /* require use of factory method */ }

#endregion //Factory Methods

#region Data Access

#region Data Access - Create

[RunLocal]

protected override void DataPortal_Create()

bool cancel = false;

OnCreating(ref cancel);

if (cancel) return;

partial void OnCreating(ref bool cancel);

partial void OnCreated();

#endregion //Data Access - Create

#region Data Access - Fetch

private void DataPortal_Fetch(SingleCriteria<Template, int> criteria)

bool cancel = false;

OnFetching(criteria, ref cancel);

if (cancel) return;

using (var mgr = ContextManager<Pulse.PLMSuite.DalLinq.PulseDbDataContext>

.GetManager(Database.PulseDb))

//set option to eager load child object(s)

var opts = new System.Data.Linq.DataLoadOptions();

opts.LoadWith<Pulse.PLMSuite.DalLinq.claims_templates_Template>(p => p.NotificationList);

opts.LoadWith<Pulse.PLMSuite.DalLinq.claims_templates_Template>(p => p.SignOffList);

var data = mgr.DataContext.claims_templates_Template

LoadProperty<int>(IDProperty, data.ID);

LoadProperty<string>(NameProperty, data.Name);

LoadProperty<int>(GroupIDProperty, data.GroupID);

LoadProperty<string>(DescriptionProperty, data.Description);

//Load child object(s)

LoadProperty<NotificationList>(NotificationListProperty, NotificationList.GetNotificationList(data.NotificationList));

LoadProperty<SignOffList>(SignOffListProperty, SignOffList.GetSignOffList(data.SignOffList));

}//using

partial void OnFetching(SingleCriteria<Template, int> criteria, ref bool cancel);

partial void OnFetched();

partial void OnMemberLoading(Pulse.PLMSuite.DalLinq.claims_templates_Template data);

partial void OnMemberLoaded();

#endregion //Data Access - Fetch

#region Data Access - Insert

protected override void DataPortal_Insert()

bool cancel = false;

OnInserting(ref cancel);

if (cancel) return;

using (var mgr = ContextManager<Pulse.PLMSuite.DalLinq.PulseDbDataContext>

.GetManager(Database.PulseDb))

// Check that no template with this name already exists.

if (Template.Exists(this.Name))

throw new Exceptions.UniqueConstraintException(string.Format("Unable to save template. A template named {0} already exists.", this.Name));

var data = new Pulse.PLMSuite.DalLinq.claims_templates_Template();

data.Name = ReadProperty<string>(NameProperty);

data.GroupID = ReadProperty<int>(GroupIDProperty);

data.Description = ReadProperty<string>(DescriptionProperty);

LoadProperty<int>(IDProperty, data.ID);

//Insert Child object(s)

DataPortal.UpdateChild(ReadProperty<NotificationList>(NotificationListProperty), this);

DataPortal.UpdateChild(ReadProperty<SignOffList>(SignOffListProperty), this);

}//using

partial void OnInserting(ref bool cancel);

partial void OnInserted();

partial void OnMemberReading(Pulse.PLMSuite.DalLinq.claims_templates_Template data);

partial void OnMemberRead();

#endregion //Data Access - Insert

#region Data Access - Update

protected override void DataPortal_Update()

bool cancel = false;

OnUpdating(ref cancel);

if (cancel) return;

using (var mgr = ContextManager<Pulse.PLMSuite.DalLinq.PulseDbDataContext>

.GetManager(Database.PulseDb))

var data = new Pulse.PLMSuite.DalLinq.claims_templates_Template()

ID = ReadProperty<int>(IDProperty)

if (IsSelfDirty)

data.Name = ReadProperty<string>(NameProperty);

data.GroupID = ReadProperty<int>(GroupIDProperty);

data.Description = ReadProperty<string>(DescriptionProperty);

//Update Child object(s)

DataPortal.UpdateChild(ReadProperty<NotificationList>(NotificationListProperty), this);

DataPortal.UpdateChild(ReadProperty<SignOffList>(SignOffListProperty), this);

if (IsSelfDirty)

LoadProperty<int>(IDProperty, data.ID);

}//using

partial void OnUpdating(ref bool cancel);

partial void OnUpdated();

#endregion //Data Access - Update

#region Data Access - Delete

protected override void DataPortal_DeleteSelf()

bool cancel = false;

OnSelfDeleting(ref cancel);

if (cancel) return;

using (var mgr = ContextManager<Pulse.PLMSuite.DalLinq.PulseDbDataContext>

.GetManager(Database.PulseDb))

//Delete Child object(s), which may contain concurrency check

DataPortal.UpdateChild(ReadProperty<NotificationList>(NotificationListProperty), this);

DataPortal.UpdateChild(ReadProperty<SignOffList>(SignOffListProperty), this);

var data = new Pulse.PLMSuite.DalLinq.claims_templates_Template()

ID = ReadProperty<int>(IDProperty)

}//using

SetProperty<NotificationList>(NotificationListProperty, NotificationList.NewNotificationList());

SetProperty<SignOffList>(SignOffListProperty, SignOffList.NewSignOffList());

partial void OnSelfDeleting(ref bool cancel);

partial void OnSelfDeleted();

partial void OnMemberSelfDeleting();

partial void OnMemberSelfDeleted();

private void DataPortal_Delete(SingleCriteria<Template, int> criteria)

bool cancel = false;

OnDeleting(criteria, ref cancel);

if (cancel) return;

using (var mgr = ContextManager<Pulse.PLMSuite.DalLinq.PulseDbDataContext>

.GetManager(Database.PulseDb))

var data = mgr.DataContext.claims_templates_Template

//Delete Child object(s)

}//using

SetProperty<NotificationList>(NotificationListProperty, NotificationList.NewNotificationList());

SetProperty<SignOffList>(SignOffListProperty, SignOffList.NewSignOffList());

partial void OnDeleting(SingleCriteria<Template, int> criteria, ref bool cancel);

partial void OnDeleted();

partial void OnMemberDeleting(Pulse.PLMSuite.DalLinq.claims_templates_Template data);

partial void OnMemberDeleted();

#endregion //Data Access - Delete

#endregion //Data Access

Michael replied on Tuesday, March 24, 2009