Fluent NHibernate, One-to-many with Orphan Delete

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NHibernate;
using FluentNHibernate.Mapping;
using NUnit.Framework;

namespace NStackExample.Data.Tests
{

public class Parent : Entity
{

private ICollection m_Children = new HashSet();

public virtual ICollection Children
{
get { return m_Children; }
protected set { m_Children = value; }
}

}

public class Child : Entity
{

private Parent m_Parent;

public virtual Parent Parent
{
get { return m_Parent; }
set { m_Parent = value; }
}

}

public class ParentMapping : ClassMap
{
public ParentMapping()
{
Id((Parent x) => x.ID).GeneratedBy.GuidComb();
HasMany((Parent x) => x.Children)
.AsSet()
.WithForeignKeyConstraintName("ParentChildren")
.Cascade.AllDeleteOrphan()
.Inverse();
}
}

public class ChildMapping : ClassMap
{
public ChildMapping()
{
Id((Child x) => x.ID).GeneratedBy.GuidComb();
References((Child x) => x.Parent)
.Cascade.All()
.WithForeignKey("ChildParent")
.Not.Nullable();
}
}

[TestFixture()]
public class ParentMappingTests
{

[Test()]
public void CanCascadeSaveFromParentToChild()
{
Guid ID;
Parent P;
Child C;
using (SQLiteDatabaseScope Scope = new SQLiteDatabaseScope())
{
using (ISession Session = Scope.OpenSession())
{
using (ITransaction Tran = Session.BeginTransaction())
{
P = new Parent();

//Add a child of the parent
C = new Child { Parent = P };
P.Children.Add(C);

ID = (Guid) Session.Save(P);
Tran.Commit();
}
Session.Clear();

using (ITransaction Tran = Session.BeginTransaction())
{

P = Session.Get(ID);

Assert.IsNotNull(P);
Assert.AreEqual(ID, P.ID);

Assert.AreEqual(1, P.Children.Count);
Assert.AreNotSame(C, P.Children.First());
Assert.AreEqual(C.ID , P.Children.First().ID );
Assert.AreSame(P.Children.First().Parent, P);

Tran.Commit();

}
}

}
}

[Test()]
public void CanDeleteOrphanFromParentToChildren()
{
Guid ID;
Parent P;
Child C;
using (SQLiteDatabaseScope Scope = new SQLiteDatabaseScope())
{
using (ISession Session = Scope.OpenSession())
{
using (ITransaction Tran = Session.BeginTransaction())
{
P = new Parent();

//Add a child of the parent
C = new Child { Parent = P };
P.Children.Add(C);

ID = (Guid) Session.Save(P);
Tran.Commit();
}
Session.Clear();

using (ITransaction Tran = Session.BeginTransaction())
{

P = Session.Get(ID);

Assert.IsNotNull(P);
Assert.AreEqual(ID, P.ID);

Assert.AreEqual(1, P.Children.Count);
Assert.AreNotSame(C, P.Children.First());
Assert.AreEqual(C.ID, P.Children.First().ID );
Assert.AreSame(P.Children.First().Parent, P);

Tran.Commit();
}
Session.Clear();

//Orphan the child
C = P.Children.First();
P.Children.Remove(C);
C.Parent = null;

using (ITransaction Tran = Session.BeginTransaction())
{
//Orhpaned child should be deleted
Session.SaveOrUpdate(P);
Tran.Commit();
}
Session.Clear();

using (ITransaction Tran = Session.BeginTransaction())
{
P = Session.Get(ID);

Assert.AreEqual(0, P.Children.Count);

Tran.Commit();

}
}
}
}

}

}

Passing parameter with the OnSuccess or OnComplete event in Ajax.BeginForm

passing a parameter with the OnSuccess event in a Ajax.ActionLink or Ajax.BeginForm is bit tricky...

< script type="text/javascript">
function ExeOnComplete(strParam1)
{
 alert('strParam1');
}
< /script>"


using (Ajax.BeginForm("Create", "Profile", new AjaxOptions { HttpMethod = "Post", OnComplete = "function(){ExeOnComplete('abc');}"}))
{
// your code here
}

Excellent FREE resource for learning Domain Driven Design

If you asked developers what books they should read, most would (or should) include Domain Driven Design by Eric Evans.

Why is it important?

The patterns and practices outlined in this book will help you develop more successful software solutions.

How?

Eric Evans shows how you can improve communication with your customer (by doing things like developing a ubiquitous language), implement agile practices and create maintainable solutions which follow good software development principles.

One of common criticisms of the book is that ‘it does go on a bit’.

The good news is that the folks over at InfoQ have come up with ‘Domain Driven Design Quickly’ which summarizes what Domain Driven Design is about.

The even better news is that it’s FREE if you register with InfoQ, which is no bad thing because it’s a fantastic resource with videos, presentations and some very good articles.

post ref : http://www.arrangeactassert.com/excellent-free-resource-for-learning-domain-driven-design/