Table Of ContentLearning NHibernate 4
Explore the full potential of NHibernate to build robust
data access code
Suhas Chatekar
BIRMINGHAM - MUMBAI
https://www.ebooksworld.in
Learning NHibernate 4
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First published: July 2015
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Credits
Author Project Coordinator
Suhas Chatekar Mary Alex
Reviewers Proofreader
Fabio Maulo Safis Editing
Ricardo Peres
Alexander Zaytsev Indexer
Rekha Nair
Commissioning Editor
Usha Iyer Graphics
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Acquisition Editor
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Content Development Editor
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Aparna Bhagat
Technical Editor
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Copy Editors
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About the Author
Suhas Chatekar has been in the business of building software for 12 years. He
has mainly worked on .NET but possesses the skills of a full-stack developer. He
started his career as a software developer, working on a trading platform. Since
then, he has worked in several different domains, building both desktop and web-
based applications. He is very passionate about coding and learning. He believes
that practices such as test-driven development, automated testing, continuous
deployment, and Agile are at the heart of quality software development. He
currently works as a technical architect and mentor for a London-based company,
working in the fields of loyalty, assistance, and insurance.
He has used NHibernate in various commercial projects, including both greenfield
and brownfield. He also has experience in using NHibernate along with other ORMs
and data retrieval techniques in large code bases. He is especially fond of clean
code and following the right architectural guidelines. Through years of experience
of working with NHibernate, he believes he has acquired some knowledge about
best architectural principles that help in building resilient data access code using
NHibernate, which he can share with readers.
In his spare time, he explores new technologies and writes a blog. He lives in London
with his wife, Snehal, and daughter, Ovee. You can reach out to Suhas on Twitter
using his handle at suhas_chatekar.
I would like to thank my wife, Snehal, without whose love,
inspiration, and support, this book would never have been written.
I would also like to thank everyone in my big family who supported
me through the busy process of writing this book.
I would like to dedicate this book to my father, who would have
been very proud if he was still with us.
Special thanks to my editors at Packt Publishing, who helped me at
every stage of the book and had more patience than I would have
had. And, how can I miss out on the expert reviewers, without whose
input, the book would have never been complete. Thanks a lot.
https://www.ebooksworld.in
About the Reviewers
Ricardo Peres is a Portuguese developer who has been working with .NET since
2001. He's a technology enthusiast and has worked in many areas, from games to
enterprise applications. His main interests nowadays are enterprise application
integration and web technologies. He is a contributor to the NHibernate community,
writes a blog on technical subjects at http://weblogs.asp.net/ricardoperes, and
can be followed on Twitter at @rjperes75. Ricardo has been declared a Microsoft
Most Valuable Professional (MVP) in ASP.NET/IIS.
He is currently working as technical evangelist for a London-based company
called Simplifydigital.
Ricardo Peres has authored Entity Framework Code First Succinctly, NHibernate
Succinctly, Microsoft Unity Succinctly, and ASP.NET Multitenant Applications
Succinctly, for the Succinctly series of books by Syncfusion.
I'd like to thank my family, Zézinha, Francisco, and Madalena, for all
their support and patience.
https://www.ebooksworld.in
Alexander Zaytsev discovered his passion for IT when he was a small kid, and
since then, he has dedicated his life to becoming an excellent software developer. He
has over 10 years of experience in the IT field, analyzing, designing, and developing
.NET-based enterprise applications, using cutting-edge technologies. He works as
an independent consultant in the .NET space, providing technical expertise to all
kinds of software development companies. He is an active member of open source
and local development communities. He writes a blog at http://alexzaytsev.me.
He is also one of the main contributors to the NHibernate project and one of the few
people who really know NHibernate's internals.
He considers himself a highly qualified expert in the C# language and the Microsoft
.NET platform. He is an expert in technologies such as ASP.NET, web services, ASP.
NET MVC, ASP.NET Web API, NServiceBus, NHibernate, Entity Framework, LINQ,
Windows Forms (including related technologies such as HTML), JavaScript, and
CSS/Less.
In his work, Alexander uses the principles of Agile, extreme programming, and
scrum. In day-to-day tasks, he uses test-driven development (TDD) and pair
programming.
I would like to thank my family(em dash)my wife, Olga, and my
son, Stepan, for all their support and love.
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Table of Contents
Preface ix
Chapter 1: Introduction to NHibernate 1
What is ORM? 1
What is NHibernate? 3
What is new in NHibernate 4.0? 5
NHibernate for users of Entity Framework 6
Is using ORM a bad idea? 8
Why ORM is a better bet? 9
Non-functional features required by the data access layer 10
Building blocks of NHibernate 12
Mappings 12
Configuration 12
Session 13
Summary 14
Chapter 2: Let's Build a Simple Application 15
Explaining the approach used in learning NHibernate 16
The problem statement 17
The development setup 19
Visual Studio 2013 19
SQL Server 2012 Express 19
ReSharper 20
NUnit 20
NuGet 20
SQLite 21
The domain model 21
Employee 22
Leave 22
SeasonTicketLoan 23
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