Book Image

NHibernate 2 Beginner's Guide

By : Aaron Cure
Book Image

NHibernate 2 Beginner's Guide

By: Aaron Cure

Overview of this book

<p>NHibernate is an open source object-relational mapper, or simply put, a way to retrieve data from your database into standard .NET objects. Quite often we spend hours designing the database, only to go back and re-design a mechanism to access that data and then optimize that mechanism. This book will save you time on your project, providing all the information along with concrete examples about the use and optimization of NHibernate.<br /><br />This book is an approachable, detailed introduction to the NHibernate object-relational mapper and how to integrate it with your .NET projects. If you're tired of writing stored procedures or maintaining inline SQL, this is the book for you.<br /><br />Connecting to a database to retrieve data is a major part of nearly every project, from websites to desktop applications to distributed applications. Using the techniques presented in this book, you can access data in your own database with little or no code.<br /><br />This book covers the use of NHibernate from a first glance at retrieving data and developing access layers to more advanced topics such as optimization and Security and Membership providers. It will show you how to connect to multiple databases and speed up your web applications using strong caching tools. We also discuss the use of third-party tools for code generation and other tricks to make your development smoother, quicker, and more effective.</p>
Table of Contents (19 chapters)
NHibernate 2
Credits
About the Author
About the Reviewers
Preface
Index

Chapter 1. First Look

It seems like every single project we begin as developers, no matter how simple, requires some sort of storage. Sometimes this is a simple collection of values in an XML file or a key-value pair in a properties file.

However, more often, we need to have access to larger volumes of data, represented in multiple related database tables. In either case, we are generally forced to reinvent the wheel, to create new data retrieval and storage methods for each piece of data we want to access. Enter NHibernate.

In this chapter, we will discuss:

  • What NHibernate is and why we should use it

  • HBM mapping files

  • Plain Old CLR Objects (POCOs)

  • Data access classes

  • A simple web page databound to a collection of NHibernate objects