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

Membership providers


To make our login controls work with NHibernate, we need to implement the System.Web.Security.MembershipProvider abstract class. This is an abstract class specifically designed to allow us to implement the standard security model using our own authentication logic.

When we implement the abstract class, there are about 30 methods and properties that we can override to implement all of the features of the membership provider, but we really only have to implement one method to get it to work. If we implement the ValidateUser() method, we can have basic login functionality.

The ValidateUser() method has two parameters (both strings), UserName and Password. In our method, we need to accept these two parameters, validate that they match the credentials stored in the database, and return either true or false based on that validation.

A very simple implementation of the ValidateUser() method using NHibernate would be to simply hash the user-supplied password, retrieve the user...