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

Time for action – adding some logging


In our Ordering.Console application of Chapter 5, The Session Procession, we were able to query data out of the database using a ICriteria object. We saw that NHibernate returned the data we asked for, but what if we wanted to know more? How do we see the SQL that was actually generated? Let's add some logging to our console application to show us the SQL that NHibernate generates.

  1. Open the References folder of the Ordering.Console application. Is the log4net dll already referenced? If not, then right-click on References, click Add Reference, and browse to the log4net.dll that was included with the NHibernate release.

  2. Right-click on the Ordering.Console application, and select Add | New Item. Select Application Configuration File, leave the name as App.config, and click on the Add button, as shown in the following screenshot:

  3. The first thing we need to add to our App.config file is a <configSections> tag inside the <configuration> section, with...