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NHibernate 4.x Cookbook

You're reading from   NHibernate 4.x Cookbook Over 90 incredible and powerful recipes to help you efficiently use NHibernate in your application

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Product type Paperback
Published in Jan 2017
Publisher Packt
ISBN-13 9781784396428
Length 448 pages
Edition 2nd Edition
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Authors (4):
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Darshan Joshi Darshan Joshi
Author Profile Icon Darshan Joshi
Darshan Joshi
Alexander Zaytsev Alexander Zaytsev
Author Profile Icon Alexander Zaytsev
Alexander Zaytsev
Jason Dentler Jason Dentler
Author Profile Icon Jason Dentler
Jason Dentler
Gunnar Liljas Gunnar Liljas
Author Profile Icon Gunnar Liljas
Gunnar Liljas
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Toc

Table of Contents (11) Chapters Close

Preface 1. The Configuration and Schema FREE CHAPTER 2. Models and Mappings 3. Sessions and Transactions 4. Queries 5. Improving Performance 6. Testing 7. Data Access Layer 8. Extending NHibernate 9. NHibernate Contribution Projects Index

Property validation with attributes

NHibernate Validator provides data validation for classes. In this recipe, we will show you how to use NHibernate Validator attributes to validate your entities.

Getting ready

Complete the Eg.Core model and mappings from Chapter 2, Models and Mappings.

How to do it…

  1. Create a new class library project named Eg.AttributeValidation.
  2. Copy the Eg.Core model and mappings from Chapter 2, Models and Mappings to this new project.
  3. Change the namespace and assembly references in the mappings to Eg.AttributeValidation.
  4. Change the namespaces for the entity classes to Eg.AttributeValidation.
  5. Install the NHibernate Validator package using NuGet Package Manager Console by running the following command:
    Install-Package NHibernate.Validator -Project Eg.AttributeValidation
    
  6. Create a new attribute class named NotNegativeDecimalAttribute with the following code:
    [Serializable]
    [AttributeUsage(AttributeTargets.Field | AttributeTargets.Property)]
        public class NotNegativeDecimalAttribute...
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