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NHibernate 4.x Cookbook
NHibernate 4.x Cookbook

NHibernate 4.x Cookbook: Over 90 incredible and powerful recipes to help you efficiently use NHibernate in your application , Second Edition

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Profile Icon Jason Dentler Profile Icon Zaytsev Profile Icon Darshan Joshi Profile Icon Liljas
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eBook Jan 2017 448 pages 2nd Edition
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Arrow left icon
Profile Icon Jason Dentler Profile Icon Zaytsev Profile Icon Darshan Joshi Profile Icon Liljas
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₱1571.99 ₱2245.99
Full star icon Full star icon Full star icon Full star icon Full star icon 5 (1 Ratings)
eBook Jan 2017 448 pages 2nd Edition
eBook
₱1571.99 ₱2245.99
Paperback
₱2806.99
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NHibernate 4.x Cookbook

Chapter 2. Models and Mappings

In this chapter, we will cover the following topics:

  • Mapping a class with XML
  • Creating class hierarchy mappings
  • Creating class components
  • Mapping a one-to-many relationship
  • Mapping a many-to-many relationship
  • Mapping collections of elements and components
  • Setting up a base entity class
  • Handling versioning and concurrency
  • Mapping by code
  • Mapping by convention
  • Creating mappings fluently
  • Bidirectional one-to-many class relationships
  • Mappings enumerations
  • Immutable entities
  • Mapping relations to non-primary keys
  • Using lazy properties
  • Mapping joins
  • Using calculated properties
  • Using serializable values
  • Dynamic components
  • Mapping <subselect>

Mapping a class with XML

The suggested first step in any new NHibernate application is mapping the model. The mapping describes how objects O should be retrieved and stored as relational data R in the database. In the simplest scenarios, this is merely a straightforward mapping between classes in the code and tables in the database. Still, the structure of the code or of the database will usually require careful mapping in order to get correct behavior and optimal performance.

Note

Most of the recipes in this chapter utilize a custom library called NH4CookbookHelpers, which makes it possible to visualize the results and behaviors of the mappings described. For convenience, we use NuGet to reference this library, but feel free to download the source code from https://github.com/gliljas/NH4CookbookHelpers if you want to modify its functionality or just see how it works.

Getting ready

Before we begin mapping, let's get our Visual Studio solution set up. Follow these steps to set up your...

Creating class hierarchy mappings

It's common to have an inheritance hierarchy of subclasses. In this example, we will show you one method for mapping inheritance with NHibernate, called table-per-class hierarchy.

Getting ready

Complete the previous Mapping a class with XML example.

How to do it…

  1. Create a new class named Book with the following code:
    namespace Eg.Core
{
  public class Book : Product
  {

    public virtual string ISBN { get; set; }
    public virtual string Author { get; set; }

  }
}
  2. Create a new class named Movie with the following code:
    namespace Eg.Core
{
  public class Movie : Product 
  {

    public virtual string Director { get; set; }

  }
}
  3. Change the Product mapping to match the XML shown in the following code:
    <?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
    assembly="Eg.Core"
    namespace="Eg.Core">
  <class name="Product">
  ...

Creating class components

There are cases where a set of properties are used repeatedly. These properties may even have their own business logic, but they do not represent an entity in your application. They are value objects. In this recipe, we will tell you how to separate these properties and business logic into a component class without creating a separate entity.

Getting ready

Complete the Getting ready instructions at the beginning of this chapter.

How to do it…

  1. Add a folder named Components to the MappingRecipes project.
  2. In the folder, add an Address class with the following properties:
    public virtual Guid Id { get; protected set; }
public virtual string Lines { get; set; }
public virtual string City { get; set; }
public virtual string State { get; set; }
public virtual string ZipCode { get; set; }
  3. Add a Customer class with the following properties:
    public virtual string Name { get; set; }
public virtual Address BillingAddress { get; set; }
public virtual Address ShippingAddress ...

Mapping a one-to-many relationship

It's usually necessary to relate an entity to other entities. For example, an order can be related to many order lines and to a customer. In this example, we'll show you how to map a one-to-many relationship between Movie and a new entity class, ActorRole.

Getting ready

Complete the previous Creating class hierarchy mappings recipe.

How to do it…

  1. In Eg.Core, create a new class named ActorRole with the following code:
    namespace Eg.Core
{
  public class ActorRole : Entity 
  {

    public virtual string Actor { get; set; }
    public virtual string Role { get; set; }

  }
}
  2. Create an embedded resource mapping for ActorRole with the following XML:
    <?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
    assembly="Eg.Core"
    namespace="Eg.Core">
  <class name="ActorRole">
    <id name="Id">
      <generator class...

Mapping a many-to-many relationship

A student often attends many classes and hopefully every class is attended by more than one student. This type of relationship is called many-to-many and in a relational database, an intermediate table usually represents it, with at least two columns referencing the keys of the participating entities.

NHibernate supports many-to-many relationships and does so without having to expose the intermediate table to the code.

Getting ready

Complete the Getting ready instructions at the beginning of this chapter.

How to do it…

  1. Create a new folder named ManyToMany in the MappingRecipes project.
  2. Add a new class Student to the folder:
    public class Student
{
    public virtual Guid Id { get; protected set; }
    public virtual string Name { get; set; }
}
  3. Create an embedded resource mapping named Student.hbm.xml (in the same folder) with the following XML:
    <?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate...

Mapping collections of elements and components

So far, we've shown how to use collections where an entity relates to a set of other entitities. However, a collection can also hold simple values, such as strings or components, that is, objects with properties but no id.

Getting ready

Complete the Getting ready instructions at the beginning of this chapter.

How to do it…

  1. Add a new folder named ComponentCollections to the MappingRecipes project.
  2. Add a new class named Customer to the folder:
    public class Customer
{
    public Customer()
    {
        Addresses=new List<Address>();
        Tags=new HashSet<string>();
    }
    public virtual Guid Id { get; protected set; }
    public virtual string Name { get; set; }
    public virtual IList<Address> Addresses { get; set; }
    public virtual ISet<string> Tags { get; set; }
}
  3. Add a new class named Address to the folder:
    public class Address
{
    public string AddressLine1 { get; set; }
    public string AddressLine2...

Mapping a class with XML

The suggested first step in any new NHibernate application is mapping the model. The mapping describes how objects O should be retrieved and stored as relational data R in the database. In the simplest scenarios, this is merely a straightforward mapping between classes in the code and tables in the database. Still, the structure of the code or of the database will usually require careful mapping in order to get correct behavior and optimal performance.

Note

Most of the recipes in this chapter utilize a custom library called NH4CookbookHelpers, which makes it possible to visualize the results and behaviors of the mappings described. For convenience, we use NuGet to reference this library, but feel free to download the source code from https://github.com/gliljas/NH4CookbookHelpers if you want to modify its functionality or just see how it works.

Getting ready

Before we begin mapping, let's get our Visual Studio solution set up. Follow these steps to set up your solution...

Creating class hierarchy mappings

It's common to have an inheritance hierarchy of subclasses. In this example, we will show you one method for mapping inheritance with NHibernate, called table-per-class hierarchy.

Getting ready

Complete the previous Mapping a class with XML example.

How to do it…

  1. Create a new class named Book with the following code:

    namespace Eg.Core
{
  public class Book : Product
  {

    public virtual string ISBN { get; set; }
    public virtual string Author { get; set; }

  }
}

  2. Create a new class named Movie with the following code:

    namespace Eg.Core
{
  public class Movie : Product 
  {

    public virtual string Director { get; set; }

  }
}

  3. Change the Product mapping to match the XML shown in the following code:

    <?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
    assembly="Eg.Core"
    namespace="Eg.Core">
  <class name="Product">
    <id name="Id">
      <generator class="guid.comb" />
    &lt...

Creating class components

There are cases where a set of properties are used repeatedly. These properties may even have their own business logic, but they do not represent an entity in your application. They are value objects. In this recipe, we will tell you how to separate these properties and business logic into a component class without creating a separate entity.

Getting ready

Complete the Getting ready instructions at the beginning of this chapter.

How to do it…

  1. Add a folder named Components to the MappingRecipes project.

  2. In the folder, add an Address class with the following properties:

    public virtual Guid Id { get; protected set; }
public virtual string Lines { get; set; }
public virtual string City { get; set; }
public virtual string State { get; set; }
public virtual string ZipCode { get; set; }

  3. Add a Customer class with the following properties:

    public virtual string Name { get; set; }
public virtual Address BillingAddress { get; set; }
public virtual Address ShippingAddress { get; set...

Mapping a one-to-many relationship

It's usually necessary to relate an entity to other entities. For example, an order can be related to many order lines and to a customer. In this example, we'll show you how to map a one-to-many relationship between Movie and a new entity class, ActorRole.

Getting ready

Complete the previous Creating class hierarchy mappings recipe.

How to do it…

  1. In Eg.Core, create a new class named ActorRole with the following code:

    namespace Eg.Core
{
  public class ActorRole : Entity 
  {

    public virtual string Actor { get; set; }
    public virtual string Role { get; set; }

  }
}

  2. Create an embedded resource mapping for ActorRole with the following XML:

    <?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
    assembly="Eg.Core"
    namespace="Eg.Core">
  <class name="ActorRole">
    <id name="Id">
      <generator class="guid.comb" />
    </id>
    <property name="Actor" not-null="true" /&gt...

Mapping a many-to-many relationship

A student often attends many classes and hopefully every class is attended by more than one student. This type of relationship is called many-to-many and in a relational database, an intermediate table usually represents it, with at least two columns referencing the keys of the participating entities.

NHibernate supports many-to-many relationships and does so without having to expose the intermediate table to the code.

Getting ready

Complete the Getting ready instructions at the beginning of this chapter.

How to do it…

  1. Create a new folder named ManyToMany in the MappingRecipes project.

  2. Add a new class Student to the folder:

    public class Student
{
    public virtual Guid Id { get; protected set; }
    public virtual string Name { get; set; }
}

  3. Create an embedded resource mapping named Student.hbm.xml (in the same folder) with the following XML:

    <?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
    assembly="MappingRecipes...

Mapping collections of elements and components

So far, we've shown how to use collections where an entity relates to a set of other entitities. However, a collection can also hold simple values, such as strings or components, that is, objects with properties but no id.

Getting ready

Complete the Getting ready instructions at the beginning of this chapter.

How to do it…

  1. Add a new folder named ComponentCollections to the MappingRecipes project.

  2. Add a new class named Customer to the folder:

    public class Customer
{
    public Customer()
    {
        Addresses=new List<Address>();
        Tags=new HashSet<string>();
    }
    public virtual Guid Id { get; protected set; }
    public virtual string Name { get; set; }
    public virtual IList<Address> Addresses { get; set; }
    public virtual ISet<string> Tags { get; set; }
}

  3. Add a new class named Address to the folder:

    public class Address
{
    public string AddressLine1 { get; set; }
    public string AddressLine2 { get; set...

Setting up a base entity class

In this recipe, we'll show how to set up a base class for your entities. The purpose of this class is to provide base implementations of potentially tricky Equals and GetHashCode methods.

How to do it…

  1. We create a base class, where the type of Id is specified using a generic argument, as shown:

    public abstract class Entity<TId>
{

  public virtual TId Id { get; protected set; }

  public override bool Equals(object obj)
  {
    return Equals(obj as Entity<TId>);
  }

  private static bool IsTransient(Entity<TId> obj)
  {
    return obj != null &&
           Equals(obj.Id, default(TId));
  }

  private Type GetUnproxiedType()
  {
    return GetType();
  }

  public virtual bool Equals(Entity<TId> other)
  {
    if (other == null)
      return false;

    if (ReferenceEquals(this, other))
      return true;

    if (!IsTransient(this) &&
        !IsTransient(other) &&
        Equals(Id, other.Id))
    {
      var otherType...

Handling versioning and concurrency

For any multiuser transactional system, you must decide how to handle concurrent updates and possible versioning issues. In this recipe, we will show you how to set up versioning and optimistic concurrency with NHibernate.

Getting ready

Complete the Getting ready instructions at the beginning of this chapter.

How to do it…

  1. Add a new folder named Versioning to the MappingRecipes project.

  2. Add a new class named VersionedProduct to the folder:

    public class VersionedProduct
{
    public virtual int Id { get; protected set; }
    public virtual int Version { get; protected set; }
    public virtual string Name { get; set; }public virtual string Description { get; set; }}

  3. Add an embedded mapping named VersionProduct.hbm.xml:

    <?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
    assembly="MappingRecipes"
    namespace="MappingRecipes.Versioning">
    <class name="VersionedProduct">
        <id name="Id"...

Mapping by code

XML files have been NHibernate's default approach to mapping since its inception. It's a platform neutral, flexible and easily parsed format. The mapping syntax for Java's Hibernate is virtually identical to NHibernate's.

NHibernate also allows you to specify the mappings using nothing but code. This gives us a couple of advantages, since the mapping code gets intricately connected to the classes it should map. There is no risk of misspelled class or property names and you can use runtime logic to customize the mappings.

Getting ready

Complete the Getting ready instructions given at the beginning of this chapter.

The recipe uses the entity classes that we created in Eg.Core in the preceding recipes of this chapter. However, for convenience, NH4CookbookHelpers also provide the same class model and we will use that model here. Feel free to modify the code (changing the using statements) to use Eg.Core, if that suits you better. You may have to add a version property (integer) to...

Mapping by convention

In large object models, you will notice that many aspects of the mappings are repetitive. Maybe the Comb generator should generate all POIDs or all properties referencing a class without an Id property should be treated as a component mapping. By setting up mapping conventions, you can potentially avoid all explicit mappings and instead let the code structure do the work for you.

Getting ready

Complete the Getting ready instructions at the beginning of this chapter.

How to do it…

  1. Add a folder named MappingByConvention to the MappingRecipes project.

  2. Add a class named MyModelMapper to the folder:

    using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using NH4CookbookHelpers.Mapping.Model;
using NHibernate.Mapping.ByCode;

namespace MappingRecipes.MappingByConvention
{
  public class MyModelMapper : ConventionModelMapper
  {
    public MyModelMapper()
    {
      IsEntity((t, declared) => 
        typeof(Entity).IsAssignableFrom(t) && 
   ...

Creating mappings fluently

Even before NHibernate added the possibility to provide mappings in code, the Fluent NHibernate project (FNH) delivered a strongly-typed, fluent syntax, as an alternative to XML mappings. It remains very popular and many NHibernate articles online show examples using FNH mappings. In this recipe, we will show you how to map our product model using Fluent NHibernate.

Getting ready

Complete the Getting ready instructions at the beginning of this chapter.

How to do it…

  1. Add a new folder named MappingWithFluent to the MappingRecipes project.

  2. Add a reference to the FluentNHibernate package using Nuget package manager console.

  3. Create a new class named ProductMap with the following code:

    using NH4CookbookHelpers.Mapping.Model;
using FluentNHibernate.Mapping;


namespace MappingRecipes.MappingWithFluent
{
 public class ProductMap : ClassMap<Product>
 {
  public ProductMap()
  {
   Id(p => p.Id).GeneratedBy.GuidComb();
   Version(x => x.Version);
   NaturalId().Property...

Bidirectional one-to-many class relationships

It's often very useful to have a bidirectional relationship between entities. It also simplifies matters for NHibernate, which can often produce more efficient persistence queries when both sides of a relationship are involved.

In this recipe, we will show you how to set up a bidirectional one-to-many relationship between two entity classes.

How to do it…

  1. Add a new folder named Bidirectional to the MappingRecipes project.

  2. Add the following Order class:

    public class Order
{
  private ISet<OrderItem> _items;
  private ISet<Project> _projects;

  public virtual Guid Id { get; protected set; }

  public Order()
  {
    _items = new HashSet<OrderItem>();
    _projects = new HashSet<Project>();
  }


  public virtual IEnumerable<OrderItem> Items
  {
    get
    {
      return _items;
    }
  }

  public virtual IEnumerable<Project> Projects
  {
    get
    {
      return _projects;
    }
  }

  public virtual bool AddItem...

Mapping enumerations

An improperly mapped enumeration can lead to unnecessary updates. In this recipe, we'll discuss why and show you how to map an enumeration property to a string field.

How to do it…

  1. Add a new folder named Enumerations to the MappingRecipes project.

  2. Add the following AccountTypes enum to the folder:

    public enum AccountTypes
{
  Consumer,
  Business,
  Corporate,
  NonProfit
}

  3. Add the following Account class:

    public class Account
{  
  public virtual Guid Id { get; set; }
  public virtual AccountTypes AcctType { get; set; }
  public virtual string Number { get; set; }
  public virtual string Name { get; set; }
}

  4. Add an embedded NHibernate mapping document named Account.hbm.xml with the following class mapping:

    <class name="Account">
  <id name="Id">
    <generator class="guid.comb" />
  </id>
  <natural-id>
    <property name="Number" not-null="true"  />
  </natural-id>
  <property name="Name" not-null="true" />
  <property name...

Immutable entities

An immutable entity is an entity that never changes once it has been created. An example could be entries in event log. New log entries may be added all the time; however, once saved, they are not supposed to be modified.

This behavior could of course be enforced in code, or perhaps even in the database, but if we tell NHibernate to treat specific classes as immutable, we can both enforce the immutability and allow NHibernate optimize performance a bit.

Getting ready

Complete the Getting ready instructions at the beginning of this chapter.

How to do it…

  1. Add a new folder named ImmutableEntities to the MappingRecipes project.

  2. Add a new class named LogEntry to the folder:

    using System;

namespace MappingRecipes.ImmutableEntities
{
  public class LogEntry
  {
    public virtual Guid Id { get; protected set; }
    public virtual string Message { get; set; }
  }
}

  3. Add a new embedded mapping named LogEntry.hbm.xml to the folder:

    <?xml version="1.0" encoding="utf-8" ?>
<hibernate...

Mapping relations to non-primary keys

In legacy databases, sometimes data is stored in ways that doesn't quite map to an object model. One such scenario is when the relation between for example a Customer and its ContactPersons is controlled by a column other than the primary key in the Customer table. NHibernate provides a way to handle these relations, using the property-ref mapping attribute.

Getting ready

Complete the Getting ready instructions at the beginning of this chapter.

How to do it…

  1. Add a new folder named PropertyRefs to the MappingRecipes project.

  2. Add a class named Customer to the folder:

    using System.Collections.Generic;

namespace MappingRecipes.PropertyRefs
{
  public class Customer
  {
    public Customer()
    {
      ContactPersons=new HashSet<ContactPerson>();
    }
    public virtual int Id { get; protected set; }
    public virtual string Name { get; set; }
    public virtual ISet<ContactPerson> ContactPersons 
 { 
   get; 
   set; 
 }
    public virtual int...
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Key benefits

  • Master the full range of NHibernate features through detailed example recipes that you can quickly apply to your own applications
  • Reduce hours of application development time and get a better application architecture and improved performance
  • Create, maintain, and update your database structure automatically with the help of NHibernate

Description

NHibernate is a mature, flexible, scalable, and feature-complete open source project for data access. Although it sounds like an easy task to build and maintain database applications, it can be challenging to get beyond the basics and develop applications that meet your needs perfectly. NHibernate allows you to use plain SQL and stored procedures less and keep focus on your application logic instead. Learning the best practices for a NHibernate-based application will help you avoid problems and ensure that your project is a success. The book will take you from the absolute basics of NHibernate through to its most advanced features, showing you how to take full advantage of each concept to quickly create amazing database applications. You will learn several techniques for each of the four core NHibernate tasks—configuration, mapping, session and transaction management, and querying—and which techniques fit best with various types of applications. In short, you will be able to build an application using NHibernate by the end of the book. You will also learn how to best implement enterprise application architecture patterns using NHibernate, leading to clean, easy-to-understand code and increased productivity. In addition to new features, you will learn creative ways to extend the NHibernate core, as well as gaining techniques to work with the NHibernate search, shards, spatial, envers, and validation projects.

Who is this book for?

This book is written for .NET developers who want to use NHibernate and those who want to deepen their knowledge of the platform. Examples are written in C# and XML. Some basic knowledge of SQL is assumed. If you build .NET applications that use relational databases, this book is for you.

What you will learn

  • Create a persistent object model to move data in and out of your database
  • Build the database from your model automatically
  • Configure NHibernate for use with WebForms, MVC, WPF, and WinForms applications
  • Create database queries using a variety of methods
  • Improve the performance of your applications using a variety of techniques
  • Build an infrastructure for fast, easy, test-driven development of your data access layer
  • Implement entity validation, auditing, full-text search, horizontal partitioning (sharding), and spatial queries using NHibernate Contrib projects

Product Details

Country selected
Publication date, Length, Edition, Language, ISBN-13
Publication date : Jan 31, 2017
Length: 448 pages
Edition : 2nd
Language : English
ISBN-13 : 9781784394110
Category :
Programming
Concepts :
Application Development
Tools :
NHibernate

What do you get with eBook?

Product feature icon Instant access to your Digital eBook purchase
Product feature icon Download this book in EPUB and PDF formats
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
OR

Contact Details

Modal Close icon
Payment Processing...
tick Completed

Billing Address

Product Details

Publication date : Jan 31, 2017
Length: 448 pages
Edition : 2nd
Language : English
ISBN-13 : 9781784394110
Category :
Programming
Concepts :
Application Development
Tools :
NHibernate

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NHibernate 4.x Cookbook
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.NET Design Patterns
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Table of Contents

10 Chapters
1. The Configuration and Schema Chevron down icon Chevron up icon
1. The Configuration and Schema
Introduction
Installing NHibernate
Configuring NHibernate with hibernate.cfg.xml
Configuring NHibernate with App.config or Web.config
Configuring NHibernate with code
Configuring NHibernate with Fluent NHibernate
Configuring NHibernate logging
Generating the database
Scripting the database
Updating the database
Using NHibernate schema tool
2. Models and Mappings Chevron down icon Chevron up icon
2. Models and Mappings
Mapping a class with XML
Creating class hierarchy mappings
Creating class components
Mapping a one-to-many relationship
Mapping a many-to-many relationship
Mapping collections of elements and components
Setting up a base entity class
Handling versioning and concurrency
Mapping by code
Mapping by convention
Creating mappings fluently
Bidirectional one-to-many class relationships
Mapping enumerations
Immutable entities
Mapping relations to non-primary keys
Using lazy properties
Mapping joins
Using calculated properties
Using serializable values
Dynamic components
Mapping <subselect>
3. Sessions and Transactions Chevron down icon Chevron up icon
3. Sessions and Transactions
Introduction
Setting up session-per-web request
Setting up session-per-presenter
Creating a session ASP.NET MVC action filter
Creating a transaction ASP.NET MVC action filter
Save entities to the database
Using session.Merge
Using session.Refresh
Handle concurrency using session.Lock
There's more…
Using dictionaries as entities
Using NHibernate with transaction scope
4. Queries Chevron down icon Chevron up icon
4. Queries
Introduction
Query entities by ID
Using LINQ to NHibernate
Using CriteriaQueries
Using QueryOver
Using QueryOver projections and aggregates
Using the Hibernate Query Language
Using native SQL
Eager loading with LINQ
Eager loading with Criteria
Eager loading with QueryOver
Eager loading with HQL
Eager loading with SQL
Using named queries
Using detached queries
Using HQL for bulk data changes
Filtering collections
Using result transformers
Extra lazy collections
5. Improving Performance Chevron down icon Chevron up icon
5. Improving Performance
Reducing application startup time
Using MultiCriteria
Using MultiQuery
Using Futures
Eager loading child collections
Using stateless sessions
Using read-only entities
Use the second-level cache
Configuring the second-level cache with code
Sharding databases for performance
6. Testing Chevron down icon Chevron up icon
6. Testing
Introduction
Using NHibernate Profiler
Profiling NHibernate with Glimpse
Fast testing with the SQLite in-memory database
Preloading data with SQLite
Using Fluent NHibernate persistence testing
Using the Ghostbusters test
7. Data Access Layer Chevron down icon Chevron up icon
7. Data Access Layer
Introduction
Transaction auto-wrapping for the data access layer
Setting up an NHibernate repository
Using named queries in the data access layer
Using ICriteria in the data access layer
Using paged queries in the data access layer
Using LINQ specifications in the data access layer
8. Extending NHibernate Chevron down icon Chevron up icon
8. Extending NHibernate
Introduction
Creating an encrypted string type
Creating a money type
Using well-known instance types
Using dependency injection with entities
Creating an audit-event listener
Creation and change stamping of entities
Generating trigger-based auditing
Implementing a soft-delete pattern
Setting Microsoft SQL's Context_Info
Using dynamic connection strings
Using custom dialect functions
Using custom functions in LINQ
Extending the LINQ provider
9. NHibernate Contribution Projects Chevron down icon Chevron up icon
9. NHibernate Contribution Projects
Introduction
Property validation with attributes
Creating validator classes
Setting up full-text searches
Auditing data with Envers
Using NHibernate Spatial
Index Chevron down icon Chevron up icon
Index

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Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Full star icon Full star icon 5
(1 Ratings)
5 star 100%
4 star 0%
3 star 0%
2 star 0%
1 star 0%
codemuncher Jan 02, 2021
Full star icon Full star icon Full star icon Full star icon Full star icon 5
If your looking to learn about nhibernate this a great book and it gives most examples in both XML and c# code. It covers a variety of basic and advanced subjects and I fully recommend it
Amazon Verified review Amazon

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About the 4 authors

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Profile icon Jason Dentler
Jason Dentler
Jason Dentler grew up in the small Texas town of Mission Valley. He started tinkering with computers as a kid in the late 1980s, and all these years later, he hasn't stopped. He's worked in a few different industries. Currently, he builds really awesome software in higher education. He's an Eagle Scout and a graduate of the University of Houston – Victoria.
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Profile icon Zaytsev
Zaytsev
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. Alexander has many years' 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, and writes a blog at http://alexzaytsev.me. He is one of the main contributors to the NHibernate project, and one of the few people who really know the NHibernate internals. He is adept in Agile software development, and he believes that Agile practices such as test-driven development, pair programming, automated testing, continuous integration, and deployment are the keys to quality software. He lives in Auckland with his wife, Olga, and son, Stepan. In his spare time, he loves spending time with his family, cycling, and doing coding just for fun.
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Profile icon Darshan Joshi
Darshan Joshi
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Profile icon Liljas
Liljas
Gunnar Liljas is a software architect with more than 20 years' experience in developing and designing web-based solutions. His focus has been on data-driven content publishing, not only for the Web, but also for automated and on-demand print publishing. Currently, he spends most of his waking hours at the Swedish CRM supplier Revide, where he uses tools such as NHibernate and Redis to create targeted emails, text messages, and campaign web sites based on massive data sources. He's also one of the lead contributors to the NHibernate open source project. In his spare time, Gunnar sings in two classical choirs and often performs with the renowned Norrkping Symphony Orchestra.
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