How does NHibernate work?

How does NHibernate work?

NHibernate uses mapping files to guide its translation from the database to business objects and back again. As an alternative, you can use attributes on classes and properties, instead of mapping files. To keep things as simple as possible, we’re going to use mapping files in this article, rather than attributes.

How does hibernate inheritance work?

Hibernate Inheritance Mapping

1. Entity inheritance means that we can use polymorphic queries for retrieving all the sub-class entities when querying for a super-class.
2. Notice that this class no longer has an @Entity annotation, as it won’t be persisted in the database by itself.

How do I learn NHibernate?

1. The First Step: To create the database table such as “Employee”. Create a database table to map against the class (POCO).
2. POCO: Now create a simple class “Employee” using Add new item. Employee Class.
3. Create a Main Class or ASPX Page. First, create NHibernate Session Factory class.

How do I set up NHibernate?

Basic Setup of Fluent NHibernate

1. Step 1: Create the Database and Table.
2. Step 2: Create a Console App (.
3. Step 3: Create Your Entities/Classes.
4. Step 4: Create the Mapping (Entities to DB Tables)
5. Step 5: Create the NHibernate Configuration.
6. Step 6: Read and Write to the DB Table.

Is NHibernate free?

NHibernate is free and open-source software that is distributed under the GNU Lesser General Public License. NHibernate is a port of Hibernate.

What is NHibernate .net core?

NHibernate is an object–relational mapping (ORM) solution for the Microsoft . NET platform. It provides a framework for mapping an object-oriented domain model to a traditional relational database.

What is the difference between NHibernate and fluent NHibernate?

Fluent NHibernate is another way of mapping or you can say it is an alternative to NHibernate’s standard XML mapping files. Instead of writing XML (. hbm. You can also set how things should be named once, then Fluent NHibernate does the rest.

What does mapping by code do in NHibernate?

Time to sum the series up. Let’s start with what mapping-by-code is. It is an XML-less mapping solution being an integral part of NHibernate since 3.2, based on ConfORM library. Its API tries to conform to XML naming and structure. There’s a strong convention in how the mapping methods are built.

Where to find hibernate.cfg.xml in NHibernate?

So NHibernate will search for a file called hibernate.cfg.xml in the output directory. That’s exactly what we want since we have defined our settings in this file. In the third line of the code we tell NHibernate that it can find mapping information in the assembly which contains also the class Product.

Where can I find NHibernate mapping.xsd file?

This is a convention used by NHibernate to automatically recognize the file as a mapping file. Define “Embedded Resource” as Build Action for this xml file. In the Windows Explorer locate the nhibernate-mapping.xsd in the src folder of NHibernate and copy it to your SharedLibs folder.

How to create a new instance of NHibernate?

The first line of the test method creates a new instance of the NHibernate configuration class. This class is used to configure NHibernate. In the second line we tell NHibernate to configure itself. NHibernate will look out for configuration information since we do not provide any information here in the test method.