What is NHibernate in C#?

NHibernate is Net framework based on Object-Relational Mapping Technique. A tool that creates a “virtual representation” of database objects within the code. Used to solve the problem of impedance mismatch between Class and relational databases and tables.

What is the difference between NHibernate and fluent NHibernate?

Fluent NHibernate offers an alternative to NHibernate’s standard XML mapping files. Rather than writing XML documents, you write mappings in strongly typed C# code. This allows for easy refactoring, improved readability and more concise code.

How do I configure NHibernate?

This article will give all that you need to get and modify data into a SQL database using 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.

Is NHibernate an ORM?

NHibernate is a popular, fast growing ORM with a helpful community of seasoned developers. Used in thousands of commercial and open source projects.

Is NHibernate better than Entity Framework?

nHibernate supports all types of databases but Entity framework need additional connectors to support databases other than MSSQL. nHibernate can be extended in terms of data loading, SQL generation, custom column types, custom collections etc but entity framework has limited extension points.

Is NHibernate a framework?

NHibernate is an open-source object-relational mapper for the.NET framework that is constantly evolving and feature-packed.

Is NHibernate better than entity framework?

What is dialect in NHibernate?

The dialect property specifies a dialect class that NHibernate uses to build SQL syntax specific to a Relational Database Management System (RDBMS). We’re using the Microsoft SQL 2012 dialect. Additionally, most dialects set intelligent defaults for other NHibernate properties, such as connection. driver_class .

What is NHibernate session?

The NHibernate session encapsulates a unit of work as specified by the unit of work pattern.

Is NHibernate an API?

NHibernate 3.0 Integrated LINQ support. Strongly typed criteria-like API called QueryOver. New AST-based parser for HQL engine. Support for lazy loading columns.

What is Session factory in NHibernate?

Abstract factory pattern: SessionFactory Interface. The NHibernate framework uses the abstract factory pattern for creating sessions and using them to persist the objects into the database. It is a factory class that is used in an aspx page to create session objects.

Is NHibernate thread safe?

The NHibernate ISession is not thread-safe, that is, it shouldn’t be shared by multiple threads.

When should I close SessionFactory?

close. Destroy this SessionFactory and release all resources (caches, connection pools, etc). It is the responsibility of the application to ensure that there are no open sessions before calling this method as the impact on those sessions is indeterminate. No-ops if already closed .

What does NHibernate flush do?

Flushing synchronizes the persistent store with in-memory changes but not vice-versa. Note that for all NHibernate ADO.NET connections/transactions, the transaction isolation level for that connection applies to all operations executed by NHibernate!

What is the difference between SessionFactory and session?

SessionFactory is a factory class for Session objects. It is available for the whole application while a Session is only available for particular transaction. Session is short-lived while SessionFactory objects are long-lived. SessionFactory provides a second level cache and Session provides a first level cache.

Is Hibernate SessionFactory Singleton?

@DarkHorse SessionFactory is not Singleton , it is used as singleton , it is immutable docs.jboss.org/hibernate/orm/3.5/javadocs/org/hibernate/…

Why is SessionFactory immutable?

Immutable : – Once the SessionFactory’s object is created you can not change or set the values of Session Facotyr. Its internal state is set at the time of creation.

Is SessionFactory immutable?

The internal state of a SessionFactory is immutable. Once it is created this internal state is set. This internal state includes all of the metadata about Object/Relational Mapping. Implementors must be threadsafe.