What is the difference between NHibernate and fluent NHibernate?

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.

What is NHibernate mapping?

nhibernate Mappings Xml Mappings It is a syntax xml file which contains the metadata required for the object/relational mapping. The metadata includes declaration of persistent classes and the mapping of properties (to columns and foreign key relationships to other entities) to database tables.

What is the use of NHibernate?

NHibernate is an ORM (Object Relational Mapper). Its purpose is to map objects in your OO application to tables in a database for persistence. Why would you need it? Because it can save you from writing a lot of tedious ADO.NET code.

What is fetch in NHibernate?

A fetching strategy is the strategy NHibernate will use for retrieving associated objects if the application needs to navigate the association. Fetch strategies may be declared in the O/R mapping metadata, or overridden by a particular HQL or Criteria query.

What is the difference between NHibernate and 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 entity framework better than NHibernate?

EF Core can use a ROWVERSION/TIMESTAMP column on SQL Server, or any of a list of columns, when updating a record. NHibernate offers richer capabilities, besides SQL Server ROWVERSION/TIMESTAMP, it can also use database native mechanisms such as Oracle’s ORA_ROWSCN, but also timestamp or version columns.

What is NHibernate inverse?

The Inverse attribute tells NHibernate if the collection is responsible to manage the relationship. inverse=false means that it should update the relationship, while inverse=true means that ‘it does not have to do anything’.

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 open source?

NHibernate is a mature, open source object-relational mapper for the . NET framework. It’s actively developed, fully featured and used in thousands of successful projects. Easily map regular C# or VB.NET object models designed in Visual Studio.

What is NHibernate session?

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

Is NHibernate a framework?

Entity Framework and NHibernate are Object-relational mapping frameworks (ORM) and are used to map database schema to domain objects in any object-oriented language.

What is the use of inverse true in Hibernate?

But, it’s real meaning is that it defines which side is the parent or the relationship owner for the two entities (parent or child). Hence, inverse=”true” in a Hibernate mapping shows that this class (the one with this XML definition) is the relationship owner; while the other class is the child.

Is NHibernate better than Entity Framework?

How do I configure NHibernate?

If you are using XML-based configuration, you can use a hibernate. cfg. xml file, which is just a standalone xml file using the NHibernate schema, or you can embed that NHibernate specific configuration inside of your app or web.

Is NHibernate thread safe?

Show activity on this post. I can’t be certain (as I’m a Java Hibernate guy) in NHibernate but in hibernate Session objects are not thread safe by design. You should open and close a session and never allow it out of the scope of the current thread.

What is difference between Cascade and inverse in Hibernate?

The property “Cascade” is used to define if update/delete method that applies to one object equally applies to a related one. “inverse”, however, is a property that defines which object is responsible for maintaining the relationship with another object.

What is lazy false in Hibernate?

To use lazy collection, you may optionally use lazy=”true” attribute in your collection. It is by default true, so you don’t need to do this. If you set it to false, all the child objects will be loaded initially which will decrease performance in case of big data.

What is cascading in Hibernate?

Cascading is about persistence actions involving one object propagating to other objects via an association. Cascading can apply to a variety of Hibernate actions, and it is typically transitive.

What is Cascade all Delete Orphan?

A special cascade style, delete-orphan, applies only to one-to-many associations, and indicates that the delete() operation should be applied to any child object that is removed from the association. Further down: It does not usually make sense to enable cascade on a many-to-one or many-to-many association.

What is fetch type lazy?

The FetchType. LAZY tells Hibernate to only fetch the related entities from the database when you use the relationship. This is a good idea in general because there’s no reason to select entities you don’t need for your uses case. You can see an example of a lazily fetched relationship in the following code snippets.