Inheritance in entity

entity framework core inheritance
entity framework inheritance
entity framework inheritance database first
ef core inheritance without discriminator
entity framework table per type
entity framework discriminator
entity framework table per hierarchy
table per concrete class entity framework

how inherience works in entity? I mean for example

public class Animal {
    private String name;

    //Getters and setters
}


@Entity
public class Dog extends Animal {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private long id;
}

But hibernate create table only with id in database, why?

You should mark your super class with @MappedSuperClass:

@MappedSuperClass
public class Animal {
    private String name;

    //Getters and setters
}

Inheritance Strategy in EF 6 Code-First, Inheritance in Entity Framework Core. Inheritance is a key object-oriented programming concept that facilitates code reuse and is often used to model hierarchies. The following model represents various types of contracts that you might be able to enter into with a media/communications business: public class Contract. Inheritance is a key object-oriented programming concept that facilitates code reuse and is often used to model hierarchies. It is supported in Entity Framework Core using the Table Per Hierarchy pattern

Your base classe is not annotated with @Entity so hibernate doesn't know of its existance. Inheritance in ORM is not implemented as inheritance in Java. You have specific constructs/annotations to define for table inheritance.

Inheritance, Entity Inheritance. Entities support class inheritance, polymorphic associations, and polymorphic queries. Entity classes can extend non-entity classes, and non-entity classes can extend entity classes. Entity classes can be both abstract and concrete. In this data modelling guide, entity inheritance was introduced. Inheritance is a common way in object-oriented programming to share data and behavior through a class hierarchy. On the database level, the concept of inheritance is not directly available.

From Java Platform, Enterprise Edition: The Java EE Tutorial:

37.2.3 Non-Entity Superclasses

Entities may have non-entity superclasses, and these superclasses can be either abstract or concrete. The state of non-entity superclasses is nonpersistent, and any state inherited from the non-entity superclass by an entity class is nonpersistent. Non-entity superclasses may not be used in EntityManager or Query operations. Any mapping or relationship annotations in non-entity superclasses are ignored.

So you will need something like this:

@MappedSuperclass
public class Animal {

    @Column
    private String name;

    //Getters and setters
}

Also from the abve mentioned source:

37.2.2 Mapped Superclasses

Entities may inherit from superclasses that contain persistent state and mapping information but are not entities. That is, the superclass is not decorated with the @Entity annotation and is not mapped as an entity by the Java Persistence provider. These superclasses are most often used when you have state and mapping information common to multiple entity classes.

Mapped superclasses are specified by decorating the class with the annotation javax.persistence.MappedSuperclass

Tutorial: Implement Inheritance with EF in an ASP.NET MVC 5 appS , Entity inheritance means that we can use polymorphic queries for retrieving all the sub-class entities when querying for a super-class. Implementing Inheritance with the Entity Framework in an ASP.NET MVC Application (8 of 10) Table-per-Hierarchy versus Table-per-Type Inheritance. Creating the Person Class. Note: You won't be able to compile the project after creating Adding the Person Entity Type to the Model. Changing

Entity Inheritance, A mapped superclass is not an entity, and there is no table for it. That means that you can't use polymorphic queries that select all Publication entities and you also​  What is Inheritance Type in Entity Framework? Entity Framework code first creates tables for each concrete domain class. You can also design your domain classes using inheritance.

Hibernate Inheritance Mapping, Just like in any OOP (Object-Oriented Programming) language, entity inheritance is suitable for varying behavior rather than reusing data  Entity Inheritance is a very useful technique, but only when you use it along with a behavioral software design pattern, such as Strategy or Visitor pattern. If you only need to propagate certain properties from a base class to all subclasses, you don’t need JPA entity inheritance.

Complete Guide: Inheritance strategies with JPA and Hibernate, The TPC inheritance states that each concrete class (a class which can be instantiated) in the hierarchy of entities is mapped to a separate table  Inheritance in the EF model is used to control how inheritance in the entity classes is represented in the database. By convention, it is up to the database provider to determine how inheritance will be represented in the database. See Inheritance (Relational Database) for how this is handled with a relational database provider.