About long

tutorial

Step 2: Define a JPA Entity Class

Explains how to define a JPA entity class in an Eclipse Web Application.... { private static final long serialVersionUID = 1L ;   // Persistent Fields: @Id @GeneratedValue Long id ; private String name ; private Date signingDate ...

 
tutorial

Step 2: Define a JPA Entity Class

Explains how to define a JPA entity class in a NetBeans Web Application.... { private static final long serialVersionUID = 1L ;   // Persistent Fields: @Id @GeneratedValue Long id ; private String name ; private Date signingDate ...

 
api-jpa

javax.persistence.MapsId

Designates a ManyToOne or OneToOne relationship attribute that provides the mapping for an EmbeddedId primary key, an attribute within an EmbeddedId primary key, or a simple primary key of the parent entity.(Annotation of JPA)

 
tutorial

Step 2: Entity Class and Persistence Unit

Explains how to define a JPA entity class and a persistence unit (persistence.xml) in a NetBeans Java EE 6 web application.... { private static final long serialVersionUID = 1L ;   // Persistent Fields: @Id @GeneratedValue Long id ; private String name ; private Date signingDate ...

 
tutorial

Step 2: Entity Class and Persistence Unit

Explains how to define a JPA entity class and a persistence unit (persistence.xml) in a NetBeans Spring MVC web application project.... { private static final long serialVersionUID = 1L ;   // Persistent Fields: @Id @GeneratedValue Long id ; private String name ; private Date signingDate ...

 
tutorial

Step 2: Entity Class and Persistence Unit

To store objects in an ObjectDB database using JPA we need to define an entity class:... { private static final long serialVersionUID = 1L ;   // Persistent Fields: @Id @GeneratedValue Long id ; private String name ; private Date signingDate ...

 
tutorial

Step 2: Entity Class and Persistence Unit

Explains how to define a JPA entity class and a persistence unit (persistence.xml) in an Eclipse Spring MVC web application project.... { private static final long serialVersionUID = 1L ;   // Persistent Fields: @Id @GeneratedValue Long id ; private String name ; private Date signingDate ...

 
api-jpa

javax.persistence.Version

Specifies the version field or property of an entity class that serves as its optimistic lock value.(Annotation of JPA)

 
api-jpa

javax.persistence.GeneratedValue

Provides for the specification of generation strategies for the values of primary keys.(Annotation of JPA)

 
api-jdo

javax.jdo.spi.PersistenceCapable.ObjectIdFieldManager

This interface is a convenience interface that allows an instance to implement both ObjectIdFieldSupplier and ObjectIdFieldConsumer.(Interface of JDO)