I have a entity class User. I want to add some more properties but to keep them nullable. What is the annotation use开发者_如何学运维d for this in JPA?
While reading through the Hibernate documentation, I keep seeing references to the concept of a 开发者_如何学JAVAnatural identifier.
I\'m running an application with the following components: Oracle 9i WAS 6.1.0.23 with WS and EJB3 features pack
I\'m using EJB and JPA, and when I try to access PhoneNumber objects in phoneNumbers attribute of Contact contact, it sometimes take several minutes for it to actually return data. It just returns no
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This is a design pattern question, so I\'ll illustrate it with a simple example of an address book app.
I\'m trying to learn JPA and I want create a simple Java command line app that will use JPA to query and update a database table.I mapped out the the simple code needed to do this.But I don\'t know ho
I am working on a simple EJB module using sample code. I am trying to implement CURD operations through a SOAP web service. I have a persistence unit defined in persistence.xml.
I\'m working on a JPA (Hibernate implementation of), Spring and Stripes web app. I have a number of JPA entities that have the following fields in common for both audit and query purposes:
@Entity public class Person { @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private Long id; private int salary;
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