Tapestry＆Hibernate：在EntityManager上持久调用不会提交到数据库

Question

I'm trying to set up a web application using JBoss and Hibernate, but I can't get the SQL database running. When I'm persisting an object and immediately calling contains() returns true, but when I'm looking for this object in another method my database is just empty.

My persistence.xml:

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="facePlace">
<non-jta-data-source>java:jboss/facePlace</non-jta-data-source>
<class>webtech2.faceplace.entities.Person</class>
<properties>
  <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect"/>
  <property name="hibernate.hbm2ddl.auto" value="update"/>
  <property name="hibernate.format_sql" value="true"/>
  <property name="hibernate.show_sql" value="true"/>
</properties>

The relevant code:

@Inject
@Persistence
EntityManager em;

public boolean signUp(String name,
      String password,
      String repeatPassword,
      Date birthdate,
      String gender) {
if (!password.equals(repeatPassword)) {
  return false;
}

log.info("person data: " + name + " " + password + " " + repeatPassword + " " + birthdate.toString() + " " + gender);

String saltedPassword = hashText + password;
String hashedPassword = generateHash(saltedPassword);
Person xperson = new Person(name, hashedPassword, birthdate, gender);
em.persist(xperson);
return true;
}

I tried adding @CommitAfter here, resulted in the same error, as well as calling getTransaction.begin() and getTransaction.commit() what lead to

java.sql.SQLException: You cannot commit during a managed transaction!

My entity is:

@Entity
public class Person implements Serializable {

private String name;
private Date birthdate;
private long id;
private String password;
private String gender;
private Set<Person> friends;

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "id")
public long getId() {
  return id;
}

public void setId(long id) {
  this.id = id;
}

When im seeing through the log I notice this warning that occurs when my second method tries to access the EntityManager:

HHH000436: Entity manager factory name (facePlace) is already registered.  If entity manager will be clustered or passivated, specify a unique value for property 'hibernate.ejb.entitymanager_factory_name'

Is this normal? What am I doing wrong?

Answer 1

No, I don't think that's normal.

I never worked with JBoss though, so I can only point you to people who did: Transaction Handling in Tapestry5 with Jboss-5.1.0GA/JBoss-7.0.2