No default persistence unit in this deployment

[lalit2583]

Following is the Session bean and entity class...


Session1Bean.java
package com.jboss.sessionbeans;

import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import com.jboss.entity.Login;

public @Stateless class Session1Bean implements Session1 {

@PersistenceContext(name="demo")
private EntityManager em;
public void add(int userId, String password) {
Login lg = new Login();
lg.setUserId(12);
lg.setPassword("password");
em.persist(lg);
System.out.println("The value is persist ");
}

}


Login.class

package com.jboss.entity;

import java.io.Serializable;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;

@SuppressWarnings("serial")
@Entity
public class Login implements Serializable{

private int userId;
private String password;

@Column(name="PASSWORD")
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
@Id
@GeneratedValue
@Column(name="USERNAME")
public int getUserId() {
return userId;
}
public void setUserId(int userId) {
this.userId = userId;
}
public String toString() {
return Integer.toString(userId);
}
}


I have Persistence.xml as follows...
<?xml version="1.0" encoding="UTF-8"?>

<persistence-unit name="demo">
<jta-data-source>java:/MySqlDS</jta-data-source>
THese--->properties>
THese--->property name="hibernate.hbm2ddl.auto" value="create-drop" />
THese--->/properties>
</persistence-unit>


I have speciied all the things in persistence.xml these--> is used as marking it is not present in actual code
persistence.xml is inside META-INF folder...


Following is the error I am getting......



--- MBeans waiting for other MBeans ---
ObjectName: jboss.j2ee:service=EJB3,module=Demo3.jar
State: FAILED
Reason: java.lang.RuntimeException: Illegal @PersistenceUnit on private javax.
persistence.EntityManager com.jboss.sessionbeans.Session1Bean.em :There is no de
fault persistence unit in this deployment.

--- MBEANS THAT ARE THE ROOT CAUSE OF THE PROBLEM ---
ObjectName: jboss.j2ee:service=EJB3,module=Demo3.jar
State: FAILED
Reason: java.lang.RuntimeException: Illegal @PersistenceUnit on private javax.
persistence.EntityManager com.jboss.sessionbeans.Session1Bean.em :There is no de
fault persistence unit in this deployment.

[wolfgangknauf]

You have to set "unitName":

@PersistenceContext(unitName="demo")
private EntityManager em;

Hope this helps

Wolfgang