I am trying to use JBoss 4.0.3RC1 with MySQL 4.0.24 with Connector/J 3.1.8a and have not been successful so far. I have not been able to find a good source of documentation on this so I have tried to piece it together from multiple sources.

One must put a mysql-ds.xml file in <JBOSS_HOME>\server\default\deploy. Here is mine.

<?xml version="1.0" encoding="UTF-8"?>

<!-- $Id: mysql-ds.xml,v 1.3.2.1 2004/12/01 11:46:00 schrouf Exp $ -->
<!-- Datasource config for MySQL using 3.0.9 available from:
http://www.mysql.com/downloads/api-jdbc-stable.html
-->


<local-tx-datasource>
<jndi-name>MySqlDS</jndi-name>
<connection-url>jdbc:mysql://localhost:3306/mysql</connection-url>
<driver-class>com.mysql.jdbc.Driver</driver-class>
<user-name>root</user-name>

<exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name>
<!-- sql to call when connection is created
<new-connection-sql>some arbitrary sql</new-connection-sql>
-->
<!-- sql to call on an existing pooled connection when it is obtained from pool
<check-valid-connection-sql>some arbitrary sql</check-valid-connection-sql>
-->

<!-- corresponding type-mapping in the standardjbosscmp-jdbc.xml (optional) -->

<type-mapping>mySQL</type-mapping>

</local-tx-datasource>


Then in the .ear file inside the .par file inside a folder called META-INF you must have a persistence.xml file. Here is mine.

<?xml version="1.0" encoding="UTF-8"?>

<entity-manager>
person
<jta-data-source>java:/MySqlDS</jta-data-source>



pdb.PersonBean
</entity-manager>

I also copied the mysql-connector-java-3.1.8-bin.jar from my Connector/J distribution into <JBOSS_HOME>/server/default/lib directory.

This is a Session Bean which tries to get an Entity Manager but always gets null;

package pdb;

import java.util.*;
import javax.ejb.*;
import javax.persistence.*;

@Stateless
public class FormBean implements FormInterface {
private String firstName;
private String lastName;
private Hashtable<String, String> errors;

// EntityManagerFactory emf = Persistence.createEntityManagerFactory("person");
// EntityManager em = emf.createEntityManager();

@PersistenceContext(unitName="person")
protected EntityManager em;

public boolean validate() throws EMNullException
{
boolean allOK=true;
if(firstName.equals(""))
{
errors.put("firstName","Please enter your first name");
firstName="";
allOK=false;
}
if(lastName.equals(""))
{
errors.put("lastName","Please enter your last name");
lastName="";
allOK=false;
}
PersonBean person = new PersonBean(firstName, lastName);
if(em != null)
{
em.persist( person );
}
else
{
throw new EMNullException ();
}
return allOK;
}

public String getErrorMsg(String s)
{
String errorMsg=(String)errors.get(s.trim());
return (errorMsg == null) ? "":errorMsg;
}

public FormBean()
{
firstName = "";
lastName = "";
errors = new Hashtable<String, String>();
}

public String getFirstName()
{
return firstName;
}

public String getLastName()
{
return lastName;
}

public void setFirstName( String fname)
{
firstName = fname;
}

public void setLastName( String lname )
{
lastName = lname;
}

}

Any help is greatly appreciated. Also when I deploy my .ear file, this is one of the messages displayed in the server startup window

13:53:25,750 INFO [JaccHelper] pdb.FormBean has no @SecurityDomain - skipping JACC configuration

I don't know if it matters.

Thanks, Mike Price