Migration from Kodo 4.1 JPA to open JPA

Question

I'd like to use open JPA at Workshop studio version 3.3. I use JPA from Kodo 4.1 Before. I'd like migration from Kodo 4.1 JPA to open JPA now. I downloaded open JPA openjpa-project-0.9.6-incubating-binary.zip from http://incubator.apache.org/openjpa/downloads.html. The steps I did:
1)     Create a new empty project with name "openJpaEx" by Workshop, File -> new project -> Web -> Dynamic Web Project;
2)     import the lib from the unpack openjpa-project-0.9.6-incubating-binary.zip to a new Workshop project;
3)     created a project with name "workshop-jpa-tutorial" by Workshop from the Kodo example template, File -> new project -> Example -> Java Persistence API (JPA) -> Workshop JPA tutorial.
4)     copy the Entity java classes and persistence.xml in "workshop-jpa-tutorial" to "openJpaEx"
5)     Run the project.
Is the above steps OK for the migration from Kodo 5.1 JPA to open JPA? If not, what the right way? The problems are
1)     For my case, Persistence.createEntityManagerFactory can not be initialized in project "openJpaEx" following above steps. Please give me some suggestions.
2)     I can not get the "JPA Configuration" at Workshop. "JPA Configuration" gives a GUI interface to manage the JPA classes and persistence.xml.
public class DAOHelper {
     public static EntityManagerFactory createEntityManagerFactory (String name)
          EntityManagerFactory emf = Persistence.createEntityManagerFactory(name);          
          return emf;          
     public static void closeEntityManagerFactory (EntityManagerFactory emf) {
try{
if(emf != null){
emf.close();
}catch(Exception e){
//Ignore Excpeption
public class CustomerDAO_Kodo implements CustomerDAO {
     public Customer getCustomer(Integer customerId) throws DAOException{
          Customer customer = null;
          EntityManager em = null;          
          EntityManagerFactory emf = null;
          try {               
               emf = DAOHelper.createEntityManagerFactory("unitK");
               em = emf.createEntityManager();
               Query query = em.createQuery(                              
                         "SELECT c FROM Customer c where c.customerid = ?1")
                              .setParameter(1, customerId);
               List results = query.getResultList ();                    
               for (Object res : results)               
               customer = (Customer) res;               
          }catch(Throwable t) {
               throw new DAOException(t);
          }finally{
               em.close();
               DAOHelper.closeEntityManagerFactory(emf);
          return customer;
persistence.xml
==========
<?xml version="1.0" encoding="ISO-8859-1" ?>
<persistence 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_1_0.xsd"
     version="1.0">     
     <persistence-unit name="unitK">
          <class>com.bea.beans.Contact</class>
          <class>com.bea.beans.Customer</class>
          <class>com.bea.beans.Customerid</class>
          <class>com.bea.beans.Lineitem</class>
          <class>com.bea.beans.OrderData</class>
          <class>com.bea.beans.Product</class>
          <properties>
               <property name="openjpa.TransactionMode" value="local"/>
               <property name="openjpa.ConnectionDriverName" value="org.apache.derby.jdbc.ClientDriver"/>
               <property name="openjpa.ConnectionURL" value="jdbc:derby://localhost:1527/saleDB"/>
               <property name="openjpa.ConnectionUserName" value="app"/>
               <property name="openjpa.ConnectionPassword" value="app"/>
          </properties>
     </persistence-unit>     
</persistence>

Answer 1

Hi,
I don't think that the Workshop folks monitor this newsgroup, and the people on this newsgroup don't have much experience with Workshop.
You might want to repost on a Workshop newsgroup.
Also, you mentioned that you had problems with Persistence.createEntityManagerFactory(). Was the problem in execution of the code, or just that the Persistence class wasn't available in the classpath?
-Patrick