Re: private static final EntityManagerFactory emfInstance = Persistence.createEntityManagerFactory("transactions-optional");

Hi Steve Moyer.

thinks a lot

i did this code i am putting here please abusarve this code and tell me where i am did mistake 

please help me out asap.

1) Persistence,xml.

<persistence-unit name="some_name_you_choose">

        <description>

            Persistence unit for the Envers tutorial of the Hibernate Getting Started Guide

        </description>

        <class>com.webreg.server.NameData</class>

        <properties>

            <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" />

            <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/ccmdb" />

            <property name="javax.persistence.jdbc.user" value="root" />

            <property name="javax.persistence.jdbc.password" value="root" />

            <property name="hibernate.show_sql" value="true" />

            <!-- <property name="hibernate.hbm2ddl.auto" value="create" /> -->

        </properties>

    </persistence-unit>

2) server side code:

pakage name: com.server.dmain.

NameData.java.

@Entity

@Table(name = "NAME")

public class NameData {

public static final EntityManager entityManager() {

return EMF.get().createEntityManager();

}

public NameData persist() {

try {

EntityManager em =entityManager();

em.persist(this);

}catch(Exception e){

System.out.println("exe:"+e);

}

//setter and getter's

.........

}

3) server side code 

EMF.java

public final class EMF {

    private static final EntityManagerFactory emfInstance = Persistence.createEntityManagerFactory(" some_name_you_choose");

    public static EntityManagerFactory get() {

        return emfInstance;

    }

    private EMF() {

     // nothing    

    

   }

}

Thanks & Regards

laxman

On Wed, May 2, 2012 at 6:50 PM, Steve Moyer <smoyer64@gmail.com> wrote:

Can you include the code for the class this is in?  You can't do this
in client code, and in server code, you'll need to make sure your
persistence.xml file is found (my most common mistake).

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