Migration from glassfish to apache - apache

Question

I created a project using Netbeans and selected Glassfish 3.1 as a server, it also uses Derby database. Now I want to migrate to Apache Tomcat 7, I just did the following:
Stopped Glassfish
Changed the Netbeans project's properties to use Apache 7 instead of Glassfish
Added Apache to Netbeans and started it
When I try to build the project, several error messages appear like:
error: cannot find symbol
import javax.persistence.Basic;
although I ensured that /bin path of Java is set correctly in Apache server properties in Netbeans and that src.zip path is also set.
I think there are some steps that must be followed to have a successful migration, can any one guide me?
Thanks

Answer 1

Apache Tomcat does not come with the JPA specification. It is a Servlet container only.
You must add JPA specification plus Hibernate (implementation) to your project and make sure it will be deployed on your WEB-INF/lib.
Then, make sure your Persistence Unit is of transaction-type="RESOURCE_LOCAL", and configure all necessary properties to create a connection.
Example:
<persistence-unit name="bookmark-ds" transaction-type="RESOURCE_LOCAL">
<class>com.sample.domain.YourEntity</class>
<properties>
<property name="javax.persistence.jdbc.driver" value="org.hsqldb.jdbcDriver" />
<property name="javax.persistence.jdbc.user" value="sa" />
<property name="javax.persistence.jdbc.password" value="" />
<property name="javax.persistence.jdbc.url" value="jdbc:hsqldb:mem:." />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="false" />
<property name="hibernate.hbm2ddl.auto" value="create-drop" />
</properties>
</persistence-unit>
Obs: this is an HSQLDB example. Adjust for Derby. ;-)
UPDATE: there's a great tutorial for Tomcat+JPA+EclipseLink here.