Summary
I'm trying to run a Java web application JPA 2.0 example. The example application was written to run in Glassfish
, using EclipseLink
as JPA provider.
I would like to convert it to run in TomEE
with OpenJPA
as the JPA provider, but I can't any detailed tutorials for getting up and running with OpenJPA
.
Problem
I'm having trouble converting persistence.xml
to work with OpenJPA
instead of EclipseLink
. More specifically, the given persistence.xml
doesn't specify:
Entity
classes. Are these necessary?Also:
Details
Below is the EclipseLink persistence.xml
:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
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_2_0.xsd">
<persistence-unit name="order" transaction-type="JTA">
<jta-data-source>jdbc/__default</jta-data-source>
<properties>
<property name="eclipselink.ddl-generation" value="drop-and-create-tables" />
<property name="eclipselink.ddl-generation.output-mode"
value="both" />
</properties>
</persistence-unit>
</persistence>
I have the following Entity
classes:
order.entity.LineItem
order.entity.LineItemKey
order.entity.Order
order.entity.Part
order.entity.PartKey
order.entity.Vendor
order.entity.VendorPart
Question
If you add the openjpa.jdbc.SynchronizeMappings
property as shown below OpenJPA will auto-create all your tables, all your primary keys and all foreign keys exactly to match your objects
<property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema(ForeignKeys=true)"/>
Alternatively, you can use EclipseLink in TomEE by just adding the EclipseLink jars to <CATALINA_HOME>/lib/
refer here for Common PersistenceProvider properties