itests/jpa-container-blueprint-testbundle/src/main/resources/META-INF/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="test_unit_blueprint" transaction-type="JTA">
		<description>Test persistence unit for the Blueprint test</description>

		<properties>
            <property name="javax.persistence.jdbc.driver"
                value="org.apache.derby.jdbc.EmbeddedDriver-pool-xa" />
            <property name="javax.persistence.jdbc.url" value="jdbc:derby:memory:TEST;create=true" />

            <!-- These properties are creating the database on the fly. We 
                are using them to avoid the tests having to create a database -->

            <property name="openjpa.jdbc.SynchronizeMappings"
                value="buildSchema(ForeignKeys=true)" />
            <property name="openjpa.jdbc.DBDictionary" value="derby" />

            <property name="eclipselink.ddl-generation" value="drop-and-create-tables"/>
            <property name="hibernate.dialect"
                value="org.hibernate.dialect.DerbyTenSevenDialect" />
            <property name="hibernate.hbm2ddl.auto" value="create-drop" />
        </properties>
	</persistence-unit>
    
</persistence>