jpa/eclipselink.jpa.test/resource/eclipselink-mongo-model-xml/server/persistence.xml

<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 persistence_1_0.xsd" version="1.0">
    <persistence-unit name="%%default%%" transaction-type="%%transaction-type%%">
        <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
        <mapping-file>META-INF/mongo-orm.xml</mapping-file>
        <properties>
            <property name="eclipselink.orm.validate.schema" value="true"/>
            <property name="eclipselink.target-server" value="%%server-platform%%"/>
            <property name="eclipselink.target-database" value="org.eclipse.persistence.nosql.adapters.mongo.MongoPlatform"/>
            <property name="eclipselink.nosql.connection-spec" value="org.eclipse.persistence.nosql.adapters.mongo.MongoConnectionSpec"/>
            <!--property name="eclipselink.nosql.property.mongo.port" value="localhost"/>
            <property name="eclipselink.nosql.property.mongo.host" value="localhost"/>
            <property name="eclipselink.nosql.property.mongo.db" value="mydb"/-->
        </properties>
    </persistence-unit>
</persistence>