server/data/data-jpa/src/test/resources/persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
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<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 http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
    version="2.0">

    <persistence-unit name="James" transaction-type="JTA">
       <provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>
        <jta-data-source>osgi:service/javax.sql.DataSource/(osgi.jndi.service.name=jdbc/james)</jta-data-source>
        <class>org.apache.james.domainlist.jpa.model.JPADomain</class>
        <class>org.apache.james.droplists.jpa.model.JPADropListEntry</class>
        <class>org.apache.james.user.jpa.model.JPAUser</class>
        <class>org.apache.james.rrt.jpa.model.JPARecipientRewrite</class>
        <class>org.apache.james.mailrepository.jpa.model.JPAUrl</class>
        <class>org.apache.james.mailrepository.jpa.model.JPAMail</class>
        <class>org.apache.james.sieve.jpa.model.JPASieveQuota</class>
        <class>org.apache.james.sieve.jpa.model.JPASieveScript</class>
        <exclude-unlisted-classes>true</exclude-unlisted-classes>
        <properties>
            <property name="openjpa.jdbc.DBDictionary" value="h2"/>
            <property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema(ForeignKeys=true)"/>
            <property name="openjpa.jdbc.MappingDefaults" value="ForeignKeyDeleteAction=cascade, JoinForeignKeyDeleteAction=cascade"/>
            <property name="openjpa.jdbc.SchemaFactory" value="native(ForeignKeys=true)"/>
            <property name="openjpa.jdbc.QuerySQLCache" value="false"/>
        </properties>

    </persistence-unit>

</persistence>