Change persistence from internal ExampleDS to Hibernate resource local?

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Hi,

could someone help me porting my already running webapp (AS7 with initial ExampleDS database, Hibernate4) to an existing Hibernate resouce local?

As far as I read, I cannot use the same config because Jboss AS does not support the resource-local transactiontype.

What do I actually have to change between the following to configs?

tyvm for you help!

actual one:

<?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="primary">
        <jta-data-source>java:jboss/datasources/ExampleDS</jta-data-source>
        <properties>

            <property name="hibernate.hbm2ddl.auto" value="create-drop" />        
            <property name="hibernate.show_sql" value="false" />
            <property
                name="hibernate.transaction.manager_lookup_class"
                value="org.hibernate.transaction.JBossTransactionManagerLookup" />
        </properties>
    </persistence-unit>
</persistence>

local one:

<?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="primary"
        transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>

        <properties>
            <property name="hibernate.connection.driver_class" value="org.hsqldb.jdbcDriver" />        
            <property name="hibernate.connection.url" value="jdbc:hsqldb:MyDB;hsqldb.lock_file=false"/>    
            <property name="hibernate.connection.username" value="user" />
            <property name="hibernate.connection.password" value="pass" />
            <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect" />
    
            <property name="hibernate.hbm2ddl.auto" value="create" />
            <property name="hibernate.show_sql" value="false" />
        </properties>
    </persistence-unit>
</persistence>