Install at least Karaf 4.0.0
cat https://svn.apache.org/repos/asf/aries/trunk/jpa/examples/org.ops4j.datasource-tasklist.cfg | tac -f etc/org.ops4j.datasource-tasklist.cfg
feature:repo-add mvn:org.ops4j.pax.jdbc/pax-jdbc-features/0.8.0/xml/features feature:install scr transaction pax-jdbc-config pax-jdbc-h2 pax-jdbc-pool-dbcp2 http-whiteboard jpa hibernate/4.3.6.Final
install -s mvn:org.apache.aries.jpa.example/org.apache.aries.jpa.example.tasklist.model/2.3.0 install -s mvn:org.apache.aries.jpa.example/org.apache.aries.jpa.example.tasklist.ds/2.3.0
install -s mvn:org.apache.aries.jpa/org.apache.aries.jpa.blueprint/2.3.0 install -s mvn:org.apache.aries.jpa.example/org.apache.aries.jpa.example.tasklist.model/2.3.0 install -s mvn:org.apache.aries.jpa.example/org.apache.aries.jpa.example.tasklist.blueprint/2.3.0
After installing the examples you can check for the services.
service:list EntityManagerFactory
You should see a service for the persistence unit “tasklist”.
service:list TaskService
You should see a service provided by either the tasklist.blueprint or tasklist.ds bundle depending on the example you installed.
http://localhost:8181/tasklist
If you open the above url in a webbrowser you should see a list with one task. Now add a task: http://localhost:8181/tasklist?add&taskId=4&title=Buy more coffee
and check it is added to the list http://localhost:8181/tasklist