can I actually not have to list my entities in the persistence.xml?

[Pawel Veselov <pa...@gmail.com>]

Hi.

I'm trying to have OpenJPA run with my J2EE app.
I don't want to have to list all of the involved classes in my
persistence.xml
I have run the enhancer on all the entity objects as part of compiling
things over.

If I use this persistence.xml:

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence" version="2.0">
    <persistence-unit name="Snap">

<provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>
        <non-jta-data-source>snap_db_jpa</non-jta-data-source>
    </persistence-unit>
</persistence>

I get this exception on trying to run a named query:

java.lang.RuntimeException: <openjpa-2.1.1-r422266:1148538 fatal user
error> org.apache.openjpa.persistence.ArgumentException: There is no
query with the name "E_Device.GET_ALL" defined for any of the known
persistent classes: null.
	xxx.SnapStore.createDeviceList(SnapStore.java:1186)
	xxx.SnapStore.service(SnapStore.java:264)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

*root cause*

<openjpa-2.1.1-r422266:1148538 fatal user error>
org.apache.openjpa.persistence.ArgumentException: There is no query
with the name "E_Device.GET_ALL" defined for any of the known
persistent classes: null.
	org.apache.openjpa.meta.MetaDataRepository.getQueryMetaDataInternal(MetaDataRepository.java:1938)
	org.apache.openjpa.meta.MetaDataRepository.getQueryMetaData(MetaDataRepository.java:1919)
	org.apache.openjpa.persistence.EntityManagerImpl.createNamedQuery(EntityManagerImpl.java:1023)
	org.apache.openjpa.persistence.EntityManagerImpl.createNamedQuery(EntityManagerImpl.java:1016)
	xxx.SnapStore.createDeviceList(SnapStore.java:1176)
	xxx.SnapStore.service(SnapStore.java:264)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

That's because the query is in a NamedQuery annotation of an entity.
If I add '<class>xxx.E_Device</class>' to the persistence.xml, it finds
that query.

I couldn't find a way to ask OpenJPA to scan the current class path, but
I'm not even sure it's possible in J2EE app, for app classes.

Thanks,
  Pawel.