Hibernate cannot find my Entity classes which are in a separate jar file

My persistence.xml is located in A.jar and entity classes are in B.jar. When trying to create a query using entity manager (from A.jar), I got exception saying it cannot find NamedQueries. However, named queries are listed on the entity class using annotation.

Tried to use <jar-file/> to include B.jar in persistence.xml, but it doesn't work. Here's what I've tried.

   <persistence-unit name="myapp">
         ... ...



Figured out my problem.

<jar-file/> is not necessary.

All the entity classes in jars other than current jar should be listed in <class/>, persistence.xml should be configured so the <class/> node is placed in front of <properties/> (XML schema defines all those nodes as sequence).

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