What should happen if I am running a runtime enhanced JSE application and there are multiple persistence.xml files in my classpath?
I found today that in some cases when I have an empty persistence.xml and a working persistence.xml file in my application's classpath, the enhancer doesn't run on my entity classes. Below I documented the order of which persistence.xml file 'wins' and ONLY the classes in that xml are enhanced. Another thing to note is that OpenJPA did use the PU properties that I specified in my 'working' xml(regardless of which xml is first in the classpath). The most alarming part is that OpenJPA behaves different across releases. The winner's classes are enhanced and the loser's classes aren't. openjpa-1.1.0.jar: The first persistence.xml found in the classpath is used. openjpa-1.2.0.jar: The last persistence.xml found in the classpath is used. openjpa-2.0.0-SNAPSHOT.jar: The last persistence.xml found in the classpath is used. * Empty persistence.xml <?xml version="1.0" encoding="UTF-8"?> <persistence xmlns="http://java.sun.com/xml/ns/persistence"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; version="1.0"> </persistence> * Working persistence.xml <?xml version="1.0" encoding="UTF-8"?> <persistence xmlns="http://java.sun.com/xml/ns/persistence"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; version="1.0"> <persistence-unit name="jpa.enhancement" transaction-type="RESOURCE_LOCAL"> <!-- Enumerate each entity in the persistence unit --> <class>main.TestEntity</class> <properties> <!-- Configure DB connection --> <property name="openjpa.ConnectionDriverName" value="org.apache.commons.dbcp.BasicDataSource"/> <property name="openjpa.ConnectionProperties" value="DriverClassName=com.mysql.jdbc.Driver,Url=jdbc:mysql://localhost/test,Username=root,Password=password"/> <property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema(ForeignKeys=true)"/> </properties> </persistence-unit> </persistence> -- View this message in context: http://n2.nabble.com/Multiple-persistence.xml-files-causing-runtime-ehnahcement-havoc-tp2323966p2323966.html Sent from the OpenJPA Developers mailing list archive at Nabble.com.
