[hibernate-issues] [Hibernate-JIRA] Resolved: (HHH-4864) "Cannot read files twice on NativeScanner" exception when using multiple persistence.xml

"Cannot read files twice on NativeScanner" exception when using multiple persistence.xml ---------------------------------------------------------------------------------------- Key: HHH-4864 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4864 Project: Hibernate Core Issue Type: Bug Components: core Affects Versions: 3.5.0-Beta-3 Reporter: Bouiaw When subclassing DefaultPersistenceUnitManager as described in http://ancientprogramming.blogspot.com/2007/05/multiple-persistencexml-fi... in order to have my entities in different jars, Hibernate 3.5-Beta3 throw the following exception (it worked with previous version of Hibernate) : java.lang.RuntimeException: error trying to scan <jar-file>: file:/Users/bouiaw/resthub/resthub-core/target/classes/ at org.hibernate.ejb.Ejb3Configuration.scanForClasses(Ejb3Configuration.java:700) at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:465) at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:165) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:225) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:288) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1457) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1397) ... 51 more Caused by: org.hibernate.AssertionFailure: Cannot read files twice on NativeScanner at org.hibernate.ejb.packaging.NativeScanner.getFilesInJar(NativeScanner.java:168) at org.hibernate.ejb.Ejb3Configuration.addScannedEntries(Ejb3Configuration.java:393) at org.hibernate.ejb.Ejb3Configuration.scanForClasses(Ejb3Configuration.java:697) ... 57 more