[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-4864) "Cannot read files twice on NativeScanner" exception when using multiple persistence.xml
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-4864?page=c...
]
Vincent MATHON commented on HHH-4864:
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I use the same code as Bouiaw pointed out. To deal with hibernate 3.5.0-Final I simply
override
org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager#obtainPersistenceUnitInfo
as follow:
@Override
public PersistenceUnitInfo obtainPersistenceUnitInfo(String persistenceUnitName) {
PersistenceUnitInfo persistenceUnitInfo =
super.obtainPersistenceUnitInfo(persistenceUnitName);
persistenceUnitInfo.getJarFileUrls().remove(persistenceUnitInfo.getPersistenceUnitRootUrl());
return persistenceUnitInfo;
}
Under the cover, I ask spring to process all META-INF/persistence-spring.xml files (I have
renamed persistence.xml files to avoid interferences with JPA engines) in the classpath
using the same code as the one at
http://ancientprogramming.blogspot.com/2007/05/multiple-persistencexml-fi... . I
end with a merged persistence unit whose root url is the one of the last processed
persistence-spring.xml file. The JarFileUrls collection of this merged persistence unit
also contains the root URL and hibernate 3.5.x does not allow to process a jar twice as
previous versions did. Withdrawing the root URL from the JarFileUrls when possible solves
the issue.
"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
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