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From "Andrus Adamchik (JIRA)" <j...@apache.org>
Subject [jira] Closed: (CAY-1192) NoClassDefFoundError while loading JPA entity classes on Windows
Date Mon, 28 Dec 2009 20:27:29 GMT

     [ https://issues.apache.org/jira/browse/CAY-1192?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrus Adamchik closed CAY-1192.
--------------------------------

    Resolution: Won't Fix

since the JPA work has been suspended in favor of Cayenne API, closing JPA tasks now.

> NoClassDefFoundError while loading JPA entity classes on Windows
> ----------------------------------------------------------------
>
>                 Key: CAY-1192
>                 URL: https://issues.apache.org/jira/browse/CAY-1192
>             Project: Cayenne
>          Issue Type: Bug
>          Components: Cayenne JPA
>    Affects Versions: 3.0M5
>         Environment: MS Windows XP
> Eclipse 3.4.1
> JDK 1.5.08
>            Reporter: Neil Rutherford
>         Attachments: patch.diff
>
>
> While running a test app with 1 entity from inside Eclipse I get the below exception:
> 2009/03/12 02:17:03 org.apache.cayenne.jpa.Provider createEntityManagerFactory
> INFO: Extra PersistenceUnitInfo properties: {}
> Exception in thread "main" java.lang.NoClassDefFoundError: test\entities\Transaction
(wrong name: test/entities/Transaction)
> 	at java.lang.ClassLoader.defineClass1(Native Method)
> 	at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
> 	at java.lang.ClassLoader.defineClass(ClassLoader.java:465)
> 	at org.apache.cayenne.jpa.JpaUnitClassLoader.findClass(JpaUnitClassLoader.java:83)
> 	at org.apache.cayenne.jpa.JpaUnitClassLoader.loadClass(JpaUnitClassLoader.java:49)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
> 	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
> 	at java.lang.Class.forName0(Native Method)
> 	at java.lang.Class.forName(Class.java:242)
> 	at org.apache.cayenne.jpa.conf.EntityMapLoader.loadFromAnnotations(EntityMapLoader.java:249)
> 	at org.apache.cayenne.jpa.conf.EntityMapLoader.loadEntityMap(EntityMapLoader.java:112)
> 	at org.apache.cayenne.jpa.conf.EntityMapLoader.<init>(EntityMapLoader.java:88)
> 	at org.apache.cayenne.jpa.Provider.createContainerEntityManagerFactory(Provider.java:224)
> 	at org.apache.cayenne.jpa.Provider.createEntityManagerFactory(Provider.java:194)
> 	at javax.persistence.Persistence.createFactory(Persistence.java:171)
> 	at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:111)
> 	at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:65)
> 	at Main.main(Main.java:36)
> This seems to be caused by this line in org.apache.cayenne.jpa.conf.EntityMapLoader (inside
locateClassesInFolder(File,...):
> classes.add(absPath.substring(
>                                     rootPathLength,
>                                     absPath.length() - suffixLen).replace('/', '.'));
> because on Windows the path separator is a '\\', replacing the '/' with File.separatorChar
fixes my problem.

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