Re: MetadataManager.copyOfGlobalRepository problem

[Armin Waibel]

Hi,
could it be a class-loader problem (your test run in appServer with a 
specific class-loader hierarchy)?
http://www.mail-archive.com/ojb-user@db.apache.org/msg11050.html

Could it be a package problem? Domain.class directory doesn't match 
package name?

In OJB test-suite this method was used several times with success, e.g. 
in ...metadata.MetadataTest#testDescriptorRepository_1

regards,
Armin
Stas Ostapenko wrote:
Hi! I have problem with this very simple code.
When I try to run it I have an strange exception.
import org.apache.ojb.broker.metadata.DescriptorRepository;
import org.apache.ojb.broker.metadata.MetadataManager;
public class test_copyOfGlobalRepository
{
       public static void main(String args[])
       {
         try
         {
               MetadataManager mm = MetadataManager.getInstance();
               mm.setEnablePerThreadChanges(true);
               DescriptorRepository dr = mm.copyOfGlobalRepository();
         }
         catch(Exception ex)
         {
         ex.printStackTrace();
         }
       }
}
org.apache.commons.lang.SerializationException: java.lang.ClassNotFoundException
: Domain
       at org.apache.commons.lang.SerializationUtils.deserialize(SerializationU
tils.java:202)
       at org.apache.commons.lang.SerializationUtils.deserialize(SerializationU
tils.java:229)
       at org.apache.commons.lang.SerializationUtils.clone(SerializationUtils.j
ava:117)
       at org.apache.ojb.broker.metadata.MetadataManager.copyOfGlobalRepository
(MetadataManager.java:434)
       at test_copyOfGlobalRepository.main(test_copyOfGlobalRepository.java:13)
Caused by: java.lang.ClassNotFoundException: Domain
       at java.net.URLClassLoader$1.run(URLClassLoader.java:199)
       at java.security.AccessController.doPrivileged(Native Method)
       at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
       at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
       at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
       at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
       at java.lang.Class.forName0(Native Method)
       at java.lang.Class.forName(Class.java:219)
       at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:558)
       at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:151
3)
       at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1435)
       at java.io.ObjectInputStream.readClass(ObjectInputStream.java:1402)
       at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1260)
       at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:18
45)
       at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1769)
       at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
646)
       at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
       at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
       at java.util.HashMap.readObject(HashMap.java:1006)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:324)
       at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:838
)
       at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1746)
       at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
646)
       at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
       at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:18
45)
       at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1769)
       at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
646)
       at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
       at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
       at org.apache.commons.lang.SerializationUtils.deserialize(SerializationU
tils.java:199)
       ... 4 more
So, java.lang.ClassNotFoundException occurs. But Domain.class is in
the same directory with test_copyOfGlobalRepository. class ! At
http://db.apache.org/ojb/api/org/apache/ojb/broker/metadata/MetadataManager.html
info wery poor... How can I use MetadataManager.copyOfGlobalRepository
?
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