nodeFactory.getNoNamespace() returns null

Hi,

I am trying to run the DocumentHelperTest example, but am getting a 
NullPointerException. It has to do with creating attributes. I have 
tried to track down the problem, but don't know what can be done to fix 
it...

Here is the client output:
========================================
D:\Eclipse\eclipse\workspace\ozone\modules\xml\dom4j\build\classes>java 
-classpa
th 
.;..\..\..\..\..\server\build\lib\junit.jar;..\..\..\..\..\server\build\lib\o
zoneServer-1.2-post_alpha.jar;..\dist\jaxen-core.jar 
test.ozoneDB.xml.dom4j.Docu
mentHelperTest
looking for OzoneDocumentFactory instance (DocumentFactory) for database 
RemoteD
atabase: localhost, 3333
returning factory class 
org.ozoneDB.xml.dom4j.o3impl.OzoneDocumentFactoryImpl_Pr
oxy remoteID:104
[DocumentHelperTest] - Refetching
[DocumentHelperTest] - doc is class 
org.ozoneDB.xml.dom4j.o3impl.OzoneDocumentIm
pl_Proxy remoteID:108
[DocumentHelperTest] - Here's the content:
<?xml version="1.0" encoding="UTF-8"?>

[DocumentHelperTest] - Created test element class 
org.ozoneDB.xml.dom4j.o3impl.O
zoneElementImpl_Proxy remoteID:30114
[DocumentHelperTest] - adding content to element
[DocumentHelperTest] - testElem.getName() test
[DocumentHelperTest] - testElem test associated with document!
[DocumentHelperTest] - getNamespace = 
org.dom4j.tree.AbstractNamespace@babe [Abs
tractNamespace: prefix  mapped to URI ""]
[DocumentHelperTest] - Here's the content:
<?xml version="1.0" encoding="UTF-8"?>
<test>some text</test>
Comment added to testElem
[DocumentHelperTest] - Here's the content:
<?xml version="1.0" encoding="UTF-8"?>
<test>some text<!--Comment text...--></test>
Comment added to Document
========================================

It hangs after "Comment added to Document", so the problem occurs during 
this line in DocumentHelperTest:
            QName name = O3DocumentHelper.createQName("name");
            System.out.println("Created qname");

Here is the server output:
========================================
(Ctrl-C or 'q' to shutdown without admin tool)
class org.ozoneDB.xml.dom4j.o3impl.O3QNameCache O3QNameCache constructor 
invoked

class org.ozoneDB.xml.dom4j.o3impl.O3QNameCache O3QNameCache constructor 
invoked

[OzoneElementImpl] Creating new object
class org.ozoneDB.xml.dom4j.o3impl.O3QNameCache O3QNameCache constructor 
invoked

class org.ozoneDB.xml.dom4j.o3impl.O3QNameCache O3QNameCache constructor 
invoked

createQName(name)
looking for OzoneDocumentFactory instance (DocumentFactory) for database 
org.ozo
neDB.Database@170888e
returning factory class 
org.ozoneDB.xml.dom4j.o3impl.OzoneDocumentFactoryImpl_Pr
oxy remoteID:104
In cache: org.ozoneDB.xml.dom4j.o3impl.O3QName@337a8b [name: name 
namespace: "nu
ll"]
WARN   [Thread-4] InvokeServer - handleClientEvent(): 
java.lang.NullPointerExcep
tion
java.lang.NullPointerException
        at 
org.ozoneDB.xml.dom4j.o3impl.DefaultQName.writeObject(DefaultQName.ja
va:198)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)
        at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
        at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)
        at java.io.ObjectOutputStream.writeObject0(Unknown Source)
        at java.io.ObjectOutputStream.writeObject(Unknown Source)
        at org.ozoneDB.DxLib.net.DxClient.send(Unknown Source)
        at org.ozoneDB.core.InvokeServer.handleClientEvent(Unknown Source)
        at org.ozoneDB.DxLib.net.DxMultiServerClient.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
========================================

The reason is the namespace is null in 
DefaultQName.writeObject(ObjectOutputStream out).

That is null because nodeFactory.getNoNamespace() returns null.

That is null because NamespaceCacheImpl.createNamespace(String prefix, 
String uri) has not yet been implemented:

    /** A factory method to create {@link AbstractNamespace} instance
     * @return a newly created {@link Namespace} instance.
     */
    protected Namespace createNamespace(String prefix, String uri) {
        throw new RuntimeException("FIXME - should NamespaceCacheImpl 
become a real OzoneObject or whould db be passed?");
        //return O3Namespace.create(db, prefix, uri);
    }

What can I do to fix this?

Thanks in advance,
Evert



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