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https://issues.apache.org/jira/browse/XERCESJ-1720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17016217#comment-17016217
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Elliotte Rusty Harold commented on XERCESJ-1720:
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That higher level processing sounds broken. In the example you give xmlns="" is 
not different from no xmlns attribute at all. xmlns="" is only needed when 
there's a default namespace in scope and you need to remove it. 

> Generate DOM Element with empty namespace using Apache xerces 
> --------------------------------------------------------------
>
>                 Key: XERCESJ-1720
>                 URL: https://issues.apache.org/jira/browse/XERCESJ-1720
>             Project: Xerces2-J
>          Issue Type: Bug
>          Components: Documentation
>    Affects Versions: 2.8.1
>            Reporter: Vithursa
>            Priority: Minor
>              Labels: query
>
> I have a requirement to generate an XML which should have empty namespace. An 
> example XML should looks like:
> {code:xml}
> <name  xmlns:cap="http://sap.com/xi/BASIS";>      
>    <cap:attributeID>            
>       <attribute1 xmlns="" >xxxx</attribute1>            
>       <attribute2 xmlns="" >xxxx</attribute2>      
>    </cap:attributeID> 
> </name>
> {code}
>  
>  As mentioned above, I need to add *xmlns* attribute with empty string. I 
> have tried following ways to achieve it but none of them worked:
> {code:java}
> DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
> DocumentBuilder docBuilder;
> docBuilder = docFactory.newDocumentBuilder();
> Document doc = docBuilder.newDocument(); 
> element = doc.createElement("attribute1");  // It did not have any namespace. 
> Output becomes as,  <attribute1>xxxx</attribute1>.
> {code}
> {code:java}
> element = doc.createElementNS("", "name"); // Output : 
> <attribute1>xxxx</attribute1>
> {code}
> {code:java}
> element = doc.createElement("name");
> element.setAttribute("xmlns", "");  // Output : <attribute1>xxxx</attribute1>
> {code}
> {code:java}
> element = doc.createElement("name");
> element.setAttributeNS("http://www.w3.org/2000/xmlns/";, "xmlns", "");
> // Output : <attribute1>xxxx</attribute1>
> {code}
> What is the correct way of adding an empty string as namespace to cater my 
> requirement? Can someone provide guidance on this?
> Thanks,
>  Vithursa



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