Greetings!
Is there any way to specify where namespace declarations appear in a
serialized XML document via the DOM API? The problem is that if I
construct document where root element contains child elements from
another namespace, namespace declarations are repeated for each child
element like this:
<ns1:root xmlns:ns1="urn:ns1">
<ns2:child xmlns:ns2="urn:ns2"/>
<ns2:child xmlns:ns2="urn:ns2"/>
</ns1:root>
This makes resulting XML look ugly. Especially, when embedded XML
signature block (10+ elements) is appended to the root element as a
child. I would like to specify all namespace declarations in the
top-level element, like this:
<ns1:root xmlns:ns1="urn:ns1" xmlns:ns2="urn:ns2">
<ns2:child/>
<ns2:child/>
</ns1:root>
I use following code to construct and serialize document given above:
---8<-------------------------------------
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.newDocument();
Element root = document.createElementNS( "urn:ns1", "ns:root" );
document.appendChild( root );
root.appendChild( document.createElementNS( "urn:ns2", "ns2:child" ) );
root.appendChild( document.createElementNS( "urn:ns2", "ns2:child" ) );
// now serialize the document using DOM level 3 capabilities
DOMImplementationRegistry registry =
DOMImplementationRegistry.newInstance();
DOMImplementationLS impl =
( DOMImplementationLS ) registry.getDOMImplementation( "LS" );
LSSerializer writer = impl.createLSSerializer();
writer.getDomConfig().setParameter( "format-pretty-print", true );
LSOutput output = impl.createLSOutput();
output.setByteStream( System.out );
writer.write( document, output );
--->8-------------------------------------
Thanks in advance!
--
Igor Lobanov
Internal Development Engineer
SWsoft, Inc.
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