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https://issues.apache.org/jira/browse/TUSCANY-3597?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Gentsch updated TUSCANY-3597:
------------------------------------

    Attachment: test.xml
                testprog.cpp

> XMLwriter drops namespace for datatype properties
> -------------------------------------------------
>
>                 Key: TUSCANY-3597
>                 URL: https://issues.apache.org/jira/browse/TUSCANY-3597
>             Project: Tuscany
>          Issue Type: Bug
>          Components: C++ SDO
>    Affects Versions: Cpp-M2
>            Reporter: Thomas Gentsch
>         Attachments: schema1.xsd, schema2.xsd, SDOXMLWriter.cpp-PATCH, 
> test.xml, testprog.cpp
>
>
> When defining XSD and XML data as attached, the resulting XML is wrong if 
> loaded and saved.
> For datatype properties with imported NS, the NS is lost if that NS is not 
> used with at least one object property.
> Example (prop3):
> In:
> ==========
> <?xml version="1.0" encoding="UTF-8"?>
> <ns1:class1 xmlns:ns1="http://ns1"; xmlns:ns2="http://ns2";>
>   <ns1:prop1>bla</ns1:prop1>
>   <ns1:prop2>
>     <ns2:prop3>blub</ns2:prop3>
>   </ns1:prop2>
> </ns1:class1>
> ==========
> Out:
> ==========
> <?xml version="1.0" encoding="UTF-8"?>
> <class1 xsi:type="tns2:class1" xmlns:tns2="http://ns1"; 
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
>  <tns2:prop1>bla</tns2:prop1>
>  <tns2:prop2>
>   <prop3>blub</prop3>
>  </tns2:prop2>
> </class1>
> ==========
> Reason is, that the XMLWriter at the beginning collects all referenced NS by 
> traversing through the entire SDO, but it skips
> datatype props.
> The fix has some performance (must compare also the NS of all datatype props) 
> impact but I could not see a better way ...

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