[Qt-qml] XML patterns and Namespace prefix

[Adrian Hornsby]

Hi Bea, 

Thanks for the tips, it go it to fix my problems. 
have a nice day!

adrian


On Nov 23, 2010, at 8:24 AM, <bea.lam at nokia.com> wrote:

> Hi Adrian,
> 
> On 22/11/2010, at 5:40 PM, ext adrian hornsby wrote:
> 
>> Hi all,
>> 
>> I am trying to parse an activity-stream:
>> 
>> <entry>
>> <id>tag:photopanic.example.com,2008:photo01</id>
>> <title>My Cat</title>
>> <published>2008-11-02T15:29:00Z</published>
>> <link rel="alternate" type="text/html"
>> href="/geraldine/photos/1" />
>> <activity:object-type>
>> tag:atomactivity.example.com,2008:photo
>> </activity:object-type>
>> </entry>
>> 
>> 
>> with QML XMLlistmodel and XMLrole as follows:
>> 
>> query: "/wall/entry"
>> XmlRole { name: "title"; query: "title/string()" }
>> XmlRole { name: "published"; query: "published/string()" }
>> XmlRole { name: "link"; query: "link/@href/string()" }
>> 
>> 
>> but get this error:
>> Error FODC0002 in
>> tag:trolltech.com,2007:QtXmlPatterns:QIODeviceVariable:src, at line 9,
>> column 25: Namespace prefix 'activity' not declared
> 
> 
> It looks like the XML feed does not have a namespace declared for the 'activity' prefix. The root 'wall' element should look something like this:
> 
> <wall xmlns:activity="http://www.someurl.com/something">
> 
> This xmlns attribute is probably missing from your XML and so it cannot be parsed correctly.
> 
> 
> Note that if you need to use the data within <activity:object-type> for a role, you'll need to declare the activity namespace using XmlListModel::namespaceDeclarations. For example,
> 
> 
>    XmlListModel {
>        source: ...
>        query: "/wall/entry"
>        namespaceDeclarations: "declare namespace activity = 'http://www.someurl.com/something';"
>        XmlRole { name: "objectType"; query: "activity:object-type/string()" }
>    }
> 
> 
> 
> regards,
> 
> Bea
> 
>