XMLNS attribute removed by Slow Cheetah transformation - xslt

Question

I'm trying to use Slow Cheetah to transform a Windows scheduled task config file. I'm simply trying to add "repetition" node information, like so:
ORIGINAL:
<Task version="1.2" xmlns="http://schemas.microsoft.com/windows/2004/02/mit/task">
<RegistrationInfo>
<Date>2013-01-02T09:32:12.2196371</Date>
<Author>xxx</Author>
</RegistrationInfo>
<Triggers>
<CalendarTrigger>
<StartBoundary>2013-01-10T01:00:00</StartBoundary>
<Enabled>true</Enabled>
<ScheduleByDay>
<DaysInterval>1</DaysInterval>
</ScheduleByDay>
</CalendarTrigger>
</Triggers>
.....
</Task>
REQUIRED, ADDITIONAL XML
<CalendarTrigger>
<Repetition>
<Interval>PT300S</Interval>
</Repetition>
</CalendarTrigger>
To do this, I have the following transformation file:
<?xml version="1.0" encoding="utf-16" ?>
<Task version="1.2">
<Triggers>
<CalendarTrigger xdt:Transform="Insert">
<Repetition>
<Interval>PT300S</Interval>
</Repetition>
</CalendarTrigger>
</Triggers>
</Task>
The problem I'm having is that all attributes outside of the CalendarTrigger node are removed (and therefore making the resultant transformation config an invalid scheduled task format).
I have tried adding
xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform" xdt:Transform="SetAttributes" xmlns="http://schemas.microsoft.com/windows/2004/02/mit/task"
to the Task node, but the attribute is then generated at CalendarTrigger level (and I cannot put this attribute on the original, because I then get "No element in the source document matches '/Task/Triggers' ").
Any pointers?
UPDATE:
The problem seems to be isolated to the xmlns attribute; if I try to include this in the 'Task' node of the original, I get "No element in the source document matches '/Task/Triggers'" - BUT changing this attribute to 'xmlns2' works fine and produces exactly what I need (albeit with an 'xmlns2' attribute!). Is this a known limitation of Slow Cheetah? Anyone know of a potential work-around?

Answer 1

That's because your xdt:Transform="Insert" is one level to high.
This should work:
<?xml version="1.0" encoding="utf-16" ?>
<Task xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform" xmlns="http://schemas.microsoft.com/windows/2004/02/mit/task">
<Triggers>
<CalendarTrigger>
<Repetition xdt:Transform="Insert">
<Interval>PT300S</Interval>
</Repetition>
</CalendarTrigger>
</Triggers>
</Task>