Comma-delimited string to XML

tokenize function will help you do that, here is an example.

<mashup xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://www.jackbe.com/2008-03-01/EMMLSchema ../src/schemas/EMMLSpec.xsd"
        xmlns="http://www.jackbe.com/2008-03-01/EMMLSchema"
        name="string2XML">
    <operation name="convert">
        <input name="records" type="string" default="foo1,foo2,foo3"/>
        <output name="result" type="document">
                <items/>
        </output>
          <foreach variable="token" items="tokenize($records, ',')">
                <annotate variable="result" expr=".">
                        element item {$token}
                </annotate>
          </foreach>
    </operation>
</mashup>

This is a great example.  Thank you very much.

I'm stuck on another item.  The processing I'm doing in the above foreach is to call another mashup I wrote.  That works fine, it brings back the result, which is something like <xml> <item>foo1</item> ( yes, a single item ).  

So after some looping of foreach, I may have 3 of these item nodes appended.

Problem is the way I'm doing it now, I have a parent node being created after each loop, so it's like:

<newitem><item>foo1</item></newitem><newitem><item>foo2</item></newitem><newitem><item>foo3</item></newitem>

Is there a way to strip the outer node from each result?

If I just put the $result in the append, without an element node, it does not run.

Sorry if this is confusing. Thanks in advance.

What you can do is to put the wrapping document node in the variable before you call <appendresult>. Something like this: 

<variable name="myitems type="document>
<newitems/>
</variable>

<foreach ....>
...
  <appendresult outputvariable="myitems">
    <item>{$tokenize-result}</item>
  </appendresult>
...
</foreach>

You should get:

<newitems>
  <item>foo1</item>
  <item>bar2</item>
  ...
</newitems>