adding 2 XML strings together in XQuery

Question

I'm trying to create an xml output of some items, which works perfect, though when i try to add a blabla tag in front of it fails.

I think it's rather easy, but I'm not able to find a solution.

the code i'm using:

let $data := content:sortContent(content:retrieveLastFM() union content:retrieveYoutube() union content:retrieveImgur() union content:retrieveFlickr() union content:retrieveNYTimes() union content:retrieveDiggTechnology() union content:retrieveDiggAmusement()),

$doc := <description>Blablabla</description> <items> {$data} </items>

return $doc

The following does work:

$doc := <items>{$data}</items>

Though I want a description in front of my list of items..

I hope you understand what I'm trying to reach here ;) Thanks in advance for any help!

Leo Wörteler · Accepted Answer · 2012-05-01 11:31:14Z

2

You try to assign a sequence of nodes to $doc, this has to be done explicitly via ,:

let $data := ...,
    $doc  := (<description>Blablabla</description>, <items> {$data} </items>)
return $doc

Another possibility is to wrap both nodes inside another element or a document node (as the variable name suggests anyway):

    $doc  := <doc><description>Blablabla</description><items> {$data} </items></doc>

or

    $doc  := document { <description>Blablabla</description>, <items> {$data} </items> }

answered May 1, 2012 at 11:31

Leo Wörteler

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Jens Erat · Accepted Answer · 2012-05-01 11:28:03Z

0

Your query would not output valid XML. Depending on what you want to get, there are two possibilities:

Wrap the element in some container element to return valid XML:

$doc := <container><description>Blablabla</description> <items> {$data} </items></container>

Which returns

<container>
  <description>Blablabla</description>
  <items>somedata</items>
</container>

Or you could return a sequence of XML nodes:

$doc := (<description>Blablabla</description>, <items> {$data} </items>)

Which returns

<description>Blablabla</description>
<items>1</items>
<description>Blablabla</description>
<items>2</items>
<description>Blablabla</description>
<items>3</items>

answered May 1, 2012 at 11:28

Jens Erat

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