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XML -- Technologien, Grundlagen, Validierung, Auswertung
book

XML -- Technologien, Grundlagen, Validierung, Auswertung

by Wilfried Grupe
May 2018
Intermediate to advanced
680 pages
15h 54m
German
mitp Verlag
Content preview from XML -- Technologien, Grundlagen, Validierung, Auswertung

XQuery: Arbeiten mit XML-Input

Die Inhalte der XML-Input-Elemente können mit ./text() ausgewertet werden. Erfolgt das nicht, so wird der jeweilige Element-Node übernommen, an dem der Textnode als Child hängt.

Das folgende XQuery-Beispiel listet via XPath alle XML-Elemente Ort auf und transformiert sie in Stadt-Elemente. Dabei wird aus dem ursprünglichen Childnode id ein Attribut id.


<erg>
{
  for $o in /Orte/Ort return 
    <Stadt id="{$o/id/text()}">     
      {$o/name}
    </Stadt>
}
</erg>

Das Resultat:


<erg>
  <Stadt id="1">
    <name>Neustadt</name>
  </Stadt>
  <Stadt id="2">
    <name>Darmstadt</name>
  </Stadt>
  <Stadt id="3">
    <name>Kapstadt</name>
  </Stadt>
</erg>

Aus Gründen syntaktischer Korrektheit habe ich hier direkt auf den text()-Inhalt zugegriffen, obwohl auch ein ...

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Publisher Resources

ISBN: 9783958457560