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Re: RE: [jdom-interest] getChildren problem

zongo46

2007-09-26


Hi Rolf, thanks for your help. It works now. The different namespaces are intentional (though the XML is not from me). The children of "Post" are again in other namespaces, e.g. Dublin Core.

Best, -P-


-------- Original-Nachricht --------
> Datum: Wed, 26 Sep 2007 10:16:38 -0400
> Von: rolf.lear@(protected)
> An: zongo46@(protected)
> Betreff: RE: [jdom-interest] getChildren problem

> See:
> http://www.jdom.org/docs/apidocs/org/jdom/Element.html#getChildren(java.lang.String)
>
> Especially the part wherre it says it gets Child Elements which have no
> namespace.
>
> Your XML document has a default namespace (which is not the 'no
> namespace') of "http://www.connotea.org/2005/01/schema#", so, you need to use the
> second form of getChildren (String, Namespace) with the arguments:
>
> posts = element.getChildren("Post",
> Namespace.getNamespace("http://www.connotea.org/2005/01/schema#"));
>
> Also, it is probably intentional, but I just want to confirm that the root
> element RDF is supposed to be in a different namespace than the child
> element Post?
>
> Rolf
>
>
> -----Original Message-----
> From: jdom-interest-bounces@(protected)
> [mailto:jdom-interest-bounces@(protected)
> Sent: Wednesday, September 26, 2007 5:32 AM
> To: jdom-interest@(protected)
> Subject: [jdom-interest] getChildren problem
>
>
> hello together,
> I got a strange problem with getChildren(). i get the following xml
> inputstream by a http GET request:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
> xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/"
> xmlns:prism="http://prismstandard.org/namespaces/1.2/basic/"
> xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns="http://www.connotea.org/2005/01/schema#">
>  
>  <Post rdf:about="A_URL">
>  <!-- more elements here -->
>  </Post>
>  
> </rdf:RDF>
>
> my sendRequest() method returns the above xml as a String. From that
> String I build a Document:
>
> String in = sendRequest();
> SAXBuilder parser = new SAXBuilder();
> Document doc = parser.build(new InputSource(new StringReader(in)));
>
> Then I search for the child "Post" of the root element:
>
> List posts = doc.getRootElement().getChildren("Post");
> System.out.println(posts.size()); // output: 0
>
> There is no child "Post"? I think there should be. I tested the following:
>
> List posts = doc.getRootElement().getChildren();
> Element el = (Element)posts.get(0);
> System.out.println(el.getName()); // output: Post
>
> The first output says there is no child post of the root element, the
> second output says that the first child of root element is named "Post". What's
> wrong here?
>
> Thank you in advance! -P-
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