Re: Element comparison in XML document

Hello Grzegorz,

Thank you.

Lighton Phiri
http://lightonphiri.org
http://en.gravatar.com/lightonphiri
Twitter: @lightonphiri


On 13/04/2012 11:08, Grzegorz wrote:
> Hello,
>
> The method "contains" you use checks if the particular Java Element 
> object exists in element list. It obviously doesn't.
>
> Use XPath with properly initialized namespaces and query
>
> //hasPart[text()='A1_4_001']
>
> or similar.
>
> Regards,
> Grzegorz
>
> 2012/4/13 Lighton Phiri <[email protected] 
> <mailto:[email protected]>>
>
>     Is there an easier way of checking if an element exists in an XML
>     file? I tried to use the List function 'contains' to do my comparison,
>     but it seems to fail; checked the Element class for appropriate
>     methods, but nothing there. The closest I came to finding something
>     similar on markmail.org <http://markmail.org> is an old article
>     [1] that isn't quite
>     helpful. The only workaround I can think of at the moment is a
>     recursive walk-through to check the textual content of each element,
>     but something tells me there has to be a built-in mechanism for doing
>     this.
>
>     Code snippet
>
>     Element hasPartNode = new Element("hasPart",
>     Namespace.getNamespace("dcterms", "http://purl.org/dc/terms/"));
>     hasPartNode.addContent("A1_4_001");
>
>     // This prints false
>     System.out.println(rootNode.getChildren("hasPart",
>     Namespace.getNamespace("dcterms",
>     "http://purl.org/dc/terms/")).contains(hasPartNode));
>
>     Input XML document
>
>     <resource xmlns:dc="http://purl.org/dc/elements/1.1/"
>     xmlns:dcterms="http://purl.org/dc/terms/">
>     <dc:title>Notebooks</dc:title>
>     <dcterms:hasPart>A1_4_001</dcterms:hasPart>
>     <dcterms:hasPart>A1_4_002</dcterms:hasPart>
>     <dcterms:hasPart>A1_4_003</dcterms:hasPart>
>     </resource>
>
>     [1] http://markmail.org/message/s7le3js7r5vub7oy
>
>     -- Phiri
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>

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