Re: Element comparison in XML document

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]>

> 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 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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