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Real World XML by Steven Holzner

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Using the Bag Container

You use a Bag container to indicate that a property has multiple, although unordered, values. How do you specify the multiple items in a container? You use the <rdf:li> element (modeled after the HTML <LI>, list item, element).

Here's an example: In this case, I'm indicating that the planets.html resource has multiple subjects—Mercury, Venus, Mars, and Earth:

Listing . ch18_10.rdf
 
<?xml version="1.0" ?>
<rdf:RDF
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:dc="http://www.purl.org/DC#">

    <rdf:Description about="http://www.starpowder.com/planets.html">
        <dc:Title>Planets</dc:Title>
        <dc:Creator>Nicolas Copernicus</dc:Creator>
        <dc:Type>text</dc:Type>
        <dc:Subject>
					<rdf:Bag>
					<rdf:li>Mercury</rdf:li>
					<rdf:li>Venus</rdf:li> ...

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