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POAndroid sax with rdf
 

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  1. POAndroid sax with rdf
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    <p>i try to parse an rdf file using android.sax and android.utils.Xml methods. My parser ouputs nothing and don't send any exception.</p> <p>RDF file:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;?xml-stylesheet type="text/xsl" media="screen" href="/~d/styles/rss1full.xsl"?&gt; &lt;?xml-stylesheet type="text/css" media="screen" href="http://feeds.feedburner.com/~d/styles/itemcontent.css"?&gt; &lt;rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:sy="http://purl.org/rss/1.0/modules/syndication/" xmlns:admin="http://webns.net/mvcb/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns="http://purl.org/rss/1.0/" xmlns:feedburner="http://rssnamespace.org/feedburner/ext/1.0"&gt; &lt;channel rdf:about="http://www.olympique-et-lyonnais.com/"&gt; &lt;title&gt;OL Blog | Olympique et Lyonnais&lt;/title&gt; &lt;description /&gt; &lt;link&gt;http://www.olympique-et-lyonnais.com/&lt;/link&gt; &lt;dc:language&gt;fr&lt;/dc:language&gt; &lt;dc:creator /&gt; &lt;dc:rights /&gt; &lt;dc:date&gt;2010-06-01T23:23:50+02:00&lt;/dc:date&gt; &lt;admin:generatorAgent rdf:resource="http://www.dotclear.net/" /&gt; &lt;sy:updatePeriod&gt;daily&lt;/sy:updatePeriod&gt; &lt;sy:updateFrequency&gt;1&lt;/sy:updateFrequency&gt; &lt;sy:updateBase&gt;2010-06-01T23:23:50+02:00&lt;/sy:updateBase&gt; &lt;items&gt; ... &lt;/items&gt; &lt;atom10:link xmlns:atom10="http://www.w3.org/2005/Atom" rel="self" type="application/rdf+xml" href="http://feeds.feedburner.com/oetl" /&gt;&lt;feedburner:info uri="oetl" /&gt;&lt;atom10:link xmlns:atom10="http://www.w3.org/2005/Atom" rel="hub" href="http://pubsubhubbub.appspot.com/" /&gt; &lt;/channel&gt; &lt;item rdf:about="http://www.olympique-et-lyonnais.com/ligue-1/la-toul-ce-tlier,4513.html"&gt; &lt;title&gt;La Toul, ce tôlier&lt;/title&gt; &lt;link&gt;http://feedproxy.google.com/~r/oetl/~3/RycUlTDp3eY/la-toul-ce-tlier,4513.html&lt;/link&gt; &lt;dc:date&gt;2010-06-01T23:23:50+02:00&lt;/dc:date&gt; &lt;dc:language&gt;fr&lt;/dc:language&gt; &lt;dc:creator&gt;Aurelien&lt;/dc:creator&gt; &lt;dc:subject&gt;Ligue 1&lt;/dc:subject&gt; &lt;description&gt;Décidément très bavard ces derniers temps notamment dans la presse, Jean-Michel Aulas n'a pas seulement livré le plan de recrutement de l'OL, il a aussi parlé de certains joueurs actuellement en place au club et de leur avenir. Le président est notamment...&lt;/description&gt; &lt;content:encoded&gt;&lt;![CDATA[D&amp;eacute;cid&amp;eacute;ment tr&amp;egrave;s bavard ces derniers temps notamment dans la presse, Jean-Michel Aulas n'a pas seulement livr&amp;eacute; le plan de recrutement de l'OL, il a aussi parl&amp;eacute; de certains joueurs actuellement en place au club et de leur avenir. Le pr&amp;eacute;sident est notamment...&lt;img src="http://feeds.feedburner.com/~r/oetl/~4/RycUlTDp3eY" height="1" width="1"/&gt;]]&gt;&lt;/content:encoded&gt; &lt;feedburner:origLink&gt;http://www.olympique-et-lyonnais.com/ligue-1/la-toul-ce-tlier,4513.html&lt;/feedburner:origLink&gt;&lt;/item&gt; ... &lt;/rdf:RDF&gt; </code></pre> <p>my parser:</p> <pre><code>static final String RDF_NAMESPACE = "http://www.w3.org/1999/02/22-rdf-syntax-ns#"; static final String ATOM_NAMESPACE = "http://www.w3.org/2005/Atom"; static final String RSS_NAMESPACE = ""; try{ RootElement root; Element itemlist; Element item; String namespace; if(feedsTypes[i].equals("RDF")){ Log.i(TAG, "RDF feed"); namespace = RDF_NAMESPACE; root = new RootElement(RDF_NAMESPACE, feedsTypes[i]); item = root.getChild(RDF_NAMESPACE, ITEM); } else{ Log.i(TAG, "RSS feed"); namespace = RSS_NAMESPACE; root = new RootElement(RSS_NAMESPACE, feedsTypes[i]); itemlist = root.getChild(RSS_NAMESPACE, CHANNEL); item = itemlist.getChild(RSS_NAMESPACE, ITEM); } item.setStartElementListener(new StartElementListener(){ @Override public void start(Attributes attributes) { Log.i(TAG, "item///"); } }); item.setEndElementListener(new EndElementListener(){ public void end() { Log.i(TAG, "///item"); messages.add(currentMessage.copy()); } }); item.getChild(namespace, TITLE).setEndTextElementListener(new EndTextElementListener(){ public void end(String body) { Log.i(TAG, body); currentMessage.setTitle(body); } }); Xml.parse(this.getInputStream(), Xml.Encoding.UTF_8, root.getContentHandler()); } catch(Exception e){ Log.w(TAG, e.getMessage()); } </code></pre> <p>Is there someone who can tell me what i'm doing wrong ?</p>
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    1. COif you are parsing arbitrary RDF then using an RDF/XML parser (and not a generic XML parser) is strongly advised. though this example is RSS-like (hence the structure of XML is more predictable than for arbitrary RDF) and parsing it by XML parser might be fine.
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      1. POAndroid sax with rdf
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