package com.github.hakko.musiccabinet.parser.lastfm;
import java.util.ArrayList;
import java.util.List;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import com.github.hakko.musiccabinet.domain.model.aggr.UserRecommendedArtists.RecommendedArtist;
import com.github.hakko.musiccabinet.domain.model.music.Artist;
public class UserRecommendedArtistsHandler extends DefaultHandler {
private List<RecommendedArtist> artists = new ArrayList<>();
private RecommendedArtist currentRecommendedArtist = null;
// indicates if we're interested in found data, to skip similar artists/tags/bio
private StringBuilder characterData; // used to assemble xml text passed by parser
private static final String TAG_NAME = "name";
private static final String TAG_CONTEXT = "context";
private boolean insideContext = false;
@Override
public void startElement(String uri, String localName, String qName, Attributes attributes)
throws SAXException {
characterData = new StringBuilder();
if (TAG_CONTEXT.equals(qName)) {
insideContext = true;
}
}
@Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
if (TAG_CONTEXT.equals(qName)) {
insideContext = false;
}
if (TAG_NAME.equals(qName)) {
String chars = characterData.toString();
Artist artist = new Artist(chars);
if (insideContext) {
if (currentRecommendedArtist.getContextArtist1() == null) {
currentRecommendedArtist.setContextArtist1(artist);
} else {
currentRecommendedArtist.setContextArtist2(artist);
}
} else {
artists.add(currentRecommendedArtist = new RecommendedArtist(artist));
}
}
}
@Override
public void characters(char[] ch, int start, int length) throws SAXException {
characterData.append(ch, start, length);
}
/* Variables to be exposured after parsing */
public List<RecommendedArtist> getArtists() {
return artists;
}
}