traininfo/provider/XmlDepartureProvider.java

package dk.thoerup.traininfo.provider;

import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;

import android.util.Log;
import dk.thoerup.traininfo.DepartureBean;
import dk.thoerup.traininfo.util.DownloadUtil;

public class XmlDepartureProvider extends DefaultHandler implements DepartureProvider {

        ArrayList<DepartureBean> departures = new ArrayList<DepartureBean>();
        
        
        DepartureBean tempDeparture;
        StringBuilder builder = new StringBuilder(512);
        
        @Override
        public void lookupDepartures(String stationCode) {
                departures.clear();
                try
                {       
                        String url = "http://t-hoerup.dk/tog/xml_display.php?stationcode="+stationCode;
                        Log.i("xmlurl",url);
                        String doc =  DownloadUtil.getContentString(url, 45000, "ISO-8859-1");
                        
                        InputSource source = new InputSource( new StringReader(doc));
                        
                        SAXParserFactory spf = SAXParserFactory.newInstance();
            SAXParser sp = spf.newSAXParser();
            XMLReader xr = sp.getXMLReader();

                        xr.setContentHandler(this);
                        xr.setErrorHandler(this);
                        xr.setDTDHandler(this);
                        xr.parse(source);
                } catch (Exception e) {
                        Log.e("XmlDepartureProvider", "looupFunction", e);
                }
        }
        
        @Override
        public List<DepartureBean> getDepartures() {
                return departures;
        }
        
        // this can be called several times fore the same text-node if there are many chardata / lines
        @Override
        public void characters (char ch[], int start, int length) 
        {               
                for (int i= start; i<start+length; i++)
                        builder.append(ch[i]);  
        }
        
        @Override
        public void startElement (String uri, String name, String qName, Attributes atts)throws SAXException
        {
                if (name.equalsIgnoreCase("train"))
                        tempDeparture = new DepartureBean();
                
                builder.setLength(0); //reset StringBuilder
        }
        
        @Override
        public void endElement (String uri, String name, String qName) throws SAXException
        {
                if (name.equals("train")) {
                        departures.add( tempDeparture );
                } else if (name.equals("time")) {
                        tempDeparture.setTime(builder.toString().trim());
                } else if (name.equals("updated")) {
                        tempDeparture.setLastUpdate(builder.toString().trim());
                } else if (name.equals("trainnumber")) {
                        tempDeparture.setTrainNumber(builder.toString().trim());
                } else if (name.equals("destination")) {
                        tempDeparture.setDestination(builder.toString().trim());
                } else if (name.equals("origin")) {
                        tempDeparture.setOrigin(builder.toString().trim());
                } else if (name.equals("location")) {
                        tempDeparture.setLocation(builder.toString().trim());
                } else if (name.equals("status")) {
                        tempDeparture.setStatus(builder.toString().trim());
                } else if (name.equals("note")) {
                        tempDeparture.setNote(builder.toString().trim());
                } 
        }
}
1	torben	237	package dk.thoerup.traininfo.provider;
2
3			import java.io.StringReader;
4			import java.util.ArrayList;
5			import java.util.List;
6
7			import javax.xml.parsers.SAXParser;
8			import javax.xml.parsers.SAXParserFactory;
9
10			import org.xml.sax.Attributes;
11			import org.xml.sax.InputSource;
12			import org.xml.sax.SAXException;
13			import org.xml.sax.XMLReader;
14			import org.xml.sax.helpers.DefaultHandler;
15
16			import android.util.Log;
17			import dk.thoerup.traininfo.DepartureBean;
18	torben	238	import dk.thoerup.traininfo.util.DownloadUtil;
19	torben	237
20			public class XmlDepartureProvider extends DefaultHandler implements DepartureProvider {
21
22			ArrayList<DepartureBean> departures = new ArrayList<DepartureBean>();
23
24
25			DepartureBean tempDeparture;
26			StringBuilder builder = new StringBuilder(512);
27
28			@Override
29	torben	294	public void lookupDepartures(String stationCode) {
30	torben	237	departures.clear();
31			try
32	torben	294	{
33			String url = "http://t-hoerup.dk/tog/xml_display.php?stationcode="+stationCode;
34			Log.i("xmlurl",url);
35	torben	283	String doc = DownloadUtil.getContentString(url, 45000, "ISO-8859-1");
36	torben	237
37			InputSource source = new InputSource( new StringReader(doc));
38
39			SAXParserFactory spf = SAXParserFactory.newInstance();
40			SAXParser sp = spf.newSAXParser();
41			XMLReader xr = sp.getXMLReader();
42
43			xr.setContentHandler(this);
44			xr.setErrorHandler(this);
45			xr.setDTDHandler(this);
46			xr.parse(source);
47			} catch (Exception e) {
48			Log.e("XmlDepartureProvider", "looupFunction", e);
49			}
50			}
51
52			@Override
53			public List<DepartureBean> getDepartures() {
54			return departures;
55			}
56
57			// this can be called several times fore the same text-node if there are many chardata / lines
58			@Override
59			public void characters (char ch[], int start, int length)
60			{
61			for (int i= start; i<start+length; i++)
62			builder.append(ch[i]);
63			}
64
65			@Override
66			public void startElement (String uri, String name, String qName, Attributes atts)throws SAXException
67			{
68			if (name.equalsIgnoreCase("train"))
69			tempDeparture = new DepartureBean();
70
71			builder.setLength(0); //reset StringBuilder
72			}
73
74			@Override
75			public void endElement (String uri, String name, String qName) throws SAXException
76			{
77			if (name.equals("train")) {
78			departures.add( tempDeparture );
79			} else if (name.equals("time")) {
80	torben	244	tempDeparture.setTime(builder.toString().trim());
81	torben	237	} else if (name.equals("updated")) {
82	torben	244	tempDeparture.setLastUpdate(builder.toString().trim());
83	torben	237	} else if (name.equals("trainnumber")) {
84	torben	244	tempDeparture.setTrainNumber(builder.toString().trim());
85	torben	237	} else if (name.equals("destination")) {
86	torben	244	tempDeparture.setDestination(builder.toString().trim());
87	torben	237	} else if (name.equals("origin")) {
88	torben	244	tempDeparture.setOrigin(builder.toString().trim());
89	torben	237	} else if (name.equals("location")) {
90	torben	244	tempDeparture.setLocation(builder.toString().trim());
91	torben	237	} else if (name.equals("status")) {
92	torben	244	tempDeparture.setStatus(builder.toString().trim());
93	torben	237	} else if (name.equals("note")) {
94	torben	244	tempDeparture.setNote(builder.toString().trim());
95	torben	237	}
96			}
97			}