--- /dev/null
+package tim.prune.function;
+
+import java.util.ArrayList;
+
+import org.xml.sax.Attributes;
+import org.xml.sax.SAXException;
+import org.xml.sax.helpers.DefaultHandler;
+
+import tim.prune.function.search.SearchResult;
+
+/**
+ * XML handler for dealing with XML returned from the OSM Overpass api,
+ * specially for the OSM Poi service
+ */
+public class SearchOsmPoisXmlHandler extends DefaultHandler
+{
+ private ArrayList<SearchResult> _pointList = null;
+ private SearchResult _currPoint = null;
+ private String _errorMessage = null;
+
+
+ /**
+ * React to the start of an XML tag
+ */
+ public void startElement(String inUri, String inLocalName, String inTagName,
+ Attributes inAttributes) throws SAXException
+ {
+ if (inTagName.equals("osm")) {
+ _pointList = new ArrayList<SearchResult>();
+ }
+ else if (inTagName.equals("node"))
+ {
+ _currPoint = new SearchResult();
+ _currPoint.setLatitude(inAttributes.getValue("lat"));
+ _currPoint.setLongitude(inAttributes.getValue("lon"));
+ }
+ else if (inTagName.equals("tag") && _currPoint != null) {
+ processTag(inAttributes);
+ }
+ super.startElement(inUri, inLocalName, inTagName, inAttributes);
+ }
+
+ /**
+ * @param inAttributes attributes to process
+ */
+ private void processTag(Attributes inAttributes)
+ {
+ String key = inAttributes.getValue("k");
+ if (key != null)
+ {
+ String value = inAttributes.getValue("v");
+ if (key.equals("name"))
+ {
+ _currPoint.setTrackName(value);
+ }
+ else if (key.equals("amenity") || key.equals("highway") || key.equals("railway"))
+ {
+ _currPoint.setPointType(value);
+ }
+ }
+ }
+
+ /**
+ * React to the end of an XML tag
+ */
+ public void endElement(String inUri, String inLocalName, String inTagName)
+ throws SAXException
+ {
+ if (inTagName.equals("node"))
+ {
+ // end of the entry
+ if (_currPoint.getTrackName() != null && !_currPoint.getTrackName().equals(""))
+ _pointList.add(_currPoint);
+ }
+ super.endElement(inUri, inLocalName, inTagName);
+ }
+
+ /**
+ * @return the list of points
+ */
+ public ArrayList<SearchResult> getPointList()
+ {
+ return _pointList;
+ }
+
+ /**
+ * @return error message, if any
+ */
+ public String getErrorMessage() {
+ return _errorMessage;
+ }
+}