X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=tim%2Fprune%2Ffunction%2FSearchOsmPoisXmlHandler.java;fp=tim%2Fprune%2Ffunction%2FSearchOsmPoisXmlHandler.java;h=5683ece37da8f6aeec4dcf9ed250a2da2a3d2c42;hp=0000000000000000000000000000000000000000;hb=92dad5df664287acb51728e9ea599f150765d34a;hpb=81843c3d8d0771bf00d0f26034a13aa515465c78

diff --git a/tim/prune/function/SearchOsmPoisXmlHandler.java b/tim/prune/function/SearchOsmPoisXmlHandler.java
new file mode 100644
index 0000000..5683ece
--- /dev/null
+++ b/tim/prune/function/SearchOsmPoisXmlHandler.java
@@ -0,0 +1,92 @@
+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;
+	}
+}