private Document GetXMLDocument(String url) {
try {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
InputStream input = HTMLTools.inputStream_GET(url, 5000);
InputStreamReader reader = new InputStreamReader(input, ENCODING_UTF8);
InputSource inSrc = new InputSource(reader);
inSrc.setEncoding(ENCODING_UTF8);
return db.parse(inSrc);
} catch (ParserConfigurationException pce) {
Print.logError("Parse error: " + pce);
return null;
} catch (SAXException se) {
Print.logError("Parse error: " + se);
return null;
} catch (IOException ioe) {
Print.logError("IO error: " + ioe);
return null;
}
}
// http://code.google.com/apis/maps/documentation/geocoding/index.html
public GeoPoint getGeocode(String address, String country) {
/* URL */
String url = this.getGeoPointGeocodeURL(address, country);
Print.logDebug("Google GC URL: " + url);
/* create XML document */
Document xmlDoc = GetXMLDocument(url, this.getGeocodeTimeout());
if (xmlDoc == null) {
return null;
}
/* vars */
String errCode = null;
GeoPoint geoPoint = null;
/* parse "xml" */
Element kml = xmlDoc.getDocumentElement();
if (kml.getTagName().equalsIgnoreCase(TAG_kml)) {
NodeList ResponseList = XMLTools.getChildElements(kml, TAG_Response);
for (int g = 0; (g < ResponseList.getLength()); g++) {
Element response = (Element) ResponseList.item(g);
NodeList responseNodes = response.getChildNodes();
for (int n = 0; n < responseNodes.getLength(); n++) {
Node responseNode = responseNodes.item(n);
if (!(responseNode instanceof Element)) {
continue;
}
Element responseElem = (Element) responseNode;
String responseNodeName = responseElem.getNodeName();
if (responseNodeName.equalsIgnoreCase(TAG_name)) {
// <name>1600 Amphitheatre Parkway, Mountain View, CA</name>
} else if (responseNodeName.equalsIgnoreCase(TAG_Status)) {
// <Status> ... </Status>
NodeList statusNodes = responseElem.getChildNodes();
for (int st = 0; st < statusNodes.getLength(); st++) {
Node statusNode = statusNodes.item(st);
if (!(statusNode instanceof Element)) {
continue;
}
Element statusElem = (Element) statusNode;
String statusNodeName = statusElem.getNodeName();
if (statusNodeName.equalsIgnoreCase(TAG_code)) {
errCode = StringTools.trim(GoogleGeocodeV2.GetNodeText(statusElem)); // expect "200"
break; // we only care about the 'code'
}
}
} else if (responseNodeName.equalsIgnoreCase(TAG_Placemark)) {
// <Placemark> ... </Placemark>
String id = responseElem.getAttribute(ATTR_id);
if ((id != null) && id.equals("p1")) {
NodeList placemarkNodes = responseElem.getChildNodes();
for (int pm = 0; (geoPoint == null) && (pm < placemarkNodes.getLength()); pm++) {
Node placemarkNode = placemarkNodes.item(pm);
if (!(placemarkNode instanceof Element)) {
continue;
}
Element placemarkElem = (Element) placemarkNode;
String placemarkNodeName = placemarkElem.getNodeName();
if (placemarkNodeName.equalsIgnoreCase(TAG_Point)) {
NodeList pointNodes = placemarkElem.getChildNodes();
for (int ptn = 0; (geoPoint == null) && (ptn < pointNodes.getLength()); ptn++) {
Node pointNode = pointNodes.item(ptn);
if (!(pointNode instanceof Element)) {
continue;
}
Element pointElem = (Element) pointNode;
String pointNodeName = pointElem.getNodeName();
if (pointNodeName.equalsIgnoreCase(TAG_coordinates)) {
String ll[] = StringTools.split(GoogleGeocodeV2.GetNodeText(pointElem), ',');
if (ll.length >= 2) {
double lon = StringTools.parseDouble(ll[0], 0.0); // longitude is first
double lat = StringTools.parseDouble(ll[1], 0.0);
if (GeoPoint.isValid(lat, lon)) {
geoPoint = new GeoPoint(lat, lon);
break; // we only care about the 'GeoPoint'
}
}
}
}
}
}
} else {
// Print.logInfo("Skipping Placemark ID = %s", id);
}
}
}
}
}
/* create address */
if (geoPoint != null) {
// GeoPoint found
return geoPoint;
}
/* check for Google reverse-geocode limit exceeded */
if ((errCode != null) && errCode.equals("620")) {
Print.logError("!!!! Google Reverse-Geocode Limit Exceeded [Error 620] !!!!");
}
/* no reverse-geocode available */
return null;
}
/* return reverse-geocode using nearest address */
public ReverseGeocode getAddressReverseGeocode(GeoPoint gp, String localeStr, boolean cache) {
/* check for failover mode */
if (this.isReverseGeocodeFailoverMode()) {
ReverseGeocodeProvider frgp = this.getFailoverReverseGeocodeProvider();
return frgp.getReverseGeocode(gp, localeStr, cache);
}
/* URL */
String url = this.getAddressReverseGeocodeURL(gp, localeStr);
Print.logDebug("Google RG URL: " + url);
// byte xmlBytes[] = HTMLTools.readPage(url);
/* create XML document */
Document xmlDoc = GetXMLDocument(url, this.getReverseGeocodeTimeout());
if (xmlDoc == null) {
return null;
}
/* vars */
String errCode = null;
String address = null;
/* parse "xml" */
Element kml = xmlDoc.getDocumentElement();
if (kml.getTagName().equalsIgnoreCase(TAG_kml)) {
NodeList ResponseList = XMLTools.getChildElements(kml, TAG_Response);
for (int g = 0; (g < ResponseList.getLength()); g++) {
Element response = (Element) ResponseList.item(g);
NodeList responseNodes = response.getChildNodes();
for (int n = 0; n < responseNodes.getLength(); n++) {
Node responseNode = responseNodes.item(n);
if (!(responseNode instanceof Element)) {
continue;
}
Element responseElem = (Element) responseNode;
String responseNodeName = responseElem.getNodeName();
if (responseNodeName.equalsIgnoreCase(TAG_name)) {
// <name>40.479581,-117.773438</name>
} else if (responseNodeName.equalsIgnoreCase(TAG_Status)) {
// <Status> ... </Status>
NodeList statusNodes = responseElem.getChildNodes();
for (int st = 0; st < statusNodes.getLength(); st++) {
Node statusNode = statusNodes.item(st);
if (!(statusNode instanceof Element)) {
continue;
}
Element statusElem = (Element) statusNode;
String statusNodeName = statusElem.getNodeName();
if (statusNodeName.equalsIgnoreCase(TAG_code)) {
errCode = StringTools.trim(GoogleGeocodeV2.GetNodeText(statusElem)); // expect "200"
break; // we only care about the 'code'
}
}
} else if (responseNodeName.equalsIgnoreCase(TAG_Placemark)) {
// <Placemark> ... </Placemark>
String id = responseElem.getAttribute(ATTR_id);
if ((id != null) && id.equals("p1")) {
NodeList placemarkNodes = responseElem.getChildNodes();
for (int pm = 0; pm < placemarkNodes.getLength(); pm++) {
Node placemarkNode = placemarkNodes.item(pm);
if (!(placemarkNode instanceof Element)) {
continue;
}
Element placemarkElem = (Element) placemarkNode;
String placemarkNodeName = placemarkElem.getNodeName();
if (placemarkNodeName.equalsIgnoreCase(TAG_address)) {
address = GoogleGeocodeV2.GetNodeText(placemarkElem);
break; // we only care about the 'address'
}
}
} else {
// Print.logInfo("Skipping Placemark ID = %s", id);
}
}
}
}
}
/* create address */
if (FAILOVER_DEBUG) {
errCode = "620";
} else if (!StringTools.isBlank(address)) {
// address found
ReverseGeocode rg = new ReverseGeocode();
rg.setFullAddress(address);
return rg;
}
/* check for Google reverse-geocode limit exceeded */
if ((errCode != null) && errCode.equals("620")) {
Print.logError("!!!! Google Reverse-Geocode Limit Exceeded [Error 620] !!!!");
if (this.hasFailoverReverseGeocodeProvider()) {
this.startReverseGeocodeFailoverMode();
ReverseGeocodeProvider frgp = this.getFailoverReverseGeocodeProvider();
Print.logWarn("Failing over to '" + frgp.getName() + "'");
return frgp.getReverseGeocode(gp, localeStr, cache);
}
}
/* no reverse-geocode available */
return null;
}