Examples with ElementTree net.simon04.jelementtree.ElementTree used on opensource projects

Example 1 with ElementTree

use of net.simon04.jelementtree.ElementTree in project opennms by OpenNMS.

the class MapquestGeocoder method geocode.

/**
 * {@inheritDoc}
 */
@Override
public GWTLatLng geocode(final String geolocation) throws GeocoderException {
    final HttpUriRequest method = new HttpGet(getUrl(geolocation));
    method.addHeader("User-Agent", "OpenNMS-MapQuestGeocoder/1.0");
    method.addHeader("Referer", m_referer);
    try {
        InputStream responseStream = m_httpClient.execute(method).getEntity().getContent();
        final ElementTree tree = ElementTree.fromStream(responseStream);
        if (tree == null) {
            throw new GeocoderException("an error occurred connecting to the MapQuest geocoding service (no XML tree was found)");
        }
        final ElementTree statusCode = tree.find("//statusCode");
        if (statusCode == null || !statusCode.getText().equals("0")) {
            final String code = (statusCode == null ? "unknown" : statusCode.getText());
            final ElementTree messageTree = tree.find("//message");
            final String message = (messageTree == null ? "unknown" : messageTree.getText());
            throw new GeocoderException("an error occurred when querying MapQuest (statusCode=" + code + ", message=" + message + ")");
        }
        final List<ElementTree> locations = tree.findAll("//location");
        if (locations.size() > 1) {
            LOG.warn("more than one location returned for query: {}", geolocation);
        } else if (locations.size() == 0) {
            throw new GeocoderException("MapQuest returned an OK status code, but no locations");
        }
        final ElementTree location = locations.get(0);
        // first, check the quality
        if (m_minimumQuality != null) {
            final Quality geocodeQuality = Quality.valueOf(location.find("//geocodeQuality").getText().toUpperCase());
            if (geocodeQuality.compareTo(m_minimumQuality) < 0) {
                throw new GeocoderException("response did not meet minimum quality requirement (" + geocodeQuality + " is less specific than " + m_minimumQuality + ")");
            }
        }
        // then, extract the lat/lng
        final ElementTree latLng = location.find("//latLng");
        Double latitude = Double.valueOf(latLng.find("//lat").getText());
        Double longitude = Double.valueOf(latLng.find("//lng").getText());
        return new GWTLatLng(latitude, longitude);
    } catch (GeocoderException e) {
        throw e;
    } catch (Throwable e) {
        throw new GeocoderException("unable to get lat/lng from MapQuest", e);
    }
}

Example 2 with ElementTree

use of net.simon04.jelementtree.ElementTree in project opennms by OpenNMS.

the class NominatimGeocoder method geocode.

/**
 * {@inheritDoc}
 */
@Override
public GWTLatLng geocode(final String geolocation) throws GeocoderException {
    final HttpUriRequest method = new HttpGet(getUrl(geolocation));
    method.addHeader("User-Agent", "OpenNMS-MapquestGeocoder/1.0");
    if (m_referer != null) {
        method.addHeader("Referer", m_referer);
    }
    CloseableHttpResponse response = null;
    try {
        response = m_clientWrapper.execute(method);
        InputStream responseStream = response.getEntity().getContent();
        final ElementTree tree = ElementTree.fromStream(responseStream);
        if (tree == null) {
            throw new GeocoderException("an error occurred connecting to the Nominatim geocoding service (no XML tree was found)");
        }
        final List<ElementTree> places = tree.findAll("//place");
        if (places.size() > 1) {
            LOG.warn("more than one location returned for query: {}", geolocation);
        } else if (places.size() == 0) {
            throw new GeocoderException("Nominatim returned an OK status code, but no places");
        }
        final ElementTree place = places.get(0);
        Double latitude = Double.valueOf(place.getAttribute("lat"));
        Double longitude = Double.valueOf(place.getAttribute("lon"));
        return new GWTLatLng(latitude, longitude);
    } catch (GeocoderException e) {
        throw e;
    } catch (Throwable e) {
        throw new GeocoderException("unable to get lat/lng from Nominatim", e);
    } finally {
        m_clientWrapper.close(response);
    }
}

Example 3 with ElementTree

use of net.simon04.jelementtree.ElementTree in project opennms by OpenNMS.

the class NominatimGeocoderService method getCoordinates.

@Override
public Coordinates getCoordinates(final String address) throws GeocoderException {
    final HttpUriRequest method = new HttpGet(getUrl(address));
    method.addHeader("User-Agent", "OpenNMS-NominatimGeocoderService/1.0");
    if (m_referer != null && !"".equals(m_referer)) {
        method.addHeader("Referer", m_referer);
    }
    InputStream responseStream = null;
    CloseableHttpResponse response = null;
    try {
        response = m_clientWrapper.execute(method);
        final StatusLine statusLine = response.getStatusLine();
        if (statusLine.getStatusCode() != 200) {
            throw new GeocoderException("Nominatim returned a non-OK response code: " + statusLine.getStatusCode() + " " + statusLine.getReasonPhrase());
        }
        responseStream = response.getEntity().getContent();
        final ElementTree tree = ElementTree.fromStream(responseStream);
        if (tree == null) {
            throw new GeocoderException("an error occurred connecting to the Nominatim geocoding service (no XML tree was found)");
        }
        final List<ElementTree> places = tree.findAll("//place");
        if (places.size() > 1) {
            m_log.warn("More than one location returned for query: {}", address);
        } else if (places.size() == 0) {
            throw new GeocoderException("Nominatim returned an OK status code, but no places");
        }
        final ElementTree place = places.get(0);
        final Float longitude = Float.valueOf(place.getAttribute("lon"));
        final Float latitude = Float.valueOf(place.getAttribute("lat"));
        return new Coordinates(longitude, latitude);
    } catch (final GeocoderException e) {
        throw e;
    } catch (final Throwable e) {
        throw new GeocoderException("unable to get lon/lat from Nominatim", e);
    } finally {
        IOUtils.closeQuietly(responseStream);
        m_clientWrapper.close(response);
    }
}