<%--
-Copyright (C) 2004-2006 Autodesk, Inc.
-This library is free software; you can redistribute it and/or
-modify it under the terms of version 2.1 of the GNU Lesser
-General Public License as published by the Free Software Foundation.
-This library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Lesser General Public License for more details.
-You should have received a copy of the GNU Lesser General Public
-License along with this library; if not, write to the Free Software
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
--%>
<%@ page import="org.osgeo.mapguide.*" %>
<%@ page import="java.util.*" %>
<%@ page import="java.io.*" %>
<%@ page import="java.net.*" %>
<%@ page import="javax.xml.parsers.*" %>
<%@ page import="javax.xml.transform.*" %>
<%@ page import="javax.xml.transform.dom.*" %>
<%@ page import="javax.xml.transform.stream.*" %>
<%@ page import="org.w3c.dom.*" %>
<%!
private class GeocodeAddress
{
public GeocodeAddress()
{
address1 = "";
address2 = "";
lat = "";
lon = "";
}
public String address1;
public String address2;
public String lat;
public String lon;
}
void EmitAddressResults(JspWriter out, MgFeatureService featureService, MgResourceIdentifier addressMarkerDataResId, String mgSessionId) throws MgException, Exception
{
out.write("<table class=\"RegText\" border=\"0\" cellspacing=\"0\" width=\"100%\">");
out.write("<tr><td class=\"SubTitle\">Previous Results</td></tr>");
MgAgfReaderWriter geometryReaderWriter = new MgAgfReaderWriter();
MgFeatureReader featureReader = (MgFeatureReader)featureService.SelectFeatures(addressMarkerDataResId, "AddressMarker", null);
while (featureReader.ReadNext())
{
String address = featureReader.GetString("Address");
MgByteReader byteReader = featureReader.GetGeometry("Location");
MgPoint point = (MgPoint)geometryReaderWriter.Read(byteReader);
double x = point.GetCoordinate().GetX();
double y = point.GetCoordinate().GetY();
out.write("<tr><td>");
out.write("<img src=\"../images/pushpinblue.jpg\">");
out.write("<a href=\"gotopoint.jsp?X=" + x + "&Y=" + y + "&Scale=2000\" target=\"scriptFrame\"> " + address + "</a></td></tr>");
}
featureReader.Close();
out.write("</table>");
out.write("<form action=\"clearaddressresults.jsp\" method=\"get\" target=\"scriptFrame\">");
out.write("<input type=\"hidden\" name=\"SESSION\" value=\"" + mgSessionId + "\">");
out.write("<input type=\"button\" class=\"Ctrl\" value=\"Clear Results\" onClick=\"javascript:submit()\">");
out.write("</form>");
out.write("<hr>");
}
// Create a temporary Feature Source to store geocode results.
void CreateAddressMarkerFeatureSource(MgFeatureService featureService, MgResourceIdentifier addressMarkerDataResId) throws MgException
{
String ll84Wkt = "GEOGCS[\"WGS84 Lat/Long's, Degrees, -180 ==> +180\",DATUM[\"D_WGS_1984]\",SPHEROID[\"World_Geodetic_System_of_1984\",6378137,298.257222932867]],PRIMEM[\"Greenwich\",0],UNIT[\"Degree\",0.017453292519943295]]";
MgClassDefinition addressClass = new MgClassDefinition();
addressClass.SetName("AddressMarker");
MgPropertyDefinitionCollection properties = addressClass.GetProperties();
MgDataPropertyDefinition idProperty = new MgDataPropertyDefinition("ID");
idProperty.SetDataType(MgPropertyType.Int32);
idProperty.SetReadOnly(true);
idProperty.SetNullable(false);
idProperty.SetAutoGeneration(true);
properties.Add(idProperty);
MgDataPropertyDefinition addressProperty = new MgDataPropertyDefinition("Address");
addressProperty.SetDataType(MgPropertyType.String);
addressProperty.SetLength(512);
properties.Add(addressProperty);
MgGeometricPropertyDefinition locationProperty = new MgGeometricPropertyDefinition("Location");
locationProperty.SetGeometryTypes(MgGeometryType.Point);
locationProperty.SetHasElevation(false);
locationProperty.SetHasMeasure(false);
locationProperty.SetReadOnly(false);
locationProperty.SetSpatialContextAssociation("LL84");
properties.Add(locationProperty);
MgPropertyDefinitionCollection idProperties = addressClass.GetIdentityProperties();
idProperties.Add(idProperty);
addressClass.SetDefaultGeometryPropertyName("Location");
MgFeatureSchema addressSchema = new MgFeatureSchema();
addressSchema.SetName("AddressMarkerSchema");
addressSchema.GetClasses().Add(addressClass);
MgFileFeatureSourceParams sdfParams = new MgFileFeatureSourceParams("OSGeo.SDF", "LL84", ll84Wkt, addressSchema);
featureService.CreateFeatureSource(addressMarkerDataResId, sdfParams);
}
// Create a temporary Layer to display geocode results.
MgLayer CreateAddressMarkerLayer(MgResourceService resourceService, MgResourceIdentifier addressMarkerDataResId, String sessionId) throws MgException, Exception
{
// Load the AddressMarker layer definition template into
// a JSP DOM object, find the "ResourceId" element, and
// modify it's content to reference the temporary
// feature source.
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse(new File(getServletContext().getRealPath("/") + "javaviewersample//findaddress//templates" + File.separator + "addressmarker.xml"));
NodeList nodes = document.getElementsByTagName("ResourceId");
Node resNode = nodes.item(0);
Node resContent = document.createTextNode(addressMarkerDataResId.ToString());
resNode.appendChild(resContent);
// write the modified layer XML definition into a byte stream
//
TransformerFactory tFactory = TransformerFactory.newInstance();
Transformer transformer = tFactory.newTransformer();
ByteArrayOutputStream bos = new ByteArrayOutputStream();
DOMSource source = new DOMSource(document);
StreamResult result = new StreamResult(bos);
transformer.transform(source, result);
// Save the updated layer definition to the session repository using the
// ResourceService object.
byte[] layerDefinition = bos.toByteArray();
MgByteSource byteSource = new MgByteSource(layerDefinition, layerDefinition.length);
byteSource.SetMimeType(MgMimeType.Xml);
MgResourceIdentifier tempLayerResId = new MgResourceIdentifier("Session:" + sessionId + "//AddressMarker.LayerDefinition");
resourceService.SetResource(tempLayerResId, byteSource.GetReader(), null);
// Create an MgLayer object based on the new layer definition
// and return it to the caller.
MgLayer addressLayer = new MgLayer(tempLayerResId, resourceService);
addressLayer.SetName("AddressMarker");
addressLayer.SetLegendLabel("AddressMarker");
addressLayer.SetDisplayInLegend(false);
addressLayer.SetSelectable(false);
return addressLayer;
}
GeocodeAddress requestGeocodeAddress(String address)
{
//Request the specified address to the geocode service using REST, the
// GET interface
//
String urlString;
URL url = null;
try
{
urlString = "http://geocoder.us/service/rest/geocode?address=" + URLEncoder.encode(address, "UTF-8");
url = new URL(urlString);
}
catch (Exception e)
{
return null;
}
URLConnection conn = null;
DataInputStream data = null;
String line;
StringBuffer buf = new StringBuffer();
try
{
conn = url.openConnection();
conn.connect();
data = new DataInputStream(new BufferedInputStream(conn.getInputStream()));
while ((line = data.readLine()) != null)
{
buf.append(line + "\n");
}
data.close();
}
catch (IOException e)
{
return null;
}
//Extract address elements from the XML response
//
//
GeocodeAddress addr = new GeocodeAddress();
try
{
ByteArrayInputStream bis = new ByteArrayInputStream(buf.toString().getBytes("UTF-8"));
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse(bis);
//get the longitude and latitude
addr.lon = document.getElementsByTagName("geo:long").item(0).getFirstChild().getNodeValue();
addr.lat = document.getElementsByTagName("geo:lat").item(0).getFirstChild().getNodeValue();
//get and decompose address
address = document.getElementsByTagName("dc:description").item(0).getFirstChild().getNodeValue();
int sep = address.indexOf(',');
if(sep != -1)
{
addr.address1 = address.substring(0, sep);
addr.address2 = address.substring(sep + 1);
}
else
addr.address1 = address;
}
catch (Exception e)
{
return null;
}
return addr;
}
%>