<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%--
Copyright (C) 2004-2011 by 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 language="c#" %>
<%@ Import Namespace="System" %>
<%@ Import Namespace="System.Collections.Specialized" %>
<%@ Import Namespace="System.IO" %>
<%@ Import Namespace="OSGeo.MapGuide" %>
<script runat="server">
String sessionId;
String mapName;
String selectionXml;
</script>
<!-- #Include File="../common/common.aspx" -->
<html>
<head>
<title>Viewer Sample Application - Server-side Selection</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta http-equiv="content-script-type" content="text/javascript" />
<meta http-equiv="content-style-type" content="text/css" />
<link href="../styles/globalStyles.css" rel="stylesheet" type="text/css">
<link href="../styles/otherStyles.css" rel="stylesheet" type="text/css">
</head>
<body class="AppFrame" onLoad="OnPageLoad()">
<h1 class="AppHeading">Select features</h1>
<%
sessionId = Request.Params["SESSION"];
mapName = Request.Params["MAPNAME"];
try
{
// Initialize the Web Extensions and connect to the Server using
// the Web Extensions session identifier stored in PHP session state.
MapGuideApi.MgInitializeWebTier (Constants.WebConfigPath);
MgUserInformation userInfo = new MgUserInformation(sessionId);
MgSiteConnection siteConnection = new MgSiteConnection();
siteConnection.Open(userInfo);
MgMap map = new MgMap(siteConnection);
map.Open(mapName);
// Get the geometry for the boundaries of District 1
MgFeatureQueryOptions districtQuery = new MgFeatureQueryOptions();
districtQuery.SetFilter("Autogenerated_SDF_ID = 1");
MgLayerBase layer = map.GetLayers().GetItem("Districts");
MgFeatureReader featureReader = layer.SelectFeatures(districtQuery);
MgByteReader districtGeometryData = null;
try {
featureReader.ReadNext();
districtGeometryData = featureReader.GetGeometry("Data");
} finally { //Ensures the reader is closed regardless
featureReader.Close();
}
// Convert the AGF binary data to MgGeometry.
MgAgfReaderWriter agfReaderWriter = new MgAgfReaderWriter();
MgGeometry districtGeometry = agfReaderWriter.Read(districtGeometryData);
// Create a filter to select the desired features. Combine
// a basic filter and a spatial filter.
MgFeatureQueryOptions queryOptions = new MgFeatureQueryOptions();
queryOptions.SetFilter("RNAME LIKE 'SCHMITT%'");
queryOptions.SetSpatialFilter("SHPGEOM", districtGeometry, MgFeatureSpatialOperations.Inside);
// Get the features from the feature source,
// turn it into a selection, then save the selection as XML.
layer = map.GetLayers().GetItem("Parcels");
featureReader = layer.SelectFeatures(queryOptions);
MgSelection selection = new MgSelection(map);
selection.AddFeatures(layer, featureReader, 0);
selectionXml = selection.ToXml();
Response.Write("Selecting parcels owned by Schmitt in District 1");
}
catch (MgException e)
{
Response.Write(e.GetExceptionMessage());
Response.Write(e.GetDetails());
}
%>
</body>
<script language="javascript">
<!-- Emit this function and assocate it with the onLoad event for the -.
<!-- page so that it gets executed when this page loads in the -.
<!-- browser. The function calls the SetSelectionXML method on the -.
<!-- Viewer Frame, which updates the current selection on the viewer -.
<!-- and the server. -.
function OnPageLoad()
{
selectionXml = '<%= selectionXml %>';
parent.parent.SetSelectionXML(selectionXml);
}
</script>
</html>