#region Disclaimer / License
// Copyright (C) 2010, Jackie Ng
// http://trac.osgeo.org/mapguide/wiki/maestro, jumpinjackie@gmail.com
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
using OSGeo.MapGuide.ObjectModels.Common;
namespace OSGeo.MapGuide.MaestroAPI.SchemaOverrides
{
///
/// A configuration document for the GDAL raster provider. A GDAL configuration document serves as a raster image catalog. Allowing
/// the GDAL provider to optimally select the correct raster images to return for the given queried extents.
///
public class GdalConfigurationDocument : ConfigurationDocument
{
private Dictionary _items = new Dictionary();
///
/// Adds the specified raster location to this document
///
///
///
public GdalRasterLocationItem AddLocation(GdalRasterLocationItem item)
{
if (!_items.ContainsKey(item.Location))
{
_items.Add(item.Location, item);
}
return _items[item.Location];
}
///
/// Removes the specified raster location from this document
///
///
///
public bool RemoveLocation(GdalRasterLocationItem item)
{
return _items.Remove(item.Location);
}
///
/// Calculates the combined extent that encompasses all the raster images in this document.
///
///
public IEnvelope CalculateExtent()
{
IEnvelope env = null;
foreach (var loc in _items.Values)
{
if (env == null)
env = loc.CalculateExtents();
else
env.ExpandToInclude(loc.CalculateExtents());
}
return env;
}
///
/// Adds the specified directory to this document
///
///
///
public GdalRasterLocationItem AddLocation(string directory)
{
if (_items.ContainsKey(directory))
return _items[directory];
return AddLocation(new GdalRasterLocationItem() { Location = directory });
}
///
/// Gets an array of all the raster locations for this document
///
public GdalRasterLocationItem[] RasterLocations { get { return new List(_items.Values).ToArray(); } }
protected override void WriteSchemaMappings(System.Xml.XmlDocument doc, System.Xml.XmlNode currentNode)
{
foreach (var schema in base._schemas)
{
var map = doc.CreateElement("SchemaMapping");
map.SetAttribute("provider", "OSGeo.Gdal.3.2");
map.SetAttribute("xmlns", "http://fdogrfp.osgeo.org/schemas");
map.SetAttribute("name", schema.Name);
{
var ctype = doc.CreateElement("complexType");
var ctypeName = doc.CreateAttribute("name");
ctypeName.Value = schema.Name + "Type";
ctype.Attributes.Append(ctypeName);
{
var rasType = doc.CreateElement("complexType");
var rasTypeName = doc.CreateAttribute("name");
rasTypeName.Value = "RasterTypeType";
rasType.Attributes.Append(rasTypeName);
{
var rasDef = doc.CreateElement("RasterDefinition");
var rasDefName = doc.CreateAttribute("name");
rasDefName.Value = "images";
rasDef.Attributes.Append(rasDefName);
foreach (var loc in _items.Values)
{
loc.WriteXml(doc, rasDef);
}
rasType.AppendChild(rasDef);
}
ctype.AppendChild(rasType);
}
map.AppendChild(ctype);
}
currentNode.AppendChild(map);
}
}
protected override void ReadSchemaMappings(System.Xml.XmlNode node, System.Xml.XmlNamespaceManager mgr)
{
//XmlNodeList mappings = node.SelectNodes("SchemaMapping");
foreach (XmlNode map in node.ChildNodes)
{
if (map.Name != "SchemaMapping")
continue;
var prv = map.Attributes["provider"];
if (prv == null)
throw new Exception("Bad document. Expected attribute: provider"); //LOCALIZEME
var sn = map.Attributes["name"];
if (sn == null)
throw new Exception("Bad document. Expected attribute: name"); //LOCALIZEME
if (!prv.Value.StartsWith("OSGeo.Gdal"))
continue;
//XmlNodeList list = map.SelectNodes("complexType");
foreach (XmlNode schemaMap in map.ChildNodes)
{
if (schemaMap.Name != "complexType")
continue;
var schemaName = schemaMap.Attributes["name"].Value;
schemaName = schemaName.Substring(0, schemaName.Length - 4);
if (!SchemaExists(schemaName))
continue;
var rasterType = schemaMap.FirstChild;
var rasterDef = rasterType.FirstChild;
if (rasterType.Name != "complexType")
throw new Exception("Bad document. Expected element: complexType");
if (rasterDef.Name != "RasterDefinition")
throw new Exception("Bad document. Expected element: RasterDefinition");
foreach (XmlNode loc in rasterDef.ChildNodes)
{
var location = new GdalRasterLocationItem();
location.ReadXml(loc, mgr);
AddLocation(location);
}
}
}
}
private bool SchemaExists(string schemaName)
{
foreach (var schema in _schemas)
{
if (schema.Name == schemaName)
return true;
}
return false;
}
}
}