/// <summary>
/// Creates the GeoJSON feature collection from list of <see cref="ArcDeveloper.REST.Core.Interfaces.IFeature"/>.
/// </summary>
/// <param name="features">The features.</param>
/// <returns>A GeoJSON feature collection</returns>
public static GeoJSONFeatureCollection CreateFeatureCollectionFromList(List <IFeature> features)
{
GeoJSONFeatureCollection featCollection = new GeoJSONFeatureCollection();
foreach (IFeature feat in features)
{
featCollection.Features.Add(GeoJSONFeature.CreateFromIFeature(feat));
}
return(featCollection);
}
public string GetAsGeoJSON(IRecordSet recordset)
{
GeoJSONFeatureCollection jsonFeatures = new GeoJSONFeatureCollection();
ICursor cur = recordset.get_Cursor(false);
IFeature f = (IFeature)cur.NextRow();
if (f != null)
{
while (f != null)
{
jsonFeatures.Features.Add(GeoJSONFeature.CreateFromIFeature(f));
f = (IFeature)cur.NextRow();
}
}
return("{}");
}
/// <summary>
/// Creates A GeoJSON feature from an IFeature
/// </summary>
/// <param name="feat">The feature.</param>
/// <returns>A GeoJSON Feature</returns>
public static GeoJSONFeature CreateFromIFeature(IFeature feat)
{
GeoJSONFeature jsonFeature = new GeoJSONFeature();
jsonFeature.id = feat.OID.ToString();
jsonFeature.geometry = GeoJSONGeometry.CreateFromIGeometry(feat.Shape);
StringBuilder sb = new StringBuilder();
sb.Append("{");
for (int i = 0; i < feat.Fields.FieldCount; i++)
{
ESRI.ArcGIS.Geodatabase.IField fld = feat.Fields.get_Field(i);
switch (fld.Name.ToUpper())
{
case "SHAPE":
break;
default:
string val = "null";
if (feat.get_Value(i) != null)
{
val = feat.get_Value(i).ToString();
}
if (sb.Length > 1)
{
sb.Append(",");
}
sb.Append(string.Format("\"{0}\":\"{1}\"", fld.Name, val));
break;
}
}
jsonFeature.properties = sb.ToString();
sb.Append("}");
jsonFeature.properties = sb.ToString();
return(jsonFeature);
}
/// <summary>
/// Creates A GeoJSON feature from an IFeature
/// </summary>
/// <param name="feat">The feature.</param>
/// <returns>A GeoJSON Feature</returns>
public static GeoJSONFeature CreateFromIFeature(IFeature feat)
{
GeoJSONFeature jsonFeature = new GeoJSONFeature();
jsonFeature.id = feat.OID.ToString();
jsonFeature.geometry = GeoJSONGeometry.CreateFromIGeometry(feat.Shape);
StringBuilder sb = new StringBuilder();
sb.Append("{");
for (int i = 0; i < feat.Fields.FieldCount; i++)
{
ESRI.ArcGIS.Geodatabase.IField fld = feat.Fields.get_Field(i);
switch (fld.Name.ToUpper())
{
case "SHAPE":
break;
default:
string val = "null";
if (feat.get_Value(i) != null)
val = feat.get_Value(i).ToString();
if(sb.Length > 1)
sb.Append(",");
sb.Append(string.Format("\"{0}\":\"{1}\"", fld.Name, val));
break;
}
}
jsonFeature.properties = sb.ToString();
sb.Append("}");
jsonFeature.properties = sb.ToString();
return jsonFeature;
}
