public MG_GeometryType Type; // default NONE
public MG_Layer()
{
layerCount++;
this.LayerName = "Layer_" + layerCount.ToString();
this.LayerPath = null;
this.IsVisible = true;
this.FeatureSet = new MG_FeatureSet();
this.FieldSet = new MG_FieldSet(this.LayerName);
this.Extent = new MG_MapExtent();
this.Type = MG_GeometryType.NONE;
}
private string LayerPath; // null or not
#endregion Fields
#region Constructors
public MG_Layer()
{
layerCount++;
this.LayerName = "Layer_" + layerCount.ToString();
this.LayerPath = null;
this.IsVisible = true;
this.FeatureSet = new MG_FeatureSet();
this.FieldSet = new MG_FieldSet(this.LayerName);
this.Extent = new MG_MapExtent();
this.Type = MG_GeometryType.NONE;
}
protected MG_FeatureSet GetFeatureSet(MG_FieldSet fieldSet,string table)
{
NpgsqlDataReader reader = this.SelectAll(table);
if (reader == null || !reader.HasRows)
return null;
MG_FeatureSet featureSet = new MG_FeatureSet();
int fc = reader.FieldCount; // 4
while (reader.Read())
{// oid f1,f2,f3... geom
MG_Feature f = new MG_Feature(fieldSet);
MG_ValueSet valueSet = new MG_ValueSet();
string oid = reader["oid"].ToString();
string geom = reader["geomtext"].ToString();
for (int i = 1; i < fc-1; i++)
{
string str = reader[i].ToString();
MG_Value value = new MG_Value(i - 1, str);
valueSet.Add(value);
}
f.ValueSet = valueSet;
f.Geometry = MG_ShapeFileOper.AsGeometry(geom);
featureSet.Add(f);
}
reader.Close();
reader.Dispose();
return featureSet;
}