void PostGISDataset_ConnectionStringChanged(gView.Framework.OGC.DB.OgcSpatialDataset sender, string provider)
{
try
{
_factory = Npgsql.NpgsqlFactory.Instance;
#region Version
try
{
object obj = base.ExecuteFunction("select postgis_version()");
if (obj is string)
{
if (obj.ToString().StartsWith("2."))
{
_majorVersion = 2;
}
else
{
_majorVersion = 1;
}
}
}
catch
{
_majorVersion = 1;
}
#endregion
}
catch
{
_factory = null;
}
}
void PostGISDataset_ConnectionStringChanged(gView.Framework.OGC.DB.OgcSpatialDataset sender, string provider)
{
try
{
_connectionString = DbConnectionString.ParseNpgsqlConnectionString(_connectionString);
_factory = Npgsql.NpgsqlFactory.Instance;
#region Version
try
{
object obj = base.ExecuteFunction("select postgis_version()");
if (obj is string)
{
string version = obj.ToString();
if (!int.TryParse(version.Split('.')[0], out _majorVersion))
{
_majorVersion = 1;
}
}
}
catch
{
_majorVersion = 1;
}
#endregion
}
catch
{
_factory = null;
}
}
public IDataset2 EmptyCopy()
{
OgcSpatialDataset dataset = CreateInstance();
dataset.ConnectionString = ConnectionString;
dataset.Open();
return(dataset);
}
async public Task <IDataset2> EmptyCopy()
{
OgcSpatialDataset dataset = CreateInstance();
await dataset.SetConnectionString(ConnectionString);
await dataset.Open();
return(dataset);
}
void PostGISDataset_ConnectionStringChanged(gView.Framework.OGC.DB.OgcSpatialDataset sender, string provider)
{
try
{
switch (provider.ToLower())
{
case "odbc":
_factory = DbProviderFactories.GetFactory("System.Data.Odbc");
break;
case "oledb":
_factory = DbProviderFactories.GetFactory("System.Data.OleDb");
break;
default:
//_factory = DbProviderFactories.GetFactory("Npgsql");
_factory = Npgsql.NpgsqlFactory.Instance;
break;
}
#region Version
try
{
object obj = base.ExecuteFunction("select postgis_version()");
if (obj is string)
{
if (obj.ToString().StartsWith("2."))
{
_majorVersion = 2;
}
else
{
_majorVersion = 1;
}
}
}
catch
{
_majorVersion = 1;
}
#endregion
}
catch
{
_factory = null;
}
}
async public static Task <ISpatialReference> TrySelectSpatialReference(OgcSpatialDataset dataset, OgcSpatialFeatureclass fc)
{
try
{
DbCommand sridCommand = dataset.SelectSpatialReferenceIds(fc);
if (sridCommand != null)
{
using (DbConnection connection = dataset.ProviderFactory.CreateConnection())
{
connection.ConnectionString = dataset.ConnectionString;
sridCommand.Connection = connection;
await connection.OpenAsync();
using (DbDataReader reader = await sridCommand.ExecuteReaderAsync())
{
while (await reader.ReadAsync())
{
object sridObj = reader["srid"];
if (sridObj != null && sridObj != DBNull.Value)
{
int srid = Convert.ToInt32(sridObj);
if (srid > 0)
{
var sRef = gView.Framework.Geometry.SpatialReference.FromID("epsg:" + srid.ToString());
if (sRef != null)
{
return(sRef);
}
}
}
}
}
connection.Close();
}
}
}
catch (Exception ex)
{
string msg = ex.Message;
}
return(null);
}
async public static Task <IFeatureClass> Create(OgcSpatialDataset dataset, DataRow geometry_columns_row)
{
var featureClass = new OgcSpatialFeatureclass(dataset, geometry_columns_row);
featureClass._dataset = dataset;
if (featureClass._dataset == null || geometry_columns_row == null)
{
return(featureClass);
}
try
{
featureClass._lastException = null;
string schema = String.Empty;
try
{
if (!String.IsNullOrEmpty(featureClass._dataset.OgcDictionary("geometry_columns.f_table_schema")))
{
schema = geometry_columns_row[featureClass._dataset.OgcDictionary("geometry_columns.f_table_schema")].ToString();
}
if (!String.IsNullOrEmpty(schema))
{
schema += ".";
}
}
catch { schema = ""; }
featureClass._name = schema + geometry_columns_row[featureClass._dataset.OgcDictionary("geometry_columns.f_table_name")].ToString();
featureClass._shapefield = geometry_columns_row[featureClass._dataset.OgcDictionary("geometry_columns.f_geometry_column")].ToString();
featureClass._idfield = featureClass._dataset.OgcDictionary("gid");
// Read Primary Key -> PostGIS id is not always "gid";
string pKey = featureClass.GetPKey();
if (!String.IsNullOrWhiteSpace(pKey) && !pKey.Equals(featureClass._idfield))
{
featureClass._idfield = pKey;
}
featureClass._geometry_columns_type = geometry_columns_row[featureClass._dataset.OgcDictionary("geometry_columns.type")].ToString().ToUpper();
switch (featureClass._geometry_columns_type)
{
case "MULTIPOLYGON":
case "POLYGON":
case "MULTIPOLYGONM":
case "POLYGONM":
featureClass._geomType = geometryType.Polygon;
break;
case "MULTILINESTRING":
case "LINESTRING":
case "MULTILINESTRINGM":
case "LINESTRINGM":
featureClass._geomType = geometryType.Polyline;
break;
case "POINT":
case "POINTM":
case "MULTIPOINT":
case "MULTIPOINTM":
featureClass._geomType = geometryType.Point;
break;
default:
featureClass._geomType = geometryType.Unknown;
break;
}
featureClass._hasZ = (int)geometry_columns_row[featureClass._dataset.OgcDictionary("geometry_columns.coord_dimension")] == 3;
try
{
int srid = int.Parse(geometry_columns_row[featureClass._dataset.OgcDictionary("geometry_columns.srid")].ToString());
if (srid > 0)
{
featureClass._sRef = gView.Framework.Geometry.SpatialReference.FromID("epsg:" + srid.ToString());
}
else
{
featureClass._sRef = await TrySelectSpatialReference(dataset, featureClass);
}
}
catch { }
await featureClass.ReadSchema();
}
catch (Exception ex)
{
featureClass._lastException = ex;
string msg = ex.Message;
}
return(featureClass);
}
private OgcSpatialFeatureclass(OgcSpatialDataset dataset, DataRow geometry_columns_row)
{
}
public OgcSpatialFeatureclass(OgcSpatialDataset dataset, DataRow geometry_columns_row)
{
_dataset = dataset;
if (_dataset == null || geometry_columns_row == null)
{
return;
}
try
{
_lastException = null;
_name = geometry_columns_row[_dataset.OgcDictionary("geometry_columns.f_table_name")].ToString();
_shapefield = geometry_columns_row[_dataset.OgcDictionary("geometry_columns.f_geometry_column")].ToString();
_idfield = _dataset.OgcDictionary("gid");
_geometry_columns_type = geometry_columns_row[_dataset.OgcDictionary("geometry_columns.type")].ToString().ToUpper();
switch (_geometry_columns_type)
{
case "MULTIPOLYGON":
case "POLYGON":
case "MULTIPOLYGONM":
case "POLYGONM":
_geomType = geometryType.Polygon;
break;
case "MULTILINESTRING":
case "LINESTRING":
case "MULTILINESTRINGM":
case "LINESTRINGM":
_geomType = geometryType.Polyline;
break;
case "POINT":
case "POINTM":
_geomType = geometryType.Point;
break;
default:
_geomType = geometryType.Unknown;
break;
}
_hasZ = (int)geometry_columns_row[_dataset.OgcDictionary("geometry_columns.coord_dimension")] == 3;
try
{
int srid = int.Parse(geometry_columns_row[_dataset.OgcDictionary("geometry_columns.srid")].ToString());
if (srid > 0)
{
_sRef = gView.Framework.Geometry.SpatialReference.FromID("epsg:" + srid.ToString());
}
else
{
_sRef = TrySelectSpatialReference(dataset, this);
}
}
catch { }
ReadSchema();
}
catch (Exception ex)
{
_lastException = ex;
string msg = ex.Message;
}
}
