public void DescribeSHPSchema()
{
IConnectionManager connMgr = FdoFeatureAccessManager.GetConnectionManager();
FdoIConnection conn = connMgr.CreateConnection("OSGeo.SHP");
conn.ConnectionString = "DefaultFileLocation=" + TestDataStore.SHP;
Assert.Equal(FdoConnectionState.FdoConnectionState_Open, conn.Open());
FdoIDescribeSchema desc = conn.CreateCommand((int)FdoCommandType.FdoCommandType_DescribeSchema) as FdoIDescribeSchema;
Assert.NotNull(desc);
FdoFeatureSchemaCollection schemas = desc.Execute();
Assert.Equal(1, schemas.Count);
FdoFeatureSchema schema = schemas.GetItem(0);
FdoClassCollection classes = schema.GetClasses();
Assert.Equal(1, classes.Count);
FdoClassDefinition clsDef = classes.GetItem(0);
VerifyClass(clsDef);
//Re-test with sugar
clsDef = schemas.GetClassDefinition(schema.Name, "World_Countries");
Assert.NotNull(clsDef);
VerifyClass(clsDef);
clsDef = schemas.GetClassDefinition(null, "World_Countries");
Assert.NotNull(clsDef);
VerifyClass(clsDef);
Assert.Throws <ManagedFdoException>(() => schemas.GetClassDefinition(null, "WorldCountries"));
Assert.Throws <ManagedFdoException>(() => schemas.GetClassDefinition("BogusSchema", "World_Countries"));
}
private void DoFilteredSpatialExtents(FdoIConnection conn)
{
FdoIDescribeSchema desc = conn.CreateCommand((int)FdoCommandType.FdoCommandType_DescribeSchema) as FdoIDescribeSchema;
Assert.NotNull(desc);
FdoFeatureSchemaCollection schemas = desc.Execute();
Assert.NotNull(schemas);
Assert.Equal(1, schemas.Count);
FdoFeatureSchema schema = schemas.GetItem(0);
FdoClassCollection classes = schema.GetClasses();
string geomName = null;
for (int i = 0; i < classes.Count; i++)
{
FdoClassDefinition cls = classes.GetItem(i);
if (cls.Name == "World_Countries")
{
Assert.IsAssignableFrom <FdoFeatureClass>(cls);
FdoGeometricPropertyDefinition geomProp = ((FdoFeatureClass)cls).GetGeometryProperty();
Assert.NotNull(geomProp);
geomName = geomProp.Name;
}
}
Assert.NotNull(geomName);
FdoISelectAggregates selectCmd = conn.CreateCommand((int)FdoCommandType.FdoCommandType_SelectAggregates) as FdoISelectAggregates;
Assert.NotNull(selectCmd);
selectCmd.SetFeatureClassName("World_Countries");
selectCmd.SetFilter("NAME = 'Canada'");
FdoIdentifierCollection propNames = selectCmd.GetPropertyNames();
FdoExpression countExpr = FdoExpression.Parse("SpatialExtents(" + geomName + ")");
FdoComputedIdentifier countIdent = FdoComputedIdentifier.Create("EXTENTS", countExpr);
propNames.Add(countIdent);
FdoIDataReader rdr = selectCmd.Execute();
FdoFgfGeometryFactory geomFactory = FdoFgfGeometryFactory.GetInstance();
int iterations = 0;
while (rdr.ReadNext())
{
Assert.False(rdr.IsNull("EXTENTS"));
Assert.Equal(FdoPropertyType.FdoPropertyType_GeometricProperty, rdr.GetPropertyType("EXTENTS"));
FdoByteArrayHandle bytes = rdr.GetGeometryBytes("EXTENTS");
Assert.NotNull(bytes);
FdoIGeometry geom = geomFactory.CreateGeometryFromFgf(bytes);
Assert.NotNull(geom);
string wkt = geom.Text;
Assert.NotNull(wkt);
System.Diagnostics.Debug.WriteLine(string.Format("SpatialExtents() - {0}", wkt));
iterations++;
}
rdr.Close();
Assert.Equal(1, iterations);
//Re-test with sugar methods
propNames.Clear();
Assert.Equal(0, propNames.Count);
propNames.AddComputedIdentifier("EXTENTS", "SpatialExtents(" + geomName + ")");
Assert.Equal(1, propNames.Count);
rdr = selectCmd.Execute();
iterations = 0;
while (rdr.ReadNext())
{
Assert.False(rdr.IsNull("EXTENTS"));
Assert.Equal(FdoPropertyType.FdoPropertyType_GeometricProperty, rdr.GetPropertyType("EXTENTS"));
FdoByteArrayHandle bytes = rdr.GetGeometryBytes("EXTENTS");
Assert.NotNull(bytes);
FdoIGeometry geom = geomFactory.CreateGeometryFromFgf(bytes);
Assert.NotNull(geom);
string wkt = geom.Text;
Assert.NotNull(wkt);
System.Diagnostics.Debug.WriteLine(string.Format("SpatialExtents() - {0}", wkt));
iterations++;
}
rdr.Close();
Assert.Equal(1, iterations);
}