private static void MoveDefaultDiscriminator( StorageMappingFragment fromFragment, StorageMappingFragment toFragment) { var discriminatorColumn = fromFragment.GetDefaultDiscriminator(); if (discriminatorColumn != null) { var discriminator = fromFragment.ColumnConditions.SingleOrDefault( cc => cc.ColumnProperty == discriminatorColumn); if (discriminator != null) { fromFragment.RemoveDefaultDiscriminatorAnnotation(); fromFragment.RemoveConditionProperty(discriminator); toFragment.AddDiscriminatorCondition(discriminator.ColumnProperty, discriminator.Value); toFragment.SetDefaultDiscriminator(discriminator.ColumnProperty); } } }
internal void Configure( DbDatabaseMapping databaseMapping, StorageMappingFragment fragment, EntityType entityType, DbProviderManifest providerManifest) { DebugCheck.NotNull(fragment); DebugCheck.NotNull(providerManifest); var discriminatorColumn = fragment.Table.Properties .SingleOrDefault(c => string.Equals(c.Name, Discriminator, StringComparison.Ordinal)); if (discriminatorColumn == null) { var typeUsage = providerManifest.GetStoreType(DatabaseMappingGenerator.DiscriminatorTypeUsage); discriminatorColumn = new EdmProperty(Discriminator, typeUsage) { Nullable = false }; TablePrimitiveOperations.AddColumn(fragment.Table, discriminatorColumn); } if (AnyBaseTypeToTableWithoutColumnCondition( databaseMapping, entityType, fragment.Table, discriminatorColumn)) { discriminatorColumn.Nullable = true; } var existingConfiguration = discriminatorColumn.GetConfiguration() as Properties.Primitive.PrimitivePropertyConfiguration; if (Value != null) { ConfigureColumnType(providerManifest, existingConfiguration, discriminatorColumn); fragment.AddDiscriminatorCondition(discriminatorColumn, Value); } else { if (string.IsNullOrWhiteSpace(discriminatorColumn.TypeName)) { var typeUsage = providerManifest.GetStoreType(DatabaseMappingGenerator.DiscriminatorTypeUsage); discriminatorColumn.PrimitiveType = (PrimitiveType)typeUsage.EdmType; discriminatorColumn.MaxLength = DatabaseMappingGenerator.DiscriminatorMaxLength; discriminatorColumn.Nullable = false; } GetOrCreateConfiguration <Properties.Primitive.PrimitivePropertyConfiguration>().IsNullable = true; fragment.AddNullabilityCondition(discriminatorColumn, true); } if (_configuration == null) { return; } if (existingConfiguration != null) { string errorMessage; if ((existingConfiguration.OverridableConfigurationParts & OverridableConfigurationParts.OverridableInCSpace) != OverridableConfigurationParts.OverridableInCSpace && !existingConfiguration.IsCompatible( _configuration, inCSpace: true, errorMessage: out errorMessage)) { throw Error.ConflictingColumnConfiguration(discriminatorColumn, fragment.Table, errorMessage); } } if (_configuration.IsNullable != null) { discriminatorColumn.Nullable = _configuration.IsNullable.Value; } _configuration.Configure(discriminatorColumn, fragment.Table, providerManifest); }