Class MappingSchema

Mapping schema.

Inheritance

System.Object

MappingSchema

LockedMappingSchema

Implements

IConfigurationID

Namespace: LinqToDB.Mapping

Assembly: linq2db.dll

Syntax

public class MappingSchema : object, IConfigurationID

Constructors

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MappingSchema()

Creates mapping schema instance.

Declaration

public MappingSchema()

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MappingSchema(MappingSchema[])

Creates mapping schema, derived from other mapping schemata.

Declaration

public MappingSchema(params MappingSchema[] schemas)

Parameters

Type	Name	Description
MappingSchema[]	schemas	Base mapping schemata.

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MappingSchema(Nullable<String>)

Creates mapping schema for specified configuration name.

Declaration

public MappingSchema(string? configuration)

Parameters

Type	Name	Description
System.Nullable<System.String>	configuration	Mapping schema configuration name. ProviderName for standard names.

Remarks

Schema name should be unique for mapping schemas with different mappings. Using same name could lead to incorrect mapping used when mapping schemas with same name define different mappings for same type.

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MappingSchema(Nullable<String>, MappingSchema[])

Creates mapping schema with specified configuration name and base mapping schemas.

Declaration

public MappingSchema(string? configuration, params MappingSchema[] schemas)

Parameters

Type	Name	Description
System.Nullable<System.String>	configuration	Mapping schema configuration name. ProviderName for standard names.
MappingSchema[]	schemas	Base mapping schemas.

Remarks

Fields

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Default

Default mapping schema, used by LINQ to DB, when more specific mapping schema not provided.

Declaration

public static MappingSchema Default

Field Value

Type	Description
MappingSchema

Properties

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ColumnNameComparer

Gets or sets column name comparison rules for comparison of column names in mapping with column name, returned by provider's data reader.

Declaration

public StringComparer ColumnNameComparer { get; set; }

Property Value

Type	Description
StringComparer

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ConfigurationList

Gets configurations, associated with current mapping schema.

Declaration

public string[] ConfigurationList { get; }

Property Value

Type	Description
System.String[]

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DisplayID

Declaration

public string DisplayID { get; }

Property Value

Type	Description
System.String

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EntityDescriptorCreatedCallback

Gets or sets action, called when the EntityDescriptor is created. Could be used to adjust created descriptor before use.

Declaration

public Action<MappingSchema, IEntityChangeDescriptor>? EntityDescriptorCreatedCallback { get; set; }

Property Value

Type	Description
System.Nullable<Action<MappingSchema, IEntityChangeDescriptor>>

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IsLockable

Declaration

public virtual bool IsLockable { get; }

Property Value

Type	Description
System.Boolean

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IsLocked

Declaration

public virtual bool IsLocked { get; }

Property Value

Type	Description
System.Boolean

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MetadataReader

Gets or sets metadata attributes provider for current schema. Metadata providers, shipped with LINQ to DB:

MetadataReader - aggregation metadata provider over collection of other providers;
AttributeReader - .NET attributes provider;
FluentMetadataReader - fluent mappings metadata provider;
SystemDataLinqAttributeReader - metadata provider that converts attributes to LINQ to DB mapping attributes;
SystemDataSqlServerAttributeReader - metadata provider that converts attributes to LINQ to DB mapping attributes;
XmlAttributeReader - XML-based mappings metadata provider.

Declaration

public IMetadataReader MetadataReader { get; set; }

Property Value

Type	Description
IMetadataReader

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ValueToSqlConverter

Gets value to SQL (usually literal) converter.

Declaration

public ValueToSqlConverter ValueToSqlConverter { get; }

Property Value

Type	Description
ValueToSqlConverter

Methods

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AddMetadataReader(IMetadataReader)

Adds additional metadata attributes provider to current schema.

Declaration

public void AddMetadataReader(IMetadataReader reader)

Parameters

Type	Name	Description
IMetadataReader	reader	Metadata attributes provider.

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AddScalarType(Type, DataType, Boolean)

Configure provided type mapping to scalar database type.

Declaration

public void AddScalarType(Type type, DataType dataType = default(DataType), bool withNullable = true)

Parameters

Type	Name	Description
Type	type	Type to configure.
DataType	dataType	Optional scalar data type.
System.Boolean	withNullable	Also register type.

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AddScalarType(Type, SqlDataType, Boolean)

Configure provided type mapping to scalar database type.

Declaration

public void AddScalarType(Type type, SqlDataType dataType, bool withNullable = true)

Parameters

Type	Name	Description
Type	type	Type to configure.
SqlDataType	dataType	Database data type.
System.Boolean	withNullable	Also register type.

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AddScalarType(Type, Nullable<Object>, DataType)

Configure provided type mapping to scalar database type.

Declaration

public void AddScalarType(Type type, object? defaultValue, DataType dataType = default(DataType))

Parameters

Type	Name	Description
Type	type	Type to configure.
System.Nullable<System.Object>	defaultValue	Default value. See for more details.
DataType	dataType	Optional scalar data type.

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AddScalarType(Type, Nullable<Object>, Boolean, DataType)

Configure provided type mapping to scalar database type.

Declaration

public void AddScalarType(Type type, object? defaultValue, bool canBeNull, DataType dataType = default(DataType))

Parameters

Type	Name	Description
Type	type	Type to configure.
System.Nullable<System.Object>	defaultValue	Default value. See for more details.
System.Boolean	canBeNull	Set `null` value support flag. See SetCanBeNull(Type, Boolean) for more details.
DataType	dataType	Optional scalar data type.

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ChangeType(Nullable<Object>, Type)

Converts value to specified type.

Declaration

public object? ChangeType(object? value, Type conversionType)

Parameters

Type	Name	Description
System.Nullable<System.Object>	value	Value to convert.
Type	conversionType	Target type.

Returns

Type	Description
System.Nullable<System.Object>	Converted value.

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ChangeTypeTo<T>(Nullable<Object>)

Converts value to specified type.

Declaration

public T ChangeTypeTo<T>(object? value)

Parameters

Type	Name	Description
System.Nullable<System.Object>	value	Value to convert.

Returns

Type	Description
T	Converted value.

Type Parameters

Name	Description
T	Target type.

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ClearCache()

Clears EntityDescriptor cache.

Declaration

public static void ClearCache()

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EnumToValue(Enum)

Converts enum value to database value.

Declaration

public object? EnumToValue(Enum value)

Parameters

Type	Name	Description
Enum	value	Enum value.

Returns

Type	Description
System.Nullable<System.Object>	Database value.

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GenerateConvertedValueExpression(Nullable<Object>, Type)

Declaration

public Expression GenerateConvertedValueExpression(object? value, Type type)

Parameters

Type	Name	Description
System.Nullable<System.Object>	value
Type	type

Returns

Type	Description
Expression

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GenerateID()

Declaration

protected virtual int GenerateID()

Returns

Type	Description
System.Int32

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GenerateSafeConvert(Type, Type)

Declaration

public LambdaExpression GenerateSafeConvert(Type fromType, Type type)

Parameters

Type	Name	Description
Type	fromType
Type	type

Returns

Type	Description
LambdaExpression

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GetAttribute<T>(Type, Func<T, Nullable<String>>, Boolean)

Gets attribute of specified type, associated with specified type. Attributes filtered by schema's configuration names (see ConfigurationList).

Declaration

public T GetAttribute<T>(Type type, Func<T, string?> configGetter, bool inherit = true)
    where T : Attribute

Parameters

Type	Name	Description
Type	type	Attribute owner type.
Func<T, System.Nullable<System.String>>	configGetter	Attribute configuration name provider.
System.Boolean	inherit	If `true` - include inherited attribute.

Returns

Type	Description
T	First found attribute of specified type or `null`, if no attributes found.

Type Parameters

Name	Description
T	Attribute type.

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GetAttribute<T>(Type, MemberInfo, Func<T, Nullable<String>>, Boolean)

Gets attribute of specified type, associated with specified type member. Attributes filtered by schema's configuration names (see ConfigurationList).

Declaration

public T GetAttribute<T>(Type type, MemberInfo memberInfo, Func<T, string?> configGetter, bool inherit = true)
    where T : Attribute

Parameters

Type	Name	Description
Type	type	Member's owner type.
MemberInfo	memberInfo	Attribute owner member.
Func<T, System.Nullable<System.String>>	configGetter	Attribute configuration name provider.
System.Boolean	inherit	If `true` - include inherited attribute.

Returns

Type	Description
T	First found attribute of specified type or `null`, if no attributes found.

Type Parameters

Name	Description
T	Attribute type.

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GetAttribute<T>(Type, MemberInfo, Boolean)

Gets attribute of specified type, associated with specified type member.

Declaration

public T GetAttribute<T>(Type type, MemberInfo memberInfo, bool inherit = true)
    where T : Attribute

Parameters

Type	Name	Description
Type	type	Member's owner type.
MemberInfo	memberInfo	Attribute owner member.
System.Boolean	inherit	If `true` - include inherited attribute.

Returns

Type	Description
T	First found attribute of specified type or `null`, if no attributes found.

Type Parameters

Name	Description
T	Attribute type.

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GetAttribute<T>(Type, Boolean)

Gets attribute of specified type, associated with specified type.

Declaration

public T GetAttribute<T>(Type type, bool inherit = true)
    where T : Attribute

Parameters

Type	Name	Description
Type	type	Attribute owner type.
System.Boolean	inherit	If `true` - include inherited attribute.

Returns

Type	Description
T	First found attribute of specified type or `null`, if no attributes found.

Type Parameters

Name	Description
T	Attribute type.

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GetAttributes<T>(Type, Func<T, Nullable<String>>, Boolean, Boolean)

Gets attributes of specified type, associated with specified type. Attributes filtered by schema's configuration names (see ConfigurationList).

Declaration

public T[] GetAttributes<T>(Type type, Func<T, string?> configGetter, bool inherit = true, bool exactForConfiguration = false)
    where T : Attribute

Parameters

Type	Name	Description
Type	type	Attributes owner type.
Func<T, System.Nullable<System.String>>	configGetter	Attribute configuration name provider.
System.Boolean	inherit	If `true` - include inherited attributes.
System.Boolean	exactForConfiguration	If `true` - only associated to configuration attributes will be returned.

Returns

Type	Description
T[]	Attributes of specified type.

Type Parameters

Name	Description
T	Attribute type.

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GetAttributes<T>(Type, MemberInfo, Func<T, Nullable<String>>, Boolean, Boolean)

Gets attributes of specified type, associated with specified type member. Attributes filtered by schema's configuration names (see ConfigurationList).

Declaration

public T[] GetAttributes<T>(Type type, MemberInfo memberInfo, Func<T, string?> configGetter, bool inherit = true, bool exactForConfiguration = false)
    where T : Attribute

Parameters

Type	Name	Description
Type	type	Member's owner type.
MemberInfo	memberInfo	Attributes owner member.
Func<T, System.Nullable<System.String>>	configGetter	Attribute configuration name provider.
System.Boolean	inherit	If `true` - include inherited attributes.
System.Boolean	exactForConfiguration	If `true` - only associated to configuration attributes will be returned.

Returns

Type	Description
T[]	Attributes of specified type.

Type Parameters

Name	Description
T	Attribute type.

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GetAttributes<T>(Type, MemberInfo, Boolean)

Gets attributes of specified type, associated with specified type member.

Declaration

public T[] GetAttributes<T>(Type type, MemberInfo memberInfo, bool inherit = true)
    where T : Attribute

Parameters

Type	Name	Description
Type	type	Member's owner type.
MemberInfo	memberInfo	Attributes owner member.
System.Boolean	inherit	If `true` - include inherited attributes.

Returns

Type	Description
T[]	Attributes of specified type.

Type Parameters

Name	Description
T	Attribute type.

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GetAttributes<T>(Type, Boolean)

Gets attributes of specified type, associated with specified type.

Declaration

public T[] GetAttributes<T>(Type type, bool inherit = true)
    where T : Attribute

Parameters

Type	Name	Description
Type	type	Attributes owner type.
System.Boolean	inherit	If `true` - include inherited attributes.

Returns

Type	Description
T[]	Attributes of specified type.

Type Parameters

Name	Description
T	Attribute type.

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GetCanBeNull(Type)

Returns true, if value of specified type could contain null.

Declaration

public bool GetCanBeNull(Type type)

Parameters

Type	Name	Description
Type	type	Value type.

Returns

Type	Description
System.Boolean	Returns `true` if specified type supports `null` values.

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GetConverter<TFrom, TTo>()

Returns conversion delegate for conversion from TFrom type to TTo type.

Declaration

public Func<TFrom, TTo>? GetConverter<TFrom, TTo>()

Returns

Type	Description
System.Nullable<Func<TFrom, TTo>>	Conversion delegate or `null` if conversion is not defined.

Type Parameters

Name	Description
TFrom	Source type.
TTo	Target type.

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GetConvertExpression(DbDataType, DbDataType, Boolean, Boolean)

Returns conversion expression from from type to to type.

Declaration

public LambdaExpression? GetConvertExpression(DbDataType from, DbDataType to, bool checkNull = true, bool createDefault = true)

Parameters

Type	Name	Description
DbDataType	from	Source type.
DbDataType	to	Target type.
System.Boolean	checkNull	If `true`, and source type could contain `null`, conversion expression will check converted value for `null` and replace it with default value. for more details.
System.Boolean	createDefault	Create new conversion expression, if conversion is not defined.

Returns

Type	Description
System.Nullable<LambdaExpression>	Conversion expression or `null`, if there is no such conversion and `createDefault` is `false`.

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GetConvertExpression(Type, Type, Boolean, Boolean)

Returns conversion expression from from type to to type.

Declaration

public LambdaExpression? GetConvertExpression(Type from, Type to, bool checkNull = true, bool createDefault = true)

Parameters

Type	Name	Description
Type	from	Source type.
Type	to	Target type.
System.Boolean	checkNull	If `true`, and source type could contain `null`, conversion expression will check converted value for `null` and replace it with default value. for more details.
System.Boolean	createDefault	Create new conversion expression, if conversion is not defined.

Returns

Type	Description
System.Nullable<LambdaExpression>	Conversion expression or `null`, if there is no such conversion and `createDefault` is `false`.

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GetConvertExpression<TFrom, TTo>(Boolean, Boolean)

Returns conversion expression from TFrom type to TTo type.

Declaration

public Expression<Func<TFrom, TTo>>? GetConvertExpression<TFrom, TTo>(bool checkNull = true, bool createDefault = true)

Parameters

Type	Name	Description
System.Boolean	checkNull	If `true`, and source type could contain `null`, conversion expression will check converted value for `null` and replace it with default value. for more details.
System.Boolean	createDefault	Create new conversion expression, if conversion is not defined.

Returns

Type	Description
System.Nullable<Expression<Func<TFrom, TTo>>>	Conversion expression or `null`, if there is no such conversion and `createDefault` is `false`.

Type Parameters

Name	Description
TFrom	Source type.
TTo	Target type.

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GetDataType(Type)

Returns database type mapping information for specified type.

Declaration

public SqlDataType GetDataType(Type type)

Parameters

Type	Name	Description
Type	type	Mapped type.

Returns

Type	Description
SqlDataType	Database type information.

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GetDefaultFromEnumType(Type)

Returns type, to which provided enumeration type is mapped or null, if type is not configured. See SetDefaultFromEnumType(Type, Type).

Declaration

public Type? GetDefaultFromEnumType(Type enumType)

Parameters

Type	Name	Description
Type	enumType	Enumeration type.

Returns

Type	Description
System.Nullable<Type>	Mapped type or `null`.

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GetDefaultValue(Type)

Returns default value for specified type. Default value is a value, used instead of NULL value, read from database.

Declaration

public object? GetDefaultValue(Type type)

Parameters

Type	Name	Description
Type	type	Value type.

Returns

Type	Description
System.Nullable<System.Object>	Returns default value for type.

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GetDefinedTypes()

Enumerates types registered by FluentMetadataBuilder.

Declaration

public Type[] GetDefinedTypes()

Returns

Type	Description
Type[]	Returns array with all types, mapped by fluent mappings.

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GetDynamicColumns(Type)

Gets the dynamic columns defined on given type.

Declaration

public MemberInfo[] GetDynamicColumns(Type type)

Parameters

Type	Name	Description
Type	type	The type.

Returns

Type	Description
MemberInfo[]	All dynamic columns defined on given type.

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GetEntityDescriptor(Type)

Returns mapped entity descriptor.

Declaration

public EntityDescriptor GetEntityDescriptor(Type type)

Parameters

Type	Name	Description
Type	type	Mapped type.

Returns

Type	Description
EntityDescriptor	Mapping descriptor.

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GetFluentMappingBuilder()

Gets fluent mapping builder for current schema.

Declaration

public FluentMappingBuilder GetFluentMappingBuilder()

Returns

Type	Description
FluentMappingBuilder	Fluent mapping builder.

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GetMapValues(Type)

Returns enum type mapping information or null for non-enum types.

Declaration

public virtual MapValue[] GetMapValues(Type type)

Parameters

Type	Name	Description
Type	type	Mapped type.

Returns

Type	Description
MapValue[]	Mapping values for enum type and `null` for non-enum types.

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GetUnderlyingDataType(Type, out Boolean)

Returns scalar database type mapping information for provided type.

Declaration

public SqlDataType GetUnderlyingDataType(Type type, out bool canBeNull)

Parameters

Type	Name	Description
Type	type	Mapped type.
System.Boolean	canBeNull	Returns `true`, if `type` type is enum with mapping to `null` value. Initial parameter value, passed to this method is not used.

Returns

Type	Description
SqlDataType	Scalar database type information.

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InitGenericConvertProvider(Type[])

Initialize generic conversions for specific type parameters.

Declaration

public bool InitGenericConvertProvider(params Type[] types)

Parameters

Type	Name	Description
Type[]	types	Generic type parameters.

Returns

Type	Description
System.Boolean	Returns `true` if new generic type conversions could have added to mapping schema.

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InitGenericConvertProvider<T>()

Initialize generic conversions for specific type parameter.

Declaration

public void InitGenericConvertProvider<T>()

Type Parameters

Name	Description
T	Generic type parameter, for which converters should be initialized.

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IsScalarType(Type)

Returns true, if provided type mapped to scalar database type in current schema.

Declaration

public bool IsScalarType(Type type)

Parameters

Type	Name	Description
Type	type	Type to check.

Returns

Type	Description
System.Boolean	`true`, if type mapped to scalar database type.

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SetCanBeNull(Type, Boolean)

Sets null value support flag for specified type.

Declaration

public void SetCanBeNull(Type type, bool value)

Parameters

Type	Name	Description
Type	type	Value type.
System.Boolean	value	If `true`, specified type value could contain `null`.

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SetConverter<TFrom, TTo>(Func<TFrom, TTo>)

Specify conversion delegate for conversion from TFrom type to TTo type.

Declaration

public void SetConverter<TFrom, TTo>(Func<TFrom, TTo> func)

Parameters

Type	Name	Description
Func<TFrom, TTo>	func	Conversion delegate.

Type Parameters

Name	Description
TFrom	Source type.
TTo	Target type.

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SetConverter<TFrom, TTo>(Func<TFrom, TTo>, DbDataType, DbDataType)

Specify conversion delegate for conversion from TFrom type to TTo type.

Declaration

public void SetConverter<TFrom, TTo>(Func<TFrom, TTo> func, DbDataType from, DbDataType to)

Parameters

Type	Name	Description
Func<TFrom, TTo>	func	Conversion delegate.
DbDataType	from	Source type detalization
DbDataType	to	Target type detalization

Type Parameters

Name	Description
TFrom	Source type.
TTo	Target type.

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SetConvertExpression(DbDataType, DbDataType, LambdaExpression, Boolean)

Specify conversion expression for conversion from fromType type to toType type.

Declaration

public void SetConvertExpression(DbDataType fromType, DbDataType toType, LambdaExpression expr, bool addNullCheck = true)

Parameters

Type	Name	Description
DbDataType	fromType	Source type.
DbDataType	toType	Target type.
LambdaExpression	expr	Conversion expression.
System.Boolean	addNullCheck	If `true`, conversion expression will be wrapped with default value substitution logic for `null` values. Wrapper will be added only if source type can have `null` values and conversion expression doesn't use default value provider. See DefaultValue<T> and DefaultValue types for more details.

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SetConvertExpression(Type, Type, LambdaExpression, Boolean)

Specify conversion expression for conversion from fromType type to toType type.

Declaration

public void SetConvertExpression(Type fromType, Type toType, LambdaExpression expr, bool addNullCheck = true)

Parameters

Type	Name	Description
Type	fromType	Source type.
Type	toType	Target type.
LambdaExpression	expr	Conversion expression.
System.Boolean	addNullCheck	If `true`, conversion expression will be wrapped with default value substitution logic for `null` values. Wrapper will be added only if source type can have `null` values and conversion expression doesn't use default value provider. See DefaultValue<T> and DefaultValue types for more details.

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SetConvertExpression<TFrom, TTo>(Expression<Func<TFrom, TTo>>, Expression<Func<TFrom, TTo>>)

Specify conversion expression for conversion from TFrom type to TTo type.

Declaration

public void SetConvertExpression<TFrom, TTo>(Expression<Func<TFrom, TTo>> checkNullExpr, Expression<Func<TFrom, TTo>> expr)

Parameters

Type	Name	Description
Expression<Func<TFrom, TTo>>	checkNullExpr	`null` values conversion expression.
Expression<Func<TFrom, TTo>>	expr	Conversion expression.

Type Parameters

Name	Description
TFrom	Source type.
TTo	Target type.

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SetConvertExpression<TFrom, TTo>(Expression<Func<TFrom, TTo>>, Boolean)

Specify conversion expression for conversion from TFrom type to TTo type.

Declaration

public void SetConvertExpression<TFrom, TTo>(Expression<Func<TFrom, TTo>> expr, bool addNullCheck = true)

Parameters

Type	Name	Description
Expression<Func<TFrom, TTo>>	expr	Conversion expression.
System.Boolean	addNullCheck	If `true`, conversion expression will be wrapped with default value substitution logic for `null` values. Wrapper will be added only if source type can have `null` values and conversion expression doesn't use default value provider. See DefaultValue<T> and DefaultValue types for more details.

Type Parameters

Name	Description
TFrom	Source type.
TTo	Target type.

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SetCultureInfo(CultureInfo)

Set conversion expressions for conversion from and to string for basic types (byte, sbyte, short, ushort, int, uint, long, ulong , float, double, decimal, DateTime, DateTimeOffset) using provided culture format providers.

Declaration

public void SetCultureInfo(CultureInfo info)

Parameters

Type	Name	Description
CultureInfo	info	Culture with format providers for conversions.

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SetDataType(Type, DataType)

Associate specified type with LINQ to DB data type.

Declaration

public void SetDataType(Type type, DataType dataType)

Parameters

Type	Name	Description
Type	type	Mapped type.
DataType	dataType	LINQ to DB data type.

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SetDataType(Type, SqlDataType)

Associate specified type with database data type.

Declaration

public void SetDataType(Type type, SqlDataType dataType)

Parameters

Type	Name	Description
Type	type	Mapped type.
SqlDataType	dataType	Database data type.

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SetDefaultFromEnumType(Type, Type)

Sets type, to which provided enumeration type should be mapped.

Declaration

public void SetDefaultFromEnumType(Type enumType, Type defaultFromType)

Parameters

Type	Name	Description
Type	enumType	Enumeration type.
Type	defaultFromType	Mapped type.

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SetDefaultValue(Type, Nullable<Object>)

Sets default value for specific type. Default value is a value, used instead of NULL value, read from database.

Declaration

public void SetDefaultValue(Type type, object? value)

Parameters

Type	Name	Description
Type	type	Value type.
System.Nullable<System.Object>	value	Default value.

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SetGenericConvertProvider(Type)

Adds generic type conversions provider. Type converter must implement IGenericInfoProvider interface. IGenericInfoProvider for more details and examples.

Declaration

public void SetGenericConvertProvider(Type type)

Parameters

Type	Name	Description
Type	type	Generic type conversions provider.

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SetScalarType(Type, Boolean)

Configure how provided type should be handled during mapping to database - as scalar value or composite type.

Declaration

public void SetScalarType(Type type, bool isScalarType = true)

Parameters

Type	Name	Description
Type	type	Type to configure.
System.Boolean	isScalarType	`true`, if provided type should be mapped to scalar database value.

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SetValueToSqlConverter(Type, Action<StringBuilder, SqlDataType, DataOptions, Object>)

Sets value to SQL converter action for specific value type.

Declaration

public void SetValueToSqlConverter(Type type, Action<StringBuilder, SqlDataType, DataOptions, object> converter)

Parameters

Type	Name	Description
Type	type	Value type.
Action<StringBuilder, SqlDataType, DataOptions, System.Object>	converter	Converter action. Action accepts three parameters: SQL string builder to write generated value SQL to; value SQL type descriptor; value.

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SetValueToSqlConverter(Type, Action<StringBuilder, SqlDataType, Object>)

Sets value to SQL converter action for specific value type.

Declaration

public void SetValueToSqlConverter(Type type, Action<StringBuilder, SqlDataType, object> converter)

Parameters

Type	Name	Description
Type	type	Value type.
Action<StringBuilder, SqlDataType, System.Object>	converter	Converter action. Action accepts three parameters: SQL string builder to write generated value SQL to; value SQL type descriptor; value.

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TryGetConvertExpression(Type, Type)

Returns custom value conversion expression from from type to to type if it is defined in mapping schema, or null otherwise.

Declaration

public virtual LambdaExpression? TryGetConvertExpression(Type from, Type to)

Parameters

Type	Name	Description
Type	from	Source type.
Type	to	Target type.

Returns

Type	Description
System.Nullable<LambdaExpression>	Conversion expression or `null`, if conversion is not defined.

Explicit Interface Implementations

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IConfigurationID.ConfigurationID

Unique schema configuration identifier. For internal use only.

Declaration

int IConfigurationID.ConfigurationID { get; }

Returns

Type	Description
System.Int32

Implements

IConfigurationID

Extension Methods

MappingSchemaExtensions.GetEqualityComparer<T>(MappingSchema, Func<ColumnDescriptor, Boolean>)

MappingSchemaExtensions.GetEntityEqualityComparer<T>(MappingSchema)

MappingSchemaExtensions.GetKeyEqualityComparer<T>(MappingSchema)

Map.DeepCopy<T>(T)

Sql.IsDistinctFrom<T>(T, T)

Sql.IsNotDistinctFrom<T>(T, T)

SqlExtensions.In<T>(T, IEnumerable<T>)

SqlExtensions.In<T>(T, IQueryable<T>)

SqlExtensions.In<T>(T, T[])

SqlExtensions.In<T>(T, T, T)

SqlExtensions.In<T>(T, T, T, T)

SqlExtensions.NotIn<T>(T, IEnumerable<T>)

SqlExtensions.NotIn<T>(T, IQueryable<T>)

SqlExtensions.NotIn<T>(T, T[])

SqlExtensions.NotIn<T>(T, T, T)

SqlExtensions.NotIn<T>(T, T, T, T)