[备忘]NHibernate映射类型

System.ValueType Mapping Types

NHibernate Type	.NET Type	Database Type	Remarks
AnsiChar	System.Char	DbType.AnsiStringFixedLength - 1 char
Boolean	System.Boolean	DbType.Boolean	Default when no type attribute specified.
Byte	System.Byte	DbType.Byte	Default when no type attribute specified.
Char	System.Char	DbType.StringFixedLength - 1 char	Default when no type attribute specified.
DateTime	System.DateTime	DbType.DateTime - ignores the milliseconds	Default when no type attribute specified.
LocalDateTime	System.DateTime	DbType.DateTime - ignores the milliseconds	Ensures the DateTimeKind is set to DateTimeKind.Local
UtcDateTime	System.DateTime	DbType.DateTime - ignores the milliseconds	Ensures the DateTimeKind is set to DateTimeKind.Utc
Decimal	System.Decimal	DbType.Decimal	Default when no type attribute specified.
Double	System.Double	DbType.Double	Default when no type attribute specified.
Guid	System.Guid	DbType.Guid	Default when no type attribute specified.
Int16	System.Int16	DbType.Int16	Default when no type attribute specified.
Int32	System.Int32	DbType.Int32	Default when no type attribute specified.
Int64	System.Int64	DbType.Int64	Default when no type attribute specified.
PersistentEnum	A System.Enum	The DbType for the underlying value.	Do not specify type="PersistentEnum" in the mapping. Instead specify the Assembly Qualified Name of the Enum or let NHibernate use Reflection to "guess" the Type. The UnderlyingType of the Enum is used to determine the correct DbType.
Single	System.Single	DbType.Single	Default when no type attribute specified.
Ticks	System.DateTime	DbType.Int64	type="Ticks" must be specified.
TimeSpan	System.TimeSpan	DbType.Int64	Default when no type attribute specified.
Timestamp	System.DateTime	DbType.DateTime - as specific as database supports.	type="Timestamp" must be specified.
TrueFalse	System.Boolean	DbType.AnsiStringFixedLength - 1 char either 'T' or 'F'	type="TrueFalse" must be specified.
YesNo	System.Boolean	DbType.AnsiStringFixedLength - 1 char either 'Y' or 'N'	type="YesNo" must be specified.

System.Object Mapping Types

NHibernate Type	.NET Type	Database Type	Remarks
AnsiString	System.String	DbType.AnsiString	type="AnsiString" must be specified.
CultureInfo	System.Globalization.CultureInfo	DbType.String - 5 chars for culture	Default when no type attribute specified.
Binary	System.Byte[]	DbType.Binary	Default when no type attribute specified.
Type	System.Type	DbType.String holding Assembly Qualified Name.	Default when no type attribute specified.
String	System.String	DbType.String	Default when no type attribute specified.

Large Object Mapping Types

NHibernate Type	.NET Type	Database Type	Remarks
StringClob	System.String	DbType.String	type="StringClob" must be specified. Entire field is read into memory.
BinaryBlob	System.Byte[]	DbType.Binary	type="BinaryBlob" must be specified. Entire field is read into memory.
Serializable	Any System.Object that is marked with SerializableAttribute.	DbType.Binary	type="Serializable" should be specified. This is the fallback type if no NHibernate Type can be found for the Property.

摘自：

http://nhforge.org/doc/nh/en/#mapping-types