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    Class MoneyHandler

    A type handler for the PostgreSQL money data type.

    Inheritance
    Object
    NpgsqlTypeHandler
    NpgsqlTypeHandler<Decimal>
    NpgsqlSimpleTypeHandler<Decimal>
    MoneyHandler
    Implements
    INpgsqlTypeHandler<Decimal>
    INpgsqlSimpleTypeHandler<Decimal>
    Inherited Members
    NpgsqlSimpleTypeHandler<Decimal>.Read(NpgsqlReadBuffer, Int32, Boolean, FieldDescription)
    NpgsqlSimpleTypeHandler<Decimal>.Write(Decimal, NpgsqlWriteBuffer, NpgsqlLengthCache, NpgsqlParameter, Boolean, CancellationToken)
    NpgsqlSimpleTypeHandler<Decimal>.ValidateAndGetLength(Decimal, NpgsqlLengthCache, NpgsqlParameter)
    NpgsqlTypeHandler<Decimal>.ReadAsObject(NpgsqlReadBuffer, Int32, Boolean, FieldDescription)
    NpgsqlTypeHandler<Decimal>.GetFieldType(FieldDescription)
    NpgsqlTypeHandler<Decimal>.GetProviderSpecificFieldType(FieldDescription)
    NpgsqlTypeHandler<Decimal>.CreateArrayHandler(PostgresArrayType, ArrayNullabilityMode)
    NpgsqlTypeHandler<Decimal>.CreateRangeHandler(PostgresType)
    NpgsqlTypeHandler<Decimal>.CreateMultirangeHandler(PostgresMultirangeType)
    NpgsqlTypeHandler.PostgresType
    NpgsqlTypeHandler.Read<TAny>(NpgsqlReadBuffer, Int32, Boolean, FieldDescription)
    NpgsqlTypeHandler.Read<TAny>(NpgsqlReadBuffer, Int32, FieldDescription)
    NpgsqlTypeHandler.ReadCustom<TAny>(NpgsqlReadBuffer, Int32, Boolean, FieldDescription)
    NpgsqlTypeHandler.ValidateAndGetLength<TAny>(TAny, NpgsqlLengthCache, NpgsqlParameter)
    NpgsqlTypeHandler.ValidateAndGetLengthCustom<TAny>(TAny, NpgsqlLengthCache, NpgsqlParameter)
    NpgsqlTypeHandler.WriteWithLength<TAny>(TAny, NpgsqlWriteBuffer, NpgsqlLengthCache, NpgsqlParameter, Boolean, CancellationToken)
    NpgsqlTypeHandler.WriteWithLengthCustom<TAny>(TAny, NpgsqlWriteBuffer, NpgsqlLengthCache, NpgsqlParameter, Boolean, CancellationToken)
    NpgsqlTypeHandler.ValidateObjectAndGetLength(Object, NpgsqlLengthCache, NpgsqlParameter)
    NpgsqlTypeHandler.WriteObjectWithLength(Object, NpgsqlWriteBuffer, NpgsqlLengthCache, NpgsqlParameter, Boolean, CancellationToken)
    NpgsqlTypeHandler.CreateConversionButNoParamException(Type)
    Object.Equals(Object)
    Object.Equals(Object, Object)
    Object.GetHashCode()
    Object.GetType()
    Object.MemberwiseClone()
    Object.ReferenceEquals(Object, Object)
    Object.ToString()
    Namespace: Npgsql.Internal.TypeHandlers.NumericHandlers
    Assembly: Npgsql.dll
    Syntax
    public class MoneyHandler : NpgsqlSimpleTypeHandler<decimal>, INpgsqlTypeHandler<decimal>, INpgsqlSimpleTypeHandler<decimal>
    Remarks

    See https://www.postgresql.org/docs/current/static/datatype-money.html.

    The type handler API allows customizing Npgsql's behavior in powerful ways. However, although it is public, it should be considered somewhat unstable, and may change in breaking ways, including in non-major releases. Use it at your own risk.

    Constructors

    MoneyHandler(PostgresType)

    Declaration
    public MoneyHandler(PostgresType pgType)
    Parameters
    Type Name Description
    PostgresType pgType

    Methods

    Read(NpgsqlReadBuffer, Int32, FieldDescription)

    Reads a value of type TDefault with the given length from the provided buffer, with the assumption that it is entirely present in the provided memory buffer and no I/O will be required.

    Declaration
    public override decimal Read(NpgsqlReadBuffer buf, int len, FieldDescription fieldDescription = null)
    Parameters
    Type Name Description
    NpgsqlReadBuffer buf

    The buffer from which to read.

    Int32 len

    The byte length of the value. The buffer might not contain the full length, requiring I/O to be performed.

    FieldDescription fieldDescription

    Additional PostgreSQL information about the type, such as the length in varchar(30).

    Returns
    Type Description
    Decimal

    The fully-read value.

    Overrides
    Npgsql.Internal.TypeHandling.NpgsqlSimpleTypeHandler<System.Decimal>.Read(Npgsql.Internal.NpgsqlReadBuffer, System.Int32, Npgsql.BackendMessages.FieldDescription)

    ValidateAndGetLength(Decimal, NpgsqlParameter)

    Responsible for validating that a value represents a value of the correct and which can be written for PostgreSQL - if the value cannot be written for any reason, an exception shold be thrown. Also returns the byte length needed to write the value.

    Declaration
    public override int ValidateAndGetLength(decimal value, NpgsqlParameter parameter)
    Parameters
    Type Name Description
    Decimal value
    NpgsqlParameter parameter

    The NpgsqlParameter instance where this value resides. Can be used to access additional information relevant to the write process (e.g. Size).

    Returns
    Type Description
    Int32

    The number of bytes required to write the value.

    Overrides
    Npgsql.Internal.TypeHandling.NpgsqlSimpleTypeHandler<System.Decimal>.ValidateAndGetLength(System.Decimal, Npgsql.NpgsqlParameter)

    Write(Decimal, NpgsqlWriteBuffer, NpgsqlParameter)

    Writes a value to the provided buffer, with the assumption that there is enough space in the buffer (no I/O will occur). The Npgsql core will have taken care of that.

    Declaration
    public override void Write(decimal value, NpgsqlWriteBuffer buf, NpgsqlParameter parameter)
    Parameters
    Type Name Description
    Decimal value
    NpgsqlWriteBuffer buf

    The buffer to which to write.

    NpgsqlParameter parameter

    The NpgsqlParameter instance where this value resides. Can be used to access additional information relevant to the write process (e.g. Size).

    Overrides
    Npgsql.Internal.TypeHandling.NpgsqlSimpleTypeHandler<System.Decimal>.Write(System.Decimal, Npgsql.Internal.NpgsqlWriteBuffer, Npgsql.NpgsqlParameter)

    Implements

    INpgsqlTypeHandler<T>
    INpgsqlSimpleTypeHandler<T>
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