Class CqlParameter

Represents a Cql parameter.

Inheritance

object

MarshalByRefObject

DbParameter

CqlParameter

Implements

IDbDataParameter

IDataParameter

Inherited Members

DbParameter.Precision

DbParameter.Scale

MarshalByRefObject.GetLifetimeService()

MarshalByRefObject.InitializeLifetimeService()

MarshalByRefObject.MemberwiseClone(bool)

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: Cassandra.Data

Assembly: Cassandra.dll

Syntax

public class CqlParameter : DbParameter, IDbDataParameter, IDataParameter

Constructors

CqlParameter()

Initializes a new instance of the CqlParameter class.

Declaration

public CqlParameter()

CqlParameter(string)

Initializes a new instance of the CqlParameter class.

Declaration

public CqlParameter(string name)

Parameters

Type	Name	Description
string	name	The name.

CqlParameter(string, object)

Initializes a new instance of the CqlParameter class. The type of the parameter will be guessed from the value.

Declaration

public CqlParameter(string name, object value)

Parameters

Type	Name	Description
string	name	The name.
object	value	The value.

Properties

DbType

Gets or sets the DbType of the parameter.

Declaration

public override DbType DbType { get; set; }

Property Value

Type	Description
DbType

Overrides

DbParameter.DbType

Direction

Gets or sets a value indicating whether the parameter is input-only, output-only, bidirectional, or a stored procedure return value parameter.

Declaration

public override ParameterDirection Direction { get; set; }

Property Value

Type	Description
ParameterDirection	One of the ParameterDirection values. The default is Input.

Overrides

DbParameter.Direction

Exceptions

Type	Condition
NotSupportedException	Cql only supports input parameters

IsNullable

Gets a value indicating whether the parameter accepts null values.

Declaration

public override bool IsNullable { get; set; }

Property Value

Type	Description
bool	true if null values are accepted; otherwise, false. The default is false.

Overrides

DbParameter.IsNullable

ParameterName

Gets or sets the name of the IDataParameter.

Declaration

public override string ParameterName { get; set; }

Property Value

Type	Description
string	The name of the IDataParameter. The default is an empty string.

Overrides

DbParameter.ParameterName

Size

The size of the parameter.

Declaration

public override int Size { get; set; }

Property Value

Type	Description
int	Always returns 0.

Overrides

DbParameter.Size

SourceColumn

Gets or sets the name of the source column that is mapped to the DataSet and used for loading or returning the Value.

Declaration

public override string SourceColumn { get; set; }

Property Value

Type	Description
string	The name of the source column that is mapped to the DataSet. The default is an empty string.

Overrides

DbParameter.SourceColumn

SourceColumnNullMapping

Sets or gets a value which indicates whether the source column is nullable. This allows DbCommandBuilder to correctly generate Update statements for nullable columns.

Declaration

public override bool SourceColumnNullMapping { get; set; }

Property Value

Type	Description
bool	true if the source column is nullable; false if it is not.

Overrides

DbParameter.SourceColumnNullMapping

SourceVersion

Gets or sets the DataRowVersion to use when loading Value.

Declaration

public override DataRowVersion SourceVersion { get; set; }

Property Value

Type	Description
DataRowVersion	One of the DataRowVersion values. The default is Current.

Overrides

DbParameter.SourceVersion

Value

Gets or sets the value of the parameter. If no type information was provided earlier, the type of the parameter will be guessed from the value's type.

Declaration

public override object Value { get; set; }

Property Value

Type	Description
object	An object that is the value of the parameter. The default value is null.

Overrides

DbParameter.Value

Methods

ResetDbType()

Resets the DbType property to its original settings.

Declaration

public override void ResetDbType()

Overrides

DbParameter.ResetDbType()

Implements

IDbDataParameter

IDataParameter