Performs a database calculation such as COUNT, SUM or AVG.

Namespace:  Mindscape.LightSpeed.ServiceModel
Assembly:  Mindscape.LightSpeed.ServiceModel (in Mindscape.LightSpeed.ServiceModel.dll)
Version: 4.0.0.0 (4.0.0.0)

Syntax

C#
public override Object Calculate(
	string calculation,
	IdentifierExpression attribute,
	Query query
)
Visual Basic (Declaration)
Public Overrides Function Calculate ( _
	calculation As String, _
	attribute As IdentifierExpression, _
	query As Query _
) As Object

Parameters

calculation
Type: System..::.String
A SQL fragment representing the target calculation function. E.g. "SUM".
attribute
Type: Mindscape.LightSpeed.Querying..::.IdentifierExpression
The target attribute.
query
Type: Mindscape.LightSpeed.Querying..::.Query
A Query.

Return Value

The result of the calculation.

Implements

IUnitOfWork..::.Calculate(String, IdentifierExpression, Query)
IUnitOfWork..::.Calculate(String, IdentifierExpression, Query)

Remarks

This overload allows you to specify functions on the attribute over which the calculation is performed. It is rarely used directly: it is normally preferable to use a LINQ query instead.

See Also