Clase NamedSet
Represents a named set for a given cube.
Jerarquía de herencia
System.Object
Microsoft.AnalysisServices.AdomdClient.NamedSet
Espacio de nombres: Microsoft.AnalysisServices.AdomdClient
Ensamblado: Microsoft.AnalysisServices.AdomdClient (en Microsoft.AnalysisServices.AdomdClient.dll)
Sintaxis
'Declaración
Public NotInheritable Class NamedSet
'Uso
Dim instance As NamedSet
public sealed class NamedSet
public ref class NamedSet sealed
[<SealedAttribute>]
type NamedSet = class end
public final class NamedSet
El tipo NamedSet expone los siguientes miembros.
Propiedades
Nombre | Descripción | |
---|---|---|
Caption | Gets the caption of the named set. | |
Description | Gets the description of the NamedSet. | |
DisplayFolder | Gets the fully qualified name of a display folder. | |
Expression | Gets the MDX set expression that defines the NamedSet. | |
Name | Gets the name of the NamedSet. | |
ParentCube | Gets a CubeDef that contains the NamedSet. | |
Properties | Gets a PropertyCollection that contains the properties associated with the NamedSet. |
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Métodos
Nombre | Descripción | |
---|---|---|
Equals | Determines whether two instances of NamedSet are equal. (Invalida Object.Equals(Object).) | |
GetHashCode | Serves as a hash function for a particular type, suitable for use in hashing algorithms and data structures such as hash tables. (Invalida Object.GetHashCode().) | |
GetType | (Se hereda de Object.) | |
ToString | Returns a String that represents the current object. (Invalida Object.ToString().) |
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Operadores
Nombre | Descripción | |
---|---|---|
Equality | Determines whether two specified instances of NamedSet the same values. | |
Inequality | Determines whether two specified instances of NamedSet have different values. |
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Comentarios
A named set is a persisted set expression, which is associated with an alias and defined as part of the structure of a cube. In Multidimensional Expressions (MDX), a set expression can be a lengthy and complex declaration. A named set makes it easier to manage a set expression that is used regularly in MDX or XML for Analysis queries that involve the cube and provides a way of maintaining the set expression independently of the queries that use it.
A NamedSet encapsulates the alias and set expression of a named set, so that the metadata of the named set can be examined and incorporated into queries.
Ejemplos
The following subroutine, given a CubeDef, iterates through the NamedSets collection and displays information about each NamedSet in the collection:
Public Sub ListNamedSets(ByRef CubeToCheck As CubeDef)
' Check the parameter before performing actions on it.
If CubeToCheck Is Nothing Then
Throw New System.ArgumentNullException("CubeToCheck")
Else
' Iterate through the NamedSets collection of the
' CubeDef object.
Try
Dim nsetToCheck As NamedSet
Debug.WriteLine("Found " & CubeToCheck.NamedSets.Count & _
" named set(s) in cube:")
For Each nsetToCheck In CubeToCheck.NamedSets
Debug.WriteLine("Named Set: " & nsetToCheck.Name)
Debug.WriteLine(" Description: " & _
nsetToCheck.Description)
Debug.WriteLine(" Expression: " & _
nsetToCheck.Expression)
Next
Catch ex As AdomdConnectionException
' The connection could not be opened or was disconnected.
' This error can occur at any time, if the provider is
' disconnected from the server.
Debug.WriteLine(ex)
Throw ex
Catch ex As AdomdErrorResponseException
' A response is received from a provider which indicates an error.
Debug.WriteLine(ex)
Throw ex
Catch ex As AdomdUnknownResponseException
' A response has been returned from the provider that
' was not understood.
Debug.WriteLine(ex)
Throw ex
Catch ex As AdomdCacheExpiredException
' A cached version of an ADOMD.NET object is no longer valid.
' This error is typically raised when reviewing metadata.
Debug.WriteLine(ex)
Throw ex
Catch ex As AdomdException
' Any other error raised by ADOMD.NET.
Debug.WriteLine(ex)
Throw ex
Catch ex As Exception
' Any other error.
Debug.WriteLine(ex)
Throw ex
End Try
End If
End Sub
Seguridad para subprocesos
Cualquier miembro público static (Shared en Visual Basic) de este tipo es seguro para subprocesos. No se garantiza que los miembros de instancia sean seguros para subprocesos.