Artikel
05/23/2011

SetBuilder Class

Provides the functionality to create immutable sets.

Inheritance Hierarchy

System.Object
Microsoft.AnalysisServices.AdomdServer.SetBuilder

Namespace: Microsoft.AnalysisServices.AdomdServer
Assembly: msmgdsrv (in msmgdsrv.dll)

Syntax

'Declaration
Public NotInheritable Class SetBuilder _
    Implements IDisposable
'Usage
Dim instance As SetBuilder

public sealed class SetBuilder : IDisposable

public ref class SetBuilder sealed : IDisposable

[<SealedAttribute>]
type SetBuilder =  
    class
        interface IDisposable
    end

public final class SetBuilder implements IDisposable

The SetBuilder type exposes the following members.

Constructors

	Name	Description
	SetBuilder()	Initializes a new instance of the SetBuilder class.
	SetBuilder(Tuple)	Initializes a new instance of the SetBuilder class, with a given Tuple.

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Properties

	Name	Description
	Count	Gets the number of Tuple objects in the set.
	Item	Gets the specified Tuple object.

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Methods

	Name	Description
	{dtor}	Releases all resources used by the SetBuilder.
	Add	Adds a Tuple to the set.
	Dispose	Releases all resources used by the SetBuilder.
	Equals	(Inherited from Object.)
	Finalize	(Inherited from Object.)
	GetHashCode	(Inherited from Object.)
	GetType	(Inherited from Object.)
	MemberwiseClone	(Inherited from Object.)
	ToSet	Gets a Set based on the specified Tuple objects.
	ToString	(Inherited from Object.)

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Examples

The following example takes a set and a return count, and randomly retrieves tuples from the set, returning a final subset.

public Set RandomSample(Set set, int returnCount)
{
    //Return the original set if there are fewer tuples
    //in the set than the number requested.
    if (set.Tuples.Count <= returnCount)
        return set;

    System.Random r = new System.Random();
    SetBuilder returnSet = new SetBuilder();

    //Retrieve random tuples until the return set is filled.
    int i = set.Tuples.Count;
    foreach (Tuple t in set.Tuples)
    {
        if (r.Next(i) < returnCount)
        {
            returnCount--;
            returnSet.Add(t);
        }
        i--;
        //Stop the loop if we have enough tuples.
        if (returnCount == 0)
            break;
    }
    return returnSet.ToSet();
}

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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