SetBuilder Class

Article
2014-03-24

Provides the functionality to create immutable sets.

Inheritance Hierarchy

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.)
	GetHashCode	(Inherited from Object.)
	GetType	(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 count that indicates the number of tuples to return, 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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