Class PartitionedMultiset

Implementation of a multiset which is suitable for multiple threads to write to in parallel, useful for parallelizing certain operations.
Inheritance
System.Object
BaseMultiset
PartitionedMultiset
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
Namespace: VDS.RDF.Query.Algebra
Assembly: dotNetRDF.dll
Syntax
public class PartitionedMultiset : BaseMultiset

Constructors

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PartitionedMultiset(Int32, Int32)

Creates a new Partionted Multiset.
Declaration
public PartitionedMultiset(int numPartitions, int partitionSize)
Parameters
Type Name Description
System.Int32 numPartitions Number of partitions.
System.Int32 partitionSize Partition Size.

Properties

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Count

Gets the number of sets in the multiset.
Declaration
public override int Count { get; }
Property Value
Type Description
System.Int32
Overrides
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IsEmpty

Gets whether the multiset is empty.
Declaration
public override bool IsEmpty { get; }
Property Value
Type Description
System.Boolean
Overrides
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Item[Int32]

Gets a Set from the multiset.
Declaration
public override ISet this[int id] { get; }
Parameters
Type Name Description
System.Int32 id
Property Value
Type Description
ISet
Overrides
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SetIDs

Gets the Set IDs in the mutliset.
Declaration
public override IEnumerable<int> SetIDs { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<System.Int32>
Overrides
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Sets

Gets the sets in the multiset.
Declaration
public override IEnumerable<ISet> Sets { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<ISet>
Overrides
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Variables

Gets the variables in the multiset.
Declaration
public override IEnumerable<string> Variables { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<System.String>
Overrides

Methods

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Add(ISet)

Adds a Set to the multiset.
Declaration
public override void Add(ISet s)
Parameters
Type Name Description
ISet s Set.
Overrides
Remarks
Assumes the caller has set the ID of the set appropriately and will use this to determine which partition to add to.
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AddVariable(String)

Adds a Variable to the multiset.
Declaration
public override void AddVariable(string variable)
Parameters
Type Name Description
System.String variable Variable.
Overrides
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ContainsValue(String, INode)

Determines whether a given Value is present for a given Variable in any Set in this Multiset.
Declaration
public override bool ContainsValue(string var, INode n)
Parameters
Type Name Description
System.String var Variable.
INode n Value.
Returns
Type Description
System.Boolean
Overrides
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ContainsVariable(String)

Returns whether a given Variable is present in any Set in this Multiset.
Declaration
public override bool ContainsVariable(string var)
Parameters
Type Name Description
System.String var Variable.
Returns
Type Description
System.Boolean
Overrides
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GetNextBaseID()

Gets the next Base ID to be used.
Declaration
public int GetNextBaseID()
Returns
Type Description
System.Int32
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IsDisjointWith(BaseMultiset)

Determines whether this Multiset is disjoint with another Multiset.
Declaration
public override bool IsDisjointWith(BaseMultiset other)
Parameters
Type Name Description
BaseMultiset other Other Multiset.
Returns
Type Description
System.Boolean
Overrides
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Remove(Int32)

Removes a Set from the multiset.
Declaration
public override void Remove(int id)
Parameters
Type Name Description
System.Int32 id Set ID.
Overrides
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SetVariableOrder(IEnumerable<String>)

Sets the variable ordering for the multiset.
Declaration
public override void SetVariableOrder(IEnumerable<string> variables)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<System.String> variables Variable Ordering.
Overrides
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Trim()

Removes temporary variables from all sets the multiset.
Declaration
public override void Trim()
Overrides
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Trim(String)

Removes a specific variable from all sets in the multiset.
Declaration
public override void Trim(string variable)
Parameters
Type Name Description
System.String variable Variable.
Overrides
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Union(BaseMultiset)

Does a Union of this Multiset and another Multiset.
Declaration
public override BaseMultiset Union(BaseMultiset other)
Parameters
Type Name Description
BaseMultiset other Other Multiset.
Returns
Type Description
BaseMultiset
Overrides

Extension Methods