Class PartitionedMultiset

Implementation of a multiset which is suitable for multiple threads to write to in parallel, useful for parallelizing certain operations.

Inheritance
object
BaseMultiset
PartitionedMultiset
Inherited Members
Namespace: VDS.RDF.Query.Algebra
Assembly: dotNetRdf.dll
Syntax
public class PartitionedMultiset : BaseMultiset

Constructors

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PartitionedMultiset(int, int)

Creates a new Partionted Multiset.

Declaration
public PartitionedMultiset(int numPartitions, int partitionSize)
Parameters
Type Name Description
int numPartitions

Number of partitions.
int 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
int
Overrides
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IsEmpty

Gets whether the multiset is empty.

Declaration
public override bool IsEmpty { get; }
Property Value
Type Description
bool
Overrides
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this[int]

Gets a Set from the multiset.

Declaration
public override ISet this[int id] { get; }
Parameters
Type Name Description
int 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
IEnumerable<int>
Overrides
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Sets

Gets the sets in the multiset.

Declaration
public override IEnumerable<ISet> Sets { get; }
Property Value
Type Description
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
IEnumerable<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
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
string var

Variable.
INode n

Value.
Returns
Type Description
bool
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
string var

Variable.
Returns
Type Description
bool
Overrides
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ContainsVariables(IEnumerable<string>)

Returns whether the given Variables are present in any Set in this Multiset.

Declaration
public override bool ContainsVariables(IEnumerable<string> vars)
Parameters
Type Name Description
IEnumerable<string> vars

Variables.
Returns
Type Description
bool
Overrides
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GetNextBaseID()

Gets the next Base ID to be used.

Declaration
public int GetNextBaseID()
Returns
Type Description
int
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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
bool
Overrides
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Remove(int)

Removes a Set from the multiset.

Declaration
public override void Remove(int id)
Parameters
Type Name Description
int 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
IEnumerable<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
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