Class SparqlResultSet

Class for representing Sparql Result Sets.

Inheritance

object

SparqlResultSet

Implements

IEnumerable<ISparqlResult>

IEnumerable

IDisposable

IEquatable<SparqlResultSet>

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: VDS.RDF.Query

Assembly: dotNetRdf.dll

Syntax

public sealed class SparqlResultSet : IEnumerable<ISparqlResult>, IEnumerable, IDisposable, IEquatable<SparqlResultSet>

Constructors

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SparqlResultSet()

Creates an Empty Sparql Result Set.

Declaration

public SparqlResultSet()

Remarks

Useful where you need a possible guarantee of returning an result set even if it proves to be empty and also necessary for the implementation of Result Set Parsers.

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SparqlResultSet(bool)

Creates a Sparql Result Set for the Results of an ASK Query with the given Result value.

Declaration

public SparqlResultSet(bool result)

Parameters

Type	Name	Description
bool	result

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SparqlResultSet(IEnumerable<ISparqlResult>)

Creates a Sparql Result Set for the collection of results.

Declaration

public SparqlResultSet(IEnumerable<ISparqlResult> results)

Parameters

Type	Name	Description
IEnumerable<ISparqlResult>	results	Results.

Properties

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Count

Gets the number of Results in the Result Set.

Declaration

public int Count { get; }

Property Value

Type	Description
int

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IsEmpty

Gets whether the Result Set is empty and can have Results loaded into it.

Declaration

public bool IsEmpty { get; }

Property Value

Type	Description
bool

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this[int]

Index directly into the Results.

Declaration

public ISparqlResult this[int index] { get; }

Parameters

Type	Name	Description
int	index	Index of the Result you wish to retrieve.

Property Value

Type	Description
ISparqlResult

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Result

Gets the Result of an ASK Query.

Declaration

public bool Result { get; }

Property Value

Type	Description
bool

Remarks

Result Set is deemed to refer to an ASK query if the Variables list is empty since an ASK Query result has an empty <head>. It is always true for any other Query type where one/more variables were requested even if the Result Set is empty.

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Results

Gets the List of Results.

Declaration

public List<ISparqlResult> Results { get; }

Property Value

Type	Description
List<ISparqlResult>

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ResultsType

Gets the Type of the Results Set.

Declaration

public SparqlResultsType ResultsType { get; }

Property Value

Type	Description
SparqlResultsType

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Variables

Gets the Variables used in the Result Set.

Declaration

public IEnumerable<string> Variables { get; }

Property Value

Type	Description
IEnumerable<string>

Remarks

As of 1.0 where possible dotNetRDF tries to preserve the ordering of variables however this may not be possible depending on where the result set originates from or how it is populated.

Methods

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Dispose()

Disposes of a Result Set.

Declaration

public void Dispose()

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Equals(SparqlResultSet)

Determines whether two results sets are equal.

Declaration

public bool Equals(SparqlResultSet results)

Parameters

Type	Name	Description
SparqlResultSet	results	The other result set to compare with this one.

Returns

Type	Description
bool	True if the result sets contain the same set of results (using graph comparison where blank nodes are involved), false otherwise.

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GetEnumerator()

Gets an Enumerator for the Results List.

Declaration

public IEnumerator<ISparqlResult> GetEnumerator()

Returns

Type	Description
IEnumerator<ISparqlResult>

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ToTripleCollection(IGraph)

Converts a Result Set into a Triple Collection.

Declaration

public BaseTripleCollection ToTripleCollection(IGraph g)

Parameters

Type	Name	Description
IGraph	g	Graph to generate the Nodes in.

Returns

Type	Description
BaseTripleCollection

Remarks

Assumes the Result Set contains three variables ?s, ?p and ?o to use as the Subject, Predicate and Object respectively. Only Results for which all three variables have bound values will generate Triples.

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ToTripleCollection(IGraph, string, string, string, bool)

Converts a Result Set into a Triple Collection.

Declaration

public BaseTripleCollection ToTripleCollection(IGraph g, string subjVar, string predVar, string objVar, bool fullTripleIndex = true)

Parameters

Type	Name	Description
IGraph	g	Graph to generate the Nodes in.
string	subjVar	Variable whose value should be used for Subjects of Triples.
string	predVar	Variable whose value should be used for Predicates of Triples.
string	objVar	Variable whose value should be used for Object of Triples.
bool	fullTripleIndex	Indicates if the returned triple collection should include all indexes (true) or only the basic indexes (false).