Class SparqlResult

Class for representing a Row of a Sparql Result Set.

Inheritance

System.Object

SparqlResult

Implements

ISparqlResult

System.Collections.Generic.IEnumerable<T><KeyValuePair<string, INode>>

System.Collections.IEnumerable

System.IEquatable<T><ISparqlResult>

Inherited Members

object.Equals(object, object)

object.GetType()

object.ReferenceEquals(object, object)

Namespace: VDS.RDF.Query

Assembly: dotNetRdf.dll

Syntax

public sealed class SparqlResult : ISparqlResult, IEnumerable<KeyValuePair<string, INode>>, IEnumerable, IEquatable<ISparqlResult>

Constructors

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SparqlResult()

Creates a new empty SPARQL Result which can only be filled by methods internal to the dotNetRDF Library.

Declaration

public SparqlResult()

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SparqlResult(IEnumerable<KeyValuePair<string, INode>>)

Creates a new SPARQL Result with the specified set of result bindings.

Declaration

public SparqlResult(IEnumerable<KeyValuePair<string, INode>> bindings)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<T><KeyValuePair<string, INode>>	bindings	An enumeration of key-value pairs that bind a variable name to a node value.

Properties

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Count

Gets the number of Variables for which this Result contains Bindings.

Declaration

public int Count { get; }

Property Value

Type	Description
int

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IsGroundResult

Gets whether a Result is a Ground Result.

Declaration

public bool IsGroundResult { get; }

Property Value

Type	Description
System.Boolean

Remarks

A Ground Result is a result which is considered to be a fixed fact. In practise this means it contains no Blank Nodes.

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this[int]

Gets the Value that is bound at the given Index.

Declaration

public INode this[int index] { get; }

Parameters

Type	Name	Description
int	index	Index whose Value you wish to retrieve.

Property Value

Type	Description
INode

Remarks

As of 1.0.0 the order of variables in a result may/may not vary depending on the original query. If a specific variable list was declared dotNetRDF tries to preserve that order but this may not always happen depending on how results are received.

Exceptions

Type	Condition
System.IndexOutOfRangeException	Thrown if there is nothing bound at the given Index.

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this[string]

Gets the Value that is bound to the given Variable.

Declaration

public INode this[string variable] { get; }

Parameters

Type	Name	Description
string	variable	Variable whose Value you wish to retrieve.

Property Value

Type	Description
INode

Exceptions

Type	Condition
RdfException	Thrown if there is nothing bound to the given Variable Name for this Result.

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Variables

Gets the set of Variables that are bound in this Result.

Declaration

public IEnumerable<string> Variables { get; }

Property Value

Type	Description
System.Collections.Generic.IEnumerable<T><string>

Methods

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Equals(object)

Override of the Equals method for Results.

Declaration

public override bool Equals(object obj)

Parameters

Type	Name	Description
System.Object	obj

Returns

Type	Description
System.Boolean

Overrides

object.Equals(object)

Remarks

Used implicitly in applying Distinct and Reduced modifiers to the Result Set.

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Equals(ISparqlResult)

Declaration

public bool Equals(ISparqlResult other)

Parameters

Type	Name	Description
ISparqlResult	other

Returns

Type	Description
System.Boolean

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GetEnumerator()

Enumerates the Bindings of Variable Names to Values in this Result.

Declaration

public IEnumerator<KeyValuePair<string, INode>> GetEnumerator()

Returns

Type	Description
System.Collections.Generic.IEnumerator<T><KeyValuePair<string, INode>>

Remarks

Does not respect the ordering of the variables (if any).

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GetHashCode()

Override of the GetHashCode method for Results.

Declaration

public override int GetHashCode()

Returns

Type	Description
int

Overrides

object.GetHashCode()

Remarks

Used implicitly in applying Distinct and Reduced modifiers to the Result Set.

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HasBoundValue(string)

Checks whether a given Variable has a non-null value for this result.

Declaration

public bool HasBoundValue(string variable)

Parameters

Type	Name	Description
string	variable	Variable Name.

Returns

Type	Description
System.Boolean	True if the variable is present and has a non-null value, false otherwise.

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HasValue(string)

Checks whether a given Variable has a value (which may be null) for this result.

Declaration

public bool HasValue(string variable)

Parameters

Type	Name	Description
string	variable	Variable Name.

Returns

Type	Description
System.Boolean	True if the variable is present, false otherwise.

Remarks

Returns true even if the value is null, use HasBoundValue(string) instead to see whether a non-null value is present for a variable.

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SetValue(string, INode)

Internal Only Method for setting the Value of a Result.

Declaration

public void SetValue(string variable, INode value)

Parameters

Type	Name	Description
string	variable	Variable Name.
INode	value	Value bound to the Variable.

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ToString()

Displays the Result as a comma separated string of pairs of the form ?var = value.

Declaration

public override string ToString()

Returns

Type	Description
string

Overrides

object.ToString()

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ToString(INodeFormatter)

Displays the Result as a comma separated string of paris of the form ?var = value where values are formatted using the given Node Formatter.

Declaration

public string ToString(INodeFormatter formatter)

Parameters

Type	Name	Description
INodeFormatter	formatter	Node Formatter.

Returns

Type	Description
string

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Trim()

Removes all Variables Bindings where the Variable is Unbound.

Declaration

public void Trim()

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TryGetBoundValue(string, out INode)

Tries to get a non-null value for the variable.

Declaration

public bool TryGetBoundValue(string variable, out INode value)

Parameters

Type	Name	Description
string	variable	Variable.
INode	value	Value.

Returns

Type	Description
System.Boolean	True if the variable was present and bound, false otherwise.

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TryGetValue(string, out INode)

Tries to get a value (which may be null) for the variable.

Declaration

public bool TryGetValue(string variable, out INode value)

Parameters

Type	Name	Description
string	variable	Variable.
INode	value	Value.

Returns

Type	Description
System.Boolean	True if the variable was present (even it was unbound) and false otherwise.

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Value(string)

Gets the Value that is bound to the given Variable.

Declaration

public INode Value(string variable)

Parameters

Type	Name	Description
string	variable	Variable whose Value you wish to retrieve.

Returns

Type	Description
INode

Exceptions

Type	Condition
RdfException	Thrown if there is nothing bound to the given Variable Name for this Result.

Implements

ISparqlResult

System.Collections.Generic.IEnumerable<T>

System.Collections.IEnumerable

System.IEquatable<T>

Extension Methods

Extensions.ChunkBy<T>(IEnumerable<T>, int)

Extensions.IsDisjoint<T>(IEnumerable<T>, IEnumerable<T>)

Extensions.ToSafeString(object)

DynamicExtensions.AsDynamic(ISparqlResult)

Extensions.AsEnumerable<T>(T)