Class SparqlResult

Class for representing a Row of a Sparql Result Set.
Inheritance
System.Object
SparqlResult
Implements
System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<System.String, INode>>
System.Collections.IEnumerable
System.Runtime.Serialization.ISerializable
System.Xml.Serialization.IXmlSerializable
Inherited Members
System.Object.Equals(System.Object, System.Object)
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
Namespace: VDS.RDF.Query
Assembly: dotNetRDF.dll
Syntax
[Serializable]
public sealed class SparqlResult : IEnumerable<KeyValuePair<string, INode>>, IEnumerable, ISerializable, IXmlSerializable

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(ISet)

Creates a new SPARQL Result from the given Set.
Declaration
public SparqlResult(ISet s)
Parameters
Type Name Description
ISet s Set.
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SparqlResult(ISet, IEnumerable<String>)

Creates a new SPARQL Result from the given Set which contains only the given variables in the given order.
Declaration
public SparqlResult(ISet s, IEnumerable<string> variables)
Parameters
Type Name Description
ISet s Set.
System.Collections.Generic.IEnumerable<System.String> variables Variables.

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
System.Int32
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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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Item[Int32]

Gets the Value that is bound at the given Index.
Declaration
public INode this[int index] { get; }
Parameters
Type Name Description
System.Int32 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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Item[String]

Gets the Value that is bound to the given Variable.
Declaration
public INode this[string variable] { get; }
Parameters
Type Name Description
System.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<System.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
System.Object.Equals(System.Object)
Remarks
Used implicitly in applying Distinct and Reduced modifiers to the Result Set.
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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<System.Collections.Generic.KeyValuePair<System.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
System.Int32
Overrides
System.Object.GetHashCode()
Remarks
Used implicitly in applying Distinct and Reduced modifiers to the Result Set.
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GetObjectData(SerializationInfo, StreamingContext)

Gets the data for serialization.
Declaration
public void GetObjectData(SerializationInfo info, StreamingContext context)
Parameters
Type Name Description
System.Runtime.Serialization.SerializationInfo info Serialization Information.
System.Runtime.Serialization.StreamingContext context Streaming Context.
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GetSchema()

Gets the schema for XML serialization.
Declaration
public XmlSchema GetSchema()
Returns
Type Description
System.Xml.Schema.XmlSchema
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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
System.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
System.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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ReadXml(XmlReader)

Reads the data for XML deserialization (.Net serialization not the official SPARQL results serialization).
Declaration
public void ReadXml(XmlReader reader)
Parameters
Type Name Description
System.Xml.XmlReader reader XML Reader.
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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
System.String
Overrides
System.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
System.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
System.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
System.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
System.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.
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WriteXml(XmlWriter)

Writes the data for XML serialization (.Net serialization not the official SPARQL results serialization).
Declaration
public void WriteXml(XmlWriter writer)
Parameters
Type Name Description
System.Xml.XmlWriter writer XML Writer.

Explicit Interface Implementations

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IEnumerable.GetEnumerator()

Enumerates the Bindings of Variable Names to Values in this Result.
Declaration
IEnumerator IEnumerable.GetEnumerator()
Returns
Type Description
System.Collections.IEnumerator

Implements

System.Collections.Generic.IEnumerable<T>
System.Collections.IEnumerable
System.Runtime.Serialization.ISerializable
System.Xml.Serialization.IXmlSerializable

Extension Methods