Class ArqFunctionFactory

Expression Factory which generates ARQ Function expressions.

Inheritance

System.Object

ArqFunctionFactory

Implements

ISparqlCustomExpressionFactory

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: VDS.RDF.Query.Expressions

Assembly: dotNetRdf.dll

Syntax

public class ArqFunctionFactory : ISparqlCustomExpressionFactory

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

Fields

ArqFunctionsNamespace

ARQ Function Namespace.

Declaration

public const string ArqFunctionsNamespace = "http://jena.hpl.hp.com/ARQ/function#"

Field Value

Type	Description
string

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

BNode

Constants for ARQ Graph functions.

Declaration

public const string BNode = "bnode"

Field Value

Type	Description
string

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

E

Constants for ARQ Numeric functions.

Declaration

public const string E = "e"

Field Value

Type	Description
string

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

LocalName

Constants for ARQ Graph functions.

Declaration

public const string LocalName = "localname"

Field Value

Type	Description
string

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

Max

Constants for ARQ Numeric functions.

Declaration

public const string Max = "max"

Field Value

Type	Description
string

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

Min

Constants for ARQ Numeric functions.

Declaration

public const string Min = "min"

Field Value

Type	Description
string

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

Namespace

Constants for ARQ Graph functions.

Declaration

public const string Namespace = "namespace"

Field Value

Type	Description
string

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

Now

Constants for ARQ Miscellaneous functions.

Declaration

public const string Now = "now"

Field Value

Type	Description
string

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

Pi

Constants for ARQ Numeric functions.

Declaration

public const string Pi = "pi"

Field Value

Type	Description
string

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

Sha1Sum

Constants for ARQ Miscellaneous functions.

Declaration

public const string Sha1Sum = "sha1sum"

Field Value

Type	Description
string

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

StrJoin

Constants for ARQ String functions.

Declaration

public const string StrJoin = "strjoin"

Field Value

Type	Description
string

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

Substr

Constants for ARQ String functions.

Declaration

public const string Substr = "substr"

Field Value

Type	Description
string

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

Substring

Constants for ARQ String functions.

Declaration

public const string Substring = "substring"

Field Value

Type	Description
string

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

Properties

AvailableExtensionAggregates

Gets the Extension Aggregate URIs supported by this Factory.

Declaration

public IEnumerable<Uri> AvailableExtensionAggregates { get; }

Property Value

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

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

AvailableExtensionFunctions

Gets the Extension Function URIs supported by this Factory.

Declaration

public IEnumerable<Uri> AvailableExtensionFunctions { get; }

Property Value

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

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

Methods

TryCreateExpression(Uri, List<ISparqlExpression>, Dictionary<string, ISparqlExpression>, out ISparqlExpression)

Tries to create an ARQ Function expression if the function Uri correseponds to a supported ARQ Function.

Declaration

public bool TryCreateExpression(Uri u, List<ISparqlExpression> args, Dictionary<string, ISparqlExpression> scalarArgs, out ISparqlExpression expr)

Parameters

Type	Name	Description
System.Uri	u	Function Uri.
System.Collections.Generic.List<T><ISparqlExpression>	args	Function Arguments.
System.Collections.Generic.Dictionary<TKey, TValue><string, ISparqlExpression>	scalarArgs	Scalar Arguments.
ISparqlExpression	expr	Generated Expression.

Returns

Type	Description
System.Boolean	Whether an expression was successfully generated.

Remarks

Designed to help provide feature parity with the ARQ query engine contained in Jena.

Implements

ISparqlCustomExpressionFactory

Extension Methods

Extensions.ToSafeString(object)

Extensions.AsEnumerable<T>(T)