Class OrderByExpression

An ORDER BY which orders based on the values of a Sparql Expression.
Inheritance
System.Object
BaseOrderBy
OrderByExpression
Implements
System.Collections.Generic.IComparer<ISet>
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
Namespace: VDS.RDF.Query.Ordering
Assembly: dotNetRDF.dll
Syntax
public class OrderByExpression : BaseOrderBy, ISparqlOrderBy, IComparer<ISet>

Constructors

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OrderByExpression(ISparqlExpression)

Creates a new Order By using the given Expression.
Declaration
public OrderByExpression(ISparqlExpression expr)
Parameters
Type Name Description
ISparqlExpression expr Expression to order by.

Properties

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Expression

Gets the Expression used for Ordering.
Declaration
public override ISparqlExpression Expression { get; }
Property Value
Type Description
ISparqlExpression
Overrides
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IsSimple

Gets whether the Ordering is Simple.
Declaration
public override bool IsSimple { get; }
Property Value
Type Description
System.Boolean
Overrides
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Variables

Gets all the Variables used in the Ordering.
Declaration
public override IEnumerable<string> Variables { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<System.String>
Overrides

Methods

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Compare(ISet, ISet)

Orders the sets based on the values resulting from evaluating the expression for both solutions.
Declaration
public override int Compare(ISet x, ISet y)
Parameters
Type Name Description
ISet x A Set.
ISet y A Set.
Returns
Type Description
System.Int32
Overrides
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GetComparer(IMatchTriplePattern)

Generates a Comparer than can be used to do Ordering based on the given Triple Pattern.
Declaration
public override IComparer<Triple> GetComparer(IMatchTriplePattern pattern)
Parameters
Type Name Description
IMatchTriplePattern pattern Triple Pattern.
Returns
Type Description
System.Collections.Generic.IComparer<Triple>
Overrides
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ToString()

Gets the String representation of the Order By.
Declaration
public override string ToString()
Returns
Type Description
System.String
Overrides

Implements

System.Collections.Generic.IComparer<T>

Extension Methods