Class GroupByExpression

Represents a Grouping on a given Expression.
Inheritance
System.Object
BaseGroupBy
GroupByExpression
Implements
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.Grouping
Assembly: dotNetRDF.dll
Syntax
public class GroupByExpression : BaseGroupBy, ISparqlGroupBy

Constructors

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GroupByExpression(ISparqlExpression)

Creates a new Group By which groups by a given Expression.
Declaration
public GroupByExpression(ISparqlExpression expr)
Parameters
Type Name Description
ISparqlExpression expr Expression.

Properties

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Expression

Gets the Expression used to GROUP BY.
Declaration
public override ISparqlExpression Expression { get; }
Property Value
Type Description
ISparqlExpression
Overrides
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ProjectableVariables

Gets the Projectable Variables used in the GROUP BY i.e. Variables that are grouped upon and Assigned Variables.
Declaration
public override IEnumerable<string> ProjectableVariables { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<System.String>
Overrides
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Variables

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

Methods

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Apply(SparqlEvaluationContext)

Applies a Grouping on a given Expression to the Binder.
Declaration
public override List<BindingGroup> Apply(SparqlEvaluationContext context)
Parameters
Type Name Description
SparqlEvaluationContext context Evaluation Context.
Returns
Type Description
System.Collections.Generic.List<BindingGroup>
Overrides
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Apply(SparqlEvaluationContext, List<BindingGroup>)

Applies a Grouping on a given Variable to the Binder Groups from a previous Grouping.
Declaration
public override List<BindingGroup> Apply(SparqlEvaluationContext context, List<BindingGroup> groups)
Parameters
Type Name Description
SparqlEvaluationContext context Evaluation Context.
System.Collections.Generic.List<BindingGroup> groups Binder Group to subgroup.
Returns
Type Description
System.Collections.Generic.List<BindingGroup>
Overrides
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ToString()

Gets the String representation of the GROUP BY.
Declaration
public override string ToString()
Returns
Type Description
System.String
Overrides
System.Object.ToString()

Implements

Extension Methods