Class BaseAggregate

Abstract Base Class for Aggregate Functions.
Inheritance
System.Object
BaseAggregate
AllAggregate
AnyAggregate
MedianAggregate
ModeAggregate
NoneAggregate
NumericMaxAggregate
NumericMinAggregate
AverageAggregate
CountAggregate
CountAllAggregate
CountAllDistinctAggregate
CountDistinctAggregate
MaxAggregate
MinAggregate
SampleAggregate
SumAggregate
StringJoinAggregate
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.Aggregates
Assembly: dotNetRDF.dll
Syntax
public abstract class BaseAggregate : ISparqlAggregate

Constructors

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BaseAggregate(ISparqlExpression)

Base Constructor for Aggregates.
Declaration
public BaseAggregate(ISparqlExpression expr)
Parameters
Type Name Description
ISparqlExpression expr Expression that the aggregate is over.
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BaseAggregate(ISparqlExpression, Boolean)

Base Constructor for Aggregates.
Declaration
public BaseAggregate(ISparqlExpression expr, bool distinct)
Parameters
Type Name Description
ISparqlExpression expr Expression that the aggregate is over.
System.Boolean distinct Whether a Distinct modifer is applied.

Fields

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_distinct

Whether a DISTINCT modifer is applied.
Declaration
protected bool _distinct
Field Value
Type Description
System.Boolean
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_expr

Expression that the aggregate operates over.
Declaration
protected ISparqlExpression _expr
Field Value
Type Description
ISparqlExpression

Properties

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Arguments

Gets the Arguments of the Expression.
Declaration
public virtual IEnumerable<ISparqlExpression> Arguments { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<ISparqlExpression>
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Expression

Expression that the Aggregate executes over.
Declaration
public ISparqlExpression Expression { get; }
Property Value
Type Description
ISparqlExpression
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Functor

Gets the Functor of the Aggregate.
Declaration
public abstract string Functor { get; }
Property Value
Type Description
System.String
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Type

Gets the Type of the Expression.
Declaration
public SparqlExpressionType Type { get; }
Property Value
Type Description
SparqlExpressionType

Methods

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Apply(SparqlEvaluationContext)

Applies the Aggregate to the Result Binder.
Declaration
public IValuedNode Apply(SparqlEvaluationContext context)
Parameters
Type Name Description
SparqlEvaluationContext context Evaluation Context.
Returns
Type Description
IValuedNode
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Apply(SparqlEvaluationContext, IEnumerable<Int32>)

Applies the Aggregate to the Result Binder.
Declaration
public abstract IValuedNode Apply(SparqlEvaluationContext context, IEnumerable<int> bindingIDs)
Parameters
Type Name Description
SparqlEvaluationContext context Evaluation Context.
System.Collections.Generic.IEnumerable<System.Int32> bindingIDs Enumerable of Binding IDs over which the Aggregate applies.
Returns
Type Description
IValuedNode
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ToString()

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

Implements

Extension Methods