Class AskUnion

Represents a Union.

Inheritance
System.Object
Union
AskUnion
Implements
Inherited Members
object.Equals(object)
object.Equals(object, object)
object.GetHashCode()
object.GetType()
object.MemberwiseClone()
object.ReferenceEquals(object, object)
Namespace: VDS.RDF.Query.Algebra
Assembly: dotNetRdf.dll
Syntax
public class AskUnion : Union, IUnion, IAbstractJoin, ISparqlAlgebra, IVisitable, IProcessable
Remarks

An Ask Union differs from a standard Union in that if it finds a solution on the LHS it has no need to evaluate the RHS.

Constructors

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AskUnion(ISparqlAlgebra, ISparqlAlgebra)

Creates a new Ask Union.

Declaration
public AskUnion(ISparqlAlgebra lhs, ISparqlAlgebra rhs)
Parameters
Type Name Description
ISparqlAlgebra lhs

LHS Pattern.
ISparqlAlgebra rhs

RHS Pattern.
Remarks

An Ask Union differs from a standard Union in that if it finds a solution on the LHS it has no need to evaluate the RHS.

Methods

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ToString()

Gets the String representation of the Algebra.

Declaration
public override string ToString()
Returns
Type Description
string
Overrides
Remarks

An Ask Union differs from a standard Union in that if it finds a solution on the LHS it has no need to evaluate the RHS.

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Transform(IAlgebraOptimiser)

Transforms both sides of the Join using the given Optimiser.

Declaration
public override ISparqlAlgebra Transform(IAlgebraOptimiser optimiser)
Parameters
Type Name Description
IAlgebraOptimiser optimiser

Optimser.
Returns
Type Description
ISparqlAlgebra
Overrides
Remarks

An Ask Union differs from a standard Union in that if it finds a solution on the LHS it has no need to evaluate the RHS.

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TransformLhs(IAlgebraOptimiser)

Transforms the LHS of the Join using the given Optimiser.

Declaration
public override ISparqlAlgebra TransformLhs(IAlgebraOptimiser optimiser)
Parameters
Type Name Description
IAlgebraOptimiser optimiser

Optimser.
Returns
Type Description
ISparqlAlgebra
Overrides
Remarks

An Ask Union differs from a standard Union in that if it finds a solution on the LHS it has no need to evaluate the RHS.

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TransformRhs(IAlgebraOptimiser)

Transforms the RHS of the Join using the given Optimiser.

Declaration
public override ISparqlAlgebra TransformRhs(IAlgebraOptimiser optimiser)
Parameters
Type Name Description
IAlgebraOptimiser optimiser

Optimser.
Returns
Type Description
ISparqlAlgebra
Overrides
Remarks

An Ask Union differs from a standard Union in that if it finds a solution on the LHS it has no need to evaluate the RHS.

Implements

Extension Methods