LazyUnion Class

Represents a Union.

Inheritance Hierarchy

SystemObject
VDS.RDF.Query.AlgebraLazyUnion

Namespace: VDS.RDF.Query.Algebra
Assembly: dotNetRDF (in dotNetRDF.dll) Version:

Syntax

public class LazyUnion : IUnion, IAbstractJoin, 
	ISparqlAlgebra

Public Class LazyUnion
	Implements IUnion, IAbstractJoin, ISparqlAlgebra

The LazyUnion type exposes the following members.

Constructors

	Name	Description
	LazyUnion(ISparqlAlgebra, ISparqlAlgebra)	Creates a new Lazy Union.
	LazyUnion(ISparqlAlgebra, ISparqlAlgebra, Int32)	Creates a new Lazy Union.

Properties

	Name	Description
	FixedVariables	Gets the enumeration of fixed variables in the algebra i.e. variables that are guaranteed to have a bound value.
	FloatingVariables	Gets the enumeration of floating variables in the algebra i.e. variables that are not guaranteed to have a bound value.
	Lhs	Gets the LHS of the Join.
	Rhs	Gets the RHS of the Join.
	Variables	Gets the Variables used in the Algebra.

Methods

	Name	Description
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Evaluate	Evaluates the Lazy Union.
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ToGraphPattern	Converts the Union back to Graph Patterns.
	ToQuery	Converts the Algebra back to a SPARQL Query.
	ToString	Gets the String representation of the Algebra. (Overrides ObjectToString.)
	Transform	Transforms both sides of the Join using the given Optimiser.
	TransformLhs	Transforms the LHS of the Join using the given Optimiser.
	TransformRhs	Transforms the RHS of the Join using the given Optimiser.

Remarks

A Lazy Union differs from a standard Union in that if it finds sufficient solutions on the LHS it has no need to evaluate the RHS.