Ask Class |
Represents the Ask step of Query Evaluation.
Inheritance HierarchyNamespace: VDS.RDF.Query.Algebra
Assembly: dotNetRDF (in dotNetRDF.dll) Version:
SyntaxThe Ask type exposes the following members.
ConstructorsProperties| Name | Description | |
|---|---|---|
 | FixedVariables |
Gets the enumeration of fixed variables in the algebra i.e. variables that are guaranteed to have a bound value.
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| FloatingVariables |
Gets the enumeration of floating variables in the algebra i.e. variables that are not guaranteed to have a bound value.
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| InnerAlgebra |
Gets the Inner Algebra.
|
| Variables |
Gets the Variables used in the Algebra.
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Methods| Name | Description | |
|---|---|---|
 | Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
| Evaluate |
Evaluates the ASK by turning the Results of evaluating the Inner Pattern to either an Identity/Null Multiset depending on whether there were any Results.
|
 | 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 |
Throws an exception since an Ask() cannot be converted to a Graph Pattern.
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| ToQuery |
Converts the Algebra back to a SPARQL Query.
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| ToString |
Gets the String representation of the Ask.
(Overrides ObjectToString.) |
| Transform |
Transforms the Inner Algebra using the given Optimiser.
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Remarks
Used only for ASK queries. Turns the final Multiset into either an IdentityMultiset if the ASK succeeds or a NullMultiset if the ASK fails.
See Also