UnknownFunction Class |
Represents an Unknown Function that is not supported by dotNetRDF.
Inheritance HierarchyNamespace: VDS.RDF.Query.Expressions.Functions
Assembly: dotNetRDF (in dotNetRDF.dll) Version:
SyntaxThe UnknownFunction type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | UnknownFunction(Uri) |
Creates a new Unknown Function that has no Arguments.
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| UnknownFunction(Uri, IEnumerableISparqlExpression) |
Creates a new Unknown Function that has multiple Arguments.
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| UnknownFunction(Uri, ISparqlExpression) |
Creates a new Unknown Function that has a Single Argument.
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Properties| Name | Description | |
|---|---|---|
 | Arguments |
Gets the Arguments of the Expression.
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| CanParallelise |
Gets whether an expression can safely be evaluated in parallel.
|
| Functor |
Gets the Function URI of the Expression.
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| Type |
Gets the Expression Type.
|
| Variables |
Gets the Variables used in the Function.
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Methods| Name | Description | |
|---|---|---|
| Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
| Evaluate |
Gives null as the Value since dotNetRDF does not know how to evaluate Unknown Functions.
|
 | 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.) |
| ToString |
Gets the String representation of the Expression.
(Overrides ObjectToString.) |
| Transform |
Transforms the Expression using the given Transformer.
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RemarksThis exists as a placeholder class so users may choose to parse Unknown Functions and have them appear in queries even if they cannot be evaluated. This is useful when you wish to parse a query locally to check syntactic validity before passing it to an external query processor which may understand how to evaluate the function. Using this placeholder also allows queries containing Unknown Functions to still be formatted properly.
See Also