LeviathanQueryProcessor Class

Default SPARQL Query Processor provided by the library's Leviathan SPARQL Engine.

Inheritance Hierarchy

SystemObject
VDS.RDF.QueryLeviathanQueryProcessor
VDS.RDF.QueryExplainQueryProcessor

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

Syntax

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public class LeviathanQueryProcessor : ISparqlQueryProcessor, 
	ISparqlQueryAlgebraProcessor<BaseMultiset, SparqlEvaluationContext>

Public Class LeviathanQueryProcessor
	Implements ISparqlQueryProcessor, ISparqlQueryAlgebraProcessor(Of BaseMultiset, SparqlEvaluationContext)

The LeviathanQueryProcessor type exposes the following members.

Constructors

	Name	Description
	LeviathanQueryProcessor(IInMemoryQueryableStore)	Creates a new Leviathan Query Processor.
	LeviathanQueryProcessor(ISparqlDataset)	Creates a new Leviathan Query Processor.

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Methods

	Name	Description
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetContext	Creates a new Evaluation Context.
	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.)
	ProcessAlgebra	Processes SPARQL Algebra.
	ProcessAsk	Processes an Ask.
	ProcessBgp	Processes a BGP.
	ProcessBindings	Processes a Bindings modifier.
	ProcessDistinct	Processes a Distinct modifier.
	ProcessExistsJoin	Processes an Exists Join.
	ProcessExtend	Processes an Extend.
	ProcessFilter	Processes a Filter.
	ProcessGraph	Processes a Graph.
	ProcessGroupBy	Processes a Group By.
	ProcessHaving	Processes a Having.
	ProcessJoin	Processes a Join.
	ProcessLeftJoin	Processes a LeftJoin.
	ProcessMinus	Processes a Minus.
	ProcessNegatedPropertySet	Processes a Negated Property Set.
	ProcessNullOperator	Processes a Null Operator.
	ProcessOneOrMorePath	Processes a One or More Path.
	ProcessOrderBy	Processes an Order By.
	ProcessPropertyPath	Processes a Property Path.
	ProcessQuery(SparqlQuery)	Processes a SPARQL Query.
	ProcessQuery(IRdfHandler, ISparqlResultsHandler, SparqlQuery)	Processes a SPARQL Query sending the results to a RDF/SPARQL Results handler as appropriate.
	ProcessQuery(SparqlQuery, GraphCallback, SparqlResultsCallback, Object)	Processes a SPARQL Query asynchronously invoking the relevant callback when the query completes.
	ProcessQuery(IRdfHandler, ISparqlResultsHandler, SparqlQuery, QueryCallback, Object)	Processes a SPARQL Query asynchronously passing the results to the relevant handler and invoking the callback when the query completes.
	ProcessReduced	Processes a Reduced modifier.
	ProcessSelect	Processes a Select.
	ProcessSelectDistinctGraphs	Processes a Select Distinct Graphs.
	ProcessService	Processes a Service.
	ProcessSlice	Processes a Slice modifier.
	ProcessSubQuery	Processes a Subquery.
	ProcessUnion	Processes a Union.
	ProcessUnknownOperator	Processes a Unknown Operator.
	ProcessZeroLengthPath	Processes a Zero Length Path.
	ProcessZeroOrMorePath	Processes a Zero or More Path.
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Remarks

The Leviathan Query Processor simply invokes the Evaluate method of the SPARQL Algebra it is asked to process.

In future releases much of the Leviathan Query engine logic will be moved into this class to make it possible for implementors to override specific bits of the algebra processing but this is not possible at this time.

Reference

VDS.RDF.Query Namespace