Class QueryProcessorBase

Provides a default implementation of the methods that allow a query processor to run asynchronously with a results callback.

Inheritance

object

QueryProcessorBase

GenericQueryProcessor

SimpleQueryProcessor

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: VDS.RDF.Query

Assembly: dotNetRdf.dll

Syntax

public abstract class QueryProcessorBase

Methods

ProcessQuery(IRdfHandler, ISparqlResultsHandler, SparqlQuery)

When overridden in a derived class, processes a SPARQL Query passing the results to the RDF or Results handler as appropriate.

Declaration

public abstract void ProcessQuery(IRdfHandler rdfHandler, ISparqlResultsHandler resultsHandler, SparqlQuery query)

Parameters

Type	Name	Description
IRdfHandler	rdfHandler	RDF Handler.
ISparqlResultsHandler	resultsHandler	Results Handler.
SparqlQuery	query	SPARQL Query.

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.

Declaration

public void ProcessQuery(IRdfHandler rdfHandler, ISparqlResultsHandler resultsHandler, SparqlQuery query, QueryCallback callback, object state)

Parameters

Type	Name	Description
IRdfHandler	rdfHandler	RDF Handler.
ISparqlResultsHandler	resultsHandler	Results Handler.
SparqlQuery	query	SPARQL Query.
QueryCallback	callback	Callback.
object	state	State to pass to the callback.

Remarks

In the event of a success the callback will be invoked, if there is an error the callback will be invoked and passed an instance of AsyncError which contains details of the error and the original state information passed in.

ProcessQuery(SparqlQuery, GraphCallback, SparqlResultsCallback, object)

Processes a SPARQL Query asynchronously invoking the relevant callback when the query completes.

Declaration

public void ProcessQuery(SparqlQuery query, GraphCallback rdfCallback, SparqlResultsCallback resultsCallback, object state)

Parameters

Type	Name	Description
SparqlQuery	query	SPARQL QUery.
GraphCallback	rdfCallback	Callback for queries that return a Graph.
SparqlResultsCallback	resultsCallback	Callback for queries that return a Result Set.
object	state	State to pass to the callback.

Remarks

In the event of a success the appropriate callback will be invoked, if there is an error both callbacks will be invoked and passed an instance of AsyncError which contains details of the error and the original state information passed in.

Extension Methods

Extensions.ToSafeString(object)

Extensions.AsEnumerable<T>(T)