Class RemoteQueryProcessor

A SPARQL Query Processor where the query is processed by passing it to a remote SPARQL endpoint.

Inheritance

object

RemoteQueryProcessor

Implements

ISparqlQueryProcessor

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 class RemoteQueryProcessor : ISparqlQueryProcessor

Constructors

RemoteQueryProcessor(ISparqlQueryClient)

Create a new Remote Query Processor.

Declaration

public RemoteQueryProcessor(ISparqlQueryClient client)

Parameters

Type	Name	Description
ISparqlQueryClient	client	The remote SPARQL client to use.

RemoteQueryProcessor(SparqlRemoteEndpoint)

Creates a new Remote Query Processor.

Declaration

[Obsolete("This constructor is obsolete and will be removed in a future version. Use the constructor that accepts a SparqlClient")]
public RemoteQueryProcessor(SparqlRemoteEndpoint endpoint)

Parameters

Type	Name	Description
SparqlRemoteEndpoint	endpoint	SPARQL Endpoint.

Methods

ProcessQuery(IRdfHandler, ISparqlResultsHandler, SparqlQuery)

Processes a SPARQL Query passing the results to the RDF or Results handler as appropriate.

Declaration

public 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)

Processes a SPARQL Query.

Declaration

public object ProcessQuery(SparqlQuery query)

Parameters

Type	Name	Description
SparqlQuery	query	SPARQL Query.

Returns

Type	Description
object

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.

ProcessQueryAsync(IRdfHandler, ISparqlResultsHandler, SparqlQuery)

Process a SPARQL query asynchronously, passing the results to teh relevant handler.

Declaration

public Task ProcessQueryAsync(IRdfHandler rdfHandler, ISparqlResultsHandler resultsHandler, SparqlQuery query)

Parameters

Type	Name	Description
IRdfHandler	rdfHandler	RDF handler invoked for queries that return RDF graphs.
ISparqlResultsHandler	resultsHandler	Results handler invoked for queries that return SPARQL results sets.
SparqlQuery	query	SPARQL query.

Returns

Type	Description
Task

ProcessQueryAsync(SparqlQuery)

Process a SPARQL query asynchronously returning either a SparqlResultSet or a IGraph depending on the type of the query.

Declaration

public Task<object> ProcessQueryAsync(SparqlQuery query)

Parameters

Type	Name	Description
SparqlQuery	query	SPARQL query.

Returns

Type	Description
Task<object>	Either an <see cref="IGraph">IGraph</see> instance of a <see cref="SparqlResultSet">SparqlResultSet</see> depending on the type of the query.

Implements

ISparqlQueryProcessor

Extension Methods

Extensions.ToSafeString(object)

Extensions.AsEnumerable<T>(T)