Class FusekiConnector

Class for connecting to any dataset that can be exposed via Fuseki.

Inheritance
object
BaseHttpConnector
BaseAsyncHttpConnector
SparqlHttpProtocolConnector
FusekiConnector
Implements
Inherited Members
Namespace: VDS.RDF.Storage
Assembly: dotNetRdf.Client.dll
Syntax
public class FusekiConnector : SparqlHttpProtocolConnector, IConfigurationSerializable, IAsyncUpdateableStorage, IAsyncQueryableStorage, IAsyncStorageProvider, IUpdateableStorage, IQueryableStorage, IStorageProvider, IStorageCapabilities, IDisposable
Remarks

Uses all three Services provided by a Fuseki instance - Query, Update and HTTP Update.

Constructors

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FusekiConnector(string, IWebProxy)

Creates a new connection to a Fuseki Server.

Declaration
public FusekiConnector(string serviceUri, IWebProxy proxy)
Parameters
Type Name Description
string serviceUri

The /data URI of the Fuseki Server.
IWebProxy proxy

Proxy Server.
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FusekiConnector(string, MimeTypeDefinition)

Creates a new connection to a Fuseki Server.

Declaration
public FusekiConnector(string serviceUri, MimeTypeDefinition writerMimeTypeDefinition = null)
Parameters
Type Name Description
string serviceUri

The /data URI of the Fuseki Server.
MimeTypeDefinition writerMimeTypeDefinition

The MIME type of the syntax to use when sending RDF data to the server. Defaults to RDF/XML.
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FusekiConnector(Uri, IWebProxy)

Creates a new connection to a Fuseki Server.

Declaration
public FusekiConnector(Uri serviceUri, IWebProxy proxy)
Parameters
Type Name Description
Uri serviceUri

The /data URI of the Fuseki Server.
IWebProxy proxy

Proxy Server.
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FusekiConnector(Uri, MimeTypeDefinition)

Creates a new connection to a Fuseki Server.

Declaration
public FusekiConnector(Uri serviceUri, MimeTypeDefinition writerMimeTypeDefinition = null)
Parameters
Type Name Description
Uri serviceUri

The /data URI of the Fuseki Server.
MimeTypeDefinition writerMimeTypeDefinition

The MIME type of the syntax to use when sending RDF data to the server. Defaults to RDF/XML.

Properties

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IOBehaviour

Gets the IO Behaviour of the Store.

Declaration
public override IOBehaviour IOBehaviour { get; }
Property Value
Type Description
IOBehaviour
Overrides
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ListGraphsSupported

Returns that Listing Graphs is supported.

Declaration
public override bool ListGraphsSupported { get; }
Property Value
Type Description
bool
Overrides
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UpdateSupported

Returns that Triple level updates are supported using Fuseki.

Declaration
public override bool UpdateSupported { get; }
Property Value
Type Description
bool
Overrides

Methods

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ListGraphNames()

Gets an enumeration of the names of the graphs in the store.

Declaration
public override IEnumerable<string> ListGraphNames()
Returns
Type Description
IEnumerable<string>
Overrides
Remarks

Implementations should implement this method only if they need to provide a custom way of listing Graphs. If the Store for which you are providing a manager can efficiently return the Graphs using a SELECT DISTINCT ?g WHERE { GRAPH ?g { ?s ?p ?o } } query then there should be no need to implement this function.

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ListGraphs()

Gets the List of Graphs from the store.

Declaration
[Obsolete("Replaced by ListGraphNames")]
public override IEnumerable<Uri> ListGraphs()
Returns
Type Description
IEnumerable<Uri>
Overrides
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ListGraphs(AsyncStorageCallback, object)

Lists the graph sin the Store asynchronously.

Declaration
[Obsolete("Replaced with ListGraphsAsync(CancellationToken)")]
public override void ListGraphs(AsyncStorageCallback callback, object state)
Parameters
Type Name Description
AsyncStorageCallback callback

Callback.
object state

State to pass to the callback.
Overrides
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ListGraphsAsync(CancellationToken)

List the names of the graph on the remote server asynchronously.

Declaration
public override Task<IEnumerable<string>> ListGraphsAsync(CancellationToken cancellationToken)
Parameters
Type Name Description
CancellationToken cancellationToken
Returns
Type Description
Task<IEnumerable<string>>

Task that returns the list of graph names.
Overrides
Remarks

This implementation uses a SPARQL query to list the names of the graphs in the store. Many stores support more efficient means of listing graphs and so this method SHOULD be overridden. If the store does not implement the IAsyncQueryableStorage interface, then this method MUST be overridden.

Exceptions
Type Condition
RdfStorageException

Raised if the store does not support the asynchronous SPARQL query required to retrieve a list of graph names.
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Query(string)

Executes a SPARQL Query on the Fuseki store.

Declaration
public object Query(string sparqlQuery)
Parameters
Type Name Description
string sparqlQuery

SPARQL Query.
Returns
Type Description
object
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Query(string, AsyncStorageCallback, object)

Makes a SPARQL Query against the underlying store.

Declaration
public void Query(string sparqlQuery, AsyncStorageCallback callback, object state)
Parameters
Type Name Description
string sparqlQuery

SPARQL Query.
AsyncStorageCallback callback

Callback.
object state

State to pass to the callback.
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Query(IRdfHandler, ISparqlResultsHandler, string)

Executes a SPARQL Query on the Fuseki store processing the results using an appropriate handler from those provided.

Declaration
public void Query(IRdfHandler rdfHandler, ISparqlResultsHandler resultsHandler, string sparqlQuery)
Parameters
Type Name Description
IRdfHandler rdfHandler

RDF Handler.
ISparqlResultsHandler resultsHandler

Results Handler.
string sparqlQuery

SPARQL Query.
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Query(IRdfHandler, ISparqlResultsHandler, string, AsyncStorageCallback, object)

Executes a SPARQL Query on the Fuseki store processing the results using an appropriate handler from those provided.

Declaration
public void Query(IRdfHandler rdfHandler, ISparqlResultsHandler resultsHandler, string sparqlQuery, AsyncStorageCallback callback, object state)
Parameters
Type Name Description
IRdfHandler rdfHandler

RDF Handler.
ISparqlResultsHandler resultsHandler

Results Handler.
string sparqlQuery

SPARQL Query.
AsyncStorageCallback callback

Callback.
object state

State to pass to the callback.
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QueryAsync(string, CancellationToken)

Queries the store asynchronously.

Declaration
public Task<object> QueryAsync(string sparqlQuery, CancellationToken cancellationToken)
Parameters
Type Name Description
string sparqlQuery

SPARQL Query.
CancellationToken cancellationToken
Returns
Type Description
Task<object>
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QueryAsync(IRdfHandler, ISparqlResultsHandler, string, CancellationToken)

Queries the store asynchronously.

Declaration
public Task QueryAsync(IRdfHandler rdfHandler, ISparqlResultsHandler resultsHandler, string sparqlQuery, CancellationToken cancellationToken)
Parameters
Type Name Description
IRdfHandler rdfHandler

RDF Handler that will receive graph results from CONSTRUCT or DESCRIBE queries.
ISparqlResultsHandler resultsHandler

SPARQL Results set handler that will receive results from ASK or SELECT queries.
string sparqlQuery

The SPARQL query to execute.
CancellationToken cancellationToken
Returns
Type Description
Task
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SerializeConfiguration(ConfigurationSerializationContext)

Serializes the connection's configuration.

Declaration
public override void SerializeConfiguration(ConfigurationSerializationContext context)
Parameters
Type Name Description
ConfigurationSerializationContext context

Configuration Serialization Context.
Overrides
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ToString()

Gets a String which gives details of the Connection.

Declaration
public override string ToString()
Returns
Type Description
string
Overrides
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Update(string)

Executes SPARQL Updates against the Fuseki store.

Declaration
public void Update(string sparqlUpdate)
Parameters
Type Name Description
string sparqlUpdate

SPARQL Update.
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Update(string, AsyncStorageCallback, object)

Executes SPARQL Updates against the Fuseki store.

Declaration
public void Update(string sparqlUpdate, AsyncStorageCallback callback, object state)
Parameters
Type Name Description
string sparqlUpdate

SPARQL Update.
AsyncStorageCallback callback

Callback.
object state

State to pass to the callback.
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UpdateAsync(string, CancellationToken)

Updates the store asynchronously.

Declaration
public Task UpdateAsync(string sparqlUpdates, CancellationToken cancellationToken)
Parameters
Type Name Description
string sparqlUpdates
CancellationToken cancellationToken
Returns
Type Description
Task
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UpdateGraph(string, IEnumerable<Triple>, IEnumerable<Triple>)

Updates a Graph in the Fuseki store.

Declaration
public override void UpdateGraph(string graphUri, IEnumerable<Triple> additions, IEnumerable<Triple> removals)
Parameters
Type Name Description
string graphUri

URI of the Graph to update.
IEnumerable<Triple> additions

Triples to be added.
IEnumerable<Triple> removals

Triples to be removed.
Overrides
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UpdateGraph(string, IEnumerable<Triple>, IEnumerable<Triple>, AsyncStorageCallback, object)

Updates a Graph on the Fuseki Server.

Declaration
public override void UpdateGraph(string graphUri, IEnumerable<Triple> additions, IEnumerable<Triple> removals, AsyncStorageCallback callback, object state)
Parameters
Type Name Description
string graphUri

URI of the Graph to update.
IEnumerable<Triple> additions

Triples to be added.
IEnumerable<Triple> removals

Triples to be removed.
AsyncStorageCallback callback

Callback.
object state

State to pass to the callback.
Overrides
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UpdateGraph(Uri, IEnumerable<Triple>, IEnumerable<Triple>)

Updates a Graph in the Fuseki store.

Declaration
public override void UpdateGraph(Uri graphUri, IEnumerable<Triple> additions, IEnumerable<Triple> removals)
Parameters
Type Name Description
Uri graphUri

URI of the Graph to update.
IEnumerable<Triple> additions

Triples to be added.
IEnumerable<Triple> removals

Triples to be removed.
Overrides
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UpdateGraphAsync(string, IEnumerable<Triple>, IEnumerable<Triple>, CancellationToken)

Updates a graph in the store asynchronously.

Declaration
public override Task UpdateGraphAsync(string graphUri, IEnumerable<Triple> additions, IEnumerable<Triple> removals, CancellationToken cancellationToken)
Parameters
Type Name Description
string graphUri
IEnumerable<Triple> additions

Triples to be added.
IEnumerable<Triple> removals

Triples to be removed.
CancellationToken cancellationToken
Returns
Type Description
Task
Overrides

Implements

Extension Methods