ReadWriteSparqlConnector Class

Class for connecting to any SPARQL server that provides both a query and update endpoint.

Inheritance Hierarchy

SystemObject
VDS.RDF.StorageSparqlConnector
VDS.RDF.StorageReadWriteSparqlConnector

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

Syntax

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public class ReadWriteSparqlConnector : SparqlConnector, 
	IUpdateableStorage, IQueryableStorage, IStorageProvider, IStorageCapabilities, IDisposable

Public Class ReadWriteSparqlConnector
	Inherits SparqlConnector
	Implements IUpdateableStorage, IQueryableStorage, IStorageProvider, IStorageCapabilities, 
	IDisposable

The ReadWriteSparqlConnector type exposes the following members.

Constructors

	Name	Description
	ReadWriteSparqlConnector(Uri, Uri)	Creates a new connection.
	ReadWriteSparqlConnector(SparqlRemoteEndpoint, SparqlRemoteUpdateEndpoint)	Creates a new connection.
	ReadWriteSparqlConnector(Uri, Uri, SparqlConnectorLoadMethod)	Creates a new connection.
	ReadWriteSparqlConnector(SparqlRemoteEndpoint, SparqlRemoteUpdateEndpoint, SparqlConnectorLoadMethod)	Creates a new connection.

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Properties

	Name	Description
	DeleteSupported	Gets that deleting graphs is supported. (Overrides SparqlConnectorDeleteSupported.)
	Endpoint	Gets the underlying SparqlRemoteEndpoint which this class is a wrapper around. (Inherited from SparqlConnector.)
	IOBehaviour	Gets the IO behaviour for the store. (Overrides SparqlConnectorIOBehaviour.)
	IsReadOnly	Gets that the store is not read-only. (Overrides SparqlConnectorIsReadOnly.)
	IsReady	Returns that the Connection is ready. (Inherited from SparqlConnector.)
	ListGraphsSupported	Returns that listing graphs is supported. (Inherited from SparqlConnector.)
	ParentServer	Gets the parent server (if any). (Inherited from SparqlConnector.)
	SkipLocalParsing	Controls whether the Query will be parsed locally to accurately determine its Query Type for processing the response. (Inherited from SparqlConnector.)
	Timeout	Gets/Sets the HTTP Timeout in milliseconds used for communicating with the SPARQL Endpoint. (Overrides SparqlConnectorTimeout.)
	UpdateEndpoint	Gets the underlying SparqlRemoteUpdateEndpoint which this class is a wrapper around.
	UpdateSupported	Gets that triple level updates are supported, see the remarks section of the ReadWriteSparqlConnector for exactly what is and isn't supported. (Overrides SparqlConnectorUpdateSupported.)

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Methods

	Name	Description
	DeleteGraph(String)	Deletes a graph from the store. (Overrides SparqlConnectorDeleteGraph(String).)
	DeleteGraph(Uri)	Deletes a graph from the store. (Overrides SparqlConnectorDeleteGraph(Uri).)
	Dispose	Disposes of the Connection. (Inherited from SparqlConnector.)
	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.)
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	ListGraphs	Lists the Graphs in the Store. (Inherited from SparqlConnector.)
	LoadGraph(IGraph, String)	Loads a Graph from the SPARQL Endpoint. (Inherited from SparqlConnector.)
	LoadGraph(IGraph, Uri)	Loads a Graph from the SPARQL Endpoint. (Inherited from SparqlConnector.)
	LoadGraph(IRdfHandler, String)	Loads a Graph from the SPARQL Endpoint. (Inherited from SparqlConnector.)
	LoadGraph(IRdfHandler, Uri)	Loads a Graph from the SPARQL Endpoint. (Inherited from SparqlConnector.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	Query(String)	Makes a Query against the SPARQL Endpoint. (Inherited from SparqlConnector.)
	Query(IRdfHandler, ISparqlResultsHandler, String)	Makes a Query against the SPARQL Endpoint processing the results with an appropriate handler from those provided. (Inherited from SparqlConnector.)
	SaveGraph	Saves a graph to the store. (Overrides SparqlConnectorSaveGraph(IGraph).)
	SerializeConfiguration	Serializes the connection's configuration. (Overrides SparqlConnectorSerializeConfiguration(ConfigurationSerializationContext).)
	ToString	Gets a String which gives details of the Connection. (Overrides SparqlConnectorToString.)
	Update	Makes a SPARQL Update against the store.
	UpdateGraph(String, IEnumerableTriple, IEnumerableTriple)	Updates a graph in the store. (Overrides SparqlConnectorUpdateGraph(String, IEnumerableTriple, IEnumerableTriple).)
	UpdateGraph(Uri, IEnumerableTriple, IEnumerableTriple)	Updates a graph in the store. (Overrides SparqlConnectorUpdateGraph(Uri, IEnumerableTriple, IEnumerableTriple).)

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Fields

	Name	Description
	_endpoint	Underlying SPARQL query endpoint. (Inherited from SparqlConnector.)
	_mode	Method for loading graphs. (Inherited from SparqlConnector.)
	_skipLocalParsing	Whether to skip local parsing. (Inherited from SparqlConnector.)
	_timeout	Timeout for endpoints. (Inherited from SparqlConnector.)

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Remarks

This class is a wrapper around a SparqlRemoteEndpoint and a SparqlRemoteUpdateEndpoint. The former is used for the query functionality while the latter is used for the update functionality. As updates happen via SPARQL the behaviour with respects to adding and removing blank nodes will be somewhat up to the underlying SPARQL implementation. This connector is not able to carry out UpdateGraph(Uri, IEnumerableTriple, IEnumerableTriple) operations which attempt to delete blank nodes and cannot guarantee that added blank nodes bear any relation to existing blank nodes in the store.

Unlike other HTTP based connectors this connector does not derive from BaseHttpConnector - if you need to specify proxy information you should do so on the SPARQL Endpoint you are wrapping either by providing endpoint instance pre-configured with the proxy settings or by accessing the endpoint via the Endpoint and UpdateEndpoint properties and programmatically adding the settings.

Reference

VDS.RDF.Storage Namespace