Class ReadOnlyConnector

Provides a Read-Only wrapper that can be placed around another IStorageProvider instance.

Inheritance

object

ReadOnlyConnector

QueryableReadOnlyConnector

Implements

IStorageProvider

IStorageCapabilities

IDisposable

IConfigurationSerializable

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

Namespace: VDS.RDF.Storage

Assembly: dotNetRdf.dll

Syntax

public class ReadOnlyConnector : IStorageProvider, IStorageCapabilities, IDisposable, IConfigurationSerializable

Remarks

This is useful if you want to allow some code read-only access to a mutable store and ensure that it cannot modify the store via the manager instance.

Constructors

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ReadOnlyConnector(IStorageProvider)

Creates a new Read-Only connection which is a read-only wrapper around another store.

Declaration

public ReadOnlyConnector(IStorageProvider manager)

Parameters

Type	Name	Description
IStorageProvider	manager	Manager for the Store you want to wrap as read-only.

Properties

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DeleteSupported

Returns that deleting graphs is not supported.

Declaration

public bool DeleteSupported { get; }

Property Value

Type	Description
bool

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IOBehaviour

Gets the IO Behaviour of the read-only connection taking into account the IO Behaviour of the underlying store.

Declaration

public IOBehaviour IOBehaviour { get; }

Property Value

Type	Description
IOBehaviour

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IsReadOnly

Returns that the Store is read-only.

Declaration

public bool IsReadOnly { get; }

Property Value

Type	Description
bool

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IsReady

Returns whether the Store is ready.

Declaration

public bool IsReady { get; }

Property Value

Type	Description
bool

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ListGraphsSupported

Returns whether listing graphs is supported by the underlying store.

Declaration

public virtual bool ListGraphsSupported { get; }

Property Value

Type	Description
bool

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ParentServer

Gets the parent server (if any).

Declaration

public virtual IStorageServer ParentServer { get; }

Property Value

Type	Description
IStorageServer

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UpdateSupported

Returns that Update is not supported.

Declaration

public bool UpdateSupported { get; }

Property Value

Type	Description
bool

Methods

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DeleteGraph(string)

Throws an exception as you cannot delete a Graph using a read-only connection.

Declaration

public void DeleteGraph(string graphUri)

Parameters

Type	Name	Description
string	graphUri	URI of the Graph to delete.

Exceptions

Type	Condition
RdfStorageException	Thrown since you cannot delete a Graph using a read-only connection.

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DeleteGraph(Uri)

Throws an exception as you cannot delete a Graph using a read-only connection.

Declaration

public void DeleteGraph(Uri graphUri)

Parameters

Type	Name	Description
Uri	graphUri	URI of the Graph to delete.

Exceptions

Type	Condition
RdfStorageException	Thrown since you cannot delete a Graph using a read-only connection.

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Dispose()

Disposes of the Store.

Declaration

public void Dispose()

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ListGraphNames()

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

Declaration

public virtual IEnumerable<string> ListGraphNames()

Returns

Type	Description
IEnumerable<string>

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 in the underlying store.

Declaration

[Obsolete("Replaced by ListGraphNames")]
public virtual IEnumerable<Uri> ListGraphs()

Returns

Type	Description
IEnumerable<Uri>

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LoadGraph(IGraph, string)

Loads a Graph from the underlying Store.

Declaration

public void LoadGraph(IGraph g, string graphUri)

Parameters

Type	Name	Description
IGraph	g	Graph to load into.
string	graphUri	URI of the Graph to load.

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LoadGraph(IGraph, Uri)

Loads a Graph from the underlying Store.

Declaration

public void LoadGraph(IGraph g, Uri graphUri)

Parameters

Type	Name	Description
IGraph	g	Graph to load into.
Uri	graphUri	URI of the Graph to load.

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LoadGraph(IRdfHandler, string)

Loads a Graph from the underlying Store.

Declaration

public void LoadGraph(IRdfHandler handler, string graphUri)

Parameters

Type	Name	Description
IRdfHandler	handler	RDF Handler.
string	graphUri	URI of the Graph to load.

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LoadGraph(IRdfHandler, Uri)

Loads a Graph from the underlying Store.

Declaration

public void LoadGraph(IRdfHandler handler, Uri graphUri)

Parameters

Type	Name	Description
IRdfHandler	handler	RDF Handler.
Uri	graphUri	URI of the Graph to load.

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SaveGraph(IGraph)

Throws an exception since you cannot save a Graph using a read-only connection.

Declaration

public void SaveGraph(IGraph g)

Parameters

Type	Name	Description
IGraph	g	Graph to save.

Exceptions

Type	Condition
RdfStorageException	Thrown since you cannot save a Graph using a read-only connection.

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SerializeConfiguration(ConfigurationSerializationContext)

Serializes the Configuration of the Manager.

Declaration

public virtual void SerializeConfiguration(ConfigurationSerializationContext context)

Parameters

Type	Name	Description
ConfigurationSerializationContext	context	Configuration Serialization Context.

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ToString()

Gets the String representation of the Manager.

Declaration

public override string ToString()

Returns

Type	Description
string

Overrides

object.ToString()

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UpdateGraph(string, IEnumerable<Triple>, IEnumerable<Triple>)

Throws an exception since you cannot update a Graph using a read-only connection.

Declaration

public void UpdateGraph(string graphUri, IEnumerable<Triple> additions, IEnumerable<Triple> removals)

Parameters

Type	Name	Description
string	graphUri	URI of the Graph.
IEnumerable<Triple>	additions	Triples to be added.
IEnumerable<Triple>	removals	Triples to be removed.

Exceptions

Type	Condition
RdfStorageException	Thrown since you cannot update a Graph using a read-only connection.

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UpdateGraph(Uri, IEnumerable<Triple>, IEnumerable<Triple>)

Throws an exception since you cannot update a Graph using a read-only connection.

Declaration

public void UpdateGraph(Uri graphUri, IEnumerable<Triple> additions, IEnumerable<Triple> removals)

Parameters

Type	Name	Description
Uri	graphUri	URI of the Graph.
IEnumerable<Triple>	additions	Triples to be added.
IEnumerable<Triple>	removals	Triples to be removed.

Exceptions

Type	Condition
RdfStorageException	Thrown since you cannot update a Graph using a read-only connection.

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UpdateGraph(IRefNode, IEnumerable<Triple>, IEnumerable<Triple>)

Throws an exception since you cannot update a Graph using a read-only connection.

Declaration

public void UpdateGraph(IRefNode graphName, IEnumerable<Triple> additions, IEnumerable<Triple> removals)

Parameters

Type	Name	Description
IRefNode	graphName	Name of the Graph.
IEnumerable<Triple>	additions	Triples to be added.
IEnumerable<Triple>	removals	Triples to be removed.

Exceptions

Type	Condition
RdfStorageException	Thrown since you cannot update a Graph using a read-only connection.

Implements

IStorageProvider

IStorageCapabilities

IDisposable

IConfigurationSerializable

Extension Methods

Extensions.ToSafeString(object)

Extensions.AsEnumerable<T>(T)