Class ReadOnlyConnector

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

Inheritance

System.Object

ReadOnlyConnector

QueryableReadOnlyConnector

Implements

IStorageProvider

IStorageCapabilities

System.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.

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.

Properties

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DeleteSupported

Returns that deleting graphs is not supported.

Declaration

public bool DeleteSupported { get; }

Property Value

Type	Description
System.Boolean

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.

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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

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.

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IsReadOnly

Returns that the Store is read-only.

Declaration

public bool IsReadOnly { get; }

Property Value

Type	Description
System.Boolean

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.

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IsReady

Returns whether the Store is ready.

Declaration

public bool IsReady { get; }

Property Value

Type	Description
System.Boolean

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.

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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
System.Boolean

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.

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ParentServer

Gets the parent server (if any).

Declaration

public virtual IStorageServer ParentServer { get; }

Property Value

Type	Description
IStorageServer

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.

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UpdateSupported

Returns that Update is not supported.

Declaration

public bool UpdateSupported { get; }

Property Value

Type	Description
System.Boolean

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.

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.

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.

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
System.Uri	graphUri	URI of the Graph to delete.

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.

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()

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.

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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
System.Collections.Generic.IEnumerable<T><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
System.Collections.Generic.IEnumerable<T><System.Uri>

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.

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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.

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.

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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.
System.Uri	graphUri	URI of the Graph to load.

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.

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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.

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.

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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.
System.Uri	graphUri	URI of the Graph to load.

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.

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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.

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.

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.

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.

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ToString()

Gets the String representation of the Manager.

Declaration

public override string ToString()

Returns

Type	Description
string

Overrides

object.ToString()

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.

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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.
System.Collections.Generic.IEnumerable<T><Triple>	additions	Triples to be added.
System.Collections.Generic.IEnumerable<T><Triple>	removals	Triples to be removed.

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.

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
System.Uri	graphUri	URI of the Graph.
System.Collections.Generic.IEnumerable<T><Triple>	additions	Triples to be added.
System.Collections.Generic.IEnumerable<T><Triple>	removals	Triples to be removed.

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.

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.
System.Collections.Generic.IEnumerable<T><Triple>	additions	Triples to be added.
System.Collections.Generic.IEnumerable<T><Triple>	removals	Triples to be removed.

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.

Exceptions

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

Implements

IStorageProvider

IStorageCapabilities

System.IDisposable

IConfigurationSerializable

Extension Methods

Extensions.ToSafeString(object)

Extensions.AsEnumerable<T>(T)