Class WrapperTripleStore

Abstract decorator for Triple Stores to make it easier to add new functionality on top of existing implementations.

Inheritance

object

WrapperTripleStore

Implements

ITripleStore

IDisposable

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: VDS.RDF

Assembly: dotNetRdf.dll

Syntax

public class WrapperTripleStore : ITripleStore, IDisposable

Constructors

WrapperTripleStore(ITripleStore)

Creates a new triple store decorator around the given ITripleStore instance.

Declaration

public WrapperTripleStore(ITripleStore store)

Parameters

Type	Name	Description
ITripleStore	store	Triple Store.

Fields

_store

Underlying store.

Declaration

protected readonly ITripleStore _store

Field Value

Type	Description
ITripleStore

Properties

Graphs

Gets the Graphs of the store.

Declaration

public virtual BaseGraphCollection Graphs { get; }

Property Value

Type	Description
BaseGraphCollection

IsEmpty

Gets whether the store is empty.

Declaration

public virtual bool IsEmpty { get; }

Property Value

Type	Description
bool

this[Uri]

Gets a Graph from the store.

Declaration

[Obsolete("Replaced by this[IRefNode]")]
public virtual IGraph this[Uri graphUri] { get; }

Parameters

Type	Name	Description
Uri	graphUri	Graph URI.

Property Value

Type	Description
IGraph

this[IRefNode?]

Gets a graph from the triple store.

Declaration

public virtual IGraph this[IRefNode? graphName] { get; }

Parameters

Type	Name	Description
IRefNode	graphName	The name of the graph to be retrieved. May be null to retrieve the default (unnamed) graph.

Property Value

Type	Description
IGraph

Quads

Gets all the Quads in the Triple Store which are currently loaded in memory.

Declaration

public virtual IEnumerable<Quad> Quads { get; }

Property Value

Type	Description
IEnumerable<Quad>

Remarks

Since a Triple Store object may represent only a snapshot of the underlying Store evaluating this enumerator may only return some of the Quads in the Store and may depending on specific Triple Store return nothing.

Triples

Gets the triples of the store.

Declaration

public virtual IEnumerable<Triple> Triples { get; }

Property Value

Type	Description
IEnumerable<Triple>

UriFactory

Get the preferred URI factory to use when creating URIs in this store.

Declaration

public virtual IUriFactory UriFactory { get; }

Property Value

Type	Description
IUriFactory

Methods

Add(IGraph)

Adds a Graph to the store.

Declaration

public virtual bool Add(IGraph g)

Parameters

Type	Name	Description
IGraph	g	Graph.

Returns

Type	Description
bool

Add(IGraph, bool)

Adds a Graph to the store.

Declaration

public virtual bool Add(IGraph g, bool mergeIfExists)

Parameters

Type	Name	Description
IGraph	g	Graph.
bool	mergeIfExists	Whether to merge with an existing graph with the same URI.

Returns

Type	Description
bool

Add(IRefNode?)

Adds an empty graph with the specified name to the triple store.

Declaration

public virtual bool Add(IRefNode? graphName)

Parameters

Type	Name	Description
IRefNode	graphName

Returns

Type	Description
bool	True if a new graph was added, false otherwise.

AddFromUri(Uri)

Adds a Graph to the store from a URI.

Declaration

public virtual bool AddFromUri(Uri graphUri)

Parameters

Type	Name	Description
Uri	graphUri	Graph URI.

Returns

Type	Description
bool

AddFromUri(Uri, bool)

Adds a Graph to the store from a URI.

Declaration

public virtual bool AddFromUri(Uri graphUri, bool mergeIfExists)

Parameters

Type	Name	Description
Uri	graphUri	Graph URI.
bool	mergeIfExists	Whether to merge with an existing graph with the same URI.

Returns

Type	Description
bool

AddFromUri(Uri, bool, Loader)

Adds a Graph to the store from a URI.

Declaration

public virtual bool AddFromUri(Uri graphUri, bool mergeIfExists, Loader loader)

Parameters

Type	Name	Description
Uri	graphUri	Graph URI.
bool	mergeIfExists	Whether to merge with an existing graph with the same URI.
Loader	loader	The loader to use for retrieving and parsing the RDF data.

Returns

Type	Description
bool

Assert(Quad)

Assert a quad in the triple store.

Declaration

public virtual void Assert(Quad quad)

Parameters

Type	Name	Description
Quad	quad	The quad to be added.

Remarks

If the quad's graph is not currently in the triple store, a new graph will be added.

Dispose()

Disposes of the Triple Store.

Declaration

public virtual void Dispose()

GetQuads(INode?, INode?, INode?, IRefNode?, bool)

Return an enumeration of all quads in the store that match the specified subject, predicate, object and/or graph.

Declaration

public IEnumerable<Quad> GetQuads(INode? s = null, INode? p = null, INode? o = null, IRefNode? g = null, bool allGraphs = true)

Parameters

Type	Name	Description
INode	s	The subject node to match. Null matches all subject nodes.
INode	p	The predicate node to match. Null matches all predicate nodes.
INode	o	The object node to match. Null matches all object nodes.
IRefNode	g	The graph to match. Null matches all graphs if allGraphs is true, or only the unnamed graph is allGraphs is false.
bool	allGraphs

Returns

Type	Description
IEnumerable<Quad>

HasGraph(Uri)

Gets whether a Graph exists in the store.

Declaration

[Obsolete("Replaced by HasGraph(IRefNode)")]
public virtual bool HasGraph(Uri graphUri)

Parameters

Type	Name	Description
Uri	graphUri	Graph URI.

Returns

Type	Description
bool

HasGraph(IRefNode?)

Checks whether the graph with the given name is in this triple store.

Declaration

public virtual bool HasGraph(IRefNode? graphName)

Parameters

Type	Name	Description
IRefNode	graphName	The name of the graph to check for.

Returns

Type	Description
bool	True if this store contains a graph with the specified name, false otherwise.

Remarks

Pass null forgraphName to check for the default (unnamed) graph.

OnGraphAdded(object, TripleStoreEventArgs)

Event Handler which handles the Graph Added event from the underlying Graph Collection and raises the Triple Store's Graph Added event.

Declaration

protected virtual void OnGraphAdded(object sender, TripleStoreEventArgs args)

Parameters

Type	Name	Description
object	sender	Sender.
TripleStoreEventArgs	args	Graph Event Arguments.

Remarks

Override this method if your Triple Store implementation wishes to take additional actions when a Graph is added to the Store.

OnGraphChanged(object, TripleStoreEventArgs)

Event Handler which handles the Changed event of the contained Graphs by raising the Triple Store's Graph Changed event.

Declaration

protected virtual void OnGraphChanged(object sender, TripleStoreEventArgs args)

Parameters

Type	Name	Description
object	sender	Sender.
TripleStoreEventArgs	args	Graph Event Arguments.

OnGraphCleared(object, TripleStoreEventArgs)

Event Handler which handles the Cleared event of the contained Graphs by raising the Triple Stores's Graph Cleared event.

Declaration

protected virtual void OnGraphCleared(object sender, TripleStoreEventArgs args)

Parameters

Type	Name	Description
object	sender	Sender.
TripleStoreEventArgs	args	Graph Event Arguments.

OnGraphMerged(object, TripleStoreEventArgs)

Event Handler which handles the Merged event of the contained Graphs by raising the Triple Store's Graph Merged event.

Declaration

protected virtual void OnGraphMerged(object sender, TripleStoreEventArgs args)

Parameters

Type	Name	Description
object	sender	Sender.
TripleStoreEventArgs	args	Graph Event Arguments.

OnGraphRemoved(object, TripleStoreEventArgs)

Event Handler which handles the Graph Removed event from the underlying Graph Collection and raises the Triple Stores's Graph Removed event.

Declaration

protected virtual void OnGraphRemoved(object sender, TripleStoreEventArgs args)

Parameters

Type	Name	Description
object	sender	Sender.
TripleStoreEventArgs	args	Graph Event Arguments.

RaiseGraphAdded(GraphEventArgs)

Helper method for raising the Graph Added event manually.

Declaration

protected void RaiseGraphAdded(GraphEventArgs args)

Parameters

Type	Name	Description
GraphEventArgs	args	Graph Event Arguments.

RaiseGraphAdded(IGraph)

Helper method for raising the Graph Added event manually.

Declaration

protected void RaiseGraphAdded(IGraph g)

Parameters

Type	Name	Description
IGraph	g	Graph.

RaiseGraphChanged(GraphEventArgs)

Helper method for raising the Graph Changed event manually.

Declaration

protected void RaiseGraphChanged(GraphEventArgs args)

Parameters

Type	Name	Description
GraphEventArgs	args	Graph Event Arguments.

RaiseGraphChanged(IGraph)

Helper method for raising the Graph Changed event manually.

Declaration

protected void RaiseGraphChanged(IGraph g)

Parameters

Type	Name	Description
IGraph	g	Graph.

RaiseGraphCleared(GraphEventArgs)

Helper method for raising the Graph Cleared event manually.

Declaration

protected void RaiseGraphCleared(GraphEventArgs args)

Parameters

Type	Name	Description
GraphEventArgs	args	Graph Event Arguments.

RaiseGraphMerged(GraphEventArgs)

Helper method for raising the Graph Merged event manually.

Declaration

protected void RaiseGraphMerged(GraphEventArgs args)

Parameters

Type	Name	Description
GraphEventArgs	args	Graph Event Arguments.

RaiseGraphRemoved(GraphEventArgs)

Helper method for raising the Graph Removed event manually.

Declaration

protected void RaiseGraphRemoved(GraphEventArgs args)

Parameters

Type	Name	Description
GraphEventArgs	args	Graph Event Arguments.

RaiseGraphRemoved(IGraph)

Helper method for raising the Graph Removed event manually.

Declaration

protected void RaiseGraphRemoved(IGraph g)

Parameters

Type	Name	Description
IGraph	g	Graph.

Remove(Uri?)

Removes a Graph from the store.

Declaration

[Obsolete("Replaced by Remove(IRefNode)")]
public virtual bool Remove(Uri? graphUri)

Parameters

Type	Name	Description
Uri	graphUri	Graph URI.

Returns

Type	Description
bool

Remove(IRefNode?)

Removes a graph from the triple store.

Declaration

public virtual bool Remove(IRefNode? graphName)

Parameters

Type	Name	Description
IRefNode	graphName	The name of the graph to remove.

Returns

Type	Description
bool	True if the operation removed a graph, false if no matching graph was found to remove.

Retract(Quad)

Remove a quad from the triple store.

Declaration

public virtual void Retract(Quad quad)

Parameters

Type	Name	Description
Quad	quad	The quad to be removed.

Remarks

If the quad's graph is not currently in the triple store, this operation will make no modification to the triple store. Otherwise it will invoke the Retract method on the graph.

Events

GraphAdded

Event which is raised when a graph is added

Declaration

public event TripleStoreEventHandler? GraphAdded

Event Type

Type	Description
TripleStoreEventHandler

GraphChanged

Event which is raised when a graph is changed

Declaration

public event TripleStoreEventHandler? GraphChanged

Event Type

Type	Description
TripleStoreEventHandler

GraphCleared

Event which is raised when a graph is cleared

Declaration

public event TripleStoreEventHandler? GraphCleared

Event Type

Type	Description
TripleStoreEventHandler

GraphMerged

Event which is raised when a graph is merged

Declaration

public event TripleStoreEventHandler? GraphMerged

Event Type

Type	Description
TripleStoreEventHandler

GraphRemoved

Events which is raised when a graph is removed

Declaration

public event TripleStoreEventHandler? GraphRemoved

Event Type

Type	Description
TripleStoreEventHandler

Implements

ITripleStore

IDisposable

Extension Methods

Extensions.ToSafeString(object)

TripleStoreExtensions.LoadFromEmbeddedResource(ITripleStore, string)

TripleStoreExtensions.LoadFromEmbeddedResource(ITripleStore, string, IStoreReader)

TripleStoreExtensions.LoadFromFile(ITripleStore, string)

TripleStoreExtensions.LoadFromFile(ITripleStore, string, IStoreReader)

TripleStoreExtensions.LoadFromString(ITripleStore, string)

TripleStoreExtensions.LoadFromString(ITripleStore, string, IStoreReader)

TripleStoreExtensions.LoadFromUri(ITripleStore, Uri)

TripleStoreExtensions.LoadFromUri(ITripleStore, Uri, IStoreReader)

TripleStoreExtensions.LoadFromUri(ITripleStore, Uri, IStoreReader, Loader)

TripleStoreExtensions.SaveToFile(ITripleStore, string)

TripleStoreExtensions.SaveToFile(ITripleStore, string, IStoreWriter)

Extensions.AsEnumerable<T>(T)