Class BaseTripleStore

Abstract Base Class for a Triple Store.

Inheritance

System.Object

BaseTripleStore

PersistentTripleStore

SimpleTripleStore

TripleStore

Implements

ITripleStore

System.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 abstract class BaseTripleStore : ITripleStore, IDisposable

Constructors

BaseTripleStore(BaseGraphCollection)

Creates a new Base Triple Store.

Declaration

protected BaseTripleStore(BaseGraphCollection graphCollection)

Parameters

Type	Name	Description
BaseGraphCollection	graphCollection	Graph Collection to use.

Fields

_graphs

Collection of Graphs that comprise the Triple Store.

Declaration

protected BaseGraphCollection _graphs

Field Value

Type	Description
BaseGraphCollection

Properties

Graphs

Gets the Collection of Graphs that comprise this Triple Store.

Declaration

public BaseGraphCollection Graphs { get; }

Property Value

Type	Description
BaseGraphCollection

IsEmpty

Gets whether the Triple Store is empty.

Declaration

public virtual bool IsEmpty { get; }

Property Value

Type	Description
System.Boolean

this[Uri]

Gets the Graph with the given URI.

Declaration

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

Parameters

Type	Name	Description
System.Uri	graphUri	Graph URI.

Property Value

Type	Description
IGraph

this[IRefNode]

Gets a graph from the triple store.

Declaration

public 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

Triples

Gets all the Triples in the Triple Store.

Declaration

public IEnumerable<Triple> Triples { get; }

Property Value

Type	Description
System.Collections.Generic.IEnumerable<T><Triple>

UriFactory

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

Declaration

public abstract IUriFactory UriFactory { get; }

Property Value

Type	Description
IUriFactory

Methods

Add(IGraph, bool)

Adds a Graph into the Triple Store using the chosen Merging Behaviour.

Declaration

public virtual bool Add(IGraph g, bool mergeIfExists)

Parameters

Type	Name	Description
IGraph	g	Graph to add.
System.Boolean	mergeIfExists	Whether the Graph should be merged with an existing Graph with the same Base Uri.

Returns

Type	Description
System.Boolean

Add(IGraph)

Adds a Graph into the Triple Store.

Declaration

public virtual bool Add(IGraph g)

Parameters

Type	Name	Description
IGraph	g	Graph to add.

Returns

Type	Description
System.Boolean

AddFromUri(Uri, bool, Loader)

Adds a Graph into the Triple Store which is retrieved from the given Uri using the chosen Merging Behaviour.

Declaration

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

Parameters

Type	Name	Description
System.Uri	graphUri	Graph to add.
System.Boolean	mergeIfExists	Whether the Graph should be merged with an existing Graph with the same Base Uri.
Loader	loader	The loader to use to retrieve and parse remote data.

Returns

Type	Description
System.Boolean

AddFromUri(Uri, bool)

Adds a Graph into the Triple Store which is retrieved from the given Uri using the chosen Merging Behaviour.

Declaration

public virtual bool AddFromUri(Uri graphUri, bool mergeIfExists)

Parameters

Type	Name	Description
System.Uri	graphUri	Graph to add.
System.Boolean	mergeIfExists	Whether the Graph should be merged with an existing Graph with the same Base Uri.

Returns

Type	Description
System.Boolean

AddFromUri(Uri)

Adds a Graph into the Triple Store which is retrieved from the given Uri.

Declaration

public virtual bool AddFromUri(Uri graphUri)

Parameters

Type	Name	Description
System.Uri	graphUri	Uri of the Graph to load.

Returns

Type	Description
System.Boolean

AttachEventHandlers(IGraph)

Helper method which attaches the Triple Store's Event Handlers to the relevant events of a Graph.

Declaration

protected void AttachEventHandlers(IGraph g)

Parameters

Type	Name	Description
IGraph	g	Graph.

DetachEventHandlers(IGraph)

Helper method which detaches the Triple Store's Event Handlers from the relevant events of a Graph.

Declaration

protected void DetachEventHandlers(IGraph g)

Parameters

Type	Name	Description
IGraph	g

Dispose()

Disposes of the Triple Store.

Declaration

public abstract void Dispose()

Remarks

Derived classes must override this to implement required disposal actions.

HasGraph(Uri)

Checks whether a Graph with the given Base Uri exists in the Triple Store.

Declaration

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

Parameters

Type	Name	Description
System.Uri	graphUri	Graph Uri.

Returns

Type	Description
System.Boolean	True if the Graph exists in the Triple Store.

HasGraph(IRefNode)

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

Declaration

public bool HasGraph(IRefNode graphName)

Parameters

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

Returns

Type	Description
System.Boolean	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, GraphEventArgs)

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, GraphEventArgs args)

Parameters

Type	Name	Description
System.Object	sender	Sender.
GraphEventArgs	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, GraphEventArgs)

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, GraphEventArgs args)

Parameters

Type	Name	Description
System.Object	sender	Sender.
GraphEventArgs	args	Graph Event Arguments.

OnGraphCleared(object, GraphEventArgs)

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, GraphEventArgs args)

Parameters

Type	Name	Description
System.Object	sender	Sender.
GraphEventArgs	args	Graph Event Arguments.

OnGraphMerged(object, GraphEventArgs)

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, GraphEventArgs args)

Parameters

Type	Name	Description
System.Object	sender	Sender.
GraphEventArgs	args	Graph Event Arguments.

OnGraphRemoved(object, GraphEventArgs)

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, GraphEventArgs args)

Parameters

Type	Name	Description
System.Object	sender	Sender.
GraphEventArgs	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 Triple Store.

Declaration

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

Parameters

Type	Name	Description
System.Uri	graphUri	Uri of the Graph to Remove.

Returns

Type	Description
System.Boolean

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
System.Boolean	True if the operation removed a graph, false if no matching graph was found to remove.

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 Graphs contents changes

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 has a merge operation performed on it

Declaration

public event TripleStoreEventHandler GraphMerged

Event Type

Type	Description
TripleStoreEventHandler

GraphRemoved

Event which is raised when a Graph is removed

Declaration

public event TripleStoreEventHandler GraphRemoved

Event Type

Type	Description
TripleStoreEventHandler

Implements

ITripleStore

System.IDisposable

Extension Methods

Extensions.ToSafeString(object)

Extensions.AsEnumerable<T>(T)

TripleStoreExtensions.LoadFromEmbeddedResource(ITripleStore, string, IStoreReader)

TripleStoreExtensions.LoadFromEmbeddedResource(ITripleStore, string)

TripleStoreExtensions.LoadFromFile(ITripleStore, string, IStoreReader)

TripleStoreExtensions.LoadFromFile(ITripleStore, string)

TripleStoreExtensions.LoadFromString(ITripleStore, string, IStoreReader)

TripleStoreExtensions.LoadFromString(ITripleStore, string)

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

TripleStoreExtensions.LoadFromUri(ITripleStore, Uri, IStoreReader)

TripleStoreExtensions.LoadFromUri(ITripleStore, Uri)

TripleStoreExtensions.SaveToFile(ITripleStore, string, IStoreWriter)

TripleStoreExtensions.SaveToFile(ITripleStore, string)