Class BaseGraph

Abstract Base Implementation of the IGraph interface.

Inheritance

System.Object

BaseGraph

Graph

Implements

IGraph

INodeFactory

System.IDisposable

ITripleIndex

System.IEquatable<T><IGraph>

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 BaseGraph : IGraph, INodeFactory, IDisposable, ITripleIndex, IEquatable<IGraph>

Constructors

BaseGraph(BaseTripleCollection, IRefNode, INodeFactory, IUriFactory)

Creates a new Base Graph using the given Triple Collection.

Declaration

protected BaseGraph(BaseTripleCollection tripleCollection, IRefNode graphName = null, INodeFactory nodeFactory = null, IUriFactory uriFactory = null)

Parameters

Type	Name	Description
BaseTripleCollection	tripleCollection	Triple Collection to use. If null, a new TreeIndexedTripleCollection will be used.
IRefNode	graphName	The name to assign to the graph.
INodeFactory	nodeFactory	The factory to use when creating nodes in this graph.
IUriFactory	uriFactory	The factory to use when creating URIs in this graph. If not specified or null, defaults to the UriFactory property of nodeFactory or else root UriFactory if nodeFactory is null.

BaseGraph(IRefNode)

Creates a new Base Graph which uses the default TreeIndexedTripleCollection as the Triple Collection.

Declaration

protected BaseGraph(IRefNode graphName = null)

Parameters

Type	Name	Description
IRefNode	graphName	The name to assign to the new graph.

Fields

_bnodemapper

Blank Node ID Mapper.

Declaration

protected BlankNodeMapper _bnodemapper

Field Value

Type	Description
BlankNodeMapper

_name

The name of the graph.

Declaration

protected readonly IRefNode _name

Field Value

Type	Description
IRefNode

_triples

Collection of Triples in the Graph.

Declaration

protected BaseTripleCollection _triples

Field Value

Type	Description
BaseTripleCollection

NodeFactory

The factory to use when creating nodes in this graph.

Declaration

protected readonly INodeFactory NodeFactory

Field Value

Type	Description
INodeFactory

Properties

AllNodes

Gets the unique Subject, Predicate and Object nodes of the asserted triples in the Graph.

Declaration

public virtual IEnumerable<INode> AllNodes { get; }

Property Value

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

AllQuotedNodes

Gets the unique subject, predicate and object nodes of the quoted triples in the graph.

Declaration

public virtual IEnumerable<INode> AllQuotedNodes { get; }

Property Value

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

BaseUri

Gets the current Base Uri for the Graph.

Declaration

public Uri BaseUri { get; set; }

Property Value

Type	Description
System.Uri

Remarks

This value may be changed during Graph population depending on whether the Concrete syntax allows the Base Uri to be changed and how the Parser handles this.

IsEmpty

Gets whether a Graph is Empty ie. Contains No Triples or Nodes.

Declaration

public virtual bool IsEmpty { get; }

Property Value

Type	Description
System.Boolean

Name

Get or set the name of the graph.

Declaration

public virtual IRefNode Name { get; }

Property Value

Type	Description
IRefNode

NamespaceMap

Gets the Namespace Mapper for this Graph which contains all in use Namespace Prefixes and their URIs.

Declaration

public INamespaceMapper NamespaceMap { get; }

Property Value

Type	Description
INamespaceMapper

Nodes

Gets the unique Subject and Object nodes of the Graph.

Declaration

public virtual IEnumerable<INode> Nodes { get; }

Property Value

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

Remarks

This property returns only nodes that appear in the Subject or Object position in asserted triples. To retrieve a list of all INode instances in a graph including those in Predicate position in a triple, use the AllNodes property.

NormalizeLiteralValues

Get or set whether to normalize the value strings of literal nodes on creation.

Declaration

public virtual bool NormalizeLiteralValues { get; set; }

Property Value

Type	Description
System.Boolean

QuotedNodes

Gets the unique subject and object nodes of the quoted triples in the graph.

Declaration

public virtual IEnumerable<INode> QuotedNodes { get; }

Property Value

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

QuotedTriples

Gets the quoted triples in the graph.

Declaration

public virtual IEnumerable<Triple> QuotedTriples { get; }

Property Value

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

Triples

Gets the set of Triples described in this Graph.

Declaration

public virtual BaseTripleCollection Triples { get; }

Property Value

Type	Description
BaseTripleCollection

UriFactory

The factory to use when creating URIs in this graph.

Declaration

public IUriFactory UriFactory { get; set; }

Property Value

Type	Description
IUriFactory

Remarks

This property delegates to the UriFactory property of NodeFactory.

Methods

Assert(IEnumerable<Triple>)

Asserts a List of Triples in the graph.

Declaration

public abstract bool Assert(IEnumerable<Triple> ts)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<T><Triple>	ts	List of Triples in the form of an IEnumerable.

Returns

Type	Description
System.Boolean

Assert(Triple)

Asserts a Triple in the Graph.

Declaration

public abstract bool Assert(Triple t)

Parameters

Type	Name	Description
Triple	t	The Triple to add to the Graph.

Returns

Type	Description
System.Boolean

AttachEventHandlers(BaseTripleCollection)

Helper method for attaching the necessary event Handlers to a Triple Collection.

Declaration

protected void AttachEventHandlers(BaseTripleCollection tripleCollection)

Parameters

Type	Name	Description
BaseTripleCollection	tripleCollection	Triple Collection.

Remarks

May be useful if you replace the Triple Collection after instantiation e.g. as done in SparqlView's.

Clear()

Clears all Triples from the Graph.

Declaration

public virtual void Clear()

Remarks

The Graph will raise the ClearRequested event at the start of the Clear operation which allows for aborting the operation if the operation is cancelled by an event handler. On completing the Clear the Cleared event will be raised.

ContainsQuotedTriple(Triple)

Gets whether a given triple is quoted in this graph.

Declaration

public virtual bool ContainsQuotedTriple(Triple t)

Parameters

Type	Name	Description
Triple	t	Triple to test.

Returns

Type	Description
System.Boolean	True if the triple is quoted in this graph, false otherwise.

ContainsTriple(Triple)

Gets whether a given triple is asserted in this Graph.

Declaration

public virtual bool ContainsTriple(Triple t)

Parameters

Type	Name	Description
Triple	t	Triple to test.

Returns

Type	Description
System.Boolean	True if the triple is asserted in this graph, false otherwise.

CreateBlankNode()

Creates a Blank Node with a new automatically generated ID.

Declaration

public virtual IBlankNode CreateBlankNode()

Returns

Type	Description
IBlankNode

CreateBlankNode(string)

Creates a Blank Node with the given Node ID.

Declaration

public virtual IBlankNode CreateBlankNode(string nodeId)

Parameters

Type	Name	Description
string	nodeId	Node ID.

Returns

Type	Description
IBlankNode

CreateGraphLiteralNode()

Creates a Graph Literal Node which represents the empty Subgraph.

Declaration

public virtual IGraphLiteralNode CreateGraphLiteralNode()

Returns

Type	Description
IGraphLiteralNode

CreateGraphLiteralNode(IGraph)

Creates a Graph Literal Node which represents the given Subgraph.

Declaration

public virtual IGraphLiteralNode CreateGraphLiteralNode(IGraph subgraph)

Parameters

Type	Name	Description
IGraph	subgraph	Subgraph.

Returns

Type	Description
IGraphLiteralNode

CreateLiteralNode(string, string)

Creates a Literal Node with the given Value and Language.

Declaration

public virtual ILiteralNode CreateLiteralNode(string literal, string langSpec)

Parameters

Type	Name	Description
string	literal	Value of the Literal.
string	langSpec	Language Specifier for the Literal.

Returns

Type	Description
ILiteralNode

CreateLiteralNode(string, Uri)

Creates a Literal Node with the given Value and Data Type.

Declaration

public virtual ILiteralNode CreateLiteralNode(string literal, Uri datatype)

Parameters

Type	Name	Description
string	literal	Value of the Literal.
System.Uri	datatype	Data Type URI of the Literal.

Returns

Type	Description
ILiteralNode

CreateLiteralNode(string)

Creates a Literal Node with the given Value.

Declaration

public virtual ILiteralNode CreateLiteralNode(string literal)

Parameters

Type	Name	Description
string	literal	Value of the Literal.

Returns

Type	Description
ILiteralNode

CreateTripleNode(Triple)

Creates a node that quotes the given triple.

Declaration

public virtual ITripleNode CreateTripleNode(Triple triple)

Parameters

Type	Name	Description
Triple	triple	The triple to be the quoted value of the created node.

Returns

Type	Description
ITripleNode

CreateUriNode()

Creates a URI Node that corresponds to the current Base URI of the node factory.

Declaration

public virtual IUriNode CreateUriNode()

Returns

Type	Description
IUriNode

CreateUriNode(string)

Creates a URI Node for the given QName using the Graphs NamespaceMap to resolve the QName.

Declaration

public virtual IUriNode CreateUriNode(string qName)

Parameters

Type	Name	Description
string	qName	QName.

Returns

Type	Description
IUriNode

CreateUriNode(Uri)

Creates a URI Node for the given URI.

Declaration

public virtual IUriNode CreateUriNode(Uri uri)

Parameters

Type	Name	Description
System.Uri	uri	URI.

Returns

Type	Description
IUriNode

CreateVariableNode(string)

Creates a Variable Node for the given Variable Name.

Declaration

public virtual IVariableNode CreateVariableNode(string varName)

Parameters

Type	Name	Description
string	varName

Returns

Type	Description
IVariableNode

DetachEventHandlers(BaseTripleCollection)

Helper method for detaching the necessary event Handlers from a Triple Collection.

Declaration

protected void DetachEventHandlers(BaseTripleCollection tripleCollection)

Parameters

Type	Name	Description
BaseTripleCollection	tripleCollection	Triple Collection.

Remarks

May be useful if you replace the Triple Collection after instantiation e.g. as done in SparqlView's.

Difference(IGraph)

Computes the Difference between this Graph the given Graph.

Declaration

public GraphDiffReport Difference(IGraph g)

Parameters

Type	Name	Description
IGraph	g	Graph.

Returns

Type	Description
GraphDiffReport

Remarks

Produces a report which shows the changes that must be made to this Graph to produce the given Graph.

Dispose()

Disposes of a Graph.

Declaration

public virtual void Dispose()

Equals(IGraph, out Dictionary<INode, INode>)

Determines whether this Graph is equal to the given Graph.

Declaration

public virtual bool Equals(IGraph g, out Dictionary<INode, INode> mapping)

Parameters

Type	Name	Description
IGraph	g	Graph to test for equality.
System.Collections.Generic.Dictionary<TKey, TValue><INode, INode>	mapping	Mapping of Blank Nodes iff the Graphs are equal and contain some Blank Nodes.

Returns

Type	Description
System.Boolean

Remarks

See GraphMatcher for documentation of the equality algorithm used.

Equals(IGraph)

Determines whether a Graph is equal to another Object.

Declaration

public bool Equals(IGraph other)

Parameters

Type	Name	Description
IGraph	other	Other graph to compare to.

Returns

Type	Description
System.Boolean

Remarks

Graph Equality is determined by a somewhat complex algorithm which is explained in the remarks of the other overload for Equals.

GetBlankNode(string)

Returns the Blank Node with the given Identifier.

Declaration

public abstract IBlankNode GetBlankNode(string nodeId)

Parameters

Type	Name	Description
string	nodeId	The Identifier of the Blank Node to select.

Returns

Type	Description
IBlankNode	Either the Blank Node or null if no Node with the given Identifier exists.

GetLiteralNode(string, string)

Returns the LiteralNode with the given Value in the given Language if it exists.

Declaration

public abstract ILiteralNode GetLiteralNode(string literal, string langspec)

Parameters

Type	Name	Description
string	literal	The literal value of the Node to select.
string	langspec	The Language Specifier for the Node to select.

Returns

Type	Description
ILiteralNode	Either the LiteralNode Or null if no Node with the given Value and Language Specifier exists.

GetLiteralNode(string, Uri)

Returns the LiteralNode with the given Value and given Data Type if it exists.

Declaration

public abstract ILiteralNode GetLiteralNode(string literal, Uri datatype)

Parameters

Type	Name	Description
string	literal	The literal value of the Node to select.
System.Uri	datatype	The Uri for the Data Type of the Literal to select.

Returns

Type	Description
ILiteralNode	Either the LiteralNode Or null if no Node with the given Value and Data Type exists.

GetLiteralNode(string)

Returns the LiteralNode with the given Value if it exists.

Declaration

public abstract ILiteralNode GetLiteralNode(string literal)

Parameters

Type	Name	Description
string	literal	The literal value of the Node to select.

Returns

Type	Description
ILiteralNode	Either the LiteralNode Or null if no Node with the given Value exists.

Remarks

The LiteralNode in the Graph must have no Language or DataType set.

GetNextBlankNodeID()

Creates a new unused Blank Node ID and returns it.

Declaration

public virtual string GetNextBlankNodeID()

Returns

Type	Description
string

GetQuoted(Uri)

Selects all quoted triples which have a Uri Node with the given Uri.

Declaration

public virtual IEnumerable<Triple> GetQuoted(Uri uri)

Parameters

Type	Name	Description
System.Uri	uri	Uri.

Returns

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

GetQuoted(INode)

Selects all quoted triples which contain the given Node.

Declaration

public abstract IEnumerable<Triple> GetQuoted(INode n)

Parameters

Type	Name	Description
INode	n	Node.

Returns

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

GetQuotedWithObject(Uri)

Selects all quoted triples where the Object is a Uri Node with the given Uri.

Declaration

public virtual IEnumerable<Triple> GetQuotedWithObject(Uri u)

Parameters

Type	Name	Description
System.Uri	u	Uri.

Returns

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

GetQuotedWithObject(INode)

Selects all quoted triples where the Object is a given Node.

Declaration

public abstract IEnumerable<Triple> GetQuotedWithObject(INode n)

Parameters

Type	Name	Description
INode	n	Node.

Returns

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

GetQuotedWithPredicate(Uri)

Selects all quoted triples where the Predicate is a Uri Node with the given Uri.

Declaration

public virtual IEnumerable<Triple> GetQuotedWithPredicate(Uri u)

Parameters

Type	Name	Description
System.Uri	u	Uri.

Returns

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

GetQuotedWithPredicate(INode)

Selects all quoted triples where the Predicate is a given Node.

Declaration

public abstract IEnumerable<Triple> GetQuotedWithPredicate(INode n)

Parameters

Type	Name	Description
INode	n	Node.

Returns

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

GetQuotedWithPredicateObject(INode, INode)

Selects all quoted triples with the given Predicate and Object.

Declaration

public abstract IEnumerable<Triple> GetQuotedWithPredicateObject(INode pred, INode obj)

Parameters

Type	Name	Description
INode	pred	Predicate.
INode	obj	Object.

Returns

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

GetQuotedWithSubject(Uri)

Selects all quoted triples where the Subject is a Uri Node with the given Uri.

Declaration

public virtual IEnumerable<Triple> GetQuotedWithSubject(Uri u)

Parameters

Type	Name	Description
System.Uri	u	Uri.

Returns

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

GetQuotedWithSubject(INode)

Selects all quoted triples where the Subject is a given Node.

Declaration

public abstract IEnumerable<Triple> GetQuotedWithSubject(INode n)

Parameters

Type	Name	Description
INode	n	Node.

Returns

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

GetQuotedWithSubjectObject(INode, INode)

Selects all quoted triples with the given Subject and Object.

Declaration

public abstract IEnumerable<Triple> GetQuotedWithSubjectObject(INode subj, INode obj)

Parameters

Type	Name	Description
INode	subj	Subject.
INode	obj	Object.

Returns

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

GetQuotedWithSubjectPredicate(INode, INode)

Selects all quoted triples with the given Subject and Predicate.

Declaration

public abstract IEnumerable<Triple> GetQuotedWithSubjectPredicate(INode subj, INode pred)

Parameters

Type	Name	Description
INode	subj	Subject.
INode	pred	Predicate.

Returns

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

GetTripleNode(Triple)

Selects the Triple Node with the given Triple value if it exists in the graph.

Declaration

public abstract ITripleNode GetTripleNode(Triple triple)

Parameters

Type	Name	Description
Triple	triple	Triple.

Returns

Type	Description
ITripleNode	The triple node if it exists in the graph or else null.

GetTriples(Uri)

Gets all the Triples involving the given Uri.

Declaration

public abstract IEnumerable<Triple> GetTriples(Uri uri)

Parameters

Type	Name	Description
System.Uri	uri	The Uri to find Triples involving.

Returns

Type	Description
System.Collections.Generic.IEnumerable<T><Triple>	Zero/More Triples.

GetTriples(INode)

Gets all the Triples involving the given Node.

Declaration

public abstract IEnumerable<Triple> GetTriples(INode n)

Parameters

Type	Name	Description
INode	n	The Node to find Triples involving.

Returns

Type	Description
System.Collections.Generic.IEnumerable<T><Triple>	Zero/More Triples.

GetTriplesWithObject(Uri)

Gets all the Triples with the given Uri as the Object.

Declaration

public abstract IEnumerable<Triple> GetTriplesWithObject(Uri u)

Parameters

Type	Name	Description
System.Uri	u	The Uri to find Triples with it as the Object.

Returns

Type	Description
System.Collections.Generic.IEnumerable<T><Triple>	Zero/More Triples.

GetTriplesWithObject(INode)

Gets all the Triples with the given Node as the Object.

Declaration

public abstract IEnumerable<Triple> GetTriplesWithObject(INode n)

Parameters

Type	Name	Description
INode	n	The Node to find Triples with it as the Object.

Returns

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

GetTriplesWithPredicate(Uri)

Gets all the Triples with the given Uri as the Predicate.

Declaration

public abstract IEnumerable<Triple> GetTriplesWithPredicate(Uri u)

Parameters

Type	Name	Description
System.Uri	u	The Uri to find Triples with it as the Predicate.

Returns

Type	Description
System.Collections.Generic.IEnumerable<T><Triple>	Zero/More Triples.

GetTriplesWithPredicate(INode)

Gets all the Triples with the given Node as the Predicate.

Declaration

public abstract IEnumerable<Triple> GetTriplesWithPredicate(INode n)

Parameters

Type	Name	Description
INode	n	The Node to find Triples with it as the Predicate.

Returns

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

GetTriplesWithPredicateObject(INode, INode)

Selects all Triples with the given Predicate and Object.

Declaration

public abstract IEnumerable<Triple> GetTriplesWithPredicateObject(INode pred, INode obj)

Parameters

Type	Name	Description
INode	pred	Predicate.
INode	obj	Object.

Returns

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

GetTriplesWithSubject(Uri)

Gets all the Triples with the given Uri as the Subject.

Declaration

public abstract IEnumerable<Triple> GetTriplesWithSubject(Uri u)

Parameters

Type	Name	Description
System.Uri	u	The Uri to find Triples with it as the Subject.

Returns

Type	Description
System.Collections.Generic.IEnumerable<T><Triple>	Zero/More Triples.

GetTriplesWithSubject(INode)

Gets all the Triples with the given Node as the Subject.

Declaration

public abstract IEnumerable<Triple> GetTriplesWithSubject(INode n)

Parameters

Type	Name	Description
INode	n	The Node to find Triples with it as the Subject.

Returns

Type	Description
System.Collections.Generic.IEnumerable<T><Triple>	Zero/More Triples.

GetTriplesWithSubjectObject(INode, INode)

Selects all Triples with the given Subject and Object.

Declaration

public abstract IEnumerable<Triple> GetTriplesWithSubjectObject(INode subj, INode obj)

Parameters

Type	Name	Description
INode	subj	Subject.
INode	obj	Object.

Returns

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

GetTriplesWithSubjectPredicate(INode, INode)

Selects all Triples with the given Subject and Predicate.

Declaration

public abstract IEnumerable<Triple> GetTriplesWithSubjectPredicate(INode subj, INode pred)

Parameters

Type	Name	Description
INode	subj	Subject.
INode	pred	Predicate.

Returns

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

GetUriNode(string)

Returns the UriNode with the given QName if it exists.

Declaration

public abstract IUriNode GetUriNode(string qname)

Parameters

Type	Name	Description
string	qname	The QName of the Node to select.

Returns

Type	Description
IUriNode

GetUriNode(Uri)

Returns the UriNode with the given Uri if it exists.

Declaration

public abstract IUriNode GetUriNode(Uri uri)

Parameters

Type	Name	Description
System.Uri	uri	The Uri of the Node to select.

Returns

Type	Description
IUriNode	Either the UriNode Or null if no Node with the given Uri exists.

HasSubGraph(IGraph, out Dictionary<INode, INode>)

Checks whether this Graph has the given Graph as a sub-graph.

Declaration

public bool HasSubGraph(IGraph g, out Dictionary<INode, INode> mapping)

Parameters

Type	Name	Description
IGraph	g	Graph.
System.Collections.Generic.Dictionary<TKey, TValue><INode, INode>	mapping	Mapping of Blank Nodes.

Returns

Type	Description
System.Boolean

HasSubGraph(IGraph)

Checks whether this Graph has the given Graph as a sub-graph.

Declaration

public bool HasSubGraph(IGraph g)

Parameters

Type	Name	Description
IGraph	g	Graph.

Returns

Type	Description
System.Boolean

IsSubGraphOf(IGraph, out Dictionary<INode, INode>)

Checks whether this Graph is a sub-graph of the given Graph.

Declaration

public bool IsSubGraphOf(IGraph g, out Dictionary<INode, INode> mapping)

Parameters

Type	Name	Description
IGraph	g	Graph.
System.Collections.Generic.Dictionary<TKey, TValue><INode, INode>	mapping	Mapping of Blank Nodes.

Returns

Type	Description
System.Boolean

IsSubGraphOf(IGraph)

Checks whether this Graph is a sub-graph of the given Graph.

Declaration

public bool IsSubGraphOf(IGraph g)

Parameters

Type	Name	Description
IGraph	g	Graph.

Returns

Type	Description
System.Boolean

Merge(IGraph, bool)

Merges another Graph into the current Graph.

Declaration

public virtual void Merge(IGraph g, bool keepOriginalGraphUri)

Parameters

Type	Name	Description
IGraph	g	Graph to Merge into this Graph.
System.Boolean	keepOriginalGraphUri	Indicates that the Merge should preserve the Graph URIs of Nodes so they refer to the Graph they originated in.

Remarks

The Graph on which you invoke this method will preserve its Blank Node IDs while the Blank Nodes from the Graph being merged in will be given new IDs as required in the scope of this Graph.

The Graph will raise the MergeRequested event before the Merge operation which gives any event handlers the oppurtunity to cancel this event. When the Merge operation is completed the Merged event is raised.

Merge(IGraph)

Merges another Graph into the current Graph.

Declaration

public virtual void Merge(IGraph g)

Parameters

Type	Name	Description
IGraph	g	Graph to Merge into this Graph.

Remarks

The Graph on which you invoke this method will preserve its Blank Node IDs while the Blank Nodes from the Graph being merged in will be given new IDs as required in the scope of this Graph.

OnTripleAsserted(object, TripleEventArgs)

Event Handler which handles the Triple Added event from the underlying Triple Collection by raising the Graph's TripleAsserted event.

Declaration

protected virtual void OnTripleAsserted(object sender, TripleEventArgs args)

Parameters

Type	Name	Description
System.Object	sender	Sender.
TripleEventArgs	args	Triple Event Arguments.

OnTripleRetracted(object, TripleEventArgs)

Event Handler which handles the Triple Removed event from the underlying Triple Collection by raising the Graph's Triple Retracted event.

Declaration

protected virtual void OnTripleRetracted(object sender, TripleEventArgs args)

Parameters

Type	Name	Description
System.Object	sender	Sender.
TripleEventArgs	args	Triple Event Arguments.

RaiseCleared()

Helper method for raising the Cleared event.

Declaration

protected void RaiseCleared()

RaiseClearRequested()

Helper method for raising the Clear Requested event and returning whether any of the Event Handlers cancelled the operation.

Declaration

protected bool RaiseClearRequested()

Returns

Type	Description
System.Boolean	True if the operation can continue, false if it should be aborted.

RaiseGraphChanged()

Helper method for raising the Changed event.

Declaration

protected void RaiseGraphChanged()

RaiseGraphChanged(TripleEventArgs)

Helper method for raising the Changed event.

Declaration

protected void RaiseGraphChanged(TripleEventArgs args)

Parameters

Type	Name	Description
TripleEventArgs	args	Triple Event Arguments.

RaiseMerged()

Helper method for raising the Merged event.

Declaration

protected void RaiseMerged()

RaiseMergeRequested()

Helper method for raising the Merge Requested event and returning whether any of the Event Handlers cancelled the operation.

Declaration

protected bool RaiseMergeRequested()

Returns

Type	Description
System.Boolean	True if the operation can continue, false if it should be aborted.

RaiseTripleAsserted(Triple)

Helper method for raising the Triple Asserted event manually.

Declaration

protected void RaiseTripleAsserted(Triple t)

Parameters

Type	Name	Description
Triple	t	Triple.

RaiseTripleAsserted(TripleEventArgs)

Helper method for raising the Triple Asserted event manually.

Declaration

protected void RaiseTripleAsserted(TripleEventArgs args)

Parameters

Type	Name	Description
TripleEventArgs	args	Triple Event Arguments.

RaiseTripleRetracted(Triple)

Helper method for raising the Triple Retracted event manually.

Declaration

protected void RaiseTripleRetracted(Triple t)

Parameters

Type	Name	Description
Triple	t	Triple.

RaiseTripleRetracted(TripleEventArgs)

Helper method for raising the Triple Retracted event manually.

Declaration

protected void RaiseTripleRetracted(TripleEventArgs args)

Parameters

Type	Name	Description
TripleEventArgs	args

ResolveQName(string)

Helper function for Resolving QNames to URIs.

Declaration

public virtual Uri ResolveQName(string qname)

Parameters

Type	Name	Description
string	qname	QName to resolve to a Uri.

Returns

Type	Description
System.Uri

Retract(IEnumerable<Triple>)

Retracts a enumeration of Triples from the graph.

Declaration

public abstract bool Retract(IEnumerable<Triple> ts)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<T><Triple>	ts	Enumeration of Triples to retract.

Returns

Type	Description
System.Boolean

Retract(Triple)

Retracts a Triple from the Graph.

Declaration

public abstract bool Retract(Triple t)

Parameters

Type	Name	Description
Triple	t	Triple to Retract.

Returns

Type	Description
System.Boolean

Remarks

Current implementation may have some defunct Nodes left in the Graph as only the Triple is retracted.

Unstar()

Converts an graph containing quoted triples into to a graph with no quoted triples by applying the unstar operation described in https://w3c.github.io/rdf-star/cg-spec/2021-12-17.html#mapping.

Declaration

public void Unstar()

Remarks

The unstar operation modifies the graph in-place by calls to Assert(Triple) an Retract(Triple).

Events

Changed

Event which is raised when the Graph contents change

Declaration

public event GraphEventHandler Changed

Event Type

Type	Description
GraphEventHandler

Cleared

Event which is raised after the Graph is cleared of its contents

Declaration

public event GraphEventHandler Cleared

Event Type

Type	Description
GraphEventHandler

ClearRequested

Event which is raised just before the Graph is cleared of its contents

Declaration

public event CancellableGraphEventHandler ClearRequested

Event Type

Type	Description
CancellableGraphEventHandler

Merged

Event which is raised when a Merge operation is completed on the Graph

Declaration

public event GraphEventHandler Merged

Event Type

Type	Description
GraphEventHandler

MergeRequested

Event which is raised when a Merge operation is requested on the Graph

Declaration

public event CancellableGraphEventHandler MergeRequested

Event Type

Type	Description
CancellableGraphEventHandler

TripleAsserted

Event which is raised when a Triple is asserted in the Graph

Declaration

public event TripleEventHandler TripleAsserted

Event Type

Type	Description
TripleEventHandler

TripleRetracted

Event which is raised when a Triple is retracted from the Graph

Declaration

public event TripleEventHandler TripleRetracted

Event Type

Type	Description
TripleEventHandler

Implements

IGraph

INodeFactory

System.IDisposable

ITripleIndex

System.IEquatable<T>

Extension Methods

Extensions.ToSafeString(object)

Extensions.AsEnumerable<T>(T)

GraphExtensions.ToDataTable(IGraph)

DynamicExtensions.AsDynamic(IGraph, Uri, Uri)

Extensions.AddToList(IGraph, INode, IEnumerable<INode>)

Extensions.AddToList<T>(IGraph, INode, IEnumerable<T>, Func<T, INode>)

Extensions.Assert(IGraph, INode, INode, INode)

Extensions.AssertList(IGraph, IEnumerable<INode>)

Extensions.AssertList(IGraph, INode, IEnumerable<INode>)

Extensions.AssertList<T>(IGraph, IEnumerable<T>, Func<T, INode>)

Extensions.AssertList<T>(IGraph, INode, IEnumerable<T>, Func<T, INode>)

Extensions.GetListAsTriples(IGraph, INode)

Extensions.GetListItems(IGraph, INode)

Extensions.GetListNodes(IGraph, INode)

Extensions.RemoveFromList(IGraph, INode, IEnumerable<INode>)

Extensions.RemoveFromList<T>(IGraph, INode, IEnumerable<T>, Func<T, INode>)

Extensions.Retract(IGraph, INode, INode, INode)

Extensions.RetractList(IGraph, INode)

GraphExtensions.GetETag(IGraph)

GraphExtensions.LoadFromEmbeddedResource(IGraph, string, IRdfReader)

GraphExtensions.LoadFromEmbeddedResource(IGraph, string)

GraphExtensions.LoadFromFile(IGraph, string, IRdfReader)

GraphExtensions.LoadFromFile(IGraph, string)

GraphExtensions.LoadFromString(IGraph, string, IRdfReader)

GraphExtensions.LoadFromString(IGraph, string)

GraphExtensions.LoadFromUri(IGraph, Uri, IRdfReader, Loader)

GraphExtensions.LoadFromUri(IGraph, Uri, Loader)

GraphExtensions.SaveToFile(IGraph, string, IRdfWriter)

GraphExtensions.SaveToFile(IGraph, string, IStoreWriter)

GraphExtensions.SaveToFile(IGraph, string)

GraphExtensions.SaveToStream(IGraph, TextWriter, IRdfWriter)

GraphExtensions.SaveToStream(IGraph, TextWriter, IStoreWriter)

GraphExtensions.SaveToStream(IGraph, string, TextWriter)

InMemoryExtensions.ExecuteQuery(IGraph, string)

InMemoryExtensions.ExecuteQuery(IGraph, IRdfHandler, ISparqlResultsHandler, string)

InMemoryExtensions.ExecuteQuery(IGraph, IRdfHandler, ISparqlResultsHandler, SparqlParameterizedString)

InMemoryExtensions.ExecuteQuery(IGraph, IRdfHandler, ISparqlResultsHandler, SparqlQuery)

InMemoryExtensions.ExecuteQuery(IGraph, SparqlParameterizedString)

InMemoryExtensions.ExecuteQuery(IGraph, SparqlQuery)