BaseVirtualNodeTNodeID, TGraphID Class

Abstract Base implementation of a Virtual Node which is a Node that is represented only by some ID until such time as its value actually needs materialising.

Inheritance Hierarchy

SystemObject
  VDS.RDF.Storage.VirtualisationBaseVirtualNodeTNodeID, TGraphID
    VDS.RDF.Storage.VirtualisationBaseVirtualBlankNodeTNodeID, TGraphID
    VDS.RDF.Storage.VirtualisationBaseVirtualGraphLiteralNodeTNodeID, TGraphID
    VDS.RDF.Storage.VirtualisationBaseVirtualLiteralNodeTNodeID, TGraphID
    VDS.RDF.Storage.VirtualisationBaseVirtualUriNodeTNodeID, TGraphID
    VDS.RDF.Storage.VirtualisationBaseVirtualVariableNodeTNodeID, TGraphID

Namespace: VDS.RDF.Storage.Virtualisation
Assembly: dotNetRDF (in dotNetRDF.dll) Version:

Syntax

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public abstract class BaseVirtualNode<TNodeID, TGraphID> : IVirtualNode<TNodeID, TGraphID>, 
	INode, IComparable<INode>, IComparable<IBlankNode>, 
	IComparable<IGraphLiteralNode>, IComparable<ILiteralNode>, IComparable<IUriNode>, 
	IComparable<IVariableNode>, IEquatable<INode>, IEquatable<IBlankNode>, 
	IEquatable<IGraphLiteralNode>, IEquatable<ILiteralNode>, IEquatable<IUriNode>, 
	IEquatable<IVariableNode>, ISerializable, IXmlSerializable, IEquatable<IVirtualNode<TNodeID, TGraphID>>, 
	IComparable<IVirtualNode<TNodeID, TGraphID>>, IVirtualIdComparable, IEquatable<BaseVirtualNode<TNodeID, TGraphID>>, 
	IComparable<BaseVirtualNode<TNodeID, TGraphID>>, ICanCopy

Public MustInherit Class BaseVirtualNode(Of TNodeID, TGraphID)
	Implements IVirtualNode(Of TNodeID, TGraphID), INode, 
	IComparable(Of INode), IComparable(Of IBlankNode), IComparable(Of IGraphLiteralNode), 
	IComparable(Of ILiteralNode), IComparable(Of IUriNode), IComparable(Of IVariableNode), 
	IEquatable(Of INode), IEquatable(Of IBlankNode), IEquatable(Of IGraphLiteralNode), 
	IEquatable(Of ILiteralNode), IEquatable(Of IUriNode), IEquatable(Of IVariableNode), 
	ISerializable, IXmlSerializable, IEquatable(Of IVirtualNode(Of TNodeID, TGraphID)), 
	IComparable(Of IVirtualNode(Of TNodeID, TGraphID)), IVirtualIdComparable, 
	IEquatable(Of BaseVirtualNode(Of TNodeID, TGraphID)), IComparable(Of BaseVirtualNode(Of TNodeID, TGraphID)), 
	ICanCopy

Type Parameters

TNodeID: Node ID Type.
TGraphID: Graph ID Type.

The BaseVirtualNodeTNodeID, TGraphID type exposes the following members.

Constructors

	Name	Description
	BaseVirtualNodeTNodeID, TGraphID(IGraph, NodeType, TNodeID, IVirtualRdfProviderTNodeID, TGraphID)	Creates a new Base Virtual Node.
	BaseVirtualNodeTNodeID, TGraphID(IGraph, NodeType, TNodeID, IVirtualRdfProviderTNodeID, TGraphID, INode)	Creates a new Base Virtual Node.

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Properties

	Name	Description
	Graph	Gets the Graph the Node belongs to.
	GraphUri	Gets/Sets the Graph URI of the Node.
	IsMaterialised	Gets whether the Nodes value has been materialised.
	MaterialisedValue	Gets the materialised value of the Node forcing it to be materialised if it hasn't already.
	NodeType	Gets the Type of the Node.
	Provider	Gets the Virtual RDF Provider of the Node.
	VirtualID	Gets the Virtual ID of the Node.

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Methods

	Name	Description
	CompareTo(BaseVirtualNodeTNodeID, TGraphID)	Compares this Node to another Virtual Node.
	CompareTo(IBlankNode)	Compares this Node to another Blank Node.
	CompareTo(IGraphLiteralNode)	Compares this Node to another Graph LiteralNode.
	CompareTo(ILiteralNode)	Compares this Node to another Literal Node.
	CompareTo(INode)	Compares this Node to another Node.
	CompareTo(IUriNode)	Compares this Node to another URI Node.
	CompareTo(IVariableNode)	Compares this Node to another Variable Node.
	CompareTo(IVirtualNodeTNodeID, TGraphID)	Compares this Node to another Virtual Node.
	CompareVirtualId	Method to be implemented in derived classes to provide comparison of VirtualId values.
	CopyNode	Copies the Virtual Node into another Graph.
	Equals(Object)	Checks this Node for equality against another Object. (Overrides ObjectEquals(Object).)
	Equals(BaseVirtualNodeTNodeID, TGraphID)	Checks this Node for equality against another Virtual Node.
	Equals(IBlankNode)	Checks this Node for equality against another Blank Node.
	Equals(IGraphLiteralNode)	Checks this Node for equality against another Graph Literal Node.
	Equals(ILiteralNode)	Checks this Node for equality against another Literal Node.
	Equals(INode)	Checks this Node for equality against another Node.
	Equals(IUriNode)	Checks this Node for equality against another URI Node.
	Equals(IVariableNode)	Checks this Node for equality against another Variable Node.
	Equals(IVirtualNodeTNodeID, TGraphID)	Checks this Node for equality against another Virtual Node.
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Gets the Hash Code of the Virtual Node. (Overrides ObjectGetHashCode.)
	GetObjectData	Gets the data for serialization.
	GetSchema	Gets the schema for XML serialization.
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MaterialiseValue	Materialises the Value if it is not already materialised.
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	OnMaterialise	Called after the value is materialised for the first time.
	ReadXml	Reads the data for XML deserialization.
	ToString	Gets the String representation of the Node. (Overrides ObjectToString.)
	ToString(INodeFormatter)	Gets the String representation of the Node formatted with the given Node formatter.
	ToString(INodeFormatter, TripleSegment)	Gets the String representation of the Node formatted with the given Node formatter.
	TryCompareVirtualId	Attempt to compare this node with another node.
	TryVirtualEquality	Tries to check for equality using virtual node IDs.
	WriteXml	Writes the data for XML deserialization.

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Fields

	Name	Description
	_value	The materialised value of the Virtual Node.

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Extension Methods

	Name	Description
	AsDynamic	Dynamically wraps a node. (Defined by DynamicExtensions.)
	AsValuedNode	Takes a INode and converts it to a IValuedNode if it is not already an instance that implements the interface. (Defined by ValuedNodeExtensions.)
	CopyNode(IGraph)	Overloaded. Copies a Node to the target Graph. (Defined by Extensions.)
	CopyNode(IGraph, Boolean)	Overloaded. Copies a Node to the target Graph. (Defined by Extensions.)
	IsListRoot	Gets whether a given Node is valid as a List Root, this does not guarantee that the list itself is valid simply that the Node appears to be the root of a list. (Defined by Extensions.)

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Remarks

As far as possible equality checks are carried out using these IDs and limited comparisons may also be done this way. More specific implementations may wish to derive from this class in order to override the default comparison implementation to further reduce the number of places where value materialisation is done.

Note that this class does not implement any of the specialised Node interfaces and instead relies on the casting of its materialised value to an appropriately typed node to provide the true values to code that needs it.

Reference

VDS.RDF.Storage.Virtualisation Namespace

BaseVirtualNodeAddLanguageSpecificTextSet("LSTB2FAEC0A_0?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");TNodeID, TGraphIDAddLanguageSpecificTextSet("LSTB2FAEC0A_1?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)"); Class

Type Parameters

Reference

BaseVirtualNodeTNodeID, TGraphID Class