Class StoreVirtualGraphPersistenceWrapper<TNodeID, TGraphID>

Base class for update operations on virtualized graphs. Implementors have to provide a method to convert standard Nodes to their virtual form according to the IVirtualRdfProvider which is in use.

Inheritance
System.Object
GraphPersistenceWrapper
StoreGraphPersistenceWrapper
StoreVirtualGraphPersistenceWrapper<TNodeID, TGraphID>
Implements
System.IDisposable
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.Storage.Virtualisation
Assembly: dotNetRdf.dll
Syntax
public abstract class StoreVirtualGraphPersistenceWrapper<TNodeID, TGraphID> : StoreGraphPersistenceWrapper, ITransactionalGraph, IGraph, INodeFactory, IDisposable, ITripleIndex, IEquatable<IGraph>
Type Parameters
Name Description
TNodeID

Node ID Type.
TGraphID

Graph ID Type.

Constructors

| Improve this Doc View Source

StoreVirtualGraphPersistenceWrapper(IStorageProvider, IVirtualRdfProvider<TNodeID, TGraphID>, IGraph, bool)

Creates a new Store Graph Persistence Wrapper for Virtualized Nodes.

Declaration
protected StoreVirtualGraphPersistenceWrapper(IStorageProvider manager, IVirtualRdfProvider<TNodeID, TGraphID> provider, IGraph g, bool writeOnly)
Parameters
Type Name Description
IStorageProvider manager

Generic IO Manager.
IVirtualRdfProvider<TNodeID, TGraphID> provider

Virtual RDF Provider.
IGraph g

Graph with virtualized Nodes to wrap.
System.Boolean writeOnly

Whether to operate in write-only mode.
Remarks

Note: In order to operate in write-only mode the IStorageProvider must support triple level updates indicated by it returning true to its UpdateSupported property and the Graph to be wrapped must be an empty Graph.

| Improve this Doc View Source

StoreVirtualGraphPersistenceWrapper(IStorageProvider, IVirtualRdfProvider<TNodeID, TGraphID>, IGraph, Uri, bool)

Creates a new Store Graph Persistence Wrapper for Virtualized Nodes.

Declaration
[Obsolete("Replaced by StoreVirtualGraphPersistenceWrapper(IStorageProvider, IVirtualRdfProvider, IGraph, bool)")]
public StoreVirtualGraphPersistenceWrapper(IStorageProvider manager, IVirtualRdfProvider<TNodeID, TGraphID> provider, IGraph g, Uri graphUri, bool writeOnly)
Parameters
Type Name Description
IStorageProvider manager

Generic IO Manager.
IVirtualRdfProvider<TNodeID, TGraphID> provider

Virtual RDF Provider.
IGraph g

Graph with virtualized Nodes to wrap.
System.Uri graphUri

Graph URI (the URI the Graph will be persisted as).
System.Boolean writeOnly

Whether to operate in write-only mode.
Remarks

Note: In order to operate in write-only mode the IStorageProvider must support triple level updates indicated by it returning true to its UpdateSupported property and the Graph to be wrapped must be an empty Graph.

Fields

| Improve this Doc View Source

_provider

Virtual RDF Provider.

Declaration
protected readonly IVirtualRdfProvider<TNodeID, TGraphID> _provider
Field Value
Type Description
IVirtualRdfProvider<TNodeID, TGraphID>

Methods

| Improve this Doc View Source

Assert(Triple)

Asserts a Triple after virtualization in the Graph.

Declaration
public override bool Assert(Triple t)
Parameters
Type Name Description
Triple t

Triple.
Returns
Type Description
System.Boolean
Overrides
| Improve this Doc View Source

ContainsTriple(Triple)

Gets whether the virtualized form of a given Triple exists in this Graph.

Declaration
public override bool ContainsTriple(Triple t)
Parameters
Type Name Description
Triple t

Triple to test.
Returns
Type Description
System.Boolean

Triple is known to the Graph.
Overrides
| Improve this Doc View Source

CreateVirtual(IVirtualRdfProvider<TNodeID, TGraphID>, INode)

Converts a standard INode to a virtualized node with a pre-materialized value.

Declaration
protected abstract INode CreateVirtual(IVirtualRdfProvider<TNodeID, TGraphID> provider, INode preMaterializedValue)
Parameters
Type Name Description
IVirtualRdfProvider<TNodeID, TGraphID> provider

Virtual RDF Provider, the object, e.g. a storage manger, that provides virtualization of nodes.
INode preMaterializedValue

Node that has to be converted to it's virtualized form with itself as materialized value. Usually a parsed Literal or Uri.
Returns
Type Description
INode
| Improve this Doc View Source

Retract(Triple)

Retracts a Triple after virtualization from the Graph.

Declaration
public override bool Retract(Triple t)
Parameters
Type Name Description
Triple t

Triple.
Returns
Type Description
System.Boolean
Overrides
| Improve this Doc View Source

VirtualizeNode(INode)

Virtualizes a Node.

Declaration
protected INode VirtualizeNode(INode n)
Parameters
Type Name Description
INode n

Node to be virtualized.
Returns
Type Description
INode

The Node in its virtual form. Itself, if it was already virtual.
| Improve this Doc View Source

VirtualizeTriple(Triple)

Converts subject, predicate and object of a given Triple to their respective virtualized forms.

Declaration
protected Triple VirtualizeTriple(Triple t)
Parameters
Type Name Description
Triple t

Triple to virtualize.
Returns
Type Description
Triple

The virtualized Triple. Itself, if it was already virtual.

Implements

System.IDisposable
System.IEquatable<T>

Extension Methods