Class InMemoryDataset

Represents an in-memory dataset (i.e. a IInMemoryQueryableStore) for querying and updating using SPARQL.
Inheritance
System.Object
BaseDataset
BaseTransactionalDataset
InMemoryDataset
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: VDS.RDF.Query.Datasets
Assembly: dotNetRDF.dll
Syntax
public class InMemoryDataset : BaseTransactionalDataset, IThreadSafeDataset, ISparqlDataset

Constructors

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InMemoryDataset()

Creates a new in-memory dataset using the default in-memory TripleStore as the underlying storage.
Declaration
public InMemoryDataset()
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InMemoryDataset(Boolean)

Creates a new in-memory dataset using the default in-memory TripleStore as the underlying storage.
Declaration
public InMemoryDataset(bool unionDefaultGraph)
Parameters
Type Name Description
System.Boolean unionDefaultGraph Whether the Default Graph when no Active/Default Graph is explicitly set should be the union of all Graphs in the Dataset.
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InMemoryDataset(IGraph)

Creates a new in-memory dataset containing initially just the given graph and treating the given graph as the default graph of the dataset.
Declaration
public InMemoryDataset(IGraph g)
Parameters
Type Name Description
IGraph g Graph.
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InMemoryDataset(IInMemoryQueryableStore)

Creates a new In-Memory dataset.
Declaration
public InMemoryDataset(IInMemoryQueryableStore store)
Parameters
Type Name Description
IInMemoryQueryableStore store In-Memory queryable store.
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InMemoryDataset(IInMemoryQueryableStore, Boolean)

Creates a new In-Memory dataset.
Declaration
public InMemoryDataset(IInMemoryQueryableStore store, bool unionDefaultGraph)
Parameters
Type Name Description
IInMemoryQueryableStore store In-Memory queryable store.
System.Boolean unionDefaultGraph Whether the Default Graph when no Active/Default Graph is explicitly set should be the union of all Graphs in the Dataset.
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InMemoryDataset(IInMemoryQueryableStore, Uri)

Creates a new In-Memory dataset.
Declaration
public InMemoryDataset(IInMemoryQueryableStore store, Uri defaultGraphUri)
Parameters
Type Name Description
IInMemoryQueryableStore store In-Memory queryable store.
System.Uri defaultGraphUri Default Graph URI.

Properties

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Graphs

Gets all the Graphs in the Dataset.
Declaration
public override IEnumerable<IGraph> Graphs { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<IGraph>
Overrides
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GraphUris

Gets all the URIs of Graphs in the Dataset.
Declaration
public override IEnumerable<Uri> GraphUris { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<System.Uri>
Overrides
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Lock

Gets the Lock used to ensure MRSW concurrency on the dataset when available.
Declaration
public ReaderWriterLockSlim Lock { get; }
Property Value
Type Description
System.Threading.ReaderWriterLockSlim

Methods

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AddGraphInternal(IGraph)

Adds a Graph to the Dataset merging it with any existing Graph with the same URI.
Declaration
protected override bool AddGraphInternal(IGraph g)
Parameters
Type Name Description
IGraph g Graph.
Returns
Type Description
System.Boolean
Overrides
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ContainsTripleInternal(Triple)

Gets whether the Dataset contains a specific Triple.
Declaration
protected override bool ContainsTripleInternal(Triple t)
Parameters
Type Name Description
Triple t Triple.
Returns
Type Description
System.Boolean
Overrides
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FlushInternal()

If there have been changes made to the Dataset and the underlying in-memory store is a ITransactionalStore ensures the underlying store is notified to flush those changes.
Declaration
protected override void FlushInternal()
Overrides
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GetAllTriples()

Gets all the Triples in the underlying in-memory store.
Declaration
protected override IEnumerable<Triple> GetAllTriples()
Returns
Type Description
System.Collections.Generic.IEnumerable<Triple>
Overrides
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GetGraphInternal(Uri)

Gets the Graph with the given URI from the Dataset.
Declaration
protected override IGraph GetGraphInternal(Uri graphUri)
Parameters
Type Name Description
System.Uri graphUri Graph URI.
Returns
Type Description
IGraph
Overrides
Remarks

For In-Memory datasets the Graph returned from this property is no different from the Graph returned by the GetModifiableGraphInternal(Uri) method.

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GetModifiableGraphInternal(Uri)

Gets a Modifiable wrapper around a Graph in the Dataset.
Declaration
protected override ITransactionalGraph GetModifiableGraphInternal(Uri graphUri)
Parameters
Type Name Description
System.Uri graphUri Graph URI.
Returns
Type Description
ITransactionalGraph
Overrides
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GetTriplesWithObjectInternal(INode)

Gets all the Triples in the Dataset with the given Object.
Declaration
protected override IEnumerable<Triple> GetTriplesWithObjectInternal(INode obj)
Parameters
Type Name Description
INode obj Object.
Returns
Type Description
System.Collections.Generic.IEnumerable<Triple>
Overrides
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GetTriplesWithPredicateInternal(INode)

Gets all the Triples in the Dataset with the given Predicate.
Declaration
protected override IEnumerable<Triple> GetTriplesWithPredicateInternal(INode pred)
Parameters
Type Name Description
INode pred Predicate.
Returns
Type Description
System.Collections.Generic.IEnumerable<Triple>
Overrides
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GetTriplesWithPredicateObjectInternal(INode, INode)

Gets all the Triples in the Dataset with the given Predicate and Object.
Declaration
protected override IEnumerable<Triple> GetTriplesWithPredicateObjectInternal(INode pred, INode obj)
Parameters
Type Name Description
INode pred Predicate.
INode obj Object.
Returns
Type Description
System.Collections.Generic.IEnumerable<Triple>
Overrides
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GetTriplesWithSubjectInternal(INode)

Gets all the Triples in the Dataset with the given Subject.
Declaration
protected override IEnumerable<Triple> GetTriplesWithSubjectInternal(INode subj)
Parameters
Type Name Description
INode subj Subject.
Returns
Type Description
System.Collections.Generic.IEnumerable<Triple>
Overrides
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GetTriplesWithSubjectObjectInternal(INode, INode)

Gets all the Triples in the Dataset with the given Subject and Object.
Declaration
protected override IEnumerable<Triple> GetTriplesWithSubjectObjectInternal(INode subj, INode obj)
Parameters
Type Name Description
INode subj Subject.
INode obj Object.
Returns
Type Description
System.Collections.Generic.IEnumerable<Triple>
Overrides
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GetTriplesWithSubjectPredicateInternal(INode, INode)

Gets all the Triples in the Dataset with the given Subject and Predicate.
Declaration
protected override IEnumerable<Triple> GetTriplesWithSubjectPredicateInternal(INode subj, INode pred)
Parameters
Type Name Description
INode subj Subject.
INode pred Predicate.
Returns
Type Description
System.Collections.Generic.IEnumerable<Triple>
Overrides
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HasGraphInternal(Uri)

Gets whether a Graph with the given URI is the Dataset.
Declaration
protected override bool HasGraphInternal(Uri graphUri)
Parameters
Type Name Description
System.Uri graphUri Graph URI.
Returns
Type Description
System.Boolean
Overrides
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RemoveGraphInternal(Uri)

Removes a Graph from the Dataset.
Declaration
protected override bool RemoveGraphInternal(Uri graphUri)
Parameters
Type Name Description
System.Uri graphUri Graph URI.
Returns
Type Description
System.Boolean
Overrides

Implements

Extension Methods