Class UnionTripleCollection

Represents a union of multiple Triple Collections.
Inheritance
System.Object
BaseTripleCollection
UnionTripleCollection
Implements
System.Collections.Generic.IEnumerable<Triple>
System.Collections.IEnumerable
System.IDisposable
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
Assembly: dotNetRDF.dll
Syntax
public class UnionTripleCollection : BaseTripleCollection, IEnumerable<Triple>, IEnumerable, IDisposable
Remarks

The union consists of a Base collection which is the collection that Triples can actually be added to and deleted from and any number of additional collections which are read-only as far as the union is concerned (this does not mean they cannot be altered elsewhere by other code).

Constructors

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UnionTripleCollection(BaseTripleCollection, IEnumerable<BaseTripleCollection>)

Creates a new Union Triple Collection which is a union of any number of collections.
Declaration
public UnionTripleCollection(BaseTripleCollection baseTriples, IEnumerable<BaseTripleCollection> additionalTriples)
Parameters
Type Name Description
BaseTripleCollection baseTriples Base Triple Collection.
System.Collections.Generic.IEnumerable<BaseTripleCollection> additionalTriples Additional Triple Collection(s).
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UnionTripleCollection(BaseTripleCollection, BaseTripleCollection)

Creates a new Union Triple Collection which is a union of two collections.
Declaration
public UnionTripleCollection(BaseTripleCollection baseTriples, BaseTripleCollection additionalTriples)
Parameters
Type Name Description
BaseTripleCollection baseTriples Base Triple Collection.
BaseTripleCollection additionalTriples Additional Triple Collection.

Properties

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Count

Gets the count of Triples in this union.
Declaration
public override int Count { get; }
Property Value
Type Description
System.Int32
Overrides
Remarks
The Count is the total number of Triples, this may be different from the number of distinct triples.
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Item[Triple]

Retrieves a Triple from the union.
Declaration
public override Triple this[Triple t] { get; }
Parameters
Type Name Description
Triple t Triple to retrieve.
Property Value
Type Description
Triple
Overrides
Exceptions
Type Condition
System.Collections.Generic.KeyNotFoundException Thrown if the Triple is not contained in any of the collections this union comprises.
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ObjectNodes

Gets the enumeration of distinct objects of Triples.
Declaration
public override IEnumerable<INode> ObjectNodes { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<INode>
Overrides
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PredicateNodes

Gets the enumeration of distinct predicates of Triples.
Declaration
public override IEnumerable<INode> PredicateNodes { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<INode>
Overrides
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SubjectNodes

Gets the enumeration of distinct subjects of Triples.
Declaration
public override IEnumerable<INode> SubjectNodes { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<INode>
Overrides

Methods

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Add(Triple)

Adds a Triple to the base collection.
Declaration
protected override bool Add(Triple t)
Parameters
Type Name Description
Triple t Triple to add.
Returns
Type Description
System.Boolean
Overrides
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Contains(Triple)

Checks whether the union contains this Triple in any of the collections it comprises.
Declaration
public override bool Contains(Triple t)
Parameters
Type Name Description
Triple t Triple to test.
Returns
Type Description
System.Boolean
Overrides
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Delete(Triple)

Deletes a Triple from the base collection.
Declaration
protected override bool Delete(Triple t)
Parameters
Type Name Description
Triple t Triple to delete.
Returns
Type Description
System.Boolean
Overrides
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Dispose()

Disposes of the collection.
Declaration
public override void Dispose()
Overrides
Remarks
This does nothing since we don't know where and how the collections we are the union of are being used and therefore to dispose of them could have unwanted/unexpected results.
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GetEnumerator()

Gets the enumeration of Triples in the union.
Declaration
public override IEnumerator<Triple> GetEnumerator()
Returns
Type Description
System.Collections.Generic.IEnumerator<Triple>
Overrides

Implements

System.Collections.Generic.IEnumerable<T>
System.Collections.IEnumerable
System.IDisposable

Extension Methods