Class BaseTripleCollection

Abstract Base Class for Triple Collections.

Inheritance

object

BaseTripleCollection

AbstractIndexedTripleCollection

QuadDatasetTripleCollection

TripleCollection

UnionTripleCollection

WrapperTripleCollection

Implements

IEnumerable<Triple>

IEnumerable

IDisposable

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 BaseTripleCollection : IEnumerable<Triple>, IEnumerable, IDisposable

Remarks

Designed to allow the underlying storage of a Triple Collection to be changed at a later date without affecting classes that use it.

Properties

Asserted

Gets the triples that are asserted in the collection.

Declaration

public abstract IEnumerable<Triple> Asserted { get; }

Property Value

Type	Description
IEnumerable<Triple>

Remarks

This returns the same set of triples as the enumerator on this class, but as an IEnumerable<T> instance.

Count

Gets the number of asserted triples in the triple collection.

Declaration

public abstract int Count { get; }

Property Value

Type	Description
int

this[(INode s, INode p, INode o)]

Gets the triples that match the provided pattern.

Declaration

public virtual IEnumerable<Triple> this[(INode s, INode p, INode o) pattern] { get; }

Parameters

Type	Name	Description
(INode s, INode p, INode o)	pattern	A tuple of subject, predicate and object node. Each item in the tuple is nullable, with a null value indicating a wildcard for matching in that position.

Property Value

Type	Description
IEnumerable<Triple>

this[Triple]

Gets the given triple.

Declaration

public abstract Triple this[Triple t] { get; }

Parameters

Type	Name	Description
Triple	t	Triple to retrieve.

Property Value

Type	Description
Triple

Exceptions

Type	Condition
KeyNotFoundException	Thrown if the given Triple doesn't exist.

ObjectNodes

Gets all the nodes which are objects of asserted triples in the triple collection.

Declaration

public abstract IEnumerable<INode> ObjectNodes { get; }

Property Value

Type	Description
IEnumerable<INode>

PredicateNodes

Gets all the nodes which are predicates of asserted triples in the triple collection.

Declaration

public abstract IEnumerable<INode> PredicateNodes { get; }

Property Value

Type	Description
IEnumerable<INode>

Quoted

Gets the triples that are quoted in the collection.

Declaration

public abstract IEnumerable<Triple> Quoted { get; }

Property Value

Type	Description
IEnumerable<Triple>

QuotedCount

Gets the number of quoted triples in the triple collection.

Declaration

public abstract int QuotedCount { get; }

Property Value

Type	Description
int

QuotedObjectNodes

Gets all the nodes which are subjects of quoted triples in the triple collection.

Declaration

public abstract IEnumerable<INode> QuotedObjectNodes { get; }

Property Value

Type	Description
IEnumerable<INode>

QuotedPredicateNodes

Gets all the nodes which are predicates of quoted triples in the triple collection.

Declaration

public abstract IEnumerable<INode> QuotedPredicateNodes { get; }

Property Value

Type	Description
IEnumerable<INode>

QuotedSubjectNodes

Gets all the nodes which are objects of quoted triples in the triple collection.

Declaration

public abstract IEnumerable<INode> QuotedSubjectNodes { get; }

Property Value

Type	Description
IEnumerable<INode>

SubjectNodes

Gets all the nodes which are subjects of asserted triples in the triple collection.

Declaration

public abstract IEnumerable<INode> SubjectNodes { get; }

Property Value

Type	Description
IEnumerable<INode>

Methods

Add(Triple)

Adds a Triple to the Collection.

Declaration

protected abstract bool Add(Triple t)

Parameters

Type	Name	Description
Triple	t	Triple to add.

Returns

Type	Description
bool

Remarks

Adding a Triple that already exists should be permitted though it is not necessary to persist the duplicate to underlying storage.

Contains(Triple)

Determines whether a given Triple is asserted in the Triple Collection.

Declaration

public abstract bool Contains(Triple t)

Parameters

Type	Name	Description
Triple	t	The Triple to test.

Returns

Type	Description
bool	True if the triple exists as an asserted triple in the collection.

ContainsQuoted(Triple)

Determines whether a given triple is quoted by a triple node of a triple in the collection.

Declaration

public abstract bool ContainsQuoted(Triple t)

Parameters

Type	Name	Description
Triple	t	The triple to test.

Returns

Type	Description
bool	True if the triple is quoted in the triple collection, false otherwise.

Delete(Triple)

Deletes an asserted triple from the collection.

Declaration

protected abstract bool Delete(Triple t)

Parameters

Type	Name	Description
Triple	t	Triple to remove.

Returns

Type	Description
bool	True if the operation removed an asserted triple from the collection, false otherwise.

Remarks

Deleting a triple that is not asserted in the collection should have no effect and give no error. Quoted triples cannot be removed from the collection via this method - instead they should be automatically removed when all asserted triples that reference them are removed. Deleting a triple that is both asserted and quoted will remove the assertion of the triple (and return true), but the triple will remain in the collection as a quoted triples.

Dispose()

Disposes of a Triple Collection.

Declaration

public abstract void Dispose()

GetEnumerator()

Gets the typed Enumerator for the Triple Collection.

Declaration

public abstract IEnumerator<Triple> GetEnumerator()

Returns

Type	Description
IEnumerator<Triple>	An enumerator over the asserted triples in the triple collection.

QuotedWithObject(INode)

Gets all the quoted triples with the given Object.

Declaration

public virtual IEnumerable<Triple> QuotedWithObject(INode obj)

Parameters

Type	Name	Description
INode	obj	Object to lookup.

Returns

Type	Description
IEnumerable<Triple>

QuotedWithPredicate(INode)

Gets all the quoted triples with the given Predicate.

Declaration

public virtual IEnumerable<Triple> QuotedWithPredicate(INode pred)

Parameters

Type	Name	Description
INode	pred	Predicate to lookup.

Returns

Type	Description
IEnumerable<Triple>

QuotedWithPredicateObject(INode, INode)

Gets all the quoted triples with the given Predicate Object pair.

Declaration

public virtual IEnumerable<Triple> QuotedWithPredicateObject(INode pred, INode obj)

Parameters

Type	Name	Description
INode	pred	Predicate to lookup.
INode	obj	Object to lookup.

Returns

Type	Description
IEnumerable<Triple>

QuotedWithSubject(INode)

Gets all quoted triples with the given subject.

Declaration

public virtual IEnumerable<Triple> QuotedWithSubject(INode subj)

Parameters

Type	Name	Description
INode	subj	Subject to lookup.

Returns

Type	Description
IEnumerable<Triple>

QuotedWithSubjectObject(INode, INode)

Gets all the quoted triples with the given Subject Object pair.

Declaration

public virtual IEnumerable<Triple> QuotedWithSubjectObject(INode subj, INode obj)

Parameters

Type	Name	Description
INode	subj	Subject to lookup.
INode	obj	Object to lookup.

Returns

Type	Description
IEnumerable<Triple>

QuotedWithSubjectPredicate(INode, INode)

Gets all the quoted triples with the given Subject Predicate pair.

Declaration

public virtual IEnumerable<Triple> QuotedWithSubjectPredicate(INode subj, INode pred)

Parameters

Type	Name	Description
INode	subj	Subject to lookup.
INode	pred	Predicate to lookup.

Returns

Type	Description
IEnumerable<Triple>

RaiseTripleAdded(Triple)

Helper method for raising the Triple Added event.

Declaration

protected void RaiseTripleAdded(Triple t)

Parameters

Type	Name	Description
Triple	t	Triple.

RaiseTripleRemoved(Triple)

Helper method for raising the Triple Removed event.

Declaration

protected void RaiseTripleRemoved(Triple t)

Parameters

Type	Name	Description
Triple	t	Triple.

WithObject(INode)

Gets all the asserted triples with the given object.

Declaration

public virtual IEnumerable<Triple> WithObject(INode obj)

Parameters

Type	Name	Description
INode	obj	Object to lookup.

Returns

Type	Description
IEnumerable<Triple>

WithPredicate(INode)

Gets all the asserted triples with the given predicate.

Declaration

public virtual IEnumerable<Triple> WithPredicate(INode pred)

Parameters

Type	Name	Description
INode	pred	Predicate to lookup.

Returns

Type	Description
IEnumerable<Triple>

WithPredicateObject(INode, INode)

Gets all the Triples with the given Predicate Object pair.

Declaration

public virtual IEnumerable<Triple> WithPredicateObject(INode pred, INode obj)

Parameters

Type	Name	Description
INode	pred	Predicate to lookup.
INode	obj	Object to lookup.

Returns

Type	Description
IEnumerable<Triple>

WithSubject(INode)

Gets all the asserted triples with the given subject.

Declaration

public virtual IEnumerable<Triple> WithSubject(INode subj)

Parameters

Type	Name	Description
INode	subj	Subject to lookup.

Returns

Type	Description
IEnumerable<Triple>

WithSubjectObject(INode, INode)

Gets all the Triples with the given Subject Object pair.

Declaration

public virtual IEnumerable<Triple> WithSubjectObject(INode subj, INode obj)

Parameters

Type	Name	Description
INode	subj	Subject to lookup.
INode	obj	Object to lookup.

Returns

Type	Description
IEnumerable<Triple>

WithSubjectPredicate(INode, INode)

Gets all the asserted triples with the given subject/predicate pair.

Declaration

public virtual IEnumerable<Triple> WithSubjectPredicate(INode subj, INode pred)

Parameters

Type	Name	Description
INode	subj	Subject to lookup.
INode	pred	Predicate to lookup.

Returns

Type	Description
IEnumerable<Triple>

Events

TripleAdded

Event which occurs when a triple is added to the collection as an asserted triple.

Declaration

public event TripleEventHandler TripleAdded

Event Type

Type	Description
TripleEventHandler

TripleRemoved

Event which occurs when a triple is un-asserted from the collection.

Declaration

public event TripleEventHandler TripleRemoved

Event Type

Type	Description
TripleEventHandler

Implements

IEnumerable<T>

IEnumerable

IDisposable

Extension Methods

Extensions.ChunkBy<T>(IEnumerable<T>, int)

Extensions.IsDisjoint<T>(IEnumerable<T>, IEnumerable<T>)

Extensions.WithObject(IEnumerable<Triple>, INode)

Extensions.WithPredicate(IEnumerable<Triple>, INode)

Extensions.WithSubject(IEnumerable<Triple>, INode)

LiteralExtensions.ToTripleCollection(IEnumerable<Triple>, bool)

Extensions.ToSafeString(object)

Extensions.AsEnumerable<T>(T)