knowRDF::Node Class Reference

#include <Node.h>

Public Types
enum class	Type {   Undefined , Uri , BlankNode , Literal ,   Variable }

Public Member Functions
Type	type () const
Literal	literal () const
knowCore::Uri	uri () const
BlankNode	blankNode () const
QString	variable () const
bool	equal (const Node *_otherNode) const
QMultiHash< knowCore::Uri, const Node * >	children () const
QMultiHash< knowCore::Uri, const Node * >	parents () const
bool	belongsToClass (const knowCore::Uri &_class) const
bool	subClassOf (const knowCore::Uri &_class) const
QList< const Node * >	parents (const knowCore::Uri &_predicate) const
QList< const Node * >	children (const knowCore::Uri &_predicate) const
bool	hasChildren (const knowCore::Uri &_predicate) const
bool	hasChildren (const knowCore::UriList &_predicates) const
const Node *	getFirstChild (const knowCore::Uri &_predicate) const
QList< const Node * >	getCollection (const knowCore::Uri &_predicate) const
QList< const Node * >	getCollection () const
bool	isCollection () const

Static Public Member Functions
static Triple	triple (const Node *_subject, const knowCore::Uri &_predicate, const Node *_object)

Friends
class	Graph

Detailed Description

Represent a subject or an object in the graph.

Member Function Documentation

belongsToClass()

bool Node::belongsToClass

(

const knowCore::Uri &

_class

)

const

Returns

true if the node belongs to class _class (i.e. one of the rdf::a child is equal to _class or recursively belongs to the class).

blankNode()

BlankNode Node::blankNode

(

)

const

Returns

a blank node if the node is of type Type::BlankNode otherwise it is invalid

children() [1/2]

QMultiHash< knowCore::Uri, const Node * > Node::children

(

)

const

Returns

all the children and the associated predicate

children() [2/2]

QList< const Node * > Node::children

(

const knowCore::Uri &

_predicate

)

const

Returns

all the children in the graph that are connected with the uri _predicate

equal()

bool Node::equal

(

const Node *

_otherNode

)

const

Returns

if this node is equal to the other node

getCollection() [1/2]

QList< const Node * > Node::getCollection

(

)

const

Returns

the nodes forming a RDF collection starting from that node

getCollection() [2/2]

QList< const Node * > Node::getCollection

(

const knowCore::Uri &

_predicate

)

const

Returns

the nodes forming a RDF collection for the first child pointed by _predicate.

getFirstChild()

const Node * Node::getFirstChild

(

const knowCore::Uri &

_predicate

)

const

Returns

the first child in the graph which is connected by uri _predicate.

hasChildren()

bool Node::hasChildren

(

const knowCore::Uri &

_predicate

)

const

Returns

true if it has a child of uri _predicate

isCollection()

bool Node::isCollection

(

)

const

Returns

if this element is a collection

literal()

Literal Node::literal

(

)

const

Returns

a literal if the node is of type Type::Literal otherwise it is invalid

parents() [1/2]

QMultiHash< knowCore::Uri, const Node * > Node::parents

(

)

const

Returns

all the parents and the associated predicate

parents() [2/2]

QList< const Node * > Node::parents

(

const knowCore::Uri &

_predicate

)

const

Returns

all the parents in the graph that are connected with the uri _predicate

subClassOf()

bool Node::subClassOf

(

const knowCore::Uri &

_class

)

const

Returns

true if the node is a subclass of _class (i.e. one of the rdfs::subClassOf child is equal to _class or recursively belongs to the class).

triple()

Triple Node::triple ( const Node * _subject, const knowCore::Uri & _predicate, const Node * _object )

static

Function that will create a triple reprsentation from a subject and an object defined as a Node.

type()

Node::Type Node::type

(

)

const

Returns

the type of the node

uri()

knowCore::Uri Node::uri

(

)

const

Returns

a uri if the node is of type Type::Uri otherwise it is invalid

variable()

QString Node::variable

(

)

const

Returns

a variable name if the node is of type Type::Variable otherwise it is invalid

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The documentation for this class was generated from the following files:

• knowl/src/knowRDF/Node.h
• kdb/kDB/SPARQL/Algebra/Node.cpp
• knowl/src/knowRDF/Node.cpp