rdf_api::Resource Interface Reference

A resource in RDF. More...

Inheritance diagram for rdf_api::Resource:

Collaboration diagram for rdf_api::Resource:

Public Member Functions
TripleSet	getTriplesOutOfByPredicate (in Resource aPredicate)
	Finds all the triples for which this node is the subject and the parameter is the predicate.
Triple	getTripleOutOfByPredicate (in Resource aPredicate) raises (RDFProcessingError)
	Finds a triple for which this node is the subject and the parameter is the predicate if possible.
boolean	hasTripleOutOf (in Resource aPredicate, in Node aObject)
	Determines if there is a triple where this node is the subject, and aPredicate is the predicate and aObject is the object.
void	createTripleOutOf (in Resource aPredicate, in Node aObject)
	Creates a triple where this node is the subject, and aPredicate is the predicate and aObject is the object.
TripleSet	getTriplesOutOfByObject (in Node aObject)
	Finds all the triples for which this node is the subject and the parameter is the object.
TripleSet	getTriplesWherePredicate ()
	Finds all the triples for which this node is the predicate.
TripleSet	getTriplesWhereSubject ()
	Finds all the triples for which this node is the subject.
Container	findOrMakeContainer (in Resource aPredicate, in Resource aContainerType)
	Finds or makes a particular container out of 'this', with the specified predicate, and the specified type.
Public Member Functions inherited from rdf_api::Node
TripleSet	getTriplesInto ()
	Finds all the triples for which this node is the object.
TripleSet	getTriplesIntoByPredicate (in Resource aPredicate)
	Fetches all triples for which this node is the object and aPredicate is the predicate.
Public Member Functions inherited from XPCOM::IObject
void	add_ref ()
	Called to indicate that some code is keeping an owning reference to the object.
oneway void	release_ref ()
	Removes a reference to an object which was created by some other means (e.g.
IObject	query_interface (in utf8string id)
	Returns an IObject of the same implementation, which supports a specific interface.

Public Attributes
readonly attribute Container	correspondingContainer
	Retrieves a 'Container' interface around this Resource.

Detailed Description

A resource in RDF.

This is always associated with a specific datasource.

Definition at line 102 of file RDF_APISPEC.idl.

Member Function Documentation

void rdf_api::Resource::createTripleOutOf	(	in Resource	aPredicate,
		in Node	aObject
	)

Creates a triple where this node is the subject, and aPredicate is the predicate and aObject is the object.

If the triple being asserted has already been asserted, then nothing happens.

Parameters

aPredicate	The predicate for the new triple.
aObject	The object for the new triple.

Container rdf_api::Resource::findOrMakeContainer	(	in Resource	aPredicate,
		in Resource	aContainerType
	)

Finds or makes a particular container out of 'this', with the specified predicate, and the specified type.

If there are multiple existing containers, the returned container is a merged view of all containers. The underlying RDF is only changed if the container doesn't already exist, in which case: A new triple (subject=this) (predicate=aPredicate) (object=new blank node 'A') is made. A new triple (subject=the new blank node 'A') (predicate=RDF type) (object=aContainerType) is made. The returned Container is the correspondingContainer around the new blank node 'A'.

Triple rdf_api::Resource::getTripleOutOfByPredicate

(

in Resource

aPredicate

)

raises (RDFProcessingError)

Finds a triple for which this node is the subject and the parameter is the predicate if possible.

Parameters

aPredicate

The predicate we are searching on.

Returns

A triple meeting the constraints. RDFProcessingError if there was no matching triple found.

TripleSet rdf_api::Resource::getTriplesOutOfByObject

(

in Node

aObject

)

Finds all the triples for which this node is the subject and the parameter is the object.

Parameters

aObject

The object we are searching on.

Returns

The set of all triples meeting the constraints.

TripleSet rdf_api::Resource::getTriplesOutOfByPredicate

(

in Resource

aPredicate

)

Finds all the triples for which this node is the subject and the parameter is the predicate.

Parameters

aPredicate

The predicate we are searching on.

Returns

The set of all triples meeting the constraints.

TripleSet rdf_api::Resource::getTriplesWherePredicate

(

)

Finds all the triples for which this node is the predicate.

Returns

The set of all triples meeting the constraints.

TripleSet rdf_api::Resource::getTriplesWhereSubject

(

)

Finds all the triples for which this node is the subject.

Returns

The set of all triples meeting the constraints.

boolean rdf_api::Resource::hasTripleOutOf	(	in Resource	aPredicate,
		in Node	aObject
	)

Determines if there is a triple where this node is the subject, and aPredicate is the predicate and aObject is the object.

Parameters

aPredicate	The predicate to search for.
aObject	The object to search for.

Returns

True if and only if there is a matching triple.

Member Data Documentation

readonly attribute Container rdf_api::Resource::correspondingContainer

Retrieves a 'Container' interface around this Resource.

Definition at line 165 of file RDF_APISPEC.idl.