org.semanticweb.vlog4j.rdf

Class RdfModelConverter

java.lang.Object

org.semanticweb.vlog4j.rdf.RdfModelConverter

public final class RdfModelConverter
extends Object

Class for converting RDF Models to PositiveLiteral sets. Converts each <subject, predicate, object> triple statement of the given rdfModel into an PositiveLiteral of the form TRIPLE(subject, predicate, object). The ternary predicate used for all literals generated from RDF triples is RDF_TRIPLE_PREDICATE. Subject, predicate and object Values are converted to corresponding Terms:

• URIs are converted to Constants with the escaped URI String as name.
• Literals are converted to Constants with names containing the canonical form of the literal label, the data type and the language.
• BNodes are converted to Blanks with the generated blank ID as name. BNodes have unique generated IDs in the context a Models. Blanks with the same name loaded from different models will have different ids.

Author:

Irina Dragoste

Field Summary

Fields

Modifier and Type	Field and Description
static org.semanticweb.vlog4j.core.model.api.Predicate	RDF_TRIPLE_PREDICATE The ternary predicate of literals generated from RDF triples.
static String	RDF_TRIPLE_PREDICATE_NAME The name of the ternary predicate of literals generated from RDF triples: "TRIPLE".

Method Summary

Modifier and Type	Method and Description
static Set<org.semanticweb.vlog4j.core.model.api.Fact>	rdfModelToFacts(org.openrdf.model.Model rdfModel) Converts each <subject, predicate, object> triple statement of the given rdfModel into a PositiveLiteral of the form TRIPLE(subject, predicate, object).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

RDF_TRIPLE_PREDICATE_NAME

public static final String RDF_TRIPLE_PREDICATE_NAME

The name of the ternary predicate of literals generated from RDF triples: "TRIPLE".

See Also:

Constant Field Values

RDF_TRIPLE_PREDICATE

public static final org.semanticweb.vlog4j.core.model.api.Predicate RDF_TRIPLE_PREDICATE

The ternary predicate of literals generated from RDF triples. It has name(Predicate.getName()) "TRIPLE" and arity(Predicate.getArity()) 3.

Method Detail

rdfModelToFacts

public static Set<org.semanticweb.vlog4j.core.model.api.Fact> rdfModelToFacts(org.openrdf.model.Model rdfModel)

Converts each <subject, predicate, object> triple statement of the given rdfModel into a PositiveLiteral of the form TRIPLE(subject, predicate, object). See RDF_TRIPLE_PREDICATE, the ternary predicate used for all literals generated from RDF triples.

Parameters:

rdfModel - a Model of an RDF document, containing triple statements that will be converter to facts.

Returns:

a set of literals corresponding to the statements of given rdfModel.