org.eclipse.rdf4j.rio.helpers

Class RDFStarUtil

java.lang.Object

org.eclipse.rdf4j.rio.helpers.RDFStarUtil

public class RDFStarUtil
extends Object

Utility methods for RDF* triples.

Author:

Pavel Mihaylov

Field Summary

Fields

Modifier and Type	Field and Description
static String	TRIPLE_PREFIX IRI prefix for RDF* triples encoded as IRIs.

Constructor Summary

Constructors

Constructor and Description
RDFStarUtil()

Method Summary

Modifier and Type	Method and Description
static <T extends Value> T	fromRDFEncodedValue(T encodedValue) Converts the supplied value from an RDF-compatible representation to an RDF* value.
static boolean	isEncodedTriple(Value value) Checks if the supplied Value represents an RDF* triple encoded as an IRI.
static <T extends Value> T	toRDFEncodedValue(T value) Converts the supplied value from RDF* to an RDF-compatible representation.

Methods inherited from class java.lang.Object

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

Field Detail

TRIPLE_PREFIX

public static final String TRIPLE_PREFIX

IRI prefix for RDF* triples encoded as IRIs.

See Also:

Constant Field Values

Constructor Detail

RDFStarUtil

public RDFStarUtil()

Method Detail

toRDFEncodedValue

public static <T extends Value> T toRDFEncodedValue(T value)

Converts the supplied value from RDF* to an RDF-compatible representation.

RDF* triples are encoded as IRIs that start with TRIPLE_PREFIX, followed by the base64 encoding of the N-Triples serialization of the triple.

All other RDF* values are valid in RDF as well and remain unchanged.

Type Parameters:

T -

Parameters:

value - a RDF* Value to encode.

Returns:

the RDF-compatible encoded value, if a Triple was supplied, or the supplied value otherwise.

fromRDFEncodedValue

public static <T extends Value> T fromRDFEncodedValue(T encodedValue)

Converts the supplied value from an RDF-compatible representation to an RDF* value.

See toRDFEncodedValue(Value).

Type Parameters:

T -

Parameters:

encodedValue - an RDF Value to convert to RDF*.

Returns:

the decoded RDF* triple, if a Triple encoded as IRI was supplied, or the supplied value otherwise.

Throws:

IllegalArgumentException - if the supplied value looked like an RDF* triple encoded as an IRI but it could not be decoded successfully.

isEncodedTriple

public static boolean isEncodedTriple(Value value)

Checks if the supplied Value represents an RDF* triple encoded as an IRI.

Parameters:

value - the value to check.

Returns:

True if the value is an RDF* triple encoded as an IRI, false otherwise.