Package org.apache.commons.rdf.api

Class W3CRDFSyntax

java.lang.Object

org.apache.commons.rdf.api.W3CRDFSyntax

All Implemented Interfaces:

RDFSyntax

class W3CRDFSyntax
extends Object
implements RDFSyntax

W3C RDF 1.1 serialization syntax.

This defines the W3C standardized RDF 1.1 syntaxes like TURTLE and JSONLD. Note the existence of other RDF syntaxes that are not included here, e.g. N3 and TriX.

This class is package-protected, its static constants are exposed through RDFSyntax.

See Also:

• RDFSyntax.w3cSyntaxes()
• RDF 1.1 Primer
• RDFParser

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static final class	W3CRDFSyntax.FormatIRI	IRI representing a W3C RDF format.

Field Summary

Fields

Modifier and Type	Field	Description
private final String	fileExtension
private final IRI	iri
(package private) static final RDFSyntax	JSONLD
private final String	mediaType
private final String	name
(package private) static final RDFSyntax	NQUADS
(package private) static final RDFSyntax	NTRIPLES
(package private) static final RDFSyntax	RDFA
(package private) static final RDFSyntax	RDFXML
private final boolean	supportsDataset
(package private) static final Set<RDFSyntax>	syntaxes
private final String	title
(package private) static final RDFSyntax	TRIG
(package private) static final RDFSyntax	TURTLE

Constructor Summary

Constructors

Modifier	Constructor	Description
private	W3CRDFSyntax(String name, String title, String mediaType, String fileExtension, boolean supportsDataset)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)	Compare this RDFSyntax with another object.
String	fileExtension()	The IANA-registered file extension.
int	hashCode()	The hash code of an RDFSyntax is equivalent to the hash code of the RDFSyntax.mediaType() in lower case according to String.toLowerCase(Locale) with the locale Locale.ROOT.
IRI	iri()	Return the IRI that identifies the RDF syntax.
String	mediaType()	The IANA media type for the RDF syntax.
String	name()	A short name of the RDF Syntax e.g.
boolean	supportsDataset()	Indicate if this RDF syntax supports RDF Datasets.
String	title()	The title of the RDF Syntax.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.commons.rdf.api.RDFSyntax

fileExtensions, mediaTypes

Field Details

JSONLD

static final RDFSyntax JSONLD

TURTLE

static final RDFSyntax TURTLE

NQUADS

static final RDFSyntax NQUADS

NTRIPLES

static final RDFSyntax NTRIPLES

RDFA

static final RDFSyntax RDFA

RDFXML

static final RDFSyntax RDFXML

TRIG

static final RDFSyntax TRIG

syntaxes

static final Set<RDFSyntax> syntaxes

title

private final String title

mediaType

private final String mediaType

fileExtension

private final String fileExtension

supportsDataset

private final boolean supportsDataset

name

private final String name

iri

private final IRI iri

Constructor Details

W3CRDFSyntax

private W3CRDFSyntax(String name,
 String title,
 String mediaType,
 String fileExtension,
 boolean supportsDataset)

Method Details

mediaType

public String mediaType()

The IANA media type for the RDF syntax.

The media type can be used as part of Content-Type and Accept for content negotiation in the HTTP protocol.

W3CRDFSyntax always defines media type in lower case, so String.toLowerCase(Locale) need not be called.

Specified by:

mediaType in interface RDFSyntax

Returns:

The registered media type of the RDF Syntax

fileExtension

public String fileExtension()

The IANA-registered file extension.

The file extension includes the leading period, e.g. .jsonld

W3CRDFSyntax always defines file extensions in lower case, so String.toLowerCase(Locale) need not be called.

Specified by:

fileExtension in interface RDFSyntax

Returns:

The registered file extension of the RDF Syntax

supportsDataset

public boolean supportsDataset()

Description copied from interface: RDFSyntax

Indicate if this RDF syntax supports RDF Datasets.

Specified by:

supportsDataset in interface RDFSyntax

Returns:

true if this RDF Syntax supports datasets; false otherwise

title

public String title()

Description copied from interface: RDFSyntax

The title of the RDF Syntax.

This is generally the title of the corresponding standard, e.g. RDF 1.1 Turtle.

Specified by:

title in interface RDFSyntax

Returns:

Title of RDF Syntax

name

public String name()

Description copied from interface: RDFSyntax

A short name of the RDF Syntax e.g. JSONLD.

The name is specific to Commons RDF and carries no particular meaning.

Specified by:

name in interface RDFSyntax

Returns:

Short name for RDF syntax

iri

public IRI iri()

Description copied from interface: RDFSyntax

Return the IRI that identifies the RDF syntax.

Note that the identifying IRI is generally distinct from the IRI of the document that specifies the RDF syntax.

Specified by:

iri in interface RDFSyntax

Returns:

Identifying IRI, e.g. http://www.w3.org/ns/formats/JSON-LD

equals

public boolean equals(Object obj)

Description copied from interface: RDFSyntax

Compare this RDFSyntax with another object.

Two RDFSyntaxes are considered equal if their RDFSyntax.mediaType()s are equal when compared as lower case strings according to String.toLowerCase(Locale) with the locale Locale.ROOT.

Specified by:

equals in interface RDFSyntax

Overrides:

equals in class Object

Parameters:

obj - the object with which to compare

Returns:

true if this object is the same as the obj argument; false otherwise

hashCode

public int hashCode()

Description copied from interface: RDFSyntax

The hash code of an RDFSyntax is equivalent to the hash code of the RDFSyntax.mediaType() in lower case according to String.toLowerCase(Locale) with the locale Locale.ROOT.

Specified by:

hashCode in interface RDFSyntax

Overrides:

hashCode in class Object

Returns:

Hash code of RDFSyntax

toString

public String toString()

Overrides:

toString in class Object