org.apache.jena.riot
Class RDFLanguages

java.lang.Object
  org.apache.jena.riot.RDFLanguages

public class RDFLanguages
extends Object

Central registry of RDF languages and syntaxes.

See Also:

RDFParserRegistry, RDFFormat

Field Summary

static Lang	CSV CSV - CSV data read into an RDF model with simple conversion : See Jena-625
static Lang	JSONLD JSON-LD.
static Lang	N3 N3 (treat as Turtle)
static Lang	NQ Alternative constant NQUADS
static Lang	NQUADS N-Quads
static Lang	NT Alternative constant for NTRIPLES
static Lang	NTRIPLES N-Triples
static Lang	RDFJSON RDF/JSON.
static Lang	RDFNULL The "null" language
static Lang	RDFXML RDF/XML
static String	strLangCSV
static String	strLangJSONLD
static String	strLangN3
static String	strLangNQuads
static String	strLangNTriples
static String	strLangRDFJSON
static String	strLangRDFXML
static String	strLangTriG
static String	strLangTurtle
static Lang	TRIG TriG
static Lang	TTL Alternative constant for TURTLE
static Lang	TURTLE Turtle

Constructor Summary

RDFLanguages()

Method Summary

static Lang	contentTypeToLang(ContentType ct) Map a content type (without charset) to a Lang
static Lang	contentTypeToLang(String contentType) Map a content type (without charset) to a Lang
static Lang	fileExtToLang(String ext) Try to map a file extension to a Lang; return null on no registered mapping
static Lang	filenameToLang(String filename) Try to map a file name to a Lang; return null on no registered mapping
static Lang	filenameToLang(String filename, Lang dftLang) Try to map a file name to a Lang; return the given default where there is no registered mapping
static String	getCharsetForContentType(String contentType)
static Collection<Lang>	getRegisteredLanguages()
static ContentType	guessContentType(String resourceName)
static void	init()
static boolean	isQuads(Lang lang) return true if the language is registered as a quads language
static boolean	isRegistered(Lang lang)
static boolean	isTriples(Lang lang) return true if the language is registered as a triples language
static Lang	nameToLang(String langName) Turn a name for a language into a Lang object.
static void	register(Lang lang) Register a language.
static Lang	resourceNameToLang(String resourceName) Try to map a resource name to a Lang; return null on no registered mapping
static Lang	resourceNameToLang(String resourceName, Lang dftLang) Try to map a resource name to a Lang; return the given default where there is no registered mapping
static boolean	sameLang(Lang lang1, Lang lang2)
static Lang	shortnameToLang(String label) Map a colloquial name (e.g.
static void	unregister(Lang lang) Remove a regsitration of a language - this also removes all recorded mapping of content types and file extensions.

Methods inherited from class java.lang.Object

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

Field Detail

strLangRDFXML

public static final String strLangRDFXML

See Also:

Constant Field Values

strLangTurtle

public static final String strLangTurtle

See Also:

Constant Field Values

strLangNTriples

public static final String strLangNTriples

See Also:

Constant Field Values

strLangN3

public static final String strLangN3

See Also:

Constant Field Values

strLangRDFJSON

public static final String strLangRDFJSON

See Also:

Constant Field Values

strLangJSONLD

public static final String strLangJSONLD

See Also:

Constant Field Values

strLangNQuads

public static final String strLangNQuads

See Also:

Constant Field Values

strLangTriG

public static final String strLangTriG

See Also:

Constant Field Values

strLangCSV

public static final String strLangCSV

See Also:

Constant Field Values

RDFXML

public static final Lang RDFXML

RDF/XML

TURTLE

public static final Lang TURTLE

Turtle

TTL

public static final Lang TTL

Alternative constant for TURTLE

N3

public static final Lang N3

N3 (treat as Turtle)

NTRIPLES

public static final Lang NTRIPLES

N-Triples

NT

public static final Lang NT

Alternative constant for NTRIPLES

JSONLD

public static final Lang JSONLD

JSON-LD.

RDFJSON

public static final Lang RDFJSON

RDF/JSON. This is not JSON-LD.

TRIG

public static final Lang TRIG

TriG

NQUADS

public static final Lang NQUADS

N-Quads

NQ

public static final Lang NQ

Alternative constant NQUADS

CSV

public static final Lang CSV

CSV - CSV data read into an RDF model with simple conversion : See Jena-625

RDFNULL

public static final Lang RDFNULL

The "null" language

Constructor Detail

RDFLanguages

public RDFLanguages()

Method Detail

getRegisteredLanguages

public static Collection<Lang> getRegisteredLanguages()

init

public static void init()

register

public static void register(Lang lang)

Register a language. To create a Lang object use LangBuilder. See also RDFParserRegistry.registerLang(org.apache.jena.riot.Lang, org.apache.jena.riot.ReaderRIOTFactory) for registering a language and it's RDF parser fatory.

See Also:

RDFParserRegistry

unregister

public static void unregister(Lang lang)

Remove a regsitration of a language - this also removes all recorded mapping of content types and file extensions.

isRegistered

public static boolean isRegistered(Lang lang)

isTriples

public static boolean isTriples(Lang lang)

return true if the language is registered as a triples language

isQuads

public static boolean isQuads(Lang lang)

return true if the language is registered as a quads language

contentTypeToLang

public static Lang contentTypeToLang(String contentType)

Map a content type (without charset) to a Lang

contentTypeToLang

public static Lang contentTypeToLang(ContentType ct)

Map a content type (without charset) to a Lang

getCharsetForContentType

public static String getCharsetForContentType(String contentType)

shortnameToLang

public static Lang shortnameToLang(String label)

Map a colloquial name (e.g. "Turtle") to a Lang

fileExtToLang

public static Lang fileExtToLang(String ext)

Try to map a file extension to a Lang; return null on no registered mapping

resourceNameToLang

public static Lang resourceNameToLang(String resourceName)

Try to map a resource name to a Lang; return null on no registered mapping

resourceNameToLang

public static Lang resourceNameToLang(String resourceName,
                                      Lang dftLang)

Try to map a resource name to a Lang; return the given default where there is no registered mapping

filenameToLang

public static Lang filenameToLang(String filename)

Try to map a file name to a Lang; return null on no registered mapping

filenameToLang

public static Lang filenameToLang(String filename,
                                  Lang dftLang)

Try to map a file name to a Lang; return the given default where there is no registered mapping

nameToLang

public static Lang nameToLang(String langName)

Turn a name for a language into a Lang object. The name can be a label, or a content type.

guessContentType

public static ContentType guessContentType(String resourceName)

sameLang

public static boolean sameLang(Lang lang1,
                               Lang lang2)