Example usage for org.apache.commons.rdf.api Literal getLanguageTag

Introduction

In this page you can find the example usage for org.apache.commons.rdf.api Literal getLanguageTag.

Prototype

Optional<String> getLanguageTag();

Source Link

Document

If and only if the datatype IRI is <a href="http://www.w3.org/1999/02/22-rdf-syntax-ns#langString" >http://www.w3.org/1999/02/22-rdf-syntax-ns#langString</a>, the language tag for this Literal is a non-empty language tag as defined by <a href="http://tools.ietf.org/html/bcp47">BCP47</a>.<br> If the datatype IRI is not <a href="http://www.w3.org/1999/02/22-rdf-syntax-ns#langString" >http://www.w3.org/1999/02/22-rdf-syntax-ns#langString</a>, this method must return Optional#empty() .

Usage

From source file:example.UserGuideTest.java

@Test
public void literal() throws Exception {
    Literal literal = factory.createLiteral("Hello world!");
    System.out.println(literal.ntriplesString());

    String lexical = literal.getLexicalForm();
    System.out.println(lexical);//from   w  ww. j  a v  a2  s  .c o m

    IRI datatype = literal.getDatatype();
    System.out.println(datatype.ntriplesString());

    IRI xsdDouble = factory.createIRI("http://www.w3.org/2001/XMLSchema#double");
    Literal literalDouble = factory.createLiteral("13.37", xsdDouble);
    System.out.println(literalDouble.ntriplesString());

    Literal literalDouble2 = factory.createLiteral("13.37", Types.XSD_DOUBLE);

    System.out.println(literal.getDatatype().equals(Types.XSD_STRING));

    Literal inSpanish = factory.createLiteral("Hola, Mundo!", "es");
    System.out.println(inSpanish.ntriplesString());
    System.out.println(inSpanish.getLexicalForm());
    System.out.println(inSpanish.getDatatype().ntriplesString());

    Optional<String> tag = inSpanish.getLanguageTag();
    if (tag.isPresent()) {
        System.out.println(tag.get());
    }

    System.out.println(literal.getLanguageTag().isPresent());
    System.out.println(literalDouble.getLanguageTag().isPresent());
}

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From source file:org.apache.jena.commonsrdf.impl.JCR_Literal.java

@Override
public boolean equals(Object other) {
    if (other == this)
        return true;
    if (other == null)
        return false;
    if (!(other instanceof Literal))
        return false;
    Literal literal = (Literal) other;
    return getLexicalForm().equals(literal.getLexicalForm())
            && getLanguageTag().equals(literal.getLanguageTag()) && getDatatype().equals(literal.getDatatype());
}

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From source file:org.apache.jena.commonsrdf.JenaCommonsRDF.java

/** Convert a CommonsRDF RDFTerm to a Jena Node.
 * If the RDFTerm was from Jena originally, return that original object else
 * create a copy using Jena objects. // ww  w  .j  a  va 2s  . c o m
 */
public static Node toJena(RDFTerm term) {
    if (term instanceof JenaNode)
        return ((JenaNode) term).getNode();

    if (term instanceof IRI)
        return NodeFactory.createURI(((IRI) term).getIRIString());

    if (term instanceof Literal) {
        Literal lit = (Literal) term;
        RDFDatatype dt = NodeFactory.getType(lit.getDatatype().getIRIString());
        String lang = lit.getLanguageTag().orElse("");
        return NodeFactory.createLiteral(lit.getLexicalForm(), lang, dt);
    }

    if (term instanceof BlankNode) {
        String id = ((BlankNode) term).uniqueReference();
        return NodeFactory.createBlankNode(id);
    }
    conversionError("Not a concrete RDF Term: " + term);
    return null;
}

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From source file:org.semanticweb.owlapi.io.RDFLiteral.java

@Override
public boolean equals(@Nullable Object obj) {
    if (obj == this) {
        return true;
    }/*w  ww. j a  va  2 s  .  c  om*/
    if (obj instanceof RDFLiteral) {
        RDFLiteral other = (RDFLiteral) obj;
        if (!lexicalValue.equals(other.lexicalValue)) {
            return false;
        }
        if (!lang.equals(other.lang)) {
            return false;
        }
        return datatype.equals(other.datatype);
    }
    if (obj instanceof Literal) {
        // Note: This also works on RDFLiteral
        // but is slightly more expensive as it must call the
        // getter methods when accessing obj.
        //
        // To ensure future compatibility, the Commons RDF getter
        // methods are also called on this rather than using the fields.
        Literal literal = (Literal) obj;
        if (!getLexicalForm().equals(((Literal) obj).getLexicalForm())) {
            return false;
        }
        if (!getLanguageTag().equals(literal.getLanguageTag())) {
            return false;
        }
        return getDatatype().equals(literal.getDatatype());
    }
    return false;
}

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From source file:org.semanticweb.owlapi6.io.RDFLiteral.java

@Override
public boolean equals(@Nullable Object obj) {
    if (obj == this) {
        return true;
    }/*from  www .ja  va 2s .  c  o  m*/
    if (obj instanceof RDFLiteral) {
        RDFLiteral other = (RDFLiteral) obj;
        if (!lexicalValue.equals(other.lexicalValue)) {
            return false;
        }
        if (!lang.toLowerCase(Locale.ROOT).equals(other.lang.toLowerCase(Locale.ROOT))) {
            return false;
        }
        return datatype.equals(other.datatype);
    }
    if (obj instanceof Literal) {
        // Note: This also works on RDFLiteral
        // but is slightly more expensive as it must call the
        // getter methods when accessing obj.
        //
        // To ensure future compatibility, the Commons RDF getter
        // methods are also called on this rather than using the fields.
        Literal literal = (Literal) obj;
        if (!getLexicalForm().equals(((Literal) obj).getLexicalForm())) {
            return false;
        }
        Optional<String> thisTag = getLanguageTag();
        Optional<String> thatTag = literal.getLanguageTag();
        if (thisTag.isPresent() != thatTag.isPresent()) {
            return false;
        }
        if (thisTag.isPresent() && thatTag.isPresent() && !thisTag.get().toLowerCase(Locale.ROOT)
                .equalsIgnoreCase(thatTag.get().toLowerCase(Locale.ROOT))) {
            return false;
        }
        return getDatatype().equals(literal.getDatatype());
    }
    return false;
}

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