Examples with RDFNode org.apache.jena.rdf.model.RDFNode used on opensource projects

Example 26 with RDFNode

use of org.apache.jena.rdf.model.RDFNode in project jena by apache.

the class SecuredRDFNodeImpl method as.

@SuppressWarnings("unchecked")
@Override
public <T extends RDFNode> T as(final Class<T> view) throws ReadDeniedException, AuthenticationRequiredException, SecuredUnsupportedPolymorphismException {
    checkRead();
    // see if the base Item can as
    T baseAs = holder.getBaseItem().as(view);
    if (view.equals(SecuredRDFNodeImpl.class) || view.equals(RDFNode.class)) {
        return (T) this;
    }
    final Method m = getConstructor(view);
    if (m == null) {
        throw new SecuredUnsupportedPolymorphismException(this, view);
    }
    try {
        return (T) m.invoke(null, securedModel, baseAs);
    } catch (final UnsupportedPolymorphismException e) {
        throw new SecuredUnsupportedPolymorphismException(this, view);
    } catch (final IllegalArgumentException e) {
        throw new RuntimeException(e);
    } catch (final IllegalAccessException e) {
        throw new RuntimeException(e);
    } catch (final InvocationTargetException e) {
        throw new RuntimeException(e);
    }
}

Example 27 with RDFNode

use of org.apache.jena.rdf.model.RDFNode in project jena by apache.

the class SpatialIndexLuceneAssembler method open.

/*
    <#index> a :SpatialIndexLucene ;
        #spatial:directory "mem" ;
        spatial:directory <file:DIR> ;
        spatial:definition <#definition> ;
        .
    */
@SuppressWarnings("resource")
@Override
public SpatialIndex open(Assembler a, Resource root, Mode mode) {
    try {
        if (!GraphUtils.exactlyOneProperty(root, pDirectory))
            throw new SpatialIndexException("No 'spatial:directory' property on " + root);
        Directory directory;
        RDFNode n = root.getProperty(pDirectory).getObject();
        if (n.isLiteral()) {
            if (!"mem".equals(n.asLiteral().getLexicalForm()))
                throw new SpatialIndexException("No 'spatial:directory' property on " + root + " is a literal and not \"mem\"");
            directory = new RAMDirectory();
        } else {
            Resource x = n.asResource();
            String path = IRILib.IRIToFilename(x.getURI());
            File dir = new File(path);
            directory = FSDirectory.open(dir.toPath());
        }
        Resource r = GraphUtils.getResourceValue(root, pDefinition);
        EntityDefinition docDef = (EntityDefinition) a.open(r);
        return SpatialDatasetFactory.createLuceneIndex(directory, docDef);
    } catch (IOException e) {
        IO.exception(e);
        return null;
    }
}

Example 28 with RDFNode

use of org.apache.jena.rdf.model.RDFNode in project jena by apache.

the class LocalizedAnalyzerAssembler method open.

/*
    text:map (
         [ text:field "text" ; 
           text:predicate rdfs:label;
           text:analyzer [
               a  lucene:LocalizedAnalyzer ;
               text:language "en" ;
         ]
        .
     */
@Override
public Analyzer open(Assembler a, Resource root, Mode mode) {
    if (root.hasProperty(TextVocab.pLanguage)) {
        RDFNode node = root.getProperty(TextVocab.pLanguage).getObject();
        if (!node.isLiteral()) {
            throw new TextIndexException("text:language property must be a string : " + node);
        }
        String lang = node.toString();
        return Util.getLocalizedAnalyzer(lang);
    } else {
        return new StandardAnalyzer();
    }
}

Example 29 with RDFNode

use of org.apache.jena.rdf.model.RDFNode in project jena by apache.

the class StandardAnalyzerAssembler method toList.

private List<String> toList(Resource list) {
    List<String> result = new ArrayList<>();
    Resource current = list;
    while (current != null && !current.equals(RDF.nil)) {
        Statement stmt = current.getProperty(RDF.first);
        if (stmt == null) {
            throw new TextIndexException("stop word list not well formed");
        }
        RDFNode node = stmt.getObject();
        if (!node.isLiteral()) {
            throw new TextIndexException("stop word is not a literal : " + node);
        }
        result.add(((Literal) node).getLexicalForm());
        stmt = current.getProperty(RDF.rest);
        if (stmt == null) {
            throw new TextIndexException("stop word list not terminated by rdf:nil");
        }
        node = stmt.getObject();
        if (!node.isResource()) {
            throw new TextIndexException("stop word list node is not a resource : " + node);
        }
        current = (Resource) node;
    }
    return result;
}

Example 30 with RDFNode

use of org.apache.jena.rdf.model.RDFNode in project jena by apache.

the class StandardAnalyzerAssembler method analyzerWithStopWords.

private Analyzer analyzerWithStopWords(Resource root) {
    RDFNode node = root.getProperty(TextVocab.pStopWords).getObject();
    if (!node.isResource()) {
        throw new TextIndexException("text:stopWords property takes a list as a value : " + node);
    }
    CharArraySet stopWords = toCharArraySet((Resource) node);
    return new StandardAnalyzer(stopWords);
}