Examples with Literal org.apache.clerezza.commons.rdf.Literal used on opensource projects

Example 71 with Literal

use of org.apache.clerezza.commons.rdf.Literal in project stanbol by apache.

the class MetaGraphManager method buildResource.

protected IRI buildResource(final OWLOntologyID publicKey) {
    if (publicKey == null)
        throw new IllegalArgumentException("Cannot build a IRI resource on a null public key!");
    // The IRI is of the form ontologyIRI[:::versionIRI] (TODO use something less conventional?)
    // XXX should versionIRI also include the version IRI set by owners? Currently not
    // Remember not to sanitize logical identifiers.
    org.semanticweb.owlapi.model.IRI ontologyIri = publicKey.getOntologyIRI(), versionIri = publicKey.getVersionIRI();
    if (ontologyIri == null)
        throw new IllegalArgumentException("Cannot build a IRI resource on an anonymous public key!");
    log.debug("Searching for a meta graph entry for public key:");
    log.debug(" -- {}", publicKey);
    IRI match = null;
    LiteralFactory lf = LiteralFactory.getInstance();
    Literal oiri = lf.createTypedLiteral(new IRI(ontologyIri.toString()));
    Literal viri = versionIri == null ? null : lf.createTypedLiteral(new IRI(versionIri.toString()));
    for (Iterator<Triple> it = graph.filter(null, HAS_ONTOLOGY_IRI_URIREF, oiri); it.hasNext(); ) {
        RDFTerm subj = it.next().getSubject();
        log.debug(" -- Ontology IRI match found. Scanning");
        log.debug(" -- RDFTerm : {}", subj);
        if (!(subj instanceof IRI)) {
            log.debug(" ---- (uncomparable: skipping...)");
            continue;
        }
        if (viri != null) {
            // Must find matching versionIRI
            if (graph.contains(new TripleImpl((IRI) subj, HAS_VERSION_IRI_URIREF, viri))) {
                log.debug(" ---- Version IRI match!");
                match = (IRI) subj;
                // Found
                break;
            } else {
                log.debug(" ---- Expected version IRI match not found.");
                // There could be another with the right versionIRI.
                continue;
            }
        } else {
            // Must find unversioned resource
            if (graph.filter((IRI) subj, HAS_VERSION_IRI_URIREF, null).hasNext()) {
                log.debug(" ---- Unexpected version IRI found. Skipping.");
                continue;
            } else {
                log.debug(" ---- Unversioned match!");
                match = (IRI) subj;
                // Found
                break;
            }
        }
    }
    log.debug("Matching IRI in graph : {}", match);
    if (match == null)
        return new IRI(OntologyUtils.encode(publicKey));
    else
        return match;
}