Examples with MCRPersistentIdentifier org.mycore.pi.MCRPersistentIdentifier used on opensource projects

Example 6 with MCRPersistentIdentifier

use of org.mycore.pi.MCRPersistentIdentifier in project mycore by MyCoRe-Org.

the class MCRMODSURNPersistentIdentifierMetadataManager method getIdentifier.

@Override
public Optional<MCRPersistentIdentifier> getIdentifier(MCRBase obj, String additional) throws MCRPersistentIdentifierException {
    MCRObject object = checkObject(obj);
    MCRMODSWrapper wrapper = new MCRMODSWrapper(object);
    Element element = wrapper.getElement(MODS_IDENTIFIER_TYPE_URN);
    if (element == null) {
        return Optional.empty();
    }
    String urnText = element.getTextNormalize();
    return new MCRDNBURNParser().parse(urnText).filter(Objects::nonNull).map(MCRPersistentIdentifier.class::cast);
}

Example 7 with MCRPersistentIdentifier

use of org.mycore.pi.MCRPersistentIdentifier in project mycore by MyCoRe-Org.

the class MCRURNObjectXPathMetadataManager method getIdentifier.

@Override
public Optional<MCRPersistentIdentifier> getIdentifier(MCRBase obj, String additional) throws MCRPersistentIdentifierException {
    String xpath = getProperties().get("Xpath");
    Document xml = obj.createXML();
    XPathFactory xpfac = XPathFactory.instance();
    XPathExpression<Text> xp = xpfac.compile(xpath, Filters.text());
    List<Text> evaluate = xp.evaluate(xml);
    if (evaluate.size() > 1) {
        throw new MCRPersistentIdentifierException("Got " + evaluate.size() + " matches for " + obj.getId() + " with xpath " + xpath + "");
    }
    if (evaluate.size() == 0) {
        return Optional.empty();
    }
    Text identifierText = evaluate.listIterator().next();
    String identifierString = identifierText.getTextNormalize();
    Optional<MCRDNBURN> parsedIdentifierOptional = PARSER.parse(identifierString);
    return parsedIdentifierOptional.map(MCRPersistentIdentifier.class::cast);
}