DOIIdentifierProvider extends IdentifierProvider { public String getDOIOutOfObject(DSpaceObject dso) throws DOIIdentifierException { if (!(dso instanceof Item)) { throw new IllegalArgumentException("We currently support DOIs for " + "Items only, not for " + contentServiceFactory .getDSpaceObjectService(dso).getTypeText(dso) + "."); } Item item = (Item) dso; List<MetadataValue> metadata = itemService.getMetadata(item, MD_SCHEMA, DOI_ELEMENT, DOI_QUALIFIER, null); String leftPart = DOI.RESOLVER + SLASH + getPrefix() + SLASH + getNamespaceSeparator(); for (MetadataValue id : metadata) { if (id.getValue().startsWith(leftPart)) { return doiService.DOIFromExternalFormat(id.getValue()); } } return null; } protected  DOIIdentifierProvider(); @Required void setDOIConnector(DOIConnector connector); @Override boolean supports(Class<? extends Identifier> identifier); @Override boolean supports(String identifier); @Override String register(Context context, DSpaceObject dso); @Override void register(Context context, DSpaceObject dso, String identifier); @Override void reserve(Context context, DSpaceObject dso, String identifier); void reserveOnline(Context context, DSpaceObject dso, String identifier); void registerOnline(Context context, DSpaceObject dso, String identifier); void updateMetadata(Context context, DSpaceObject dso, String identifier); void updateMetadataOnline(Context context, DSpaceObject dso, String identifier); @Override String mint(Context context, DSpaceObject dso); @Override DSpaceObject resolve(Context context, String identifier, String... attributes); @Override String lookup(Context context, DSpaceObject dso); @Override void delete(Context context, DSpaceObject dso); @Override void delete(Context context, DSpaceObject dso, String identifier); void deleteOnline(Context context, String identifier); DSpaceObject getObjectByDOI(Context context, String identifier); String getDOIByObject(Context context, DSpaceObject dso); String getDOIOutOfObject(DSpaceObject dso); static final String MD_SCHEMA; static final String DOI_ELEMENT; static final String DOI_QUALIFIER; static final Integer TO_BE_REGISTERED; static final Integer TO_BE_RESERVED; static final Integer IS_REGISTERED; static final Integer IS_RESERVED; static final Integer UPDATE_RESERVED; static final Integer UPDATE_REGISTERED; static final Integer UPDATE_BEFORE_REGISTRATION; static final Integer TO_BE_DELETED; static final Integer DELETED; }
@Test public void testGet_DOI_out_of_item_metadata() throws SQLException, AuthorizeException, IOException, IdentifierException, IllegalAccessException, WorkflowException { Item item = newItem(); String doi = DOI.SCHEME + PREFIX + "/" + NAMESPACE_SEPARATOR + Long.toHexString(new Date().getTime()); context.turnOffAuthorisationSystem(); itemService.addMetadata(context, item, DOIIdentifierProvider.MD_SCHEMA, DOIIdentifierProvider.DOI_ELEMENT, DOIIdentifierProvider.DOI_QUALIFIER, null, doiService.DOIToExternalForm(doi)); itemService.update(context, item); context.restoreAuthSystemState(); assertTrue("Failed to recognize DOI in item metadata.", doi.equals(provider.getDOIOutOfObject(item))); }