public Statement getStatement(
String stateIRI,
Map<String, String> accept,
AuthCredentials authCredentials,
SwordConfiguration swordConfig)
throws SwordServerException, SwordError, SwordAuthException {
SwordContext sc = null;
try {
SwordConfigurationDSpace config = (SwordConfigurationDSpace) swordConfig;
SwordAuthenticator auth = new SwordAuthenticator();
sc = auth.authenticate(authCredentials);
Context context = sc.getContext();
if (log.isDebugEnabled()) {
log.debug(LogManager.getHeader(context, "sword_get_statement", ""));
}
// log the request
String un = authCredentials.getUsername() != null ? authCredentials.getUsername() : "NONE";
String obo =
authCredentials.getOnBehalfOf() != null ? authCredentials.getOnBehalfOf() : "NONE";
log.info(
LogManager.getHeader(
context, "sword_get_statement", "username="******",on_behalf_of=" + obo));
// first thing is to figure out what we're being asked to work on
SwordUrlManager urlManager = config.getUrlManager(context, config);
Item item = urlManager.getItem(context, stateIRI);
if (item == null) {
throw new SwordError(404);
}
// find out if we are allowed to read the item's statement
AuthorizeManager.authorizeAction(context, item, Constants.READ);
// find out, now we know what we're being asked for, whether this is allowed
WorkflowManagerFactory.getInstance().retrieveStatement(context, item);
String suffix = urlManager.getTypeSuffix(context, stateIRI);
SwordStatementDisseminator disseminator = null;
if (suffix != null) {
Map<Float, List<String>> analysed = new HashMap<Float, List<String>>();
List<String> list = new ArrayList<String>();
list.add(suffix);
analysed.put((float) 1.0, list);
disseminator = SwordDisseminatorFactory.getStatementInstance(analysed);
} else {
// we rely on the content negotiation to do the work
String acceptContentType = this.getHeader(accept, "Accept", null);
// we extract from the Accept header the ordered list of content types
TreeMap<Float, List<String>> analysed = this.analyseAccept(acceptContentType);
// the meat of this is done by the package disseminator
disseminator = SwordDisseminatorFactory.getStatementInstance(analysed);
}
Statement statement = disseminator.disseminate(context, item);
return statement;
} catch (AuthorizeException e) {
throw new SwordAuthException();
} catch (SQLException e) {
throw new SwordServerException(e);
} catch (DSpaceSwordException e) {
throw new SwordServerException(e);
} finally {
if (sc != null) {
sc.abort();
}
}
}
