private Object maxOfList(Node lst, RuleContext context) {
java.util.List<Node> l = Util.convertList(lst, context);
Number max = null;
XSDDateTime maxDate = null;
for (int i = 0; l != null && i < l.size(); i++) {
Node elt = (Node) l.get(i);
if (elt != null && elt.isLiteral()) {
Object v1 = elt.getLiteralValue();
if (v1 instanceof Number) {
if (max == null || max.doubleValue() < ((Number) v1).doubleValue()) {
max = (Number) v1;
}
} else if (v1 instanceof XSDDateTime) {
if (maxDate == null || maxDate.compareTo((XSDDateTime) v1) < 0) {
maxDate = (XSDDateTime) v1;
}
} else {
throw new BuiltinException(
this, context, "Element of list input to max not a number: " + v1.toString());
}
} else {
throw new BuiltinException(
this, context, "Element of list input to max not a Literal: " + elt.toString());
}
}
if (maxDate != null) {
return maxDate;
}
return max;
}
/**
* Set the cache control and last modified HTTP headers from data in the graph
*
* @param httpHeaders
* @param rdf
*/
public static void setCachingHeaders(
final MultivaluedMap<String, Object> httpHeaders, final Dataset rdf, final UriInfo uriInfo) {
final List<PathSegment> segments = uriInfo.getPathSegments();
if (!segments.isEmpty() && segments.get(0).getPath().startsWith("tx:")) {
// Do not set caching headers if we are in a transaction
return;
}
httpHeaders.put(CACHE_CONTROL, of((Object) "max-age=0", (Object) "must-revalidate"));
LOGGER.trace(
"Attempting to discover the last-modified date of the node for the resource in question...");
final Iterator<Quad> iterator =
rdf.asDatasetGraph().find(ANY, getDatasetSubject(rdf), lastModifiedPredicate, ANY);
if (!iterator.hasNext()) {
return;
}
final Object dateObject = iterator.next().getObject().getLiteralValue();
if (!(dateObject instanceof XSDDateTime)) {
LOGGER.debug("Found last-modified date, but it was not an XSDDateTime: {}", dateObject);
return;
}
final XSDDateTime lastModified = (XSDDateTime) dateObject;
LOGGER.debug("Found last-modified date: {}", lastModified);
final String lastModifiedAsRdf2822 =
RFC2822DATEFORMAT.print(new DateTime(lastModified.asCalendar()));
httpHeaders.put(LAST_MODIFIED, of((Object) lastModifiedAsRdf2822));
}
/**
* the last three can be null log( message, level, null, null, null); log(defaultlogprefix,
* message, level, null, null, null);
*
* @param logPrefix
* @param message
* @param level
* @param dc_creator
* @param resourceURI
* @param logger
* @return
*/
public static OntModel log(
String logPrefix,
String message,
RLOGIndividuals level,
String dc_creator,
String resourceURI,
Logger logger) {
OntModel model =
ModelFactory.createOntologyModel(
OntModelSpec.OWL_DL_MEM, ModelFactory.createDefaultModel());
model.setNsPrefix("rlog", "http://persistence.uni-leipzig.org/nlp2rdf/ontologies/rlog#");
// urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6
// Resource r = model.createResource(logPrefix + level.name() + "_" + UUID.randomUUID() +
// "_" + System.currentTimeMillis());
Resource r = model.createResource(logPrefix + UUID.randomUUID());
r.addProperty(RDF.type, model.createResource(RLOGOntClasses.Entry.getUri()));
r.addProperty(
RLOGObjectProperties.level.getObjectProperty(model), model.createResource(level.getUri()));
r.addProperty(
RLOGDatatypeProperties.message.getDatatypeProperty(model), model.createLiteral(message));
XSDDateTime date = new XSDDateTime(Calendar.getInstance());
r.addProperty(
RLOGDatatypeProperties.date.getDatatypeProperty(model),
date.toString(),
date.getNarrowedDatatype());
if (dc_creator != null) {
r.addProperty(DC.creator, model.createLiteral(dc_creator));
}
if (resourceURI != null) {
r.addProperty(
RLOGObjectProperties.resource.getObjectProperty(model),
model.createResource(resourceURI));
}
if (logger != null) {
r.addProperty(RLOGDatatypeProperties.className.getDatatypeProperty(model), logger.getName());
switch (level) {
case TRACE:
logger.trace(message);
break;
case DEBUG:
logger.debug(message);
break;
case INFO:
logger.info(message);
break;
case WARN:
logger.warn(message);
break;
case ERROR:
logger.error(message);
break;
case FATAL:
logger.error(message);
break;
}
}
return model;
}