/**
* Query SPARQL endpoint with a SELECT query
*
* @param qExec QueryExecution encapsulating the query
* @return model retrieved by querying the endpoint
*/
private Model getSelectModel(QueryExecution qExec) {
Model model = ModelFactory.createDefaultModel();
Graph graph = model.getGraph();
ResultSet results = qExec.execSelect();
while (results.hasNext()) {
QuerySolution sol = results.next();
String subject;
String predicate;
RDFNode object;
try {
subject = sol.getResource("s").toString();
predicate = sol.getResource("p").toString();
object = sol.get("o");
} catch (NoSuchElementException e) {
logger.error("SELECT query does not return a (?s ?p ?o) Triple");
continue;
}
Node objNode;
if (object.isLiteral()) {
Literal obj = object.asLiteral();
objNode = NodeFactory.createLiteral(obj.getString(), obj.getDatatype());
} else {
objNode = NodeFactory.createLiteral(object.toString());
}
graph.add(
new Triple(NodeFactory.createURI(subject), NodeFactory.createURI(predicate), objNode));
}
return model;
}
// See RDFParser
private Node createNode(Map<String, Object> map) {
String type = (String) map.get("type");
String lex = (String) map.get("value");
if (type.equals(IRI)) return NodeFactory.createURI(lex);
else if (type.equals(BLANK_NODE)) return labels.get(null, lex);
else if (type.equals(LITERAL)) {
String lang = (String) map.get("language");
String datatype = (String) map.get("datatype");
if (lang == null && datatype == null) return NodeFactory.createLiteral(lex);
if (lang != null) return NodeFactory.createLiteral(lex, lang, null);
RDFDatatype dt = NodeFactory.getType(datatype);
return NodeFactory.createLiteral(lex, dt);
} else throw new InternalErrorException("Node is not a IRI, bNode or a literal: " + type);
// /*
// * "value" : The value of the node.
// * "subject" can be an IRI or blank node id.
// * "predicate" should only ever be an IRI
// * "object" can be and IRI or blank node id, or a literal value (represented as
// a string)
// * "type" : "IRI" if the value is an IRI or "blank node" if the value is a blank node.
// * "object" can also be "literal" in the case of literals.
// * The value of "object" can also contain the following optional key-value pairs:
// * "language" : the language value of a string literal
// * "datatype" : the datatype of the literal. (if not set will default to XSD:string, if
// set to null, null will be used). */
// System.out.println(map.get("value")) ;
// System.out.println(map.get("type")) ;
// System.out.println(map.get("language")) ;
// System.out.println(map.get("datatype")) ;
// return null ;
}
/**
* Adds a handlesMimetypes restriction to the query.
*
* <p>Note that all mimetypes added using the methods {@link #addHandlesMimetype(String...)},
* {@link #addHandlesMimetypeWildcard(String...)}, {@link #addHandlesMimetypes(String, String)}
* and {@link #addHandlesMimetypesWildcard(String, String)} will be concatenated using UNION.
*
* @param leftMimetype the left mimetype
* @param rightMimetype the right mimetype
* @return this query
*/
public ComponentQuery addHandlesMimetypes(String leftMimetype, String rightMimetype) {
if (leftMimetype != null
&& !leftMimetype.isEmpty()
&& rightMimetype != null
&& !rightMimetype.isEmpty()) {
Node node = NodeFactory.createAnon();
ElementGroup group = new ElementGroup();
group.addTriplePattern(
new Triple(wfNode, NodeFactory.createURI(ONTOLOGY_IRI + "handlesMimetypes"), node));
group.addTriplePattern(
new Triple(
node,
NodeFactory.createURI(TYPE_IRI),
NodeFactory.createURI(ONTOLOGY_IRI + "AcceptedMimetypes")));
group.addTriplePattern(
new Triple(
node,
NodeFactory.createURI(ONTOLOGY_IRI + "handlesLeftMimetype"),
NodeFactory.createLiteral(leftMimetype)));
group.addTriplePattern(
new Triple(
node,
NodeFactory.createURI(ONTOLOGY_IRI + "handlesRightMimetype"),
NodeFactory.createLiteral(rightMimetype)));
handlesMimetypes.addElement(group);
}
return this;
}
/**
* Adds a migration path restriction to the query.
*
* @param sourceMimetype the source mimetype
* @param targetMimetype the target mimetype
* @return this query
*/
public ComponentQuery addMigrationPath(String sourceMimetype, String targetMimetype) {
if ((sourceMimetype != null && !sourceMimetype.isEmpty())
|| (targetMimetype != null && !targetMimetype.isEmpty())) {
Node node = NodeFactory.createAnon();
ElementGroup group = new ElementGroup();
group.addTriplePattern(
new Triple(wfNode, NodeFactory.createURI(ONTOLOGY_IRI + "migrates"), node));
group.addTriplePattern(
new Triple(
node,
NodeFactory.createURI(TYPE_IRI),
NodeFactory.createURI(ONTOLOGY_IRI + "MigrationPath")));
if (sourceMimetype != null && !sourceMimetype.isEmpty()) {
group.addTriplePattern(
new Triple(
node,
NodeFactory.createURI(ONTOLOGY_IRI + "sourceMimetype"),
NodeFactory.createLiteral(sourceMimetype)));
}
if (targetMimetype != null && !targetMimetype.isEmpty()) {
group.addTriplePattern(
new Triple(
node,
NodeFactory.createURI(ONTOLOGY_IRI + "targetMimetype"),
NodeFactory.createLiteral(targetMimetype)));
}
query.addElement(group);
}
return this;
}
// simualte the streaming data
public boolean streamEmulation() throws IOException {
String line = null;
while (this.cacheContentOfGraphIds.size() < this.size) {
AGGraph graph =
this.graphMaker.createGraph("http://fefocacheeviction.org/graph" + this.graphID);
for (int i = 0; i < this.numberOfTriples; ++i) {
if ((line = this.br.readLine()) != null) {
line = line.replaceAll("<", "");
line = line.replaceAll(">", "");
String[] parts = line.split(" ");
Node s = NodeFactory.createURI(parts[0]);
Node p = NodeFactory.createURI(parts[1]);
if (parts[2].contains("http")) {
Node o = NodeFactory.createURI(parts[2].substring(0, parts[2].length()));
graph.add(new Triple(s, p, o));
} else {
Node o = NodeFactory.createLiteral(parts[2].substring(1, parts[2].length() - 1));
graph.add(new Triple(s, p, o));
}
} else {
return false;
}
}
this.cacheContentOfGraphIds.add(
new GraphIdCounterPair(
"http://fefocacheeviction.org/graph" + (this.graphID++), LocalTime.now()));
this.modelGraph = this.graphMaker.createUnion(this.modelGraph, graph);
}
return true;
}
@Test
public void shouldConvertRdfObjectsToStrings() {
final DatasetGraph mem = createMem();
mem.add(
createAnon(), createURI("subject"), createURI("a/b/c"), NodeFactory.createLiteral("abc"));
mem.add(
createAnon(), createURI("subject"),
createURI("a-numeric-type"), createTypedLiteral(0).asNode());
mem.add(
createAnon(), createURI("subject"),
createURI("an-empty-string"), createLiteral(""));
mem.add(createAnon(), createURI("subject"), createURI("a-uri"), createURI("some-uri"));
assertEquals(
"abc", testObj.getObjectsAsString(mem, createURI("subject"), createResource("a/b/c")));
assertEquals(
"0",
testObj.getObjectsAsString(mem, createURI("subject"), createResource("a-numeric-type")));
assertEquals(
"<empty>",
testObj.getObjectsAsString(mem, createURI("subject"), createResource("an-empty-string")));
assertEquals(
"<<a href=\"some-uri\">some-uri</a>>",
testObj.getObjectsAsString(mem, createURI("subject"), createResource("a-uri")));
assertEquals(
"",
testObj.getObjectsAsString(mem, createURI("subject"), createResource("a-nonexistent-uri")));
}
public static Binding toBinding(List<String> row, List<Var> vars) {
BindingHashMap result = new BindingHashMap();
for (int i = 0; i < vars.size(); i++) {
result.add(vars.get(i), NodeFactory.createLiteral(row.get(i)));
}
return result;
}
@Override
public String asSparqlTerm(PrefixLogger pl) {
String lang = (language.equals("none") ? "" : language);
RDFDatatype dt =
datatype.length() == 0 ? null : TypeMapper.getInstance().getSafeTypeByName(datatype);
Node n = NodeFactory.createLiteral(spelling, lang, dt);
if (datatype.length() > 0) pl.present(datatype);
String lf = FmtUtils.stringForNode(n, RDFUtils.noPrefixes);
return lf;
}
/**
* Adds a handlesMimetype restriction to the query.
*
* <p>Note that all mimetypes added using the methods {@link #addHandlesMimetype(String...)},
* {@link #addHandlesMimetypeWildcard(String...)}, {@link #addHandlesMimetypes(String, String)}
* and {@link #addHandlesMimetypesWildcard(String, String)} will be concatenated using UNION.
*
* @param mimetypes the mimetypes
* @return this query
*/
public ComponentQuery addHandlesMimetype(String... mimetypes) {
if (mimetypes != null && mimetypes.length > 0) {
ElementGroup elements = new ElementGroup();
Set<String> mimeset = new HashSet<String>();
Collections.addAll(mimeset, mimetypes);
for (String mimetype : mimeset) {
if (mimetype != null) {
elements.addTriplePattern(
new Triple(
wfNode,
NodeFactory.createURI(ONTOLOGY_IRI + "handlesMimetype"),
NodeFactory.createLiteral(mimetype)));
}
}
handlesMimetypes.addElement(elements);
}
return this;
}
private ResultSetRewindable convertToStrings(ResultSetRewindable resultsActual) {
List<Binding> bindings = new ArrayList<Binding>();
while (resultsActual.hasNext()) {
Binding b = resultsActual.nextBinding();
BindingMap b2 = BindingFactory.create();
for (String vn : resultsActual.getResultVars()) {
Var v = Var.alloc(vn);
Node n = b.get(v);
String s;
if (n == null) s = "";
else if (n.isBlank()) s = "_:" + n.getBlankNodeLabel();
else s = NodeFunctions.str(n);
b2.add(v, NodeFactory.createLiteral(s));
}
bindings.add(b2);
}
ResultSet rs =
new ResultSetStream(
resultsActual.getResultVars(), null, new QueryIterPlainWrapper(bindings.iterator()));
return ResultSetFactory.makeRewindable(rs);
}
@Override
public void headAction(Node[] args, int length, RuleContext context) {
checkArgs(length, context);
Node n0 = getArg(0, args, context);
Node n1 = getArg(1, args, context);
Node n2 = getArg(2, args, context);
logger.fine("BLACKLIST in head action " + n0 + " " + n1 + " " + n2);
SolrDocumentList docs =
SolrUtil.getDocsbySPO(null, IDS.hasSourceDeviceId.toString(), n2.toString(), 4, true);
logger.fine(" docs are " + docs);
int countIncidents = 0;
for (int k = 0; k < docs.size(); k++) {
SolrDocument doc = docs.get(k);
logger.fine(" doc received is " + doc);
String subject = (String) doc.getFieldValue("subject_t");
SolrDocumentList docs2 = SolrUtil.getDocsbySPO(subject, "*incidentTime*", null, 1);
logger.fine(" docs2 are " + docs2);
Calendar timeStamp = Util.toCalendar((String) docs2.get(0).getFieldValue("object_t"));
logger.info("TIMESTAMP: " + timeStamp.getTime());
Calendar oldNow = Util.getNowPlus(-86400000);
logger.fine("24 hours ago: " + Util.calendarToISO8601String(oldNow));
if (timeStamp.compareTo(oldNow) > 0) {
countIncidents = countIncidents + 1;
logger.fine("CountIncidents: " + countIncidents);
}
}
SolrDocumentList docs2 =
SolrUtil.getDocsbySPO(
null, IDS.isAttackedByID.toString(), n2.toString(), SolrUtil.MAX_DOCS, true);
if (docs2.size() <= 0) {
if (countIncidents == 4) {
Node sub = NodeFactory.createURI(IDS.Attack.getURI() + UUID.randomUUID());
Node pred1 = NodeFactory.createURI(IDS.hasStatus.getURI());
Node obj1 = NodeFactory.createLiteral("Multiple ID Attempt Attack");
context.add(new Triple(sub, pred1, obj1));
logger.fine("added n-triple: " + sub + "," + pred1 + "," + obj1);
Node pred2 = NodeFactory.createURI(IDS.isAttackedByID.getURI());
context.add(new Triple(sub, pred2, n2));
logger.fine("added n-triple: " + sub + "," + pred2 + "," + n2);
SolrDocument doc = docs.get(0);
Date timeStamp = (Date) doc.getFieldValue("timestamp");
Calendar cal = Calendar.getInstance();
cal.setTime(timeStamp);
String aTimeStart = Util.calendarToISO8601String(cal);
Node obj2 = NodeFactory.createLiteral(aTimeStart);
Node pred3 = NodeFactory.createURI(IDS.attackStartTime.getURI());
context.add(new Triple(sub, pred3, obj2));
logger.fine("added n-triple: " + sub + "," + pred3 + "," + obj2);
SolrDocument doc2 = docs.get(docs.size() - 1);
Date timeStamp2 = (Date) doc.getFieldValue("timestamp");
Calendar cal2 = Calendar.getInstance();
cal2.setTime(timeStamp2);
String aTimeStart2 = Util.calendarToISO8601String(cal2);
Node obj3 = NodeFactory.createLiteral(aTimeStart2);
Node pred4 = NodeFactory.createURI(IDS.attackEndTime.getURI());
context.add(new Triple(sub, pred4, obj3));
logger.fine("added n-triple: " + sub + "," + pred4 + "," + obj3);
}
}
}
private Node createLiteral(String lex, String datatype, String lang) {
if (lang == null && datatype == null) return NodeFactory.createLiteral(lex);
if (lang != null) return NodeFactory.createLiteral(lex, lang, null);
RDFDatatype dt = NodeFactory.getType(datatype);
return NodeFactory.createLiteral(lex, dt);
}
