@Override
public NewsFeedContent fetchNewsFeed(String url)
throws ParserConfigurationException, SAXException, IOException, XPathExpressionException,
ParseException {
GenericFeedParser parser = GenericFeedParser.ParseFeed(url, "/rss/channel/item");
List<NewsFeedItem> output = new ArrayList<NewsFeedItem>();
NewsFeedItemFactory itemFactory = new NewsFeedItemFactory();
for (int i = 0; i < parser.getFeedLength(); i++) {
Date date = DateTime.parse((parser.getStringKeyValue(i, "pubDate"))).toDate();
NewsFeedItem item =
itemFactory.createInstance(
parser.getStringKeyValue(i, "title"),
parser.getStringKeyValue(i, "description"),
parser.getStringKeyValue(i, "link"),
parser.getStringKeyValue(i, "guid"),
date,
parser.getStringKeyValue(i, "name"),
"",
parser.getStringKeyValue(i, "image"));
output.add(item);
}
return DefaultNewsFeedContent.createInstance(output);
}
public static synchronized Literal getLiteralMatchingDataPropertyRange(
OntModel m, String rnguri, Object v) throws Exception {
Literal val = null;
String errMsg = null;
RDFDatatype rdftype = TypeMapper.getInstance().getSafeTypeByName(rnguri);
if (rdftype != null
&& !rdftype.getURI().equals(XSD.xboolean.getURI())
&& !rdftype.getURI().equals(XSD.date.getURI())
&& !rdftype.getURI().equals(XSD.dateTime.getURI())
&& !rdftype.getURI().equals(XSD.time.getURI())) {
val = m.createTypedLiteral(v, rdftype);
if (val != null) {
return val;
}
}
if (rnguri != null) {
if (rnguri.contains("float")) {
if (v instanceof String) {
v = Double.parseDouble(stripQuotes((String) v));
}
if (v instanceof Double) {
v = new Float(((Double) v).floatValue());
val = m.createTypedLiteral(v);
} else if (v instanceof Float) {
val = m.createTypedLiteral(v);
} else if (v instanceof Integer) {
v = new Float(((Integer) v).floatValue());
val = m.createTypedLiteral(v);
} else {
errMsg =
"Unexpected value '"
+ v.toString()
+ "' ("
+ v.getClass().getSimpleName()
+ ") doesn't match range float";
}
} else if (rnguri.contains("double")) {
if (v instanceof String) {
v = Double.parseDouble(stripQuotes((String) v));
}
if (v instanceof Double) {
val = m.createTypedLiteral(v);
} else if (v instanceof Float) {
v = new Double(((Float) v).doubleValue());
val = m.createTypedLiteral(v);
} else if (v instanceof Integer) {
v = new Double(((Integer) v).doubleValue());
val = m.createTypedLiteral(v);
} else {
errMsg =
"Unexpected value '"
+ v.toString()
+ "' ("
+ v.getClass().getSimpleName()
+ ") doesn't match range double";
}
} else if (rnguri.contains("decimal")) {
if (v instanceof String) {
v = Double.parseDouble(stripQuotes((String) v));
}
if (v instanceof Double) {
v = new BigDecimal(((Double) v).doubleValue());
} else if (v instanceof Float) {
v = new BigDecimal(((Float) v).doubleValue());
} else if (v instanceof Integer) {
v = new BigDecimal(((Integer) v).doubleValue());
} else {
errMsg =
"Unexpected value '"
+ v.toString()
+ "' ("
+ v.getClass().getSimpleName()
+ ") doesn't match range decimal";
}
val = m.createTypedLiteral(v);
} else if (rnguri.contains("int")) {
if (v instanceof String) {
v = Integer.parseInt(stripQuotes((String) v));
}
if (v instanceof Integer) {
val = m.createTypedLiteral(v);
} else {
errMsg =
"Unexpected value '"
+ v.toString()
+ "' ("
+ v.getClass().getSimpleName()
+ ") doesn't match range int";
}
} else if (rnguri.contains("long")) {
if (v instanceof String) {
v = Long.parseLong(stripQuotes((String) v));
}
if (v instanceof Long) {
val = m.createTypedLiteral(v);
} else if (v instanceof Integer) {
val = m.createTypedLiteral(new Long(((Integer) v).longValue()));
} else {
errMsg =
"Unexpected value '"
+ v.toString()
+ "' ("
+ v.getClass().getSimpleName()
+ ") doesn't match range long";
}
} else if (rnguri.contains("string")) {
if (v instanceof String) {
v = stripQuotes((String) v);
val = m.createTypedLiteral(v);
} else {
errMsg =
"Unexpected value '"
+ v.toString()
+ "' ("
+ v.getClass().getSimpleName()
+ ") doesn't match range string";
}
} else if (rnguri.endsWith("date")) {
if (v instanceof String) {
v = stripQuotes((String) v);
DateTime dt = new DateTime((String) v);
String xsdFormat = "yyyy-MM-dd";
String modifiedV = dt.toString(xsdFormat);
val = m.createTypedLiteral(modifiedV, rnguri);
} else {
errMsg =
"Unexpected value '"
+ v.toString()
+ "' ("
+ v.getClass().getSimpleName()
+ ") doesn't match range date/dateTime/time";
}
} else if (rnguri.endsWith("dateTime")) {
if (v instanceof String) {
v = stripQuotes((String) v);
if (v != null && ((String) v).length() > 0) {
DateTime dt = new DateTime((String) v);
String xsdFormat = "yyyy-MM-dd'T'HH:mm:ssZZ";
String modifiedV = dt.toString(xsdFormat);
val = m.createTypedLiteral(modifiedV, rnguri);
}
} else {
errMsg =
"Unexpected value '"
+ v.toString()
+ "' ("
+ v.getClass().getSimpleName()
+ ") doesn't match range date/dateTime/time";
}
} else if (rnguri.endsWith("time")) {
if (v instanceof String) {
v = stripQuotes((String) v);
val = m.createTypedLiteral("\"" + v + "\"", rnguri);
} else {
errMsg =
"Unexpected value '"
+ v.toString()
+ "' ("
+ v.getClass().getSimpleName()
+ ") doesn't match range date/dateTime/time";
}
} else if (rnguri.endsWith("boolean")) {
if (v instanceof String) {
v = Boolean.parseBoolean(stripQuotes((String) v));
}
if (v instanceof Boolean) {
val = m.createTypedLiteral(v);
} else {
errMsg =
"Unexpected value '"
+ v.toString()
+ "' ("
+ v.getClass().getSimpleName()
+ ") doesn't match range boolean";
}
} else {
errMsg = "Unhandled range " + rnguri;
}
} else {
errMsg = "Range should not be null.";
}
if (errMsg != null) {
throw new Exception(errMsg);
}
return val;
}
