public static List<RDFFormat> filterAvailableParsers(List<RDFFormat> rdfFormats) {
final List<RDFFormat> result = new ArrayList<>();
final RDFParserRegistry parserRegistry = RDFParserRegistry.getInstance();
for (RDFFormat f : rdfFormats) {
if (parserRegistry.has(f)) {
result.add(f);
}
}
return result;
}
private RDFFormat findRDFFormat(final String s) {
Optional<RDFFormat> f;
f = RDFParserRegistry.getInstance().getFileFormatForMIMEType(s);
if (!f.isPresent()) {
f = RDFParserRegistry.getInstance().getFileFormatForFileName("example." + s);
}
if (!f.isPresent()) {
throw new IllegalArgumentException("no matching RDF format for '" + s + "'");
}
return f.get();
}
/**
* Parse the HTTP response entity returned by the web service call and return its contents as a
* Sesame RDF repository. The content type returned by the web service is passed as argument to
* help the implementation decide how to parse the data.
*
* @param resourceUri
* @param triples
* @param in input stream as returned by the remote webservice
* @param contentType content type as returned in the HTTP headers of the remote
* webservice @return an RDF repository containing an RDF representation of the dataset
* located at the remote resource.
* @throws java.io.IOException in case an error occurs while reading the input stream
*/
@Override
public List<String> parseResponse(
final String resourceUri,
String requestUrl,
Model triples,
InputStream in,
String contentType)
throws DataRetrievalException {
RDFFormat format =
RDFParserRegistry.getInstance().getFileFormatForMIMEType(contentType, RDFFormat.RDFXML);
try {
ModelCommons.add(
triples,
in,
resourceUri,
format,
new Predicate<Statement>() {
@Override
public boolean test(Statement param) {
return StringUtils.equals(param.getSubject().stringValue(), resourceUri);
}
});
return Collections.emptyList();
} catch (RDFParseException e) {
throw new DataRetrievalException("parse error while trying to parse remote RDF content", e);
} catch (IOException e) {
throw new DataRetrievalException("I/O error while trying to read remote RDF content", e);
}
}