Examples with ARQException org.apache.jena.sparql.ARQException used on opensource projects

Example 41 with ARQException

use of org.apache.jena.sparql.ARQException in project jena by apache.

the class ResultSetUtils method resultSetToStringList.

/**
 * Extracts a List filled with the binding of selectElement variable for each
 * query solution, turned into a string (URIs or lexical forms).
 * Exhausts the result set.  Create a rewindable one to use multiple times.
 * @see org.apache.jena.query.ResultSetFactory
 */
public static List<String> resultSetToStringList(ResultSet rs, String selectElement, String literalOrResource) {
    // feature suggested by James Howison
    List<String> items = new ArrayList<>();
    while (rs.hasNext()) {
        QuerySolution qs = rs.nextSolution();
        RDFNode rn = qs.get(selectElement);
        if (rn.isLiteral())
            items.add(((Literal) rn).getLexicalForm());
        else if (rn.isURIResource())
            items.add(((Resource) rn).getURI());
        else if (rn.isAnon()) {
            items.add(((Resource) rn).getId().getLabelString());
        } else
            throw new ARQException("Unknow thing in results : " + rn);
    }
    return items;
}

Example 42 with ARQException

use of org.apache.jena.sparql.ARQException in project jena by apache.

the class RowSetReaderCSV method vars.

private static List<Var> vars(CSVParser parser) {
    final List<Var> vars = new ArrayList<>();
    List<String> varNames = parser.parse1();
    if (varNames == null)
        throw new ARQException("SPARQL CSV Results malformed, input is empty");
    for (String vn : varNames) {
        vars.add(Var.alloc(vn));
    }
    return vars;
}

Example 43 with ARQException

use of org.apache.jena.sparql.ARQException in project jena by apache.

the class RowSetReaderTSV method booleanFromTSV.

/**
 * Reads SPARQL Boolean result from TSV
 * @param in Input Stream
 * @return boolean
 */
public static boolean booleanFromTSV(InputStream in) {
    BufferedReader reader = IO.asBufferedUTF8(in);
    String str = null;
    try {
        // First try to parse the header
        str = reader.readLine();
        if (str == null)
            throw new ARQException("TSV Boolean Results malformed, input is empty");
        // Remove extraneous white space
        str = str.trim();
        // Expect a header row with single ?_askResult variable
        if (!str.equals("?_askResult"))
            throw new ARQException("TSV Boolean Results malformed, did not get expected ?_askResult header row");
        // end header.
        // Then try to parse the boolean result
        str = reader.readLine();
        if (str == null)
            throw new ARQException("TSV Boolean Results malformed, unexpected end of input after header row");
        str = str.trim();
        if (str.equalsIgnoreCase("true") || str.equalsIgnoreCase("yes")) {
            return true;
        } else if (str.equalsIgnoreCase("false") || str.equalsIgnoreCase("no")) {
            return false;
        } else {
            throw new ARQException("TSV Boolean Results malformed, expected one of - true yes false no - but got " + str);
        }
    } catch (IOException ex) {
        throw new ARQException(ex);
    }
}

Example 44 with ARQException

use of org.apache.jena.sparql.ARQException in project jena by apache.

the class ARQMgt_X method register.

private static void register(ObjectName objName, Object bean) {
    try {
        // (Does not cope with multiple loads running in parallel.)
        if (mbs.isRegistered(objName)) {
            try {
                mbs.unregisterMBean(objName);
            } catch (InstanceNotFoundException ex) {
            }
        }
        log.debug("Register MBean: " + objName);
        mbs.registerMBean(bean, objName);
        // remember ...
        mgtObjects.put(objName, bean);
    } catch (NotCompliantMBeanException ex) {
        log.warn("Failed to register (NotCompliantMBeanException)'" + objName.getCanonicalName() + "': " + ex.getMessage());
        throw new ARQException("Failed to register '" + objName.getCanonicalName() + "': " + ex.getMessage(), ex);
    } catch (InstanceAlreadyExistsException ex) {
        log.warn("Failed to register (InstanceAlreadyExistsException)'" + objName.getCanonicalName() + "': " + ex.getMessage());
        throw new ARQException("Failed to register '" + objName.getCanonicalName() + "': " + ex.getMessage(), ex);
    } catch (MBeanRegistrationException ex) {
        log.warn("Failed to register (MBeanRegistrationException)'" + objName.getCanonicalName() + "': " + ex.getMessage());
        throw new ARQException("Failed to register '" + objName.getCanonicalName() + "': " + ex.getMessage(), ex);
    }
}

Example 45 with ARQException

use of org.apache.jena.sparql.ARQException in project jena by apache.

the class GSP method uploadTriples.

/**
 * Send a file of triples to a URL.
 */
private static void uploadTriples(HttpClient httpClient, String gspUrl, String file, String fileExtContentType, Map<String, String> headers, Push mode) {
    Lang lang = RDFLanguages.contentTypeToLang(fileExtContentType);
    if (lang == null)
        throw new ARQException("Not a recognized as an RDF format: " + fileExtContentType);
    if (RDFLanguages.isQuads(lang) && !RDFLanguages.isTriples(lang))
        throw new ARQException("Can't load quads into a graph");
    if (!RDFLanguages.isTriples(lang))
        throw new ARQException("Not an RDF format: " + file + " (lang=" + lang + ")");
    pushFile(httpClient, gspUrl, file, fileExtContentType, headers, mode);
}