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

Example 11 with ARQException

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

the class ResultSetFormatter method output.

/**
 * Output a ResultSet in some format.
 *  To get detailed control over each format, call the appropriate operation directly.
 *
 * @param outStream Output
 * @param resultSet Result set
 * @param rFmt      A format to encode the result set in
 */
public static void output(OutputStream outStream, ResultSet resultSet, ResultsFormat rFmt) {
    Lang lang = ResultsFormat.convert(rFmt);
    if (lang != null) {
        output(outStream, resultSet, lang);
        return;
    }
    boolean b = ResultsFormat.oldWrite(outStream, rFmt, null, resultSet);
    if (b)
        return;
    throw new ARQException("Unknown ResultSet format: " + rFmt);
}

Example 12 with ARQException

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

the class DatasetFactory method assemble.

/**
 * Assemble a dataset from the model
 *
 * @param model
 * @return Dataset
 */
public static Dataset assemble(Model model) {
    Objects.requireNonNull(model, "model can not be null");
    Resource r = GraphUtils.findRootByType(model, DatasetAssembler.getType());
    if (r == null)
        throw new ARQException("No root found for type <" + DatasetAssembler.getType() + ">");
    return assemble(r);
}

Example 13 with ARQException

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

the class QueryExecHTTP method performQuery.

/**
 * Make a query over HTTP.
 * The response is returned after status code processing so the caller can assume the
 * query execution was successful and return 200.
 * Use {@link HttpLib#getInputStream} to access the body.
 */
private HttpResponse<InputStream> performQuery(String reqAcceptHeader) {
    if (closed)
        throw new ARQException("HTTP execution already closed");
    // SERVICE specials.
    Params thisParams = Params.create(params);
    if (defaultGraphURIs != null) {
        for (String dft : defaultGraphURIs) thisParams.add(HttpParams.pDefaultGraph, dft);
    }
    if (namedGraphURIs != null) {
        for (String name : namedGraphURIs) thisParams.add(HttpParams.pNamedGraph, name);
    }
    HttpLib.modifyByService(service, context, thisParams, httpHeaders);
    HttpRequest request = makeRequest(thisParams, reqAcceptHeader);
    return executeQuery(request);
}

Example 14 with ARQException

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

the class DSP method uploadQuads.

/**
 * Send a file of quads to a URL. The Content-Type is inferred from the file
 * extension.
 */
private static void uploadQuads(HttpClient httpClient, String endpoint, String file, String fileExtContentType, Map<String, String> headers, Push mode) {
    Lang lang = RDFLanguages.contentTypeToLang(fileExtContentType);
    if (!RDFLanguages.isQuads(lang) && !RDFLanguages.isTriples(lang))
        throw new ARQException("Not an RDF format: " + file + " (lang=" + lang + ")");
    pushFile(httpClient, endpoint, file, fileExtContentType, headers, mode);
}

Example 15 with ARQException

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

the class QueryExecUtils method getAtMostOne.

/**
 * Execute, expecting the result to be one row, one column. Return that one
 * RDFNode or null. Throw exception if more than one.
 * Use with {@code try ( QueryExecution qExec = ....)}.
 */
public static RDFNode getAtMostOne(QueryExecution qExec, String varname) {
    ResultSet rs = qExec.execSelect();
    if (!rs.hasNext())
        return null;
    QuerySolution qs = rs.nextSolution();
    RDFNode r = qs.get(varname);
    if (rs.hasNext()) {
        QuerySolution qs2 = rs.next();
        RDFNode r2 = qs2.get(varname);
        if (rs.hasNext())
            throw new ARQException("More than one: var ?" + varname + " -> " + r + ", " + r2 + ", ...");
        else
            throw new ARQException("Found two matches: var ?" + varname + " -> " + r + ", " + r2);
    }
    return r;
}