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

Example 31 with ARQException

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

the class TSVInput 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");
        // 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 32 with ARQException

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

the class CSVInput method booleanFromCSV.

public static boolean booleanFromCSV(InputStream in) {
    CSVParser parser = CSVParser.create(in);
    final List<Var> vars = vars(parser);
    if (vars.size() != 1) {
        throw new ARQException("CSV Boolean Results malformed: variables line='" + vars + "'");
    }
    if (!vars.get(0).getName().equals("_askResult")) {
        FmtLog.warn(log, "Boolean result variable is '%s', not '_askResult'", vars.get(0).getName());
    }
    List<String> line = parser.parse1();
    if (line.size() != 1) {
        throw new ARQException("CSV Boolean Results malformed: data line='" + line + "'");
    }
    String str = line.get(0);
    boolean b;
    if (str.equalsIgnoreCase("true") || str.equalsIgnoreCase("yes"))
        b = true;
    else if (str.equalsIgnoreCase("false") || str.equalsIgnoreCase("no"))
        b = false;
    else {
        throw new ARQException("CSV Boolean Results malformed, expected one of - true yes false no - but got " + str);
    }
    List<String> line2 = parser.parse1();
    if (line2 != null) {
        FmtLog.warn(log, "Extra rows: first is " + line2);
    }
    return b;
}

Example 33 with ARQException

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

the class CSVOutput method format.

@Override
public void format(OutputStream out, ResultSet resultSet) {
    try {
        Writer w = FileUtils.asUTF8(out);
        NodeToLabelMap bnodes = new NodeToLabelMap();
        w = new BufferedWriter(w);
        String sep = null;
        List<String> varNames = resultSet.getResultVars();
        List<Var> vars = new ArrayList<>(varNames.size());
        // Convert to Vars and output the header line.
        for (String v : varNames) {
            if (sep != null)
                w.write(sep);
            else
                sep = ",";
            w.write(csvSafe(v));
            vars.add(Var.alloc(v));
        }
        w.write(NL);
        // Data output
        for (; resultSet.hasNext(); ) {
            sep = null;
            Binding b = resultSet.nextBinding();
            for (Var v : vars) {
                if (sep != null)
                    w.write(sep);
                sep = ",";
                Node n = b.get(v);
                if (n != null)
                    output(w, n, bnodes);
            }
            w.write(NL);
        }
        w.flush();
    } catch (IOException ex) {
        throw new ARQException(ex);
    }
}

Example 34 with ARQException

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

the class UpdateProcessRemote method execute.

@Override
public void execute() {
    // Validation
    if (this.getEndpoint() == null)
        throw new ARQException("Null endpoint for remote update");
    if (this.getUpdateRequest() == null)
        throw new ARQException("Null update request for remote update");
    // Build endpoint URL
    String endpoint = this.getEndpoint();
    String querystring = this.getQueryString();
    if (querystring != null && !querystring.equals("")) {
        endpoint = endpoint.contains("?") ? endpoint + "&" + querystring : endpoint + "?" + querystring;
    }
    // Execution
    String reqStr = this.getUpdateRequest().toString();
    HttpOp.execHttpPost(endpoint, WebContent.contentTypeSPARQLUpdate, reqStr, getClient(), getHttpContext());
}

Example 35 with ARQException

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

the class Metadata method read.

// Protect all classloader choosing -- sometimes systems mess with even the system class loader.
private static void read(Properties properties, String resourceName) {
    // Armour-plate this - classloaders and using them can be blocked by some environments.
    try {
        ClassLoader classLoader = null;
        try {
            classLoader = SystemUtils.chooseClassLoader();
        } catch (ARQException ex) {
        }
        if (classLoader == null) {
            try {
                classLoader = Metadata.class.getClassLoader();
            } catch (ARQException ex) {
            }
        }
        if (classLoader == null) {
            Log.error(Metadata.class, "No classloader");
            return;
        }
        InputStream in = classLoader.getResourceAsStream(resourceName);
        if (in == null)
            // In development, there is no properties file.
            return;
        try {
            properties.loadFromXML(in);
        } catch (InvalidPropertiesFormatException ex) {
            throw new ARQException("Invalid properties file", ex);
        } catch (IOException ex) {
            throw new ARQException("Metadata ==> IOException", ex);
        }
    } catch (Throwable ex) {
        Log.error(Metadata.class, "Unexpected Thorwable", ex);
        return;
    }
}