Example usage for java.util NoSuchElementException getCause

Introduction

In this page you can find the example usage for java.util NoSuchElementException getCause.

Prototype

public synchronized Throwable getCause() 

Source Link

Document

Returns the cause of this throwable or null if the cause is nonexistent or unknown.

Usage

From source file:edu.gmu.isa681.ctn.EncodedChannel.java

private Encodeable recv(Class<? extends Encodeable> type) throws IOException, UnexpectedTypeException {
    try {/* w w  w .j  a v  a 2s .  c o  m*/
        sin.useDelimiter(DELIMITER);
        String encoded = sin.next();
        return decode(encoded, type);

    } catch (NoSuchElementException ex) {
        throw new IOException(ex.getCause());
    }
}

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From source file:ch.cyberduck.core.worker.ConcurrentTransferWorker.java

@Override
protected Session<?> borrow() throws BackgroundException {
    try {// ww  w .ja v a  2 s . c  om
        if (this.isCanceled()) {
            throw new ConnectionCanceledException();
        }
        Session session;
        while (true) {
            try {
                session = pool.borrowObject();
                break;
            } catch (NoSuchElementException e) {
                if (this.isCanceled()) {
                    throw new ConnectionCanceledException(e);
                }
                if (e.getCause() instanceof BackgroundException) {
                    final BackgroundException cause = (BackgroundException) e.getCause();
                    log.warn(String.format("Failure %s obtaining connection for %s", cause, this));
                    if (diagnostics.determine(cause) == FailureDiagnostics.Type.network) {
                        // Downgrade pool to single connection
                        final int max = pool.getMaxTotal() - 1;
                        log.warn(String.format("Lower maximum pool size to %d connections.", max));
                        pool.setMaxTotal(max);
                        pool.setMaxIdle(pool.getMaxIdle() - 1);
                        if (this.retry()) {
                            if (log.isInfoEnabled()) {
                                log.info(String.format("Connect failed with failure %s", e));
                            }
                            // This is an automated retry. Wait some time first.
                            this.pause();
                            if (!isCanceled()) {
                                repeat.set(repeat.get() + 1);
                                // Retry to connect
                                continue;
                            }
                        }
                    }
                    throw cause;
                }
                if (null == e.getCause()) {
                    log.warn(String.format("Timeout borrowing session from pool %s. Wait for another %dms",
                            pool, BORROW_MAX_WAIT_INTERVAL));
                    // Timeout
                    continue;
                }
                log.error(String.format("Borrowing session from pool %s failed with %s", pool, e));
                throw new BackgroundException(e);
            }
        }
        if (log.isInfoEnabled()) {
            log.info(String.format("Borrow session %s from pool", session));
        }
        return session;
    } catch (BackgroundException e) {
        throw e;
    } catch (Exception e) {
        if (e.getCause() instanceof BackgroundException) {
            throw ((BackgroundException) e.getCause());
        }
        throw new BackgroundException(e.getMessage(), e);
    }
}

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From source file:org.dspace.license.CCLookup.java

/**
 * Passes a set of "answers" to the web service and retrieves a license.
 *
 * @param licenseId The identifier of the license class being requested.
 * @param answers A Map containing the answers to the license fields;
 *          each key is the identifier of a LicenseField, with the value
 *          containing the user-supplied answer.
 * @param lang The language to request localized elements in.
 *
 * @throws IOException//from ww w .  ja  v  a2s .  c  om
 *
 * @see CCLicense
 * @see Map
 */
public void issue(String licenseId, Map answers, String lang) throws IOException {

    // Determine the issue URL
    String issueUrl = this.cc_root + "/license/" + licenseId + "/issue";
    // Assemble the "answers" document
    String answer_doc = "<answers>\n<locale>" + lang + "</locale>\n" + "<license-" + licenseId + ">\n";
    Iterator keys = answers.keySet().iterator();

    try {
        String current = (String) keys.next();

        while (true) {
            answer_doc += "<" + current + ">" + (String) answers.get(current) + "</" + current + ">\n";
            current = (String) keys.next();
        }

    } catch (NoSuchElementException e) {
        // exception indicates we've iterated through the
        // entire collection; just swallow and continue
    }
    // answer_doc +=   "<jurisdiction></jurisidiction>\n";  FAILS with jurisdiction argument
    answer_doc += "</license-" + licenseId + ">\n</answers>\n";
    String post_data;

    try {
        post_data = URLEncoder.encode("answers", "UTF-8") + "=" + URLEncoder.encode(answer_doc, "UTF-8");
    } catch (UnsupportedEncodingException e) {
        return;
    }

    URL post_url;
    try {
        post_url = new URL(issueUrl);
    } catch (MalformedURLException e) {
        return;
    }
    URLConnection connection = post_url.openConnection();
    // this will not be needed after I'm done TODO: remove
    connection.setDoOutput(true);
    OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream());
    writer.write(post_data);
    writer.flush();
    // end TODO
    try {
        // parsing document from input stream
        java.io.InputStream stream = connection.getInputStream();
        this.license_doc = this.parser.build(stream);
    } catch (JDOMException jde) {
        log.warn(jde.getMessage());
    } catch (Exception e) {
        log.warn(e.getCause());
    }
    return;
}

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