Example usage for java.lang Throwable getCause

Introduction

In this page you can find the example usage for java.lang Throwable 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:com.amalto.core.save.RecordValidationTest.java

protected static Throwable getRootException(Throwable e) {
    Throwable root = e;
    while (root != null && root.getCause() != null && root.getCause().getMessage() != null) {
        root = root.getCause();/*  w  ww  . j  a v  a  2s.com*/
    }
    return root;
}

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From source file:com.mpower.clientcollection.utilities.WebUtils.java

/**
 * Common method for returning a parsed xml document given a url and the
 * http context and client objects involved in the web connection.
 *
 * @param urlString// w  w  w . j  a  va 2s  .c om
 * @param localContext
 * @param httpclient
 * @return
 */
public static DocumentFetchResult getXmlDocument(String urlString, HttpContext localContext,
        HttpClient httpclient) {
    URI u = null;
    try {
        URL url = new URL(urlString);
        u = url.toURI();
    } catch (Exception e) {
        e.printStackTrace();
        return new DocumentFetchResult(e.getLocalizedMessage()
                // + app.getString(R.string.while_accessing) + urlString);
                + ("while accessing") + urlString, 0);
    }

    if (u.getHost() == null) {
        return new DocumentFetchResult("Invalid server URL (no hostname): " + urlString, 0);
    }

    // if https then enable preemptive basic auth...
    if (u.getScheme().equals("https")) {
        enablePreemptiveBasicAuth(localContext, u.getHost());
    }

    // set up request...
    HttpGet req = WebUtils.createOpenRosaHttpGet(u);
    //req.addHeader(WebUtils.ACCEPT_ENCODING_HEADER, WebUtils.GZIP_CONTENT_ENCODING);

    HttpResponse response = null;
    try {
        response = httpclient.execute(req, localContext);
        int statusCode = response.getStatusLine().getStatusCode();

        HttpEntity entity = response.getEntity();

        if (statusCode != HttpStatus.SC_OK) {
            WebUtils.discardEntityBytes(response);
            if (statusCode == HttpStatus.SC_UNAUTHORIZED) {
                // clear the cookies -- should not be necessary?
                ClientCollection.getInstance().getCookieStore().clear();
            }
            String webError = response.getStatusLine().getReasonPhrase() + " (" + statusCode + ")";

            return new DocumentFetchResult(u.toString() + " responded with: " + webError, statusCode);
        }

        if (entity == null) {
            String error = "No entity body returned from: " + u.toString();
            Log.e(t, error);
            return new DocumentFetchResult(error, 0);
        }

        if (!entity.getContentType().getValue().toLowerCase(Locale.ENGLISH)
                .contains(WebUtils.HTTP_CONTENT_TYPE_TEXT_XML)) {
            WebUtils.discardEntityBytes(response);
            String error = "ContentType: " + entity.getContentType().getValue() + " returned from: "
                    + u.toString()
                    + " is not text/xml.  This is often caused a network proxy.  Do you need to login to your network?";
            Log.e(t, error);
            return new DocumentFetchResult(error, 0);
        }
        // parse response
        Document doc = null;
        try {
            InputStream is = null;
            InputStreamReader isr = null;
            try {
                is = entity.getContent();
                Header contentEncoding = entity.getContentEncoding();
                if (contentEncoding != null
                        && contentEncoding.getValue().equalsIgnoreCase(WebUtils.GZIP_CONTENT_ENCODING)) {
                    is = new GZIPInputStream(is);
                }
                isr = new InputStreamReader(is, "UTF-8");
                doc = new Document();
                KXmlParser parser = new KXmlParser();
                parser.setInput(isr);
                parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, true);
                doc.parse(parser);
                isr.close();
                isr = null;
            } finally {
                if (isr != null) {
                    try {
                        // ensure stream is consumed...
                        final long count = 1024L;
                        while (isr.skip(count) == count)
                            ;
                    } catch (Exception e) {
                        // no-op
                    }
                    try {
                        isr.close();
                    } catch (Exception e) {
                        // no-op
                    }
                }
                if (is != null) {
                    try {
                        is.close();
                    } catch (Exception e) {
                        // no-op
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            String error = "Parsing failed with " + e.getMessage() + "while accessing " + u.toString();
            Log.e(t, error);
            return new DocumentFetchResult(error, 0);
        }

        boolean isOR = false;
        Header[] fields = response.getHeaders(WebUtils.OPEN_ROSA_VERSION_HEADER);
        if (fields != null && fields.length >= 1) {
            isOR = true;
            boolean versionMatch = false;
            boolean first = true;
            StringBuilder b = new StringBuilder();
            for (Header h : fields) {
                if (WebUtils.OPEN_ROSA_VERSION.equals(h.getValue())) {
                    versionMatch = true;
                    break;
                }
                if (!first) {
                    b.append("; ");
                }
                first = false;
                b.append(h.getValue());
            }
            if (!versionMatch) {
                Log.w(t, WebUtils.OPEN_ROSA_VERSION_HEADER + " unrecognized version(s): " + b.toString());
            }
        }
        return new DocumentFetchResult(doc, isOR);
    } catch (Exception e) {
        clearHttpConnectionManager();
        e.printStackTrace();
        String cause;
        Throwable c = e;
        while (c.getCause() != null) {
            c = c.getCause();
        }
        cause = c.toString();
        String error = "Error: " + cause + " while accessing " + u.toString();

        Log.w(t, error);
        return new DocumentFetchResult(error, 0);
    }
}

---

From source file:edu.uci.ics.asterix.result.ResultUtils.java

/**
 * Extract the meaningful part of a stack trace:
 * a. the causes in the stack trace hierarchy
 * b. the top exception for each cause// w ww . j a  v  a  2  s  .  co  m
 *
 * @param e
 * @return the contacted message containing a and b.
 */
private static String extractErrorSummary(Throwable e) {
    StringBuilder errorMessageBuilder = new StringBuilder();
    Throwable cause = e;
    errorMessageBuilder.append(cause.getLocalizedMessage());
    while (cause != null) {
        StackTraceElement[] stackTraceElements = cause.getStackTrace();
        errorMessageBuilder
                .append(stackTraceElements.length > 0 ? "\n caused by: " + stackTraceElements[0] : "");
        cause = cause.getCause();
    }
    return errorMessageBuilder.toString();
}

---

From source file:com.aptana.core.epl.downloader.RepositoryStatusHelper.java

@SuppressWarnings("rawtypes")
public static Throwable unwind(Throwable t) {
    for (;;) {//from  w w  w.  j  av  a2 s . c om
        Class tc = t.getClass();

        // We don't use instanceof operator since we want
        // the explicit class, not subclasses.
        //
        if (tc != RuntimeException.class && tc != InvocationTargetException.class && tc != IOException.class)
            break;

        Throwable cause = t.getCause();
        if (cause == null)
            break;

        String msg = t.getMessage();
        if (msg != null && !msg.equals(cause.toString()))
            break;

        t = cause;
    }
    return t;
}

---

From source file:com.clank.launcher.swing.SwingHelper.java

public static void addErrorDialogCallback(final Window owner, ListenableFuture<?> future) {
    Futures.addCallback(future, new FutureCallback<Object>() {
        @Override//from   w ww  .  ja v  a  2 s . co  m
        public void onSuccess(Object result) {
        }

        @Override
        public void onFailure(Throwable t) {
            if (t instanceof InterruptedException || t instanceof CancellationException) {
                return;
            }

            String message;
            if (t instanceof LauncherException) {
                message = t.getLocalizedMessage();
                t = t.getCause();
            } else {
                message = t.getLocalizedMessage();
                if (message == null) {
                    message = _("errors.genericError");
                }
            }
            log.log(Level.WARNING, "Task failed", t);
            SwingHelper.showErrorDialog(owner, message, _("errorTitle"), t);
        }
    }, SwingExecutor.INSTANCE);
}

---

From source file:com.aptana.core.epl.downloader.RepositoryStatusHelper.java

private static void deeplyPrint(Throwable t, PrintStream strm, boolean stackTrace, int level) {
    if (t instanceof CoreException)
        deeplyPrint((CoreException) t, strm, stackTrace, level);
    else {/*  w w w.java 2 s . c  o m*/
        appendLevelString(strm, level);
        if (stackTrace)
            t.printStackTrace(strm);
        else {
            strm.println(t.toString());
            Throwable cause = t.getCause();
            if (cause != null) {
                strm.print("Caused by: "); //$NON-NLS-1$
                deeplyPrint(cause, strm, stackTrace, level);
            }
        }
    }
}

---

From source file:com.ichi2.anki.AnkiDroidApp.java

private static String getExceptionHash(Throwable th) {
    final StringBuilder res = new StringBuilder();
    Throwable cause = th;
    while (cause != null) {
        final StackTraceElement[] stackTraceElements = cause.getStackTrace();
        for (final StackTraceElement e : stackTraceElements) {
            res.append(e.getClassName());
            res.append(e.getMethodName());
        }/*  ww w.ja va 2s.co  m*/
        cause = cause.getCause();
    }
    return Integer.toHexString(res.toString().hashCode());
}

---

From source file:de.tudarmstadt.lt.ltbot.postprocessor.DecesiveValueProducerPerplexity.java

static void addExtraInfo(CrawlURI uri, String key, Object value) {
    try {/* w  w  w. j  a v a  2 s .com*/
        uri.getExtraInfo().put(key, value);
        uri.getData().put(key, value);
    } catch (Throwable t) {
        for (int i = 1; t != null && i < 10; i++) {
            LOG.log(Level.WARNING,
                    String.format("Failed to add perplexity value to extra info for uri: '%s' (%d-%s:%s).",
                            uri.toString(), i, t.getClass().getName(), t.getMessage()));
            t = t.getCause();
        }
    }
}

---

From source file:edu.temple.cis3238.wiki.utils.StringUtils.java

/**
 *
 * @param e/*from   w  w  w  .ja  v a 2 s  .c  om*/
 * @return
 */
public static final String stackStraceAsStringDetails(final Throwable e) {
    StringBuilder sb = new StringBuilder("");
    if (e != null) {
        final StringWriter stringWriter = new StringWriter();
        try {
            e.printStackTrace(new PrintWriter(stringWriter));
            sb.append(stringWriter.toString());
            sb.append("\nCause:");
            sb.append(e);
            Throwable t = e.getCause();
            while (t != null) {
                sb.append(t);
                sb.append("\n");
                t = t.getCause();
            }
        } catch (Exception exc) {
            sb.append(e.getMessage());
        } finally {
            return StringUtils.toS(sb.toString(), "Sorry.. full stack trace not available");
        }

    } else {
        LOG.warning("Exception null printing stack track");
        return "Null exception";
    }
}

---

From source file:org.eclipse.cft.server.core.internal.CloudErrorUtil.java

protected static HttpClientErrorException getHttpClientError(Throwable t) {
    if (t == null) {
        return null;
    }//  w  w  w . jav a  2s  .  c  o m
    HttpClientErrorException httpException = null;
    if (t instanceof HttpClientErrorException) {
        httpException = (HttpClientErrorException) t;
    } else {
        Throwable cause = t.getCause();
        if (cause instanceof HttpClientErrorException) {
            httpException = (HttpClientErrorException) cause;
        }
    }
    return httpException;

}

---

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