Example usage for java.io Writer flush

List of usage examples for java.io Writer flush

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Introduction

In this page you can find the example usage for java.io Writer flush.

Prototype

public abstract void flush() throws IOException;

Source Link

Document

Flushes the stream.

Usage

From source file:com.day.cq.wcm.foundation.forms.FormsHelper.java

/**
 * Writes the given form load resource as JSON into the given writer. Can be
 * used in JSPs to inline JSON for javascript code, for example:
 *
 * <pre>/* w  w  w . java 2 s . c  o m*/
 * var data = &lt;% FormsHelper.inlineValuesAsJson(slingRequest, out, &quot;.&quot;); %&gt;;
 * </pre>
 *
 * which might result in:
 *
 * <pre>
 * var data = { &quot;jcr:primaryType&quot;: &quot;nt:unstructured&quot;, &quot;property&quot; : &quot;value&quot; };
 * </pre>
 *
 * <p>
 * If the path cannot be found, an empty object "<code>{}</code>" will be
 * written. Any exception will be passed to the caller.
 *
 * <p>
 * The underlying form load resource must be based on a JCR Node. The path
 * is relative and allows to specify subnodes. It cannot point to JCR
 * properties, please use
 * {@link #getValue(SlingHttpServletRequest, String, String)} or
 * {@link #getValues(SlingHttpServletRequest, String, String[])} for them.
 *
 * @param request
 *            the current request
 * @param out
 *            a writer, such as a {@link JspWriter}, to write the JSON into.
 *            Will automatically be flushed before and after.
 * @param path
 *            an absolute node path or a node path relativ to the current
 *            form load resource. Use "." for the resource node itself.
 * @param nodeDepth
 *            until which depth the tree should be written; 0 means the
 *            current node and its properties only; -1 means the whole tree.
 * @throws RepositoryException
 *             if some jcr error happened
 * @throws JSONException
 *             if writing the json failed
 * @throws IOException
 *             if there was a problem with the writer
 */
public static void inlineValuesAsJson(final SlingHttpServletRequest request, Writer out, String path,
        int nodeDepth) throws IOException, RepositoryException, JSONException {
    out.flush();

    Node node;
    Session session = request.getResourceResolver().adaptTo(Session.class);
    if (path.startsWith("/")) {
        if (session.nodeExists(path)) {
            node = session.getNode(path);
        } else {
            // write empty object to not break javascript syntax
            out.append("{}");
            return;
        }
    } else {
        Resource loadResource = FormsHelper.getFormLoadResource(request);
        if (loadResource == null) {
            out.append("{}");
            return;
        }
        node = loadResource.adaptTo(Node.class);
        if (node == null) {
            out.append("{}");
            return;
        }
        if (!node.hasNode(path)) {
            out.append("{}");
            return;
        }
        node = node.getNode(path);
    }

    JsonItemWriter jsonWriter = new JsonItemWriter(null);
    jsonWriter.dump(node, new PrintWriter(out), nodeDepth);

    out.flush();
}

From source file:org.wso2.carbon.ml.rest.api.ModelApiV10.java

/**
 * Predict using a file and return predictions as a CSV.
 * @param modelId Unique id of the model
 * @param dataFormat Data format of the file (CSV or TSV)
 * @param columnHeader Whether the file contains the column header as the first row (YES or NO)
 * @param inputStream Input stream generated from the file used for predictions
 * @return A file as a {@link javax.ws.rs.core.StreamingOutput}
 *//*from ww w . j  a v  a2  s. co m*/
@POST
@Path("/predictionStreams")
@Produces(MediaType.APPLICATION_OCTET_STREAM)
@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response streamingPredict(@Multipart("modelId") long modelId, @Multipart("dataFormat") String dataFormat,
        @Multipart("columnHeader") String columnHeader, @Multipart("file") InputStream inputStream) {
    PrivilegedCarbonContext carbonContext = PrivilegedCarbonContext.getThreadLocalCarbonContext();
    int tenantId = carbonContext.getTenantId();
    String userName = carbonContext.getUsername();
    try {
        // validate input parameters
        // if it is a file upload, check whether the file is sent
        if (inputStream == null || inputStream.available() == 0) {
            String msg = String.format(
                    "Error occurred while reading the file for model [id] %s of tenant [id] %s and [user] %s .",
                    modelId, tenantId, userName);
            logger.error(msg);
            return Response.status(Response.Status.BAD_REQUEST).entity(new MLErrorBean(msg)).build();
        }
        final String predictions = mlModelHandler.streamingPredict(tenantId, userName, modelId, dataFormat,
                columnHeader, inputStream);
        StreamingOutput stream = new StreamingOutput() {
            @Override
            public void write(OutputStream outputStream) throws IOException {
                Writer writer = new BufferedWriter(
                        new OutputStreamWriter(outputStream, StandardCharsets.UTF_8));
                writer.write(predictions);
                writer.flush();
                writer.close();
            }
        };
        return Response.ok(stream).header("Content-disposition",
                "attachment; filename=Predictions_" + modelId + "_" + MLUtils.getDate() + MLConstants.CSV)
                .build();
    } catch (IOException e) {
        String msg = MLUtils.getErrorMsg(String.format(
                "Error occurred while reading the file for model [id] %s of tenant [id] %s and [user] %s.",
                modelId, tenantId, userName), e);
        logger.error(msg, e);
        return Response.status(Response.Status.BAD_REQUEST).entity(new MLErrorBean(e.getMessage())).build();
    } catch (MLModelHandlerException e) {
        String msg = MLUtils.getErrorMsg(String.format(
                "Error occurred while predicting from model [id] %s of tenant [id] %s and [user] %s.", modelId,
                tenantId, userName), e);
        logger.error(msg, e);
        return Response.status(Response.Status.INTERNAL_SERVER_ERROR).entity(new MLErrorBean(e.getMessage()))
                .build();
    }
}

From source file:dk.defxws.fgssolrremote.OperationsImpl.java

private StringBuffer sendToSolr(String solrCommand, String postParameters) throws Exception {
    if (logger.isDebugEnabled())
        logger.debug("sendToSolr solrCommand=" + solrCommand + "\nPost parameters=\n" + postParameters);
    String base = config.getIndexBase(indexName);
    URI uri = new URI(base + solrCommand);
    URL url = uri.toURL();/*from   w w  w. ja  va2 s  .co  m*/
    HttpURLConnection con = (HttpURLConnection) url.openConnection();

    if (postParameters != null) {
        con.setRequestProperty("Content-type", "text/xml; charset=UTF-8");
        con.setRequestMethod("POST");
        con.setDoOutput(true);
        OutputStream out = con.getOutputStream();
        Writer writer = new OutputStreamWriter(out, "UTF-8");
        Reader reader = new StringReader(postParameters);
        char[] buf = new char[1024];
        int read = 0;
        while ((read = reader.read(buf)) >= 0) {
            writer.write(buf, 0, read);
        }
        writer.flush();
        writer.close();
        out.close();
    }

    int responseCode = con.getResponseCode();
    if (logger.isDebugEnabled())
        logger.debug("sendToSolr solrCommand=" + solrCommand + " response Code=" + responseCode);

    BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
    String inputLine;
    StringBuffer response = new StringBuffer();

    while ((inputLine = in.readLine()) != null) {
        response.append(inputLine);
    }
    in.close();
    if (logger.isDebugEnabled())
        logger.debug("sendToSolr solrCommand=" + solrCommand + "\n response=" + response);
    return response;
}

From source file:edu.duke.cabig.c3pr.web.security.SecureWebServiceHandler.java

/**
 * Store the certificate in a temporary file for further investigation.
 * //w w w . ja v  a  2 s . c o m
 * @param cert
 */
private void store(X509Certificate cert, boolean binary) {
    try {
        byte[] buf = cert.getEncoded();
        final File file = new File(SystemUtils.JAVA_IO_TMPDIR,
                "Certificate_" + System.currentTimeMillis() + ".crt");
        log.error("Storing X.509 certificate in the file: " + file.getCanonicalPath());
        OutputStream os = new FileOutputStream(file);
        if (binary) {
            os.write(buf);
            os.flush();
        } else {
            Writer wr = new OutputStreamWriter(os, Charset.forName("UTF-8"));
            wr.write("-----BEGIN CERTIFICATE-----\n");
            wr.write(new sun.misc.BASE64Encoder().encode(buf));
            wr.write("\n-----END CERTIFICATE-----\n");
            wr.flush();
        }
        os.close();
    } catch (Exception e) {
        log.info(e.toString(), e);
    }
}

From source file:com.centeractive.ws.client.core.SoapClient.java

private String performTransmission(String data) throws IOException {
    Writer outputWriter = null;
    try {/* w  w  w .jav  a2  s .com*/
        outputStream = connection.getOutputStream();
        outputWriter = new OutputStreamWriter(outputStream, Charset.forName("UTF-8"));
        outputWriter.write(data);
        outputWriter.flush();

        inputStream = connection.getInputStream();
        StringBuilder response = new StringBuilder();
        int inputChar;
        while ((inputChar = inputStream.read()) != -1) {
            response.append((char) inputChar);
        }
        return response.toString();
    } finally {
        if (outputWriter != null) {
            IOUtils.closeQuietly(outputWriter);
        }
    }
}

From source file:com.otisbean.keyring.Ring.java

private void closeWriter(Writer writer, String outFile) throws IOException {
    if (outFile.equals("-")) {
        writer.write("\n");
        writer.flush();
    } else {//from   w  ww  . j a v  a 2 s.c o  m
        writer.close();
    }
}

From source file:dk.deck.remoteconsole.SshRemoteConsole.java

private void output(String data, Writer liveOutput, StringBuilder output) throws IOException {
    if (liveOutput != null) {
        liveOutput.append(data);//from w w w .  j a  v a2s .  com
        liveOutput.flush();
    }
    if (output.toString().length() < MAX_CONTENT_LENGTH) {
        output.append(data);
    }
}

From source file:org.kurento.test.grid.GridHandler.java

private void createRemoteScript(GridNode node, String remotePort, String remoteScript, String remoteFolder,
        String remoteChromeDriver, String classpath, BrowserType browser, int maxInstances) throws IOException {

    Map<String, Object> data = new HashMap<String, Object>();
    data.put("remotePort", String.valueOf(remotePort));
    data.put("maxInstances", String.valueOf(maxInstances));
    data.put("hubIp", hubAddress);
    data.put("hubPort", String.valueOf(hubPort));
    data.put("tmpFolder", node.getTmpFolder());
    data.put("remoteChromeDriver", remoteChromeDriver);
    data.put("classpath", classpath);
    data.put("pidFile", REMOTE_PID_FILE);
    data.put("browser", browser);

    // Create script for Node
    Configuration cfg = new Configuration(Configuration.DEFAULT_INCOMPATIBLE_IMPROVEMENTS);
    cfg.setClassForTemplateLoading(PerformanceTest.class, "/templates/");

    String tmpScript = node.getTmpFolder() + LAUNCH_SH;
    try {//from   w  w w. j a  va  2  s  .com
        Template template = cfg.getTemplate(LAUNCH_SH + ".ftl");
        Writer writer = new FileWriter(new File(tmpScript));
        template.process(data, writer);
        writer.flush();
        writer.close();

    } catch (Exception e) {
        throw new RuntimeException("Exception while creating file from template", e);
    }

    // Copy script to remote node
    node.getSshConnection().scp(tmpScript, remoteScript);
    node.getSshConnection().execAndWaitCommand("chmod", "+x", remoteScript);
    Shell.runAndWait("rm", tmpScript);
}

From source file:com.eyeq.pivot4j.ui.aggregator.AbstractAggregatorTestCase.java

/**
 * @see com.eyeq.pivot4j.AbstractIntegrationTestCase#setUp()
 *//*  ww w.  j ava 2 s  .co  m*/
@Override
public void setUp() throws Exception {
    super.setUp();

    PivotModel model = getPivotModel();
    model.setMdx(readTestResource(getQueryName() + ".txt"));
    model.initialize();

    Writer writer = null;

    File file = File.createTempFile("pivot4j-", ".html");

    if (deleteTestFile) {
        file.deleteOnExit();
    }

    try {
        writer = new FileWriter(file);

        HtmlRenderer renderer = new HtmlRenderer(writer);
        renderer.initialize();
        renderer.setTableId("pivot");
        renderer.setBorder(1);

        configureRenderer(renderer);
        configureAggregators(renderer);

        renderer.render(model);
    } finally {
        writer.flush();
        IOUtils.closeQuietly(writer);
    }

    WebClient webClient = new WebClient();
    HtmlPage page = webClient.getPage(file.toURI().toURL());

    this.table = page.getHtmlElementById("pivot");

    assertThat("Table element is not found.", table, is(notNullValue()));
}