Example usage for java.io PipedReader PipedReader

Introduction

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

Prototype

public PipedReader(int pipeSize) 

Source Link

Document

Creates a PipedReader so that it is not yet #connect(java.io.PipedWriter) connected and uses the specified pipe size for the pipe's buffer.

Usage

From source file:com.hp.hpl.jena.grddl.impl.GRDDL.java

private Result n3result() throws IOException {
    pipe = new PipedWriter();
    final PipedReader pr = new PipedReader(pipe);
    Result rslt = new StreamResult(pipe);
    subThread = new Thread() {
        public void run() {
            ((GRDDLReaderBase) reader).n3.read(model, pr, input.retrievalIRI());
        }/*from  w  w w  . ja v  a 2s .c  om*/
    };
    subThread.start();
    return rslt;
}

---

From source file:org.fcrepo.server.access.FedoraAccessServlet.java

public void getObjectProfile(Context context, String PID, Date asOfDateTime, boolean xml,
        HttpServletRequest request, HttpServletResponse response) throws ServerException {

    OutputStreamWriter out = null;
    Date versDateTime = asOfDateTime;
    ObjectProfile objProfile = null;//from   w w  w  . j  a  v a  2  s . co m
    PipedWriter pw = null;
    PipedReader pr = null;
    try {
        pw = new PipedWriter();
        pr = new PipedReader(pw);
        objProfile = m_access.getObjectProfile(context, PID, asOfDateTime);
        if (objProfile != null) {
            // Object Profile found.
            // Serialize the ObjectProfile object into XML
            new ProfileSerializerThread(context, PID, objProfile, versDateTime, pw).start();
            if (xml) {
                // Return results as raw XML
                response.setContentType(CONTENT_TYPE_XML);

                // Insures stream read from PipedReader correctly translates
                // utf-8
                // encoded characters to OutputStreamWriter.
                out = new OutputStreamWriter(response.getOutputStream(), "UTF-8");
                char[] buf = new char[BUF];
                int len = 0;
                while ((len = pr.read(buf, 0, BUF)) != -1) {
                    out.write(buf, 0, len);
                }
                out.flush();
            } else {
                // Transform results into an html table
                response.setContentType(CONTENT_TYPE_HTML);
                out = new OutputStreamWriter(response.getOutputStream(), "UTF-8");
                File xslFile = new File(m_server.getHomeDir(), "access/viewObjectProfile.xslt");
                Templates template = XmlTransformUtility.getTemplates(xslFile);
                Transformer transformer = template.newTransformer();
                transformer.setParameter("fedora", context.getEnvironmentValue(FEDORA_APP_CONTEXT_NAME));
                transformer.transform(new StreamSource(pr), new StreamResult(out));
            }
            out.flush();

        } else {
            throw new GeneralException("No object profile returned");
        }
    } catch (ServerException e) {
        throw e;
    } catch (Throwable th) {
        String message = "Error getting object profile";
        logger.error(message, th);
        throw new GeneralException(message, th);
    } finally {
        try {
            if (pr != null) {
                pr.close();
            }
            if (out != null) {
                out.close();
            }
        } catch (Throwable th) {
            String message = "Error closing output";
            logger.error(message, th);
            throw new StreamIOException(message);
        }
    }
}

---

From source file:org.lockss.util.TestStreamUtil.java

public void testReadCharShortRead() throws Exception {
    char[] snd1 = { '0', '1', 0, '3' };
    final int len = 12;
    final char[] buf = new char[len];
    PipedWriter outs = new PipedWriter();
    final Reader ins = new PipedReader(outs);
    final Exception[] ex = { null };
    final int[] res = { 0 };
    Thread th = new Thread() {
        public void run() {
            try {
                res[0] = StreamUtil.readChars(ins, buf, len);
                StreamUtil.readChars(ins, buf, len);
            } catch (IOException e) {
                ex[0] = e;//from  ww  w  .j ava  2s  . c om
            }
        }
    };
    th.start();
    outs.write(snd1);
    outs.close();
    th.join();

    assertEquals(snd1.length, res[0]);
    assertEquals(null, ex[0]);
}

---

From source file:org.lockss.util.TestStreamUtil.java

public void testReadCharMultipleRead() throws Exception {
    char[] snd1 = { '0', '1', 0, '3' };
    char[] snd2 = { '4', '5', '6', '7', '8', '9', 'a', 'b' };
    char[] exp = { '0', '1', 0, '3', '4', '5', '6', '7', '8', '9', 'a', 'b' };
    final int len = exp.length;
    final char[] buf = new char[len];
    PipedWriter outs = new PipedWriter();
    final Reader ins = new PipedReader(outs);
    final Exception[] ex = { null };
    final int[] res = { 0 };
    Thread th = new Thread() {
        public void run() {
            try {
                res[0] = StreamUtil.readChars(ins, buf, len);
            } catch (IOException e) {
                ex[0] = e;/*from ww  w .j a va 2 s  . c  o  m*/
            }
        }
    };
    th.start();
    outs.write(snd1);
    TimerUtil.guaranteedSleep(100);
    outs.write(snd2);
    outs.flush();
    th.join();

    assertEquals(exp, buf);
    assertEquals(len, res[0]);
    assertNull(ex[0]);
    outs.close();
}

---

From source file:sadl.utils.IoUtils.java

public static Pair<TimedInput, TimedInput> readTrainTestFile(Path trainTestFile,
        Function<Reader, TimedInput> f) {
    try (BufferedReader br = Files.newBufferedReader(trainTestFile);
            PipedWriter trainWriter = new PipedWriter();
            PipedReader trainReader = new PipedReader(trainWriter);
            PipedWriter testWriter = new PipedWriter();
            PipedReader testReader = new PipedReader(testWriter)) {
        String line = "";
        final ExecutorService ex = Executors.newFixedThreadPool(2);
        final Future<TimedInput> trainWorker = ex.submit(() -> f.apply(trainReader));
        final Future<TimedInput> testWorker = ex.submit(() -> f.apply(testReader));
        ex.shutdown();/*from w  w w . j  a  v a  2 s .  c o  m*/
        boolean writeTrain = true;
        while ((line = br.readLine()) != null) {
            if (line.startsWith(SmacDataGenerator.TRAIN_TEST_SEP)) {
                writeTrain = false;
                trainWriter.close();
                continue;
            }
            if (writeTrain) {
                trainWriter.write(line);
                trainWriter.write('\n');
            } else {
                testWriter.write(line);
                testWriter.write('\n');
            }
        }
        testWriter.close();
        ex.shutdown();
        if (writeTrain) {
            trainWriter.close();
            ex.shutdownNow();
            throw new IOException("The provided file " + trainTestFile + " does not contain the separator "
                    + SmacDataGenerator.TRAIN_TEST_SEP);
        }
        final Pair<TimedInput, TimedInput> result = Pair.of(trainWorker.get(), testWorker.get());
        return result;
    } catch (final IOException | InterruptedException | ExecutionException e) {
        logger.error("Unexpected exception!", e);
    }
    return null;
}

---

• «
• 1
• 2
• »