Example usage for java.io PipedReader read

Introduction

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

Prototype

public synchronized int read(char cbuf[], int off, int len) throws IOException 

Source Link

Document

Reads up to len characters of data from this piped stream into an array of characters.

Usage

From source file:Main.java

public static void main(String[] args) {
    PipedWriter writer = new PipedWriter();
    PipedReader reader = new PipedReader();

    try {//from   w  w  w  .  j av a 2 s . co m
        // connect the reader and the writer
        reader.connect(writer);

        writer.write(70);
        writer.write(71);

        // read into a char array
        char[] b = new char[2];
        reader.read(b, 0, 2);

        // print the char array
        for (int i = 0; i < 2; i++) {
            System.out.println(b[i]);
        }

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

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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  ww .  j a  va  2  s  .  c  om*/
    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);
        }
    }
}

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