Example usage for java.io ObjectOutput writeObject

Introduction

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

Prototype

public void writeObject(Object obj) throws IOException;

Source Link

Document

Write an object to the underlying storage or stream.

Usage

From source file:org.jfree.data.xy.junit.DefaultXYZDatasetTest.java

/**
 * Serialize an instance, restore it, and check for equality.
 *///from w  w  w .  ja va  2s.c  om
public void testSerialization() {

    DefaultXYZDataset d1 = new DefaultXYZDataset();
    DefaultXYZDataset d2 = null;

    try {
        ByteArrayOutputStream buffer = new ByteArrayOutputStream();
        ObjectOutput out = new ObjectOutputStream(buffer);
        out.writeObject(d1);
        out.close();

        ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(buffer.toByteArray()));
        d2 = (DefaultXYZDataset) in.readObject();
        in.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
    assertEquals(d1, d2);

    // try a dataset with some content...
    double[] x1 = new double[] { 1.0, 2.0, 3.0 };
    double[] y1 = new double[] { 4.0, 5.0, 6.0 };
    double[] z1 = new double[] { 7.0, 8.0, 9.0 };
    double[][] data1 = new double[][] { x1, y1, z1 };
    d1.addSeries("S1", data1);
    try {
        ByteArrayOutputStream buffer = new ByteArrayOutputStream();
        ObjectOutput out = new ObjectOutputStream(buffer);
        out.writeObject(d1);
        out.close();

        ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(buffer.toByteArray()));
        d2 = (DefaultXYZDataset) in.readObject();
        in.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
    assertEquals(d1, d2);

}

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From source file:org.lexgrid.valuesets.helper.compiler.FileSystemCachingValueSetDefinitionCompilerDecorator.java

/**
 * Persist coded node set.// w  w w . j a v  a 2 s . co m
 * 
 * @param md5 the md5
 * @param cns the cns
 * 
 * @throws Exception the exception
 */
protected void persistCodedNodeSet(String md5, CodedNodeSet cns) {
    try {
        File cachedCnsFile = new File(this.getDiskStorePath() + File.separator + this.getFileName(md5));

        if (cachedCnsFile.exists()) {
            LoggerFactory.getLogger().info("Compiled Value Set Definition already cached.");

            return;
        }

        this.deleteOldestFile();

        ObjectOutput out = new ObjectOutputStream(
                new FileOutputStream(this.getDiskStorePath() + File.separator + this.getFileName(md5)));
        out.writeObject(cns);
        out.close();
    } catch (Exception e) {
        LoggerFactory.getLogger().warn("There was an error persisting the Compiled Value Set Definition."
                + " Caching will not be used for this Value Set Definition.", e);
    }
}

---

From source file:com.sun.j2ee.blueprints.taglibs.smart.ClientStateTag.java

public int doEndTag() throws JspTagException {
    if (imageURL == null && buttonText == null) {
        throw new JspTagException(
                "ClientStateTag error: either an " + "imageURL or buttonText attribute must be specified.");
    }// w  ww  .j  av  a2s  .  c om
    HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();
    StringBuffer buffer = new StringBuffer();
    buffer.append("<form method=\"POST\" action=\"" + targetURL + "\">");
    // insert any parameters that may have been added via sub tags
    if (parameters != null) {
        Iterator it = parameters.keySet().iterator();
        // put the request attributes stored in the session in the request
        while (it.hasNext()) {
            String key = (String) it.next();
            String value = (String) parameters.get(key);
            buffer.append(" <input type=\"hidden\" name=\"" + key + "\" value=\"" + value + "\" />");
        }
    }
    String fullURL = request.getRequestURI();
    // find the url that sent us this page
    String targetURL = null;
    int lastPathSeparator = fullURL.lastIndexOf("/") + 1;
    if (lastPathSeparator != -1) {
        targetURL = fullURL.substring(lastPathSeparator, fullURL.length());
    }
    buffer.append(" <input type=\"hidden\" name=\"referring_URL\"" + "value=\"" + targetURL + "\">");
    String referringScreen = (String) request.getSession().getAttribute(WebKeys.PREVIOUS_SCREEN);
    buffer.append(" <input type=\"hidden\" name=\"referring_screen\"" + "value=\"" + referringScreen + "\">");
    buffer.append(" <input type=\"hidden\" name=\"cacheId\"" + "value=\"" + cacheId + "\">");
    // check the request for previous parameters
    Map params = (Map) request.getParameterMap();
    if (!params.isEmpty() && encodeRequestParameters) {
        Iterator it = params.entrySet().iterator();
        // copy in the request parameters stored
        while (it.hasNext()) {
            Entry entry = (Entry) it.next();
            String key = (String) entry.getKey();
            if (!key.startsWith(cacheId)) {
                String[] values = (String[]) entry.getValue();
                String valueString = values[0];
                buffer.append(" <input type=\"hidden\" name=\"" + key + "\" value=\"" + valueString + "\" />");
            }
        }
    }
    /**
      *  Now serialize the request attributes into the page (only sealizable objects are going
      *  to be processed).
      */
    if (encodeRequestAttributes) {
        // put the request attributes into tattributres
        Enumeration enumeration = request.getAttributeNames();
        while (enumeration.hasMoreElements()) {
            String key = (String) enumeration.nextElement();
            // check if we have already serialized the items
            // also don't serialize javax items because
            if (!key.startsWith(cacheId) && !key.startsWith("javax.servlet")) {
                Object value = request.getAttribute(key);
                if (serializableClass == null) {
                    try {
                        serializableClass = Class.forName("java.io.Serializable");
                    } catch (java.lang.ClassNotFoundException cnf) {
                        logger.error("ClientStateTag caught: ", cnf);
                    }
                }
                // check if seralizable
                if (serializableClass.isAssignableFrom(value.getClass())) {
                    try {
                        ByteArrayOutputStream bos = new ByteArrayOutputStream();
                        ObjectOutput out = new ObjectOutputStream(bos);
                        out.writeObject(value);
                        out.close();
                        buffer.append(" <input type=\"hidden\" name=\"" + cacheId + "_attribute_" + key
                                + "\" value=\"" + new String(Base64.encode(bos.toByteArray()), "ISO-8859-1")
                                + "\" />");
                    } catch (java.io.IOException iox) {
                        logger.error("ClientStateTag caught: ", iox);
                    }
                } else {
                    logger.info(key + " not to Serializeable");
                }
            }
        }
    } // end get attributes
      // now put the link in
    if (imageURL != null) {
        buffer.append(" <input alt=\"" + altText + "\" type=\"image\" " + "src=\"" + imageURL + "\"/>");
    } else {
        buffer.append(" <input alt=\"" + altText + "\"  type=\"submit\" " + "value=\"" + buttonText + "\"/>");
    }
    buffer.append("</form>");
    // write the output to the output stream
    try {
        JspWriter out = pageContext.getOut();
        out.print(buffer.toString());
    } catch (IOException ioe) {
        logger.error("ClientStateTag: Problems with writing...", ioe);
    }
    // reset everything
    parameters = null;
    altText = "";
    buttonText = null;
    imageURL = null;
    cacheId = null;
    targetURL = null;
    encodeRequestAttributes = true;
    encodeRequestParameters = true;
    serializableClass = null;
    return EVAL_PAGE;
}

---

From source file:com.github.naoghuman.cm.model.glossary.GlossaryModel.java

@Override
public void writeExternal(ObjectOutput out) throws IOException {
    out.writeLong(this.getId());
    out.writeLong(this.getGenerationTime());
    out.writeObject(StringEscapeUtils.escapeHtml4(this.getTitle()));
    out.writeObject(StringEscapeUtils.escapeHtml4(this.getDescription()));
    out.writeObject(StringEscapeUtils.escapeHtml4(this.getNotes()));
}

---

From source file:org.jfree.data.xy.junit.TableXYDatasetTest.java

/**
 * Serialize an instance, restore it, and check for equality.
 *///from w  w w  . j a v  a2  s.  c  o m
public void testSerialization() {

    DefaultTableXYDataset d1 = new DefaultTableXYDataset();
    d1.addSeries(createSeries2());
    DefaultTableXYDataset d2 = null;

    try {
        ByteArrayOutputStream buffer = new ByteArrayOutputStream();
        ObjectOutput out = new ObjectOutputStream(buffer);
        out.writeObject(d1);
        out.close();

        ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(buffer.toByteArray()));
        d2 = (DefaultTableXYDataset) in.readObject();
        in.close();
    } catch (Exception e) {
        System.out.println(e.toString());
    }
    assertEquals(d1, d2);

}

---

From source file:com.roche.iceboar.cachestorage.LocalCacheStorage.java

private void store(CacheStatus cacheStatus, String cachePath) {
    OutputStream file = null;//from  w ww  .  j a v  a  2  s. c o  m
    OutputStream buffer = null;
    ObjectOutput output = null;
    try {
        //use buffering
        file = new FileOutputStream(cachePath);
        buffer = new BufferedOutputStream(file);
        output = new ObjectOutputStream(buffer);
        output.writeObject(cacheStatus);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (output != null) {
            try {
                output.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if (buffer != null) {
            try {
                buffer.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if (file != null) {
            try {
                file.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

---

From source file:ar.edu.unicen.exa.aop.aopetstore.waf.view.taglibs.smart.ClientStateTag.java

public int doEndTag() throws JspTagException {
    HttpServletRequest request = ((HttpServletRequest) pageContext.getRequest());
    StringBuffer buffer = new StringBuffer();
    buffer.append("<form method=\"POST\" action=\"" + targetURL + "\">");
    // insert any parameters that may have been added via sub tags
    if (parameters != null) {
        Iterator<String> it = parameters.keySet().iterator();
        // put the request attributes stored in the session in the request
        while (it.hasNext()) {
            String key = it.next();
            String value = parameters.get(key);
            buffer.append(" <input type=\"hidden\" name=\"" + key + "\" value=\"" + value + "\" />");
        }/*from  www .  j a  v  a2 s  .  c  o m*/
    }
    String fullURL = request.getRequestURI();
    // find the url that sent us this page
    String targetURL = null;
    int lastPathSeparator = fullURL.lastIndexOf("/") + 1;
    if (lastPathSeparator != -1) {
        targetURL = fullURL.substring(lastPathSeparator, fullURL.length());
    }
    buffer.append(" <input type=\"hidden\" name=\"referring_URL\"" + "value=\"" + targetURL + "\">");
    String referringScreen = (String) request.getSession().getAttribute(WebKeys.PREVIOUS_SCREEN);
    buffer.append(" <input type=\"hidden\" name=\"referring_screen\"" + "value=\"" + referringScreen + "\">");
    buffer.append(" <input type=\"hidden\" name=\"cacheId\"" + "value=\"" + cacheId + "\">");
    // check the request for previous parameters
    Map<?, ?> params = (Map<?, ?>) request.getParameterMap();
    if (!params.isEmpty() && encodeRequestParameters) {
        Iterator<?> it = params.keySet().iterator();
        // copy in the request parameters stored
        while (it.hasNext()) {
            String key = (String) it.next();
            if (!key.startsWith(cacheId)) {
                String[] values = (String[]) params.get(key);
                String valueString = values[0];
                buffer.append(" <input type=\"hidden\" name=\"" + key + "\" value=\"" + valueString + "\" />");
            }
        }
    }
    /**
      *  Now serialize the request attributes into the page (only sealizable objects are going
      *  to be processed).
      */
    if (encodeRequestAttributes) {
        // put the request attributes into tattributres
        Enumeration<?> myEnumeration = request.getAttributeNames();
        while (myEnumeration.hasMoreElements()) {
            String key = (String) myEnumeration.nextElement();
            // check if we have already serialized the items
            // also don't serialize javax items because
            if (!key.startsWith(cacheId) && !key.startsWith("javax.servlet")) {
                Object value = request.getAttribute(key);
                if (serializableClass == null) {
                    try {
                        getClass();
                        serializableClass = Class.forName("java.io.Serializable");
                    } catch (java.lang.ClassNotFoundException cnf) {
                        System.err.println("ClientStateTag caught: " + cnf);
                    }
                }
                // check if seralizable
                if (serializableClass.isAssignableFrom(value.getClass())) {
                    try {
                        ByteArrayOutputStream bos = new ByteArrayOutputStream();
                        ObjectOutput out = new ObjectOutputStream(bos);
                        out.writeObject(value);
                        out.close();
                        buffer.append(" <input type=\"hidden\" name=\"" + cacheId + "_attribute_" + key
                                + "\" value=\""
                                + new String(Base64.encodeBase64(bos.toByteArray()), "ISO-8859-1") + "\" />");
                    } catch (java.io.IOException iox) {
                        System.err.println("ClientStateTag caught: " + iox);
                    }
                } else {
                    System.out.println(key + " not to Serializeable");
                }
            }

        }
    } // end get attributes
      // now put the link in
    if (imageURL != null) {
        buffer.append(" <input alt=\"" + altText + "\" type=\"image\" " + "src=\"" + imageURL + "\"/>");
    } else {
        buffer.append(" <input alt=\"" + altText + "\"  type=\"submit\" " + "value=\"" + buttonText + "\"/>");
    }
    buffer.append("</form>");
    // write the output to the output stream
    try {
        JspWriter out = pageContext.getOut();
        out.print(buffer.toString());
    } catch (IOException ioe) {
        System.err.println("ClientStateTag: Problems with writing...");
    }
    // reset everything
    parameters = null;
    altText = "";
    buttonText = null;
    imageURL = null;
    cacheId = null;
    targetURL = null;
    encodeRequestAttributes = true;
    encodeRequestParameters = true;
    serializableClass = null;
    return EVAL_PAGE;
}

---

From source file:BinaryHeapQueue.java

public void writeExternal(ObjectOutput out) throws IOException {
    out.writeObject(comparator);
    out.writeObject(elements);//from ww w  . jav  a 2  s  . co m
    out.writeInt(size);
}

---

From source file:net.openhft.chronicle.wire.benchmarks.Data.java

@Override
public void writeExternal(ObjectOutput out) throws IOException {
    out.writeDouble(price);//from  w ww  .j  a  v  a 2s  .co  m
    out.writeLong(longInt);
    out.writeInt(smallInt);
    out.writeBoolean(flag);
    out.writeObject(side);
    out.writeObject(getText());
}

---

From source file:com.github.naoghuman.abclist.model.Term.java

@Override
public void writeExternal(ObjectOutput out) throws IOException {
    out.writeLong(this.getId());
    out.writeLong(this.getGenerationTime());
    out.writeObject(this.getDescription());
    out.writeObject(this.getTitle());
}

---

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