Example usage for java.util.zip Deflater BEST_COMPRESSION

Introduction

In this page you can find the example usage for java.util.zip Deflater BEST_COMPRESSION.

Prototype

int BEST_COMPRESSION

To view the source code for java.util.zip Deflater BEST_COMPRESSION.

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Document

Compression level for best compression.

Usage

From source file:com.uber.hoodie.common.TestRawTripPayload.java

private byte[] compressData(String jsonData) throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    DeflaterOutputStream dos = new DeflaterOutputStream(baos, new Deflater(Deflater.BEST_COMPRESSION), true);
    try {//www  .ja  v a2 s .  co m
        dos.write(jsonData.getBytes());
    } finally {
        dos.flush();
        dos.close();
    }
    return baos.toByteArray();
}

---

From source file:org.syncope.core.scheduling.ReportJob.java

@Override
public void execute(final JobExecutionContext context) throws JobExecutionException {

    Report report = reportDAO.find(reportId);
    if (report == null) {
        throw new JobExecutionException("Report " + reportId + " not found");
    }// w ww.j ava 2 s .  c o  m

    // 1. create execution
    ReportExec execution = new ReportExec();
    execution.setStatus(ReportExecStatus.STARTED);
    execution.setStartDate(new Date());
    execution.setReport(report);
    execution = reportExecDAO.save(execution);

    // 2. define a SAX handler for generating result as XML
    TransformerHandler handler;

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ZipOutputStream zos = new ZipOutputStream(baos);
    zos.setLevel(Deflater.BEST_COMPRESSION);
    try {
        SAXTransformerFactory transformerFactory = (SAXTransformerFactory) SAXTransformerFactory.newInstance();
        handler = transformerFactory.newTransformerHandler();
        Transformer serializer = handler.getTransformer();
        serializer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
        serializer.setOutputProperty(OutputKeys.INDENT, "yes");

        // a single ZipEntry in the ZipOutputStream
        zos.putNextEntry(new ZipEntry(report.getName()));

        // streaming SAX handler in a compressed byte array stream
        handler.setResult(new StreamResult(zos));
    } catch (Exception e) {
        throw new JobExecutionException("While configuring for SAX generation", e, true);
    }

    execution.setStatus(ReportExecStatus.RUNNING);
    execution = reportExecDAO.save(execution);

    ConfigurableListableBeanFactory beanFactory = ApplicationContextManager.getApplicationContext()
            .getBeanFactory();

    // 3. actual report execution
    StringBuilder reportExecutionMessage = new StringBuilder();
    StringWriter exceptionWriter = new StringWriter();
    try {
        // report header
        handler.startDocument();
        AttributesImpl atts = new AttributesImpl();
        atts.addAttribute("", "", ATTR_NAME, XSD_STRING, report.getName());
        handler.startElement("", "", ELEMENT_REPORT, atts);

        // iterate over reportlet instances defined for this report
        for (ReportletConf reportletConf : report.getReportletConfs()) {
            Class reportletClass = null;
            try {
                reportletClass = Class.forName(reportletConf.getReportletClassName());
            } catch (ClassNotFoundException e) {
                LOG.error("Reportlet class not found: {}", reportletConf.getReportletClassName(), e);

            }

            if (reportletClass != null) {
                Reportlet autowired = (Reportlet) beanFactory.createBean(reportletClass,
                        AbstractBeanDefinition.AUTOWIRE_BY_TYPE, false);
                autowired.setConf(reportletConf);

                // invoke reportlet
                try {
                    autowired.extract(handler);
                } catch (Exception e) {
                    execution.setStatus(ReportExecStatus.FAILURE);

                    Throwable t = e instanceof ReportException ? e.getCause() : e;
                    exceptionWriter.write(t.getMessage() + "\n\n");
                    t.printStackTrace(new PrintWriter(exceptionWriter));
                    reportExecutionMessage.append(exceptionWriter.toString()).append("\n==================\n");
                }
            }
        }

        // report footer
        handler.endElement("", "", ELEMENT_REPORT);
        handler.endDocument();

        if (!ReportExecStatus.FAILURE.name().equals(execution.getStatus())) {

            execution.setStatus(ReportExecStatus.SUCCESS);
        }
    } catch (Exception e) {
        execution.setStatus(ReportExecStatus.FAILURE);

        exceptionWriter.write(e.getMessage() + "\n\n");
        e.printStackTrace(new PrintWriter(exceptionWriter));
        reportExecutionMessage.append(exceptionWriter.toString());

        throw new JobExecutionException(e, true);
    } finally {
        try {
            zos.closeEntry();
            zos.close();
            baos.close();
        } catch (IOException e) {
            LOG.error("While closing StreamResult's backend", e);
        }

        execution.setExecResult(baos.toByteArray());
        execution.setMessage(reportExecutionMessage.toString());
        execution.setEndDate(new Date());
        reportExecDAO.save(execution);
    }
}

---

From source file:org.apache.syncope.core.logic.report.ReportJobDelegate.java

@Transactional
public void execute(final String reportKey) throws JobExecutionException {
    Report report = reportDAO.find(reportKey);
    if (report == null) {
        throw new JobExecutionException("Report " + reportKey + " not found");
    }//from w ww .  j  a  va2s . c o m

    if (!report.isActive()) {
        LOG.info("Report {} not active, aborting...", reportKey);
        return;
    }

    // 1. create execution
    ReportExec execution = entityFactory.newEntity(ReportExec.class);
    execution.setStatus(ReportExecStatus.STARTED);
    execution.setStart(new Date());
    execution.setReport(report);
    execution = reportExecDAO.save(execution);

    report.add(execution);
    report = reportDAO.save(report);

    // 2. define a SAX handler for generating result as XML
    TransformerHandler handler;

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ZipOutputStream zos = new ZipOutputStream(baos);
    zos.setLevel(Deflater.BEST_COMPRESSION);
    try {
        SAXTransformerFactory tFactory = (SAXTransformerFactory) SAXTransformerFactory.newInstance();
        tFactory.setFeature(javax.xml.XMLConstants.FEATURE_SECURE_PROCESSING, true);
        handler = tFactory.newTransformerHandler();
        Transformer serializer = handler.getTransformer();
        serializer.setOutputProperty(OutputKeys.ENCODING, SyncopeConstants.DEFAULT_ENCODING);
        serializer.setOutputProperty(OutputKeys.INDENT, "yes");

        // a single ZipEntry in the ZipOutputStream
        zos.putNextEntry(new ZipEntry(report.getName()));

        // streaming SAX handler in a compressed byte array stream
        handler.setResult(new StreamResult(zos));
    } catch (Exception e) {
        throw new JobExecutionException("While configuring for SAX generation", e, true);
    }

    execution.setStatus(ReportExecStatus.RUNNING);
    execution = reportExecDAO.save(execution);

    // 3. actual report execution
    StringBuilder reportExecutionMessage = new StringBuilder();
    try {
        // report header
        handler.startDocument();
        AttributesImpl atts = new AttributesImpl();
        atts.addAttribute("", "", ReportXMLConst.ATTR_NAME, ReportXMLConst.XSD_STRING, report.getName());
        handler.startElement("", "", ReportXMLConst.ELEMENT_REPORT, atts);

        // iterate over reportlet instances defined for this report
        for (ReportletConf reportletConf : report.getReportletConfs()) {
            Class<? extends Reportlet> reportletClass = implementationLookup
                    .getReportletClass(reportletConf.getClass());
            if (reportletClass == null) {
                LOG.warn("Could not find matching reportlet for {}", reportletConf.getClass());
            } else {
                // fetch (or create) reportlet
                Reportlet reportlet;
                if (ApplicationContextProvider.getBeanFactory().containsSingleton(reportletClass.getName())) {
                    reportlet = (Reportlet) ApplicationContextProvider.getBeanFactory()
                            .getSingleton(reportletClass.getName());
                } else {
                    reportlet = (Reportlet) ApplicationContextProvider.getBeanFactory()
                            .createBean(reportletClass, AbstractBeanDefinition.AUTOWIRE_BY_TYPE, false);
                    ApplicationContextProvider.getBeanFactory().registerSingleton(reportletClass.getName(),
                            reportlet);
                }

                // invoke reportlet
                try {
                    reportlet.extract(reportletConf, handler);
                } catch (Throwable t) {
                    LOG.error("While executing reportlet {} for report {}", reportlet, reportKey, t);

                    execution.setStatus(ReportExecStatus.FAILURE);

                    Throwable effective = t instanceof ReportException ? t.getCause() : t;
                    reportExecutionMessage.append(ExceptionUtils2.getFullStackTrace(effective))
                            .append("\n==================\n");
                }
            }
        }

        // report footer
        handler.endElement("", "", ReportXMLConst.ELEMENT_REPORT);
        handler.endDocument();

        if (!ReportExecStatus.FAILURE.name().equals(execution.getStatus())) {
            execution.setStatus(ReportExecStatus.SUCCESS);
        }
    } catch (Exception e) {
        execution.setStatus(ReportExecStatus.FAILURE);
        reportExecutionMessage.append(ExceptionUtils2.getFullStackTrace(e));

        throw new JobExecutionException(e, true);
    } finally {
        try {
            zos.closeEntry();
            IOUtils.closeQuietly(zos);
            IOUtils.closeQuietly(baos);
        } catch (IOException e) {
            LOG.error("While closing StreamResult's backend", e);
        }

        execution.setExecResult(baos.toByteArray());
        execution.setMessage(reportExecutionMessage.toString());
        execution.setEnd(new Date());
        reportExecDAO.save(execution);
    }
}

---

From source file:org.apache.syncope.core.report.ReportJob.java

@SuppressWarnings("rawtypes")
@Override//  ww w  . j  a v a2 s  .co m
public void execute(final JobExecutionContext context) throws JobExecutionException {
    Report report = reportDAO.find(reportId);
    if (report == null) {
        throw new JobExecutionException("Report " + reportId + " not found");
    }

    // 1. create execution
    ReportExec execution = new ReportExec();
    execution.setStatus(ReportExecStatus.STARTED);
    execution.setStartDate(new Date());
    execution.setReport(report);
    execution = reportExecDAO.save(execution);

    report.addExec(execution);
    report = reportDAO.save(report);

    // 2. define a SAX handler for generating result as XML
    TransformerHandler handler;

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ZipOutputStream zos = new ZipOutputStream(baos);
    zos.setLevel(Deflater.BEST_COMPRESSION);
    try {
        SAXTransformerFactory tFactory = (SAXTransformerFactory) SAXTransformerFactory.newInstance();
        handler = tFactory.newTransformerHandler();
        Transformer serializer = handler.getTransformer();
        serializer.setOutputProperty(OutputKeys.ENCODING, SyncopeConstants.DEFAULT_ENCODING);
        serializer.setOutputProperty(OutputKeys.INDENT, "yes");

        // a single ZipEntry in the ZipOutputStream
        zos.putNextEntry(new ZipEntry(report.getName()));

        // streaming SAX handler in a compressed byte array stream
        handler.setResult(new StreamResult(zos));
    } catch (Exception e) {
        throw new JobExecutionException("While configuring for SAX generation", e, true);
    }

    execution.setStatus(ReportExecStatus.RUNNING);
    execution = reportExecDAO.save(execution);

    // 3. actual report execution
    StringBuilder reportExecutionMessage = new StringBuilder();
    StringWriter exceptionWriter = new StringWriter();
    try {
        // report header
        handler.startDocument();
        AttributesImpl atts = new AttributesImpl();
        atts.addAttribute("", "", ReportXMLConst.ATTR_NAME, ReportXMLConst.XSD_STRING, report.getName());
        handler.startElement("", "", ReportXMLConst.ELEMENT_REPORT, atts);

        // iterate over reportlet instances defined for this report
        for (ReportletConf reportletConf : report.getReportletConfs()) {
            Class<Reportlet> reportletClass = dataBinder
                    .findReportletClassHavingConfClass(reportletConf.getClass());
            if (reportletClass != null) {
                Reportlet autowired = (Reportlet) ApplicationContextProvider.getBeanFactory()
                        .createBean(reportletClass, AbstractBeanDefinition.AUTOWIRE_BY_TYPE, false);
                autowired.setConf(reportletConf);

                // invoke reportlet
                try {
                    autowired.extract(handler);
                } catch (Exception e) {
                    execution.setStatus(ReportExecStatus.FAILURE);

                    Throwable t = e instanceof ReportException ? e.getCause() : e;
                    reportExecutionMessage.append(ExceptionUtil.getFullStackTrace(t))
                            .append("\n==================\n");
                }
            }
        }

        // report footer
        handler.endElement("", "", ReportXMLConst.ELEMENT_REPORT);
        handler.endDocument();

        if (!ReportExecStatus.FAILURE.name().equals(execution.getStatus())) {
            execution.setStatus(ReportExecStatus.SUCCESS);
        }
    } catch (Exception e) {
        execution.setStatus(ReportExecStatus.FAILURE);
        reportExecutionMessage.append(ExceptionUtil.getFullStackTrace(e));

        throw new JobExecutionException(e, true);
    } finally {
        try {
            zos.closeEntry();
            IOUtils.closeQuietly(zos);
            IOUtils.closeQuietly(baos);
        } catch (IOException e) {
            LOG.error("While closing StreamResult's backend", e);
        }

        execution.setExecResult(baos.toByteArray());
        execution.setMessage(reportExecutionMessage.toString());
        execution.setEndDate(new Date());
        reportExecDAO.save(execution);
    }
}

---

From source file:org.getspout.spoutapi.packet.PacketCustomBlockChunkOverride.java

@Override
public void compress() {
    if (!compressed) {
        if (data != null && hasData) {
            Deflater deflater = new Deflater();
            deflater.setInput(data);/* www  . j  a v  a 2  s .com*/
            deflater.setLevel(Deflater.BEST_COMPRESSION);
            deflater.finish();
            ByteArrayOutputStream bos = new ByteArrayOutputStream(data.length);
            byte[] buffer = new byte[1024];
            while (!deflater.finished()) {
                int bytesCompressed = deflater.deflate(buffer);
                bos.write(buffer, 0, bytesCompressed);
            }
            try {
                bos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            data = bos.toByteArray();
        }
        compressed = true;
    }
}

---

From source file:org.apache.syncope.core.logic.report.ReportJob.java

@SuppressWarnings("rawtypes")
@Override//from w w  w. ja  v a2s .c o  m
public void execute(final JobExecutionContext context) throws JobExecutionException {
    Report report = reportDAO.find(reportKey);
    if (report == null) {
        throw new JobExecutionException("Report " + reportKey + " not found");
    }

    // 1. create execution
    ReportExec execution = entityFactory.newEntity(ReportExec.class);
    execution.setStatus(ReportExecStatus.STARTED);
    execution.setStartDate(new Date());
    execution.setReport(report);
    execution = reportExecDAO.save(execution);

    report.addExec(execution);
    report = reportDAO.save(report);

    // 2. define a SAX handler for generating result as XML
    TransformerHandler handler;

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ZipOutputStream zos = new ZipOutputStream(baos);
    zos.setLevel(Deflater.BEST_COMPRESSION);
    try {
        SAXTransformerFactory tFactory = (SAXTransformerFactory) SAXTransformerFactory.newInstance();
        handler = tFactory.newTransformerHandler();
        Transformer serializer = handler.getTransformer();
        serializer.setOutputProperty(OutputKeys.ENCODING, SyncopeConstants.DEFAULT_ENCODING);
        serializer.setOutputProperty(OutputKeys.INDENT, "yes");

        // a single ZipEntry in the ZipOutputStream
        zos.putNextEntry(new ZipEntry(report.getName()));

        // streaming SAX handler in a compressed byte array stream
        handler.setResult(new StreamResult(zos));
    } catch (Exception e) {
        throw new JobExecutionException("While configuring for SAX generation", e, true);
    }

    execution.setStatus(ReportExecStatus.RUNNING);
    execution = reportExecDAO.save(execution);

    // 3. actual report execution
    StringBuilder reportExecutionMessage = new StringBuilder();
    try {
        // report header
        handler.startDocument();
        AttributesImpl atts = new AttributesImpl();
        atts.addAttribute("", "", ReportXMLConst.ATTR_NAME, ReportXMLConst.XSD_STRING, report.getName());
        handler.startElement("", "", ReportXMLConst.ELEMENT_REPORT, atts);

        // iterate over reportlet instances defined for this report
        for (ReportletConf reportletConf : report.getReportletConfs()) {
            Class<Reportlet> reportletClass = dataBinder
                    .findReportletClassHavingConfClass(reportletConf.getClass());
            if (reportletClass != null) {
                Reportlet<ReportletConf> autowired = (Reportlet<ReportletConf>) ApplicationContextProvider
                        .getBeanFactory()
                        .createBean(reportletClass, AbstractBeanDefinition.AUTOWIRE_BY_TYPE, false);
                autowired.setConf(reportletConf);

                // invoke reportlet
                try {
                    autowired.extract(handler);
                } catch (Exception e) {
                    execution.setStatus(ReportExecStatus.FAILURE);

                    Throwable t = e instanceof ReportException ? e.getCause() : e;
                    reportExecutionMessage.append(ExceptionUtils2.getFullStackTrace(t))
                            .append("\n==================\n");
                }
            }
        }

        // report footer
        handler.endElement("", "", ReportXMLConst.ELEMENT_REPORT);
        handler.endDocument();

        if (!ReportExecStatus.FAILURE.name().equals(execution.getStatus())) {
            execution.setStatus(ReportExecStatus.SUCCESS);
        }
    } catch (Exception e) {
        execution.setStatus(ReportExecStatus.FAILURE);
        reportExecutionMessage.append(ExceptionUtils2.getFullStackTrace(e));

        throw new JobExecutionException(e, true);
    } finally {
        try {
            zos.closeEntry();
            IOUtils.closeQuietly(zos);
            IOUtils.closeQuietly(baos);
        } catch (IOException e) {
            LOG.error("While closing StreamResult's backend", e);
        }

        execution.setExecResult(baos.toByteArray());
        execution.setMessage(reportExecutionMessage.toString());
        execution.setEndDate(new Date());
        reportExecDAO.save(execution);
    }
}

---

From source file:org.getspout.spoutapi.packet.PacketAddonData.java

@Override
public void compress() {
    if (!compressed) {
        if (data != null) {
            Deflater deflater = new Deflater();
            deflater.setInput(data);//from   w  ww  . ja  va 2 s.  c  om
            deflater.setLevel(Deflater.BEST_COMPRESSION);
            deflater.finish();
            ByteArrayOutputStream bos = new ByteArrayOutputStream(data.length);
            byte[] buffer = new byte[1024];
            while (!deflater.finished()) {
                int bytesCompressed = deflater.deflate(buffer);
                bos.write(buffer, 0, bytesCompressed);
            }
            try {
                bos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            data = bos.toByteArray();
        }
        compressed = true;
    }
}

---

From source file:com.alibaba.citrus.service.requestcontext.session.valueencoder.AbstractSessionValueEncoder.java

private byte[] compress(byte[] data) throws SessionValueEncoderException {
    if (!doCompress()) {
        return data;
    }//from   w  w w  .  jav  a2s.c om

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    Deflater def = new Deflater(Deflater.BEST_COMPRESSION, false);
    DeflaterOutputStream dos = new DeflaterOutputStream(baos, def);

    try {
        dos.write(data);
    } catch (Exception e) {
        throw new SessionValueEncoderException(e);
    } finally {
        try {
            dos.close();
        } catch (IOException e) {
        }

        def.end();
    }

    return baos.toByteArray();
}

---

From source file:org.getspout.spout.packet.PacketAddonData.java

public void compress() {
    if (!compressed) {
        if (data != null) {
            Deflater deflater = new Deflater();
            deflater.setInput(data);//w  w  w  .ja  va 2 s. com
            deflater.setLevel(Deflater.BEST_COMPRESSION);
            deflater.finish();
            ByteArrayOutputStream bos = new ByteArrayOutputStream(data.length);
            byte[] buffer = new byte[1024];
            while (!deflater.finished()) {
                int bytesCompressed = deflater.deflate(buffer);
                bos.write(buffer, 0, bytesCompressed);
            }
            try {
                bos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            data = bos.toByteArray();
        }
        compressed = true;
    }
}

---

From source file:com.asual.lesscss.ResourcePackage.java

private static byte[] deflate(byte[] input) throws IOException {
    Deflater deflater = new Deflater();
    deflater.setLevel(Deflater.BEST_COMPRESSION);
    deflater.setInput(input);//from  ww  w .  j  a  v a  2  s  . co m
    deflater.finish();
    ByteArrayOutputStream baos = new ByteArrayOutputStream(input.length);
    byte[] buf = new byte[1024];
    while (!deflater.finished()) {
        int count = deflater.deflate(buf);
        baos.write(buf, 0, count);
    }
    baos.close();
    return baos.toByteArray();
}

---

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