Example usage for javax.ejb LockType WRITE

Introduction

In this page you can find the example usage for javax.ejb LockType WRITE.

Prototype

LockType WRITE

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Document

For exclusive access to the bean instance.

Usage

From source file:io.hops.hopsworks.common.security.OpensslOperations.java

@Lock(LockType.WRITE)
public String getSubjectFromCSR(String csr) throws IOException {
    File csrFile = File.createTempFile(System.getProperty("java.io.tmpdir"), ".csr");
    FileUtils.writeStringToFile(csrFile, csr);
    List<String> cmds = new ArrayList<>();
    //openssl req -in certs-dir/hops-site-certs/csr.pem -noout -subject
    cmds.add(OPENSSL);/*from w w  w. ja  va2 s.  c o  m*/
    cmds.add("req");
    cmds.add("-in");
    cmds.add(csrFile.getAbsolutePath());
    cmds.add("-noout");
    cmds.add("-subject");

    return executeCommand(cmds, true);
}

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From source file:org.javabeanstack.data.DBManager.java

/**
 * Crea un entitymanager dentro de un Map utiliza la unidad de persistencia 
 * y el threadid o sessionid del usuario como clave
 * /*from  ww w .  j av a 2 s  .  co  m*/
 * @param key  id thread o sessionid del usuario
 * @return el entity manager creado.
 */
@Override
@TransactionAttribute(TransactionAttributeType.SUPPORTS)
@Lock(LockType.WRITE)
public EntityManager createEntityManager(String key) {
    EntityManager em;
    try {
        String persistentUnit = key.substring(0, key.indexOf(':')).toLowerCase();
        em = (EntityManager) context.lookup("java:comp/env/persistence/" + persistentUnit);
        Data data = new Data();
        data.em = em;
        entityManagers.put(key, data);
        LOGGER.debug("--------- Se ha creado un nuevo EntityManager --------- " + key);
        return em;
    } catch (Exception ex) {
        ErrorManager.showError(ex, LOGGER);
    }
    return null;
}

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From source file:org.javabeanstack.data.DBManager.java

/**
 *  Ejecuta rollback de una transaccin 
 */
@Override
@Lock(LockType.WRITE)
public void rollBack() {
    context.setRollbackOnly();
}

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From source file:org.niord.core.mail.ScheduledMailService.java

/**
 * Called every minute to process scheduled mails
 *//*  w w  w. j a va2s  .  co  m*/
@Schedule(persistent = false, second = "24", minute = "*", hour = "*")
@Lock(LockType.WRITE)
public void sendPendingMails() {

    // Send at most "maxMailsPerMinute" mails at a time
    List<Integer> scheduledMailIds = getPendingMails().stream().limit(maxMailsPerMinute).map(BaseEntity::getId)
            .collect(Collectors.toList());

    if (!scheduledMailIds.isEmpty()) {

        log.info("Processing " + scheduledMailIds.size() + " pending scheduled mails");

        List<MailSenderTask> tasks = scheduledMailIds.stream().map(id -> new MailSenderTask(mailService, id))
                .collect(Collectors.toList());

        try {
            managedExecutorService.invokeAll(tasks);
        } catch (InterruptedException e) {
            log.error("Error sending scheduled emails: " + scheduledMailIds, e);
        }
    }
}

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From source file:org.niord.core.mail.ScheduledMailService.java

/**
 * Called every day to delete old scheduled mails.
 *
 * Note to self: It would have been faster to execute a "delete from ScheduledMail where..." statement.
 * However, this will fail because of a missing mail - recipient "delete on cascade" FK constraint.
 * Using JPAs CascadeType.ALL for the relation does NOT work in this case.
 *//*  w w  w . j  av  a2s  .c  o m*/
@Schedule(persistent = false, second = "48", minute = "28", hour = "05")
@Lock(LockType.WRITE)
@TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
private void deleteExpiredMails() {

    // If expiryDate is 0 (actually, non-positive), never delete mails
    if (mailDeleteAfterDays <= 0) {
        return;
    }

    Date expiryDate = TimeUtils.add(new Date(), Calendar.DATE, -mailDeleteAfterDays);

    List<Integer> ids = em.createNamedQuery("ScheduledMail.findExpiredMails", Integer.class)
            .setParameter("expiryDate", expiryDate).getResultList();

    if (!ids.isEmpty()) {
        long t0 = System.currentTimeMillis();
        try {
            for (int x = 0; x < ids.size(); x++) {
                ScheduledMail mail = getScheduledMail(ids.get(x));
                if (mail != null) {
                    em.remove(mail);
                    if ((x % 50) == 0) {
                        em.flush();
                    }
                }
            }

            log.info("Deleted " + ids.size() + " scheduled mails older than " + expiryDate + " in "
                    + (System.currentTimeMillis() - t0) + " ms");

        } catch (Exception e) {
            log.error("Failed deleting scheduled mails older than " + expiryDate);
        }
    }
}

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From source file:org.niord.core.settings.SettingsService.java

/**
 * Updates the database value of the given setting
 * @param template the setting to update
 * @return the updated setting//from   w w  w  .ja v  a  2  s.c o m
 */
@Lock(LockType.WRITE)
public Setting set(Setting template) {
    Setting setting = em.find(Setting.class, template.getKey());
    if (setting == null) {
        throw new IllegalArgumentException("Non-existing setting " + template.getKey());
    }

    // Update the DB
    setting.setValue(template.getValue());
    setting = em.merge(setting);

    // Invalidate the cache
    evictFromCache(setting.getKey());

    return setting;
}

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From source file:org.rhq.enterprise.server.auth.prefs.SubjectPreferencesCacheBean.java

@Override
@Lock(LockType.WRITE)
public void setUserProperty(int subjectId, String propertyName, String value) {
    load(subjectId);/*w w  w.  j a  v  a 2s.c  o  m*/

    Configuration config = subjectPreferences.get(subjectId);
    if (config == null) {
        return;
    }

    PropertySimple prop = config.getSimple(propertyName);
    if (prop == null) {
        prop = new PropertySimple(propertyName, value);
        config.put(prop); // add new to collection
        mergeProperty(prop);
    } else if (prop.getStringValue() == null || !prop.getStringValue().equals(value)) {
        prop.setStringValue(value);
        mergeProperty(prop);
    }
}

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From source file:org.rhq.enterprise.server.auth.prefs.SubjectPreferencesCacheBean.java

@Override
@Lock(LockType.WRITE)
public void unsetUserProperty(int subjectId, String propertyName) {
    load(subjectId);/* w w w .  j a v a  2s.  c  o  m*/

    Configuration config = subjectPreferences.get(subjectId);
    if (config == null) {
        return;
    }

    Property property = config.remove(propertyName);
    // it's possible property was already removed, and thus this operation becomes a no-op to the backing store
    if (property != null && property.getId() != 0) {
        try {
            configurationManager.deleteProperties(new int[] { property.getId() });
        } catch (Throwable t) {
            log.error("Could not remove " + property, t);
        }
    }
}

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From source file:org.rhq.enterprise.server.auth.prefs.SubjectPreferencesCacheBean.java

@Override
@Lock(LockType.WRITE)
public void clearConfiguration(int subjectId) {
    if (log.isTraceEnabled()) {
        log.trace("Removing PreferencesCache For " + subjectId);
    }// w w w.  j  a  v a  2s . com
    subjectPreferences.remove(subjectId);
}

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