Example usage for javax.persistence LockModeType PESSIMISTIC_WRITE

Introduction

In this page you can find the example usage for javax.persistence LockModeType PESSIMISTIC_WRITE.

Prototype

LockModeType PESSIMISTIC_WRITE

To view the source code for javax.persistence LockModeType PESSIMISTIC_WRITE.

Click Source Link

Document

Pessimistic write lock.

Usage

From source file:org.tdmx.lib.control.service.ControlJobServiceRepositoryImpl.java

@Override
@Transactional(value = "ControlDB")
public List<ControlJob> reserve(int maxJobs) {
    ControlJobSearchCriteria sc = new ControlJobSearchCriteria(new PageSpecifier(0, maxJobs));
    sc.setStatus(ControlJobStatus.NEW);//from   w  w w .  j av  a 2s.  c  om
    sc.setScheduledTimeBefore(new Date());
    List<ControlJob> result = getControlJobDao().fetch(sc, LockModeType.PESSIMISTIC_WRITE);
    for (ControlJob e : result) {
        e.setStatus(ControlJobStatus.RUN);
    }
    // we rely on the transaction finishing on exit and persisting the data without us calling dao explicitly
    // later the caller shall call createOrUpdate to persist further job changes after running the job.
    return result;
}

---

From source file:entity.service.EntryFacadeREST.java

@POST
@Path("result/{raceid}")
@Produces({ "application/json" })
public Response setRacetime(@PathParam("raceid") Integer raceid, ResultData resultData) {
    EntryPK key = new EntryPK(raceid, resultData.getRacenum());
    Entry entry = em.find(Entry.class, key, LockModeType.PESSIMISTIC_WRITE);
    if (entry.getStatus().equals("CHECKED") && entry.getRacetime() == null) {
        entry.setFinishtime(new Date());
        entry.setRacetime(resultData.getRacetime());
        entry.applyResultmods(resultData, parameters.getResultmods());
        entry.applyRaceadjustments(parameters.getRaceadjustmentsToRace(raceid));
        entry.setStatus("FINISHED");
        em.merge(entry);/* w  w  w  .ja v  a  2  s .c o  m*/
    } else {
        JsonObject jsonMsg = JsonBuilder.getJsonMsg(
                "Az eredmny mr rgztsre kerlt vagy nem a megfelel llapotban van!",
                JsonBuilder.MsgType.WARNING, null);
        return Response.status(500).entity(jsonMsg).build();
    }
    String msg = "Eredmny rgztve: " + entry.getContestant().getName() + " (" + entry.getKey().getRacenum()
            + ") - " + Utils.simpleTimeFormat.format(entry.getRacetime());
    JsonObject jsonMsg = JsonBuilder.getJsonMsg(msg, JsonBuilder.MsgType.INFO, null);
    NotificationEndpoint.send(msg);
    return Response.ok(jsonMsg).build();
}

---

From source file:com.pinterest.rocksplicator.controller.mysql.MySQLTaskQueue.java

@Override
public boolean removeCluster(final Cluster cluster) {
    beginTransaction();//from  w w w  .j  a  va2  s .  co m
    TagEntity tagEntity = getEntityManager().find(TagEntity.class, new TagId(cluster),
            LockModeType.PESSIMISTIC_WRITE);
    try {
        if (tagEntity == null) {
            LOG.error("Cluster {} hasn't been created", cluster);
            throw new MySQLTaskQueueException();
        }
        if (tagEntity.getLocks() == 1) {
            LOG.error("Cluster {} is already locked, cannot remove.", cluster);
            throw new MySQLTaskQueueException();
        }
    } catch (MySQLTaskQueueException e) {
        getEntityManager().getTransaction().rollback();
        return false;
    }
    getEntityManager().remove(tagEntity);
    getEntityManager().getTransaction().commit();
    return true;
}

---

From source file:org.jasig.cas.ticket.registry.support.JpaLockingStrategy.java

/** {@inheritDoc} */
@Transactional(readOnly = false)/* ww w  . j a va  2  s  .  c  o m*/
public void release() {
    final Lock lock = entityManager.find(Lock.class, applicationId, LockModeType.PESSIMISTIC_WRITE);

    if (lock == null) {
        return;
    }
    // Only the current owner can release the lock
    final String owner = lock.getUniqueId();
    if (uniqueId.equals(owner)) {
        lock.setUniqueId(null);
        lock.setExpirationDate(null);
        logger.debug("Releasing {} lock held by {}.", applicationId, uniqueId);
        entityManager.persist(lock);
    } else {
        throw new IllegalStateException("Cannot release lock owned by " + owner);
    }
}

---

From source file:org.cleverbus.core.common.dao.ExternalCallDaoJpaImpl.java

@Override
@SuppressWarnings("unchecked")
public ExternalCall lockConfirmation(final ExternalCall extCall) {
    Assert.notNull(extCall, "the extCall must not be null");
    Assert.isTrue(extCall.getState() != ExternalCallStateEnum.PROCESSING,
            "the extCall must not be locked in a processing state");
    Assert.isTrue(em.contains(extCall), "the extCall must be attached");

    em.lock(extCall, LockModeType.PESSIMISTIC_WRITE);
    extCall.setState(ExternalCallStateEnum.PROCESSING);
    return extCall;
}

---

From source file:eu.clarin.cmdi.virtualcollectionregistry.VirtualCollectionRegistryMaintenanceImpl.java

protected void purgeDeletedCollections(EntityManager em, final Date nowDatePurge) {
    em.getTransaction().begin();/*ww w .ja  va2s . com*/
    TypedQuery<VirtualCollection> q = em.createNamedQuery("VirtualCollection.findAllByState",
            VirtualCollection.class);
    q.setParameter("state", VirtualCollection.State.DELETED);
    q.setParameter("date", nowDatePurge);
    q.setLockMode(LockModeType.PESSIMISTIC_WRITE);
    for (VirtualCollection vc : q.getResultList()) {
        vc.setState(VirtualCollection.State.DEAD);
        em.remove(vc);
        logger.debug("purged virtual collection (id={})", vc.getId());
    }
    em.getTransaction().commit();
}

---

From source file:fr.mby.opa.picsimpl.dao.DbProposalDao.java

@Override
public ProposalBag createBag(final ProposalBag bag, final long branchId) {
    Assert.notNull(bag, "No ProposalBag supplied !");
    Assert.isNull(bag.getId(), "Id should not be set for creation !");

    new TxCallback(this.getEmf()) {

        @Override//  w  ww.  jav  a  2 s .  co m
        // @SuppressWarnings("unchecked")
        protected void executeInTransaction(final EntityManager em) {
            // Retrieve branch
            final ProposalBranch branch = em.find(ProposalBranch.class, branchId,
                    LockModeType.PESSIMISTIC_WRITE);
            if (branch == null) {
                throw new ProposalBranchNotFoundException();
            }

            // Retrieve base bag (parent bag) and lock the row
            // final Query findParentQuery = em.createNamedQuery(ProposalBag.FIND_LAST_BRANCH_BAG);
            // findParentQuery.setParameter("branchId", branchId);
            // findParentQuery.setLockMode(LockModeType.PESSIMISTIC_WRITE);

            // Persist bag with its parent
            // final ProposalBag parentBag = Iterables.getFirst(findParentQuery.getResultList(), null);
            // bag.setBaseProposal(parentBag);
            // em.persist(bag);

            // Persist bag with its parent
            bag.setBaseProposal(branch.getHead());
            em.persist(bag);

            // Update branch head pointer
            branch.setHead(bag);
            em.merge(branch);
        }
    };

    return bag;
}

---

From source file:eu.clarin.cmdi.virtualcollectionregistry.VirtualCollectionRegistryMaintenanceImpl.java

protected void handleCollectionsInError(EntityManager em, final Date nowDateError) {
    em.getTransaction().begin();//w ww  .  j  a v  a  2  s.  c o  m
    TypedQuery<VirtualCollection> q = em.createNamedQuery("VirtualCollection.findAllByState",
            VirtualCollection.class);
    q.setParameter("state", VirtualCollection.State.ERROR);
    q.setParameter("date", nowDateError);
    q.setLockMode(LockModeType.PESSIMISTIC_WRITE);
    for (VirtualCollection vc : q.getResultList()) {
        VirtualCollection.State currentState = vc.getState();
        logger.info("Found [{}] in error state.", vc.getName(), currentState);
        //TODO: handle virtual collections in error state
    }
    em.getTransaction().commit();
}

---

From source file:com.enioka.jqm.tools.Loader.java

private void runPayload() {
    // Set thread name
    Thread.currentThread().setName(threadName);

    // One log per launch?
    if (System.out instanceof MultiplexPrintStream) {
        String fileName = StringUtils.leftPad("" + this.job.getId(), 10, "0");
        MultiplexPrintStream mps = (MultiplexPrintStream) System.out;
        mps.registerThread(String.valueOf(fileName + ".stdout.log"));
        mps = (MultiplexPrintStream) System.err;
        mps.registerThread(String.valueOf(fileName + ".stderr.log"));
    }/*w w w . j  a v a  2  s.c om*/

    EntityManager em = null;
    final Map<String, String> params;
    final JarClassLoader jobClassLoader;

    // Block needing the database
    try {
        em = Helpers.getNewEm();

        // Refresh entities from the current EM
        this.job = em.find(JobInstance.class, job.getId());
        this.node = em.find(Node.class, job.getNode().getId());

        // Log
        this.resultStatus = State.SUBMITTED;
        jqmlogger.debug("A loader/runner thread has just started for Job Instance " + job.getId() + ". Jar is: "
                + job.getJd().getJarPath() + " - class is: " + job.getJd().getJavaClassName());

        // Disabled
        if (!this.job.getJd().isEnabled()) {
            jqmlogger.info("Job Instance " + job.getId()
                    + " will actually not truly run as its Job Definition is disabled");
            em.getTransaction().begin();
            this.job.setProgress(-1);
            em.getTransaction().commit();
            resultStatus = State.ENDED;
            endOfRun();
            return;
        }

        // Parameters
        params = new HashMap<String, String>();
        for (RuntimeParameter jp : em
                .createQuery("SELECT p FROM RuntimeParameter p WHERE p.ji = :i", RuntimeParameter.class)
                .setParameter("i", job.getId()).getResultList()) {
            jqmlogger.trace("Parameter " + jp.getKey() + " - " + jp.getValue());
            params.put(jp.getKey(), jp.getValue());
        }

        // Update of the job status, dates & co
        em.getTransaction().begin();
        em.refresh(job, LockModeType.PESSIMISTIC_WRITE);
        if (!job.getState().equals(State.KILLED)) {
            // Use a query to avoid locks on FK checks (with setters, every field is updated!)
            em.createQuery(
                    "UPDATE JobInstance j SET j.executionDate = current_timestamp(), state = 'RUNNING' WHERE j.id = :i")
                    .setParameter("i", job.getId()).executeUpdate();
        }
        em.getTransaction().commit();

        jobClassLoader = this.clm.getClassloader(job, em);
    } catch (JqmPayloadException e) {
        jqmlogger.warn("Could not resolve CLASSPATH for job " + job.getJd().getApplicationName(), e);
        resultStatus = State.CRASHED;
        endOfRun();
        return;
    } catch (MalformedURLException e) {
        jqmlogger.warn("The JAR file path specified in Job Definition is incorrect "
                + job.getJd().getApplicationName(), e);
        resultStatus = State.CRASHED;
        endOfRun();
        return;
    } catch (RuntimeException e) {
        firstBlockDbFailureAnalysis(e);
        return;
    } finally {
        Helpers.closeQuietly(em);
    }

    // Class loader switch
    classLoaderToRestoreAtEnd = Thread.currentThread().getContextClassLoader();
    try {
        // Switch
        jqmlogger.trace("Setting class loader");
        Thread.currentThread().setContextClassLoader(jobClassLoader);
        jqmlogger.trace("Class Loader was set correctly");
    } catch (Exception e) {
        jqmlogger.error("Could not switch classloaders", e);
        this.resultStatus = State.CRASHED;
        endOfRun();
        return;
    }

    // Go! (launches the main function in the startup class designated in the manifest)
    try {
        jobClassLoader.launchJar(job, params);
        this.resultStatus = State.ENDED;
    } catch (JqmKillException e) {
        jqmlogger.info("Job instance  " + job.getId() + " has been killed.");
        this.resultStatus = State.KILLED;
    } catch (Exception e) {
        jqmlogger.info("Job instance " + job.getId() + " has crashed. Exception was:", e);
        this.resultStatus = State.CRASHED;
    }

    // Job instance has now ended its run
    try {
        endOfRun();
    } catch (Exception e) {
        jqmlogger.error("An error occurred while finalizing the job instance.", e);
    }

    jqmlogger.debug("End of loader for JobInstance " + this.job.getId() + ". Thread will now end");
}

---

From source file:entity.service.EntryFacadeREST.java

@POST
@Path("resultmod/{raceid}")
@Produces({ "application/json" })
public Response applyResultmod(@PathParam("raceid") Integer raceid, ResultData resultData) {
    EntryPK key = new EntryPK(raceid, resultData.getRacenum());
    Entry entry = em.find(Entry.class, key, LockModeType.PESSIMISTIC_WRITE);
    if (entry.getStatus().equals("FINISHED") && entry.getRacetime() != null) {
        entry.applyResultmods(resultData, parameters.getResultmods());
        em.merge(entry);/*from   w w w  .ja  v a 2s. c  om*/
    } else {
        JsonObject jsonMsg = JsonBuilder.getJsonMsg("Az eredmny nem a megfelel llapotban van!",
                JsonBuilder.MsgType.WARNING, null);
        return Response.status(500).entity(jsonMsg).build();
    }
    String msg = "Eredmny mdost ttel alkalmazva: " + entry.getContestant().getName() + " ("
            + entry.getKey().getRacenum() + ") - " + Utils.simpleTimeFormat.format(entry.getRacetime());
    JsonObject jsonMsg = JsonBuilder.getJsonMsg(msg, JsonBuilder.MsgType.INFO, null);
    NotificationEndpoint.send(msg);
    return Response.ok(jsonMsg).build();
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• »