Example usage for javax.persistence EntityManager clear

List of usage examples for javax.persistence EntityManager clear

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Introduction

In this page you can find the example usage for javax.persistence EntityManager clear.

Prototype

public void clear();

Source Link

Document

Clear the persistence context, causing all managed entities to become detached.

Usage

From source file:org.droolsjbpm.services.test.ci.SessionMGMTandCIBaseTest.java

protected void completeOperation(UserTransaction ut, EntityManager entityManager) {
    if (ut != null) {
        try {// w w  w .  j a  v a 2  s  .com
            ut.commit();
            if (entityManager != null) {
                entityManager.clear();
                entityManager.close();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

From source file:ejb.bean.UsuarioDAOJPAImplBean.java

/**Mtodo para a busca de todos os usurios existentes no banco de dados.
 * @author Richel Sensineli/*from w  ww . j av a 2  s. co  m*/
 * @param nome String - Nome do usurio
 * @return Collection list
 */
@Override
public Collection buscaTodosUsuarios() {
    EntityManagerFactory emf = Persistence.createEntityManagerFactory("UsuarioPU");
    EntityManager em = emf.createEntityManager();
    Query q = em.createQuery("select u from UsuarioImpl u");
    Collection result = null;
    result = q.getResultList();
    em.clear();
    em.close();
    emf.close();
    return result;
}

From source file:org.nuxeo.ecm.core.persistence.PersistenceProvider.java

protected void releaseEntityManager(EntityManager em) {
    if (!em.isOpen()) {
        return;//from  w w  w . ja va 2 s.co  m
    }
    try {
        doCommit(em);
    } finally {
        if (em.isOpen()) {
            em.clear();
            em.close();
        }
    }
}

From source file:org.nuxeo.ecm.core.persistence.PersistenceProvider.java

public void releaseEntityManagerWithRollback(EntityManager em) {
    if (!em.isOpen()) {
        return;//www. j  a  v a 2 s . co  m
    }
    try {
        doRollback(em);
    } finally {
        if (em.isOpen()) {
            em.clear();
            em.close();
        }
    }
}

From source file:org.grails.datastore.mapping.jpa.JpaSession.java

public void clear() {
    jpaTemplate.execute(new JpaCallback<Void>() {
        public Void doInJpa(EntityManager em) throws PersistenceException {
            em.clear();
            return null;
        }//from w w  w.ja va 2 s . co m
    });
}

From source file:org.apache.ranger.audit.destination.DBAuditDestination.java

private void clearEntityManager() {
    try {//from w  w  w.  j  av a  2s.  c  o  m
        EntityManager em = getEntityManager();

        if (em != null) {
            em.clear();
        }
    } catch (Exception excp) {
        logger.warn("DBAuditDestination.clearEntityManager(): failed", excp);
    }
}

From source file:ejb.bean.UsuarioDAOJPAImplBean.java

/**Mtodo para realizar a busca de usurio pelo ID.
 * @author Richel Sensineli//from   ww  w.  ja va 2  s . com
 * @param id int - ID do usurio
 * @return Usuario usuario - Objeto Usuario
 */
@Override
public Usuario buscaUsuarioPorId(final int id) throws UsuarioNaoEncontradoException {
    EntityManagerFactory emf = Persistence.createEntityManagerFactory("UsuarioPU");
    EntityManager em = emf.createEntityManager();
    Usuario u = em.find(UsuarioImpl.class, id);
    if (u == null) {
        throw new UsuarioNaoEncontradoException("usuario no encontrado");
    }
    em.clear();
    em.close();
    emf.close();
    return u;
}

From source file:org.apache.ranger.audit.provider.DbAuditProvider.java

private void clearEntityManager() {
    try {/* w  w w.ja v a  2  s . co m*/
        EntityManager em = getEntityManager();

        if (em != null) {
            em.clear();
        }
    } catch (Exception excp) {
        LOG.warn("DbAuditProvider.clearEntityManager(): failed", excp);
    }
}

From source file:net.sf.ehcache.openjpa.datacache.TestEhCache.java

@Test
public void testPersist() {
    EntityManagerFactory emf = em.getEntityManagerFactory();

    EntityManager em = emf.createEntityManager();
    PObject pc = new PObject("XYZ");
    em.getTransaction().begin();/*ww w . ja  v  a2s  . c  om*/
    em.persist(pc);
    em.getTransaction().commit();
    Object oid = pc.getId();

    em.clear();
    // After clean the instance must not be in L1 cache
    assertFalse(em.contains(pc));
    // But it must be found in L2 cache by its OpenJPA identifier
    assertTrue(getCache(pc.getClass()).contains(getOpenJPAId(pc, oid)));

    PObject pc2 = em.find(PObject.class, oid);
    // After find(), the original instance is not in the L1 cache
    assertFalse(em.contains(pc));
    // After find(), the found instance is in the L1 cache
    assertTrue(em.contains(pc2));
    // The L2 cache must still hold the key   
    assertTrue(getCache(pc.getClass()).contains(getOpenJPAId(pc, oid)));
}

From source file:controllers.modules.SetCoverBuilder.java

@BodyParser.Of(play.mvc.BodyParser.Json.class)
public static Result update(final UUID corpus, UUID setcover) {
    DocumentCorpus corpusObj = null;/*  www .java  2  s .  c o  m*/
    if (corpus != null) {
        corpusObj = fetchResource(corpus, DocumentCorpus.class);
    }

    // make sure we have the right combination.
    DocumentSetCover setCoverObj = null;
    if (setcover != null) {
        setCoverObj = fetchResource(setcover, DocumentSetCover.class);
        if (corpusObj == null) {
            corpusObj = setCoverObj.getBaseCorpus();
        } else if (ObjectUtils.notEqual(corpusObj, setCoverObj.getBaseCorpus())) {
            throw new IllegalArgumentException();
        }
    } else if (corpusObj == null) {
        throw new IllegalArgumentException();
    }

    JsonNode jsonBody = request().body().asJson();
    if (jsonBody == null && setcover != null) {
        throw new IllegalArgumentException();
    }
    if (jsonBody == null) {
        jsonBody = JsonNodeFactory.instance.objectNode();
    }

    DocumentSetCoverModel setCoverVM = null;
    setCoverVM = Json.fromJson(jsonBody, DocumentSetCoverModel.class);
    final SetCoverFactory factory = (SetCoverFactory) setCoverVM.toFactory().setOwnerId(getUsername());

    // set the default title.
    if (setcover == null && StringUtils.isEmpty(factory.getTitle())) {
        factory.setTitle("Optimized " + corpusObj.getTitle());
    }

    SetCoverFactory tmpFactory = (SetCoverFactory) new SetCoverFactory().setStore(corpusObj)
            .setTitle(factory.getTitle()).setDescription(factory.getDescription())
            .setOwnerId(factory.getOwnerId());

    // make basic creation/updation first.
    if (setcover == null) {
        setCoverObj = tmpFactory.create();
        em().persist(setCoverObj);
        setCoverVM = (DocumentSetCoverModel) createViewModel(setCoverObj);

        // if this is a simple change, just return from here.
        if (ObjectUtils.equals(
                ObjectUtils.defaultIfNull(factory.getTokenizingOptions(), new TokenizingOptions()),
                new TokenizingOptions())
                && factory.getWeightCoverage() == SetCoverFactory.DEFAULT_WEIGHT_COVERAGE) {
            return created(setCoverVM.asJson());
        }
        setcover = setCoverObj.getIdentifier();
    } else if (!StringUtils.equals(StringUtils.defaultString(tmpFactory.getTitle(), setCoverObj.getTitle()),
            setCoverObj.getTitle())
            || !StringUtils.equals(
                    StringUtils.defaultString(tmpFactory.getDescription(), setCoverObj.getDescription()),
                    setCoverObj.getDescription())) {

        tmpFactory.setEm(em()).setExistingId(setcover);
        setCoverObj = tmpFactory.create();
        em().merge(setCoverObj);
        setCoverVM = (DocumentSetCoverModel) createViewModel(setCoverObj);
        setCoverVM.populateSize(em(), setCoverObj);

        // if this is a simple change, just return from here.
        if (ObjectUtils.equals(
                ObjectUtils.defaultIfNull(factory.getTokenizingOptions(), new TokenizingOptions()),
                ObjectUtils.defaultIfNull(setCoverObj.getTokenizingOptions(), new TokenizingOptions()))
                && ObjectUtils.equals(factory.getWeightCoverage(), ObjectUtils.defaultIfNull(
                        setCoverObj.getWeightCoverage(), SetCoverFactory.DEFAULT_WEIGHT_COVERAGE))) {
            return ok(setCoverVM.asJson());
        }
    }

    // get rid of any old progress observer tokens and create a new one.
    finalizeProgress(setCoverObj.getId());
    createProgressObserverToken(setCoverObj.getId());
    watchProgress(factory, "create", setCoverObj.getId());

    final Context ctx = Context.current();
    final UUID setCoverId = setcover;

    Akka.future(new Callable<DocumentSetCover>() {
        @Override
        public DocumentSetCover call() throws Exception {
            try {
                return execute(new SareTxRunnable<DocumentSetCover>() {
                    @Override
                    public DocumentSetCover run(EntityManager em) throws Throwable {
                        bindEntityManager(em);
                        Context.current.set(ctx);

                        DocumentSetCover setCoverObj = null;
                        UUID corpusId = corpus;
                        if (corpusId == null) {
                            setCoverObj = fetchResource(setCoverId, DocumentSetCover.class);
                            corpusId = setCoverObj.getBaseCorpus().getIdentifier();
                        }

                        factory.setStore(fetchResource(corpusId, DocumentCorpus.class))
                                .setExistingId(setCoverId).setEm(em);

                        List<SetCoverDocument> oldDocuments = Lists.newArrayList(setCoverObj.getAllDocuments());
                        setCoverObj = factory.create();

                        em.flush();
                        em.merge(setCoverObj);
                        em.getTransaction().commit();
                        em.clear();

                        em.getTransaction().begin();
                        for (SetCoverDocument oldDocument : oldDocuments) {
                            if (Iterables.find(setCoverObj.getAllDocuments(), Predicates.equalTo(oldDocument),
                                    null) == null) {
                                SetCoverDocument tmpDocument = em.find(SetCoverDocument.class,
                                        oldDocument.getId());
                                em.remove(tmpDocument);
                            }
                        }

                        return setCoverObj;
                    }
                }, ctx);
            } catch (Throwable e) {
                Logger.error(LoggedAction.getLogEntry(ctx, "failed to build set cover"), e);
                throw new IllegalArgumentException(e);
            } finally {
                setProgressFinished(UuidUtils.toBytes(setCoverId));
            }
        }
    });

    return ok(setCoverVM.asJson());
}