Example usage for javax.persistence EntityManager contains

Introduction

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

Prototype

public boolean contains(Object entity);

Source Link

Document

Check if the instance is a managed entity instance belonging to the current persistence context.

Usage

From source file:org.apache.roller.planet.business.jpa.JPAPersistenceStrategy.java

/**
 * Store object using an existing transaction.
 * @param obj the object to persist// w  w  w  . j  a  v a2 s .  c  om
 * @return the object persisted
 * @throws org.apache.roller.planet.PlanetException on any error
 */
public Object store(Object obj) throws PlanetException {
    EntityManager em = getEntityManager(true);
    if (!em.contains(obj)) {
        // If entity is not managed we can assume it is new
        em.persist(obj);
    }
    return obj;
}

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From source file:org.apereo.portal.persondir.dao.jpa.JpaLocalAccountDaoImpl.java

@Override
@PortalTransactional//from   www.  ja v a2s  .c o  m
public void deleteAccount(ILocalAccountPerson account) {
    Validate.notNull(account, "definition can not be null");

    final EntityManager entityManager = this.getEntityManager();

    final ILocalAccountPerson persistentAccount;
    if (entityManager.contains(account)) {
        persistentAccount = account;
    } else {
        persistentAccount = entityManager.merge(account);
    }

    entityManager.remove(persistentAccount);
}

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From source file:org.apereo.portal.portlet.dao.jpa.JpaMarketplaceRatingDao.java

/**
 * @param marketplaceRatingPK the primary key of the entity you want
 * @return an attached entity if found, null otherwise
 *///from   w  w  w.  j a  v  a2  s.com
@PortalTransactionalReadOnly
@OpenEntityManager(unitName = PERSISTENCE_UNIT_NAME)
public IMarketplaceRating getRating(MarketplaceRatingPK marketplaceRatingPK) {
    final MarketplaceRatingPK tempRatingPK = marketplaceRatingPK;
    MarketplaceRatingImpl temp = new MarketplaceRatingImpl();
    temp.setMarketplaceRatingPK(marketplaceRatingPK);
    final EntityManager entityManager = this.getEntityManager();
    if (entityManager.contains(temp)) {
        temp = entityManager.merge(temp);
        return temp;
    } else {
        final TypedQuery<MarketplaceRatingImpl> query = this.createQuery(
                this.createCriteriaQuery(new Function<CriteriaBuilder, CriteriaQuery<MarketplaceRatingImpl>>() {
                    @Override
                    public CriteriaQuery<MarketplaceRatingImpl> apply(CriteriaBuilder input) {
                        final CriteriaQuery<MarketplaceRatingImpl> criteriaQuery = input
                                .createQuery(MarketplaceRatingImpl.class);
                        final Root<MarketplaceRatingImpl> definitionRoot = criteriaQuery
                                .from(MarketplaceRatingImpl.class);
                        Predicate conditionUser = input.equal(
                                definitionRoot.get("marketplaceRatingPK").get("userName"),
                                tempRatingPK.getUserName());
                        Predicate conditionPortlet = input.equal(
                                definitionRoot.get("marketplaceRatingPK").get("portletDefinition"),
                                tempRatingPK.getPortletDefinition());
                        Predicate allConditions = input.and(conditionPortlet, conditionUser);
                        criteriaQuery.where(allConditions);
                        return criteriaQuery;
                    }
                }));
        List<MarketplaceRatingImpl> results = query.getResultList();
        if (!results.isEmpty()) {
            return results.get(0);
        } else {
            return null;
        }
    }
}

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From source file:fr.univrouen.poste.domain.User.java

@Transactional
public void remove() {
    EntityManager entityManager = entityManager();
    User user = this;
    if (!entityManager.contains(this)) {
        user = User.findUser(this.getId());
    }/*from   w ww .  j a  v  a  2s . c o m*/

    // candidat
    List<GalaxieEntry> galaxieEntries = GalaxieEntry.findGalaxieEntrysByCandidat(user).getResultList();
    for (GalaxieEntry galaxieEntry : galaxieEntries) {
        galaxieEntry.remove();
    }
    List<PosteCandidature> candidatures = PosteCandidature.findPosteCandidaturesByCandidat(user)
            .getResultList();
    for (PosteCandidature candidature : candidatures) {
        candidature.remove();
    }

    // membre
    List<CommissionEntry> commissionEntries = CommissionEntry.findCommissionEntrysByMembre(user)
            .getResultList();
    for (CommissionEntry commissionEntry : commissionEntries) {
        commissionEntry.getPoste().getMembres().remove(user);
        commissionEntry.remove();
    }
    Set<PosteAPourvoir> postes = user.getPostes();
    if (postes != null) {
        for (PosteAPourvoir poste : postes) {
            poste.getMembres().remove(user);
        }
    }

    entityManager.remove(user);
}

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From source file:org.springframework.batch.item.database.JpaItemWriter.java

/**
 * Do perform the actual write operation. This can be overridden in a
 * subclass if necessary.//from   w w w . ja v  a  2 s. co m
 *
 * @param entityManager the EntityManager to use for the operation
 * @param items the list of items to use for the write
 */
protected void doWrite(EntityManager entityManager, List<? extends T> items) {

    if (logger.isDebugEnabled()) {
        logger.debug("Writing to JPA with " + items.size() + " items.");
    }

    if (!items.isEmpty()) {
        long mergeCount = 0;
        for (T item : items) {
            if (!entityManager.contains(item)) {
                entityManager.merge(item);
                mergeCount++;
            }
        }
        if (logger.isDebugEnabled()) {
            logger.debug(mergeCount + " entities merged.");
            logger.debug((items.size() - mergeCount) + " entities found in persistence context.");
        }
    }

}

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From source file:org.synyx.hades.dao.orm.GenericJpaDao.java

public void delete(final T entity) {

    EntityManager em = getEntityManager();
    em.remove(em.contains(entity) ? entity : em.merge(entity));
}

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From source file:de.iai.ilcd.model.dao.AbstractDao.java

/**
 * Default remove: bring back to persistence context if required and delete
 * /* w  ww  .  ja  v  a2  s.c om*/
 * @param obj
 *            object to remove
 * @return remove object
 * @throws Exception
 *             on errors (transaction is being rolled back)
 */
public T remove(T obj) throws Exception {
    if (obj == null) {
        return null;
    }
    EntityManager em = PersistenceUtil.getEntityManager();
    EntityTransaction t = em.getTransaction();

    try {
        t.begin();
        T tmp = em.contains(obj) ? obj : em.merge(obj);
        em.remove(tmp);
        t.commit();
        return tmp;
    } catch (Exception e) {
        t.rollback();
        throw e;
    }
}

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From source file:org.apereo.portal.portlet.dao.jpa.JpaMarketplaceRatingDao.java

/**
 * This method will either create a new rating or update an
 * existing rating/*from ww w  .j  av a2s .c  o m*/
 * 
 * @param  Must not be null
 * @return the attached entity
 * 
 */
@Override
@PortalTransactional
public IMarketplaceRating createOrUpdateRating(IMarketplaceRating marketplaceRatingImplementation) {
    Validate.notNull(marketplaceRatingImplementation, "MarketplaceRatingImpl must not be null");
    final EntityManager entityManager = this.getEntityManager();
    IMarketplaceRating temp = this.getRating(marketplaceRatingImplementation.getMarketplaceRatingPK());
    if (!entityManager.contains(marketplaceRatingImplementation) && temp != null) {
        //Entity is not managed and there is a rating for this portlet/user - update needed
        temp = entityManager.merge(marketplaceRatingImplementation);
    } else {
        //Entity is either already managed or doesn't exist - create needed
        temp = marketplaceRatingImplementation;
    }
    entityManager.persist(temp);
    return temp;
}

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From source file:cz.fi.muni.pa165.daoImpl.TroopDAOImpl.java

@Override
public void removeTroop(Troop troop) throws IllegalArgumentException {
    if (troop == null) {
        throw new IllegalArgumentException("Troop can't be null.");
    }/*ww  w  .j  a v  a  2 s .  c o  m*/
    if (troop.getId() == null) {
        throw new IllegalArgumentException("Troop is not present in DB.");
    }
    EntityManager em = emf.createEntityManager();
    em.getTransaction().begin();
    Troop present = em.find(Troop.class, troop.getId());
    em.getTransaction().commit();

    if (present == null) {
        throw new IllegalArgumentException("Troop is not present in DB.");
    } else {
        em.getTransaction().begin();
        em.remove(em.contains(troop) ? troop : em.merge(troop));
        em.getTransaction().commit();
    }
    em.close();
}

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From source file:de.iai.ilcd.model.dao.AbstractDao.java

/**
 * Default remove: bring back to persistence context if required and delete
 * /*  ww  w .  jav a2  s.c om*/
 * @param objs
 *            objects to remove
 * @return removed objects
 * @throws Exception
 *             on errors (transaction is being rolled back)
 */
public Collection<T> remove(Collection<T> objs) throws Exception {
    if (objs == null || objs.isEmpty()) {
        return null;
    }
    Collection<T> res = new ArrayList<T>();
    EntityManager em = PersistenceUtil.getEntityManager();
    EntityTransaction t = em.getTransaction();

    try {
        t.begin();
        for (T obj : objs) {
            T tmp = em.contains(obj) ? obj : em.merge(obj);
            em.remove(tmp);
            res.add(tmp);
        }
        t.commit();
        return res;
    } catch (Exception e) {
        t.rollback();
        throw e;
    }
}

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