Example usage for org.hibernate LockMode READ

Introduction

In this page you can find the example usage for org.hibernate LockMode READ.

Prototype

LockMode READ

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Document

A shared lock.

Usage

From source file:org.projectforge.user.GroupDao.java

License:Open Source License

/**
 * Assigns groups to and unassigns groups from given user.
 * @param user/* w  w w  .  ja  va2  s .  c o m*/
 * @param groupsToAssign Groups to assign (nullable).
 * @param groupsToUnassign Groups to unassign (nullable).
 * @throws AccessException
 */
@Transactional(readOnly = false, propagation = Propagation.REQUIRES_NEW, isolation = Isolation.REPEATABLE_READ)
public void assignGroups(final PFUserDO user, final Set<GroupDO> groupsToAssign,
        final Set<GroupDO> groupsToUnassign) throws AccessException {
    getHibernateTemplate().refresh(user, LockMode.READ);
    final List<GroupDO> assignedGroups = new ArrayList<GroupDO>();
    if (groupsToAssign != null) {
        for (final GroupDO group : groupsToAssign) {
            final GroupDO dbGroup = getHibernateTemplate().get(clazz, group.getId(),
                    LockMode.PESSIMISTIC_WRITE);
            Set<PFUserDO> assignedUsers = dbGroup.getAssignedUsers();
            if (assignedUsers == null) {
                assignedUsers = new HashSet<PFUserDO>();
                dbGroup.setAssignedUsers(assignedUsers);
            }
            if (assignedUsers.contains(user) == false) {
                log.info("Assigning user '" + user.getUsername() + "' to group '" + dbGroup.getName() + "'.");
                assignedUsers.add(user);
                assignedGroups.add(dbGroup);
                dbGroup.setLastUpdate(); // Needed, otherwise GroupDO is not detected for hibernate history!
            } else {
                log.info("User '" + user.getUsername() + "' already assigned to group '" + dbGroup.getName()
                        + "'.");
            }
        }
    }
    final List<GroupDO> unassignedGroups = new ArrayList<GroupDO>();
    if (groupsToUnassign != null) {
        for (final GroupDO group : groupsToUnassign) {
            final GroupDO dbGroup = getHibernateTemplate().get(clazz, group.getId(),
                    LockMode.PESSIMISTIC_WRITE);
            final Set<PFUserDO> assignedUsers = dbGroup.getAssignedUsers();
            if (assignedUsers != null && assignedUsers.contains(user) == true) {
                log.info("Unassigning user '" + user.getUsername() + "' from group '" + dbGroup.getName()
                        + "'.");
                assignedUsers.remove(user);
                unassignedGroups.add(dbGroup);
                dbGroup.setLastUpdate(); // Needed, otherwise GroupDO is not detected for hibernate history!
            } else {
                log.info("User '" + user.getUsername() + "' is not assigned to group '" + dbGroup.getName()
                        + "' (can't unassign).");
            }
        }
    }
    getSession().flush();
    createHistoryEntry(user, unassignedGroups, assignedGroups);
    userGroupCache.setExpired();
}

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From source file:org.seasar.hibernate3.dao.impl.LoadCommand.java

License:Apache License

public void setLockMode(String lockMode) {
    final String NONE = "NONE";
    final String READ = "READ";
    final String UPGRADE = "UPGRADE";

    if (lockMode.equals(NONE)) {
        lockMode_ = LockMode.NONE;/*from  w w w  .  ja  va  2s . co  m*/

    } else if (lockMode.equals(READ)) {
        lockMode_ = LockMode.READ;

    } else if (lockMode.equals(UPGRADE)) {
        lockMode_ = LockMode.UPGRADE;

    } else {
        lockMode_ = null;
    }
}

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From source file:org.wso2.mercury.persistence.hibernate.HibernatePersistenceManager.java

License:Apache License

public RMSSequenceDto getRMSSquenceWithID(long id) throws PersistenceException {
    Session session = null;//from  w  w  w  . ja v a2s  .c  om
    try {
        session = sessionFactory.getCurrentSession();
        session.beginTransaction();
        RMSSequenceDto rmsSequenceDto = (RMSSequenceDto) session.load(RMSSequenceDto.class, id, LockMode.READ);
        session.getTransaction().commit();
        return rmsSequenceDto;

    } catch (HibernateException e) {
        if (session.getTransaction().isActive()) {
            session.getTransaction().rollback();
        }
        log.error("Can not load the RMSSeqence objects with id ==> " + id, e);
        throw new PersistenceException("Can not load the RMSSeqence objects with id ==> " + id, e);
    }
}

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From source file:org.wso2.mercury.persistence.hibernate.HibernatePersistenceManager.java

License:Apache License

public Axis2InfoDto getAxis2InfoID(long id) throws PersistenceException {
    Session session = null;/*from w  w  w .  j  av  a 2s  . c o m*/
    try {
        session = sessionFactory.getCurrentSession();
        session.beginTransaction();
        Axis2InfoDto axis2InfoDto = (Axis2InfoDto) session.load(Axis2InfoDto.class, id, LockMode.READ);
        session.getTransaction().commit();
        return axis2InfoDto;

    } catch (HibernateException e) {
        if (session.getTransaction().isActive()) {
            session.getTransaction().rollback();
        }
        log.error("Can not load the axis2InfoDto objects with id ==> " + id, e);
        throw new PersistenceException("Can not load the axis2InfoDto objects with id ==> " + id, e);
    }
}

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From source file:org.wso2.mercury.persistence.hibernate.HibernatePersistenceManager.java

License:Apache License

public InternalKeyDto getInternalKeyWithID(long id) throws PersistenceException {
    Session session = null;/*from   ww  w  . j ava  2  s. c  om*/
    try {
        session = sessionFactory.getCurrentSession();
        session.beginTransaction();
        InternalKeyDto internalKeyDto = (InternalKeyDto) session.load(InternalKeyDto.class, id, LockMode.READ);
        session.getTransaction().commit();
        return internalKeyDto;

    } catch (HibernateException e) {
        if (session.getTransaction().isActive()) {
            session.getTransaction().rollback();
        }
        log.error("Can not load the InternalKey object with internal key id ==> " + id, e);
        throw new PersistenceException("Can not load the Internalkey object with internal key id==> " + id, e);
    }
}

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From source file:sncode.java.hibernate.dao.GenericDao.java

License:MIT License

/**
 * Find mapped data object by primary key
 * @param id_       Serializable with mapped object od field
 * @param objName_  String with mapped object name
 * @param session_  Hibernate session object
 * @return          Mapped object with query result
 * @throws DaoException /*from   w ww  . j av a  2s .co m*/
 */
public Object findByPK(Serializable id_, String objName_, Session session_) throws DaoException {
    Transaction tx = null;
    Object result = null;
    boolean globaltx = true;

    try {
        if (session_ == null) {
            session_ = this.startSession();
        }
        if (session_.getTransaction() == null || !session_.getTransaction().isActive()) {
            tx = session_.beginTransaction();
            globaltx = false;
        }

        result = session_.load(objName_, id_, LockMode.READ); // load has been deprecated

        if (!globaltx) {
            tx.commit();
        }
    } catch (Exception e) {
        logger.error("Error retriving by PK: " + stacktraceError(e));
        throw new DaoException("Error retriving by PK: " + stacktraceError(e));
    } finally {
        if (!globaltx) {
            if (session_ != null && session_.isOpen()) {
                if (tx != null && tx.isActive()) {
                    session_.flush();
                }
                session_.close();
                session_ = null;
            }
        }
    }

    return result;
}

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