org.sloth.persistence.impl.UserDaoImpl.java Source code

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Here is the source code for org.sloth.persistence.impl.UserDaoImpl.java

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/*
 * Copyright (C) 2009-2010  Stefan Arndt, Christian Autermann, Dustin Demuth,
 *                  Christoph Fendrich, Simon Ottenhues, Christian Paluschek
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.sloth.persistence.impl;

import java.util.Collection;

import javax.persistence.NoResultException;
import javax.persistence.NonUniqueResultException;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Root;

import org.sloth.exception.EntityAlreadyKnownException;
import org.sloth.exception.EntityNotKnownException;
import org.sloth.model.User;
import org.sloth.model.User_;
import org.sloth.persistence.ObservationDao;
import org.sloth.persistence.UserDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

/**
 * Implementation of a {@link UserDao}
 * 
 * @author Christian Autermann
 * @author Stefan Arndt
 * @author Dustin Demuth
 * @author Christoph Fendrich
 * @author Simon Ottenhues
 * @author Christian Paluschek
 */
@Repository
public class UserDaoImpl extends EntityManagerDao<User> implements UserDao {

    private ObservationDao observationDao;

    @Override
    public void delete(Collection<User> t) throws NullPointerException, IllegalArgumentException {
        for (User u : t) {
            if (!isAttached(u)) {
                throw new EntityNotKnownException();
            }
            observationDao.delete(observationDao.getByUser(u));
            logger.info("Deleting User with Id: {}", u.getId());
            getEntityManager().remove(u);
        }
        getEntityManager().flush();
    }

    @Override
    public void delete(User u) {
        if (!isAttached(u)) {
            throw new EntityNotKnownException();
        }
        observationDao.delete(observationDao.getByUser(u));
        logger.info("Deleting User with Id: {}", u.getId());
        getEntityManager().remove(u);
        getEntityManager().flush();
    }

    @Override
    public Collection<User> getAll() {
        CriteriaQuery<User> cq = getEntityManager().getCriteriaBuilder().createQuery(User.class);
        cq.select(cq.from(User.class));
        Collection<User> list = getEntityManager().createQuery(cq).getResultList();
        logger.info("Getting all Users; Found: {}", list.size());
        return list;
    }

    @Override
    public User getById(Long id) {
        if (id == null) {
            throw new NullPointerException();
        }
        logger.info("Searching for Observation with Id: {}", id);
        User u = getEntityManager().find(User.class, id);
        if (u != null) {
            logger.info("Found User with Id {}", u.getId());
        } else {
            logger.info("Can't find User with Id {}", id);
        }
        return u;
    }

    @Override
    public User getByMail(String mail) {
        if (mail == null) {
            throw new NullPointerException();
        }
        CriteriaBuilder cb = getEntityManager().getCriteriaBuilder();
        CriteriaQuery<User> cq = cb.createQuery(User.class);
        Root<User> user = cq.from(User.class);
        cq.select(user).where(cb.equal(user.get(User_.mail), mail));
        User result = null;
        try {
            result = getEntityManager().createQuery(cq).getSingleResult();
        } catch (NoResultException e) {
            logger.info("User with address {} not found", mail);
        } catch (NonUniqueResultException e) {
            logger.warn("Corrupt Database", e);
        }
        return result;
    }

    @Override
    public void save(User u) {
        if (u == null) {
            throw new NullPointerException();
        }
        if (isAttached(u)) {
            throw new EntityAlreadyKnownException();
        }
        logger.info("Registrating User: ID: {}, Mail: {}, Name: {}, FamilyName: {}, Password: {}, Group: {}",
                new Object[] { u.getId(), u.getMail(), u.getName(), u.getFamilyName(), u.getUserGroup() });
        getEntityManager().persist(u);
        getEntityManager().flush();
        logger.info("Persisting User; Generated Id is: {}", u.getId());
    }

    /**
     * @param observationDao
     *            the observationDao to set
     */
    @Autowired
    public void setObservationDao(ObservationDao observationDao) {
        logger.info("getting the observation dao");
        this.observationDao = observationDao;
    }

    @Override
    public void update(User u) {
        if (!isAttached(u)) {
            throw new EntityNotKnownException();
        }
        logger.info("Updating {}", u);
        getEntityManager().merge(u);
        getEntityManager().flush();
    }
}