net.przemkovv.sphinx.dao.impl.DefaultPermissionDAO.java Source code

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Here is the source code for net.przemkovv.sphinx.dao.impl.DefaultPermissionDAO.java

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/*
 * The MIT License
 *
 * Copyright 2013 Przemyslaw Walkowiak <przemyslaw.walkowiak@put.poznan.pl>.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package net.przemkovv.sphinx.dao.impl;

import java.util.List;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Join;
import javax.persistence.criteria.Root;
import net.przemkovv.sphinx.dao.PermissionDAO;
import net.przemkovv.sphinx.model.Permission;
import net.przemkovv.sphinx.model.Permission_;
import net.przemkovv.sphinx.model.Role;
import net.przemkovv.sphinx.model.Role_;
import net.przemkovv.sphinx.model.User;
import net.przemkovv.sphinx.model.User_;
import org.springframework.stereotype.Repository;

@Repository("permissionDAO")
public class DefaultPermissionDAO extends DefaultGenericDAO<Permission> implements PermissionDAO {

    public DefaultPermissionDAO() {
        super(Permission.class);
    }

    @Override
    public List<Permission> getPermissionsForUser(User user) {

        CriteriaBuilder cb = em.getCriteriaBuilder();
        CriteriaQuery<Permission> cq = cb.createQuery(Permission.class);
        Root<Permission> permissions = cq.from(Permission.class);
        Join<Permission, Role> roles = permissions.join(Permission_.roles);
        Join<Role, User> users = roles.join(Role_.users);
        cq.where(cb.equal(users.get(User_.email), user.getEmail()));
        return em.createQuery(cq).getResultList();

    }

}