UserPermissionDAOImpl.java example

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activityinfo-master
package org.activityinfo.server.database.hibernate.dao;

/*
 * #%L
 * ActivityInfo Server
 * %%
 * Copyright (C) 2009 - 2013 UNICEF
 * %%
 * 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/gpl-3.0.html>.
 * #L%
 */

import com.google.inject.Inject;
import org.activityinfo.server.database.hibernate.entity.UserPermission;

import javax.persistence.EntityManager;
import java.util.List;

public class UserPermissionDAOImpl extends GenericDAO<UserPermission, Integer> implements UserPermissionDAO {

    @Inject
    public UserPermissionDAOImpl(EntityManager em) {
        super(em);
    }

    @Override @SuppressWarnings("unchecked")
    public UserPermission findUserPermissionByUserIdAndDatabaseId(int userId, int databaseId) {
        List<UserPermission> result = getEntityManager().createNamedQuery("findUserPermissionByUserIdAndDatabaseId")
                                                        .setParameter("databaseId", databaseId)
                                                        .setParameter("userId", userId)
                                                        .getResultList();
        return (result != null && !result.isEmpty()) ? result.get(0) : null;
    }
}