org.kuali.mobility.push.dao.PreferenceDaoImpl.java Source code

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Here is the source code for org.kuali.mobility.push.dao.PreferenceDaoImpl.java

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/**
 * The MIT License
 * Copyright (c) 2011 Kuali Mobility Team
 *
 * 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 org.kuali.mobility.push.dao;

import org.kuali.mobility.push.entity.Preference;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;

import javax.persistence.EntityManager;
import javax.persistence.NoResultException;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import java.util.List;

/**
 * Implementation of the Preference Data Access Object.
 * 
 * @author Kuali Mobility Team (mobility.dev@kuali.org)
 * @since 2.0.0
 */
@Repository("preferenceDao")
public class PreferenceDaoImpl implements PreferenceDao {

    /** A reference to a logger */
    private static final Logger LOG = LoggerFactory.getLogger(PreferenceDaoImpl.class);

    @PersistenceContext
    private EntityManager entityManager;

    /**
     * Creates new instance of the <code>PreferenceDaoImpl</code>.
     */
    public PreferenceDaoImpl() {
    }

    public List<Preference> findPreferencesByUsername(String username) {
        Query query = entityManager.createQuery("select p from Preference p where p.username = :username");
        query.setParameter("username", username);
        return query.getResultList();
    }

    public Preference findPreference(String username, String shortName) {
        Query query = getEntityManager().createNamedQuery("Preference.findPreferenceWithUsernameAndShortname");
        query.setParameter("username", username);
        query.setParameter("shortName", shortName);
        Preference result;
        try {
            result = (Preference) query.getSingleResult();
        } catch (Exception e) {
            LOG.info("No Preference Found: " + username + ", " + shortName);
            result = null;
        }
        return result;
    }

    @Override
    public Preference findPreference(String username, Long senderId) {
        try {
            Query query = getEntityManager().createNamedQuery("Preference.findPreferenceWithUsernameAndSenderId");
            query.setParameter("username", username);
            query.setParameter("pushSenderID", senderId);
            return (Preference) query.getSingleResult();
        } catch (NoResultException nre) {
            // If there is no result we return nothing
            return null;
        }
    }

    public Preference findPreference(Long id) {
        Query query = entityManager.createQuery("select p from Preference p where p.id = :id");
        query.setParameter("id", id);
        Preference result;
        try {
            result = (Preference) query.getSingleResult();
        } catch (Exception e) {
            LOG.info("Exception: " + e.getMessage());
            result = null;
        }
        return result;

    }

    @Transactional
    public Preference savePreference(Preference preference) {
        if (preference == null) {
            return null;
        }
        if (preference.getId() == null) {
            entityManager.persist(preference);
        } else {
            preference = entityManager.merge(preference);
        }
        return preference;
    }

    @Transactional
    @SuppressWarnings("unchecked")
    public boolean removePreference(Long id) {
        LOG.info("PreferenceDaoImpl.removePreference");
        Preference p = this.findPreference(id);
        boolean result = true;
        if (p != null) {
            LOG.info("PreferenceDaoImpl.removePreference ! null");
            try {
                entityManager.remove(p);
                LOG.info("PreferenceDaoImpl.removePreference : remove(p)");
            } catch (Exception e) {
                LOG.info("Exception Caught: " + e.getMessage());
                result = false;
            }
        } else {
            result = false;
        }
        LOG.info("PreferenceDaoImpl.removePreference " + (result ? "true" : "false"));
        return result;
    }

    @Override
    public List<String> findUsersThatAllowedSender(String senderKey) {

        // Get all the usernames of users that blocked senders, because we only save users that opted out
        Query query = getEntityManager().createNamedQuery("Preference.findUsersThatBlockedSenderKey");
        query.setParameter("senderKey", senderKey);
        List<String> blockedUsernames = (List<String>) query.getResultList();

        // Find all the users that has devices
        query = getEntityManager().createNamedQuery("Device.getDeviceUsernames");
        List<String> allowedUsers = (List<String>) query.getResultList();

        // Now remove all the users that blocked
        allowedUsers.removeAll(blockedUsernames);

        // Those that remained should receive the notifications
        return allowedUsers;
    }

    /** A reference to the <code>EntityManager</code> */
    /**
    * Returns the reference to the <code>EntityManager</code>
    * @return The reference to the <code>EntityManager</code>
    */
    public EntityManager getEntityManager() {
        return entityManager;
    }

    /**
     * Sets the reference to the <code>EntityManager</code>
     * @param entityManager The reference to the <code>EntityManager</code>
     */
    public void setEntityManager(EntityManager entityManager) {
        this.entityManager = entityManager;
    }
}