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

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Here is the source code for org.kuali.mobility.push.dao.PushMessageDaoImpl.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.apache.log4j.Logger;
import org.kuali.mobility.push.entity.PushMessage;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;

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

/**
 * Implementation of the <code>PushMessageDao</code>
 * 
 * @since 2.4.0
 * @author Kuali Mobility Team (mobility.dev@kuali.org)
 */
@Repository("pushMessageDao")
public class PushMessageDaoImpl implements PushMessageDao {

    /** A reference to a logger for this service */
    private static final Logger LOG = Logger.getLogger(PushMessageDaoImpl.class);

    /** A reference to the <code>EntityManger</code> */
    @PersistenceContext
    private EntityManager entityManager;

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

    /* (non-Javadoc)
     * @see org.kuali.mobility.push.dao.PushMessageDao#findAllPushMessagesByLanguage(java.lang.String)
     */
    @SuppressWarnings("unchecked")
    public List<PushMessage> findAllPushMessagesByLanguage(String language) {
        Query query = entityManager.createNamedQuery("PushMessage.findByLanguage");
        query.setParameter("language", language);
        return query.getResultList();
    }

    /* (non-Javadoc)
     * @see org.kuali.mobility.push.dao.PushMessageDao#findPushMessageById(java.lang.Long)
     */
    @Override
    public PushMessage findPushMessageById(Long id) {
        Query query = entityManager.createNamedQuery("PushMessage.findById");
        query.setParameter("id", id);
        PushMessage result;
        try {
            result = (PushMessage) query.getSingleResult();
        } catch (Exception e) {
            result = null;
        }
        return result;
    }

    /* (non-Javadoc)
     * @see org.kuali.mobility.push.dao.PushMessageDao#savePushMessage(org.kuali.mobility.push.entity.PushMessage)
     */
    @Transactional
    public void savePushMessage(PushMessage pushMessage) {
        if (pushMessage == null) {
            return;
        }
        if (pushMessage.getMessageId() == null) {
            entityManager.persist(pushMessage);
            LOG.info("Persist PushMessage");
        } else {
            entityManager.merge(pushMessage);
            LOG.info("Merge PushMessage");
        }
        LOG.info(pushMessage);
    }

    /* (non-Javadoc)
     * @see org.kuali.mobility.push.dao.PushMessageDao#removePushMessage(org.kuali.mobility.push.entity.PushMessage)
     */
    @Transactional
    public boolean removePushMessage(PushMessage pushMessage) {
        boolean result = true;
        if (pushMessage == null) {
            result = false;
        } else if (pushMessage.getMessageId() == null) {
            result = false;
        } else {
            try {
                getEntityManager().remove(getEntityManager().contains(pushMessage) ? pushMessage
                        : getEntityManager().merge(pushMessage));
            } catch (Exception e) {
                LOG.info("Exception while trying to remove push notification.", e);
                result = false;
            }
        }
        return result;
    }

    /**
     * @return the entityManager
     */
    public EntityManager getEntityManager() {
        return entityManager;
    }

    /**
     * @param entityManager the entityManager to set
     */
    public void setEntityManager(EntityManager entityManager) {
        this.entityManager = entityManager;
    }

}