com.nec.harvest.service.impl.MessageServiceImpl.java Source code

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Here is the source code for com.nec.harvest.service.impl.MessageServiceImpl.java

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/**
 * Copyright(C) 2014
 * NEC Corporation All rights reserved.
 * 
 * No permission to use, copy, modify and distribute this software
 * and its documentation for any purpose is granted.
 * This software is provided under applicable license agreement only.
 */
package com.nec.harvest.service.impl;

import org.apache.commons.lang.StringUtils;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.exception.JDBCConnectionException;

import com.nec.core.exception.ObjectNotFoundException;
import com.nec.crud.hibernate.HibernateSessionManager;
import com.nec.harvest.exception.ConnectionException;
import com.nec.harvest.exception.ServiceException;
import com.nec.harvest.model.Message;
import com.nec.harvest.repository.MessageRepository;
import com.nec.harvest.service.MessageService;

/**
 * {@link MessageService}
 * 
 * @author sondn
 *
 */
public class MessageServiceImpl implements MessageService {

    private MessageRepository repository;

    public MessageServiceImpl(MessageRepository messageRepository) {
        this.repository = messageRepository;
    }

    /** {@inheritDoc} */
    @Override
    public Message findByMsgCode(String msgCode) throws ServiceException {
        if (StringUtils.isEmpty(msgCode)) {
            throw new IllegalArgumentException("Message's Id must not be null or empty");
        }

        final Session session = HibernateSessionManager.getSession();
        Transaction tx = null;

        Message message = null;
        try {
            tx = session.beginTransaction();
            message = repository.get(session, msgCode);
            // Release transaction
            tx.commit();
            if (message == null) {
                throw new ObjectNotFoundException("Could not found any message matches with Id " + msgCode);
            }
        } catch (JDBCConnectionException ex) {
            if (tx != null) {
                tx.rollback();
            }
            throw new ConnectionException(
                    "Database access problem. Killing off all remaining connections in the connection pool.", ex);
        } catch (HibernateException ex) {
            if (tx != null) {
                tx.rollback();
            }
            throw new ServiceException("Could not find any message matches with code " + msgCode, ex);
        } finally {
            HibernateSessionManager.closeSession(session);
        }
        return message;
    }

}