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

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Here is the source code for com.nec.harvest.service.impl.UserServiceImpl.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 java.util.List;

import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.lang.StringUtils;
import org.hibernate.Criteria;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.criterion.Criterion;
import org.hibernate.criterion.Restrictions;
import org.hibernate.exception.JDBCConnectionException;

import com.nec.core.exception.ObjectNotFoundException;
import com.nec.core.exception.TooManyObjectsException;
import com.nec.crud.hibernate.HibernateSessionManager;
import com.nec.harvest.constant.Constants;
import com.nec.harvest.exception.ConnectionException;
import com.nec.harvest.exception.ServiceException;
import com.nec.harvest.model.User;
import com.nec.harvest.repository.UserRepository;
import com.nec.harvest.service.UserService;

/**
 * {@link UserService}
 * 
 * @author sondn
 *
 */
public class UserServiceImpl implements UserService {

    private UserRepository repository;

    public UserServiceImpl(UserRepository userRepository) {
        this.repository = userRepository;
    }

    /** {@inheritDoc} */
    @Override
    public User findByUsrCode(String strCode) throws ServiceException {
        if (StringUtils.isEmpty(strCode)) {
            throw new IllegalArgumentException("User's code must not be null or empty");
        }

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

        User user = null;
        try {
            tx = session.beginTransaction();
            Criterion criterion = Restrictions.and(Restrictions.eq("usrCode", strCode),
                    Restrictions.eq("delKbn", Constants.STATUS_ACTIVE));
            Criteria criteria = repository.getCriteria(session, User.class);
            criteria.add(criterion);
            List<User> users = repository.findByCriteria(criteria);
            // Release transaction
            tx.commit();
            if (CollectionUtils.isEmpty(users)) {
                throw new ObjectNotFoundException("Could not find any user matches with code " + strCode);
            }

            if (users.size() > 1) {
                throw new TooManyObjectsException("Found too many users are matched with code " + strCode);
            }

            user = users.get(0);
        } catch (JDBCConnectionException ex) {
            if (tx != null) {
                tx.rollback();
            }
            throw new ConnectionException(ex.getMessage(), ex);
        } catch (org.hibernate.ObjectNotFoundException ex) {
            if (tx != null) {
                tx.rollback();
            }
            throw ex;
        } catch (HibernateException ex) {
            if (tx != null) {
                tx.rollback();
            }
            throw new ServiceException("An exception occured while finding a logged in user for name " + strCode,
                    ex);
        } finally {
            HibernateSessionManager.closeSession(session);
        }
        return user;
    }

}