001/****************************************************************
002 * Licensed to the Apache Software Foundation (ASF) under one   *
003 * or more contributor license agreements.  See the NOTICE file *
004 * distributed with this work for additional information        *
005 * regarding copyright ownership.  The ASF licenses this file   *
006 * to you under the Apache License, Version 2.0 (the            *
007 * "License"); you may not use this file except in compliance   *
008 * with the License.  You may obtain a copy of the License at   *
009 *                                                              *
010 *   http://www.apache.org/licenses/LICENSE-2.0                 *
011 *                                                              *
012 * Unless required by applicable law or agreed to in writing,   *
013 * software distributed under the License is distributed on an  *
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
015 * KIND, either express or implied.  See the License for the    *
016 * specific language governing permissions and limitations      *
017 * under the License.                                           *
018 ****************************************************************/
019package org.apache.james.mailbox.jpa.user;
020
021import java.util.List;
022
023import javax.persistence.EntityManagerFactory;
024import javax.persistence.NoResultException;
025import javax.persistence.PersistenceException;
026
027import org.apache.james.mailbox.exception.SubscriptionException;
028import org.apache.james.mailbox.jpa.JPATransactionalMapper;
029import org.apache.james.mailbox.store.user.SubscriptionMapper;
030import org.apache.james.mailbox.store.user.model.Subscription;
031
032/**
033 * JPA implementation of a {@link SubscriptionMapper}. This class is not thread-safe!
034 */
035public class JPASubscriptionMapper extends JPATransactionalMapper implements SubscriptionMapper {
036
037    public JPASubscriptionMapper(final EntityManagerFactory entityManagerFactory) {
038        super(entityManagerFactory);
039    }
040
041    
042    /**
043     * @see org.apache.james.mailbox.store.user.SubscriptionMapper#findMailboxSubscriptionForUser(java.lang.String, java.lang.String)
044     */
045    public Subscription findMailboxSubscriptionForUser(final String user, final String mailbox) throws SubscriptionException {
046        try {
047            return (Subscription) getEntityManager().createNamedQuery("findFindMailboxSubscriptionForUser")
048            .setParameter("userParam", user).setParameter("mailboxParam", mailbox).getSingleResult();
049        } catch (NoResultException e) {
050            return null;
051        } catch (PersistenceException e) {
052            throw new SubscriptionException(e);
053        }
054    }
055
056    /**
057     * @throws SubscriptionException 
058     * @see org.apache.james.mailbox.store.user.SubscriptionMapper#save(Subscription)
059     */
060    public void save(Subscription subscription) throws SubscriptionException {
061        try {
062            getEntityManager().persist(subscription);
063        } catch (PersistenceException e) {
064            throw new SubscriptionException(e);
065        }
066    }
067
068    /**
069     * @throws SubscriptionException 
070     * @see org.apache.james.mailbox.store.user.SubscriptionMapper#findSubscriptionsForUser(java.lang.String)
071     */
072    @SuppressWarnings("unchecked")
073    public List<Subscription> findSubscriptionsForUser(String user) throws SubscriptionException {
074        try {
075            return (List<Subscription>) getEntityManager().createNamedQuery("findSubscriptionsForUser").setParameter("userParam", user).getResultList();
076        } catch (PersistenceException e) {
077            throw new SubscriptionException(e);
078        }
079    }
080
081    /**
082     * @throws SubscriptionException 
083     * @see org.apache.james.mailbox.store.user.SubscriptionMapper#delete(Subscription)
084     */
085    public void delete(Subscription subscription) throws SubscriptionException {
086        try {
087            getEntityManager().remove(subscription);
088        } catch (PersistenceException e) {
089            throw new SubscriptionException(e);
090        }
091    }
092}