/**
* Copyright (c) 2005-2011, Rory Ye
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of the Jdkcn.com nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jdkcn.myblog.service.impl;
import java.util.Date;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.Query;
import org.apache.commons.lang.StringUtils;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.persist.Transactional;
import com.jdkcn.myblog.condition.EntryCondition;
import com.jdkcn.myblog.domain.Entry;
import com.jdkcn.myblog.domain.Entry.CommentStatus;
import com.jdkcn.myblog.domain.Entry.PingStatus;
import com.jdkcn.myblog.domain.Entry.Status;
import com.jdkcn.myblog.exception.DuplicateException;
import com.jdkcn.myblog.hibernate.Condition;
import com.jdkcn.myblog.service.EntryService;
import com.jdkcn.myblog.util.PaginationSupport;
import com.jdkcn.myblog.util.Range;
import com.jdkcn.myblog.util.Sorter;
/**
* @author <a href="mailto:rory.cn@gmail.com">Rory</a>
* @version $Id: EntryServiceImpl.java 427 2011-05-13 09:28:19Z rory.cn $
*/
public class EntryServiceImpl implements EntryService {
@Inject
private Provider<EntityManager> entityManagerProvider;
/**
* {@inheritDoc}
*/
@Transactional
public Entry saveOrUpdate(Entry entry) {
if (StringUtils.isNotBlank(entry.getName())) {
Entry exist = getByName(entry.getBlog().getId(), entry.getName());
if (exist != null && !StringUtils.equals(exist.getId(), entry.getId())) {
throw new DuplicateException("entry in blogId[" + entry.getBlog().getId() + "] duplicate with name:" + entry.getName());
}
}
if (entry.getStatus() == null) {
entry.setStatus(Status.DRAFT);
}
if (entry.getPingStatus() == null) {
entry.setPingStatus(PingStatus.OPEN);
}
if (entry.getCommentStatus() == null) {
entry.setCommentStatus(CommentStatus.OPEN);
}
if (entry.getCreateDate() == null) {
entry.setCreateDate(new Date());
}
if (entry.getUpdateDate() == null) {
entry.setUpdateDate(new Date());
}
if (entry.getPublishDate() == null) {
entry.setPublishDate(new Date());
}
DateTimeZone zoneUTC = DateTimeZone.UTC;
DateTime dateTime = new DateTime(entry.getPublishDate());
entry.setPublishDateGMT(dateTime.withZone(zoneUTC).toDate());
dateTime = new DateTime(entry.getUpdateDate());
entry.setUpdateDateGMT(dateTime.withZone(zoneUTC).toDate());
dateTime = new DateTime(entry.getCreateDate());
entry.setCreateDateGMT(dateTime.withZone(zoneUTC).toDate());
return entityManagerProvider.get().merge(entry);
}
/**
* {@inheritDoc}
*/
public Entry get(String id) {
return entityManagerProvider.get().find(Entry.class, id);
}
/**
* {@inheritDoc}
*/
@SuppressWarnings("unchecked")
public Entry getByName(String blogId, String name) {
Query query = entityManagerProvider.get().createQuery("from Entry entry where entry.blog.id = :blogId and entry.name = :name");
query.setParameter("blogId", blogId);
query.setParameter("name", name);
List<Entry> entries = query.getResultList();
if (entries.isEmpty()) {
return null;
}
return entries.get(0);
}
/**
* {@inheritDoc}
*/
public PaginationSupport<Entry> search(Condition condition, Range range, Sorter sorter) {
if (condition == null) {
condition = new EntryCondition();
}
String hql = condition.decorateHql();
Query countQuery = entityManagerProvider.get().createQuery("select count(*) " + hql);
condition.setParameters(countQuery);
Query query = entityManagerProvider.get().createQuery(sorter.decorate(hql));
condition.setParameters(query);
long totalCount = (Long)countQuery.getSingleResult();
query.setFirstResult(range.getStart());
query.setMaxResults(range.getSize());
@SuppressWarnings("unchecked")
List<Entry> entries = query.getResultList();
return new PaginationSupport<Entry>(entries, Integer.parseInt(String.valueOf(totalCount)), range.getStart(), range.getSize());
}
}