/*
* Copyright 2009 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.gtugs.repository;
import com.google.appengine.api.datastore.Key;
import com.google.appengine.api.datastore.KeyFactory;
import org.gtugs.domain.Chapter;
import org.springframework.orm.jdo.support.JdoDaoSupport;
import org.springframework.stereotype.Repository;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import javax.jdo.JDOObjectNotFoundException;
import javax.jdo.PersistenceManager;
import javax.jdo.Query;
/**
* @author jasonacooper@google.com (Jason Cooper)
*/
@Repository
public class JdoChapterDao extends JdoDaoSupport implements ChapterDao {
public JdoChapterDao() {
super();
setPersistenceManagerFactory(PMF.get());
}
public Integer getChapterCount() {
PersistenceManager pm = getPersistenceManager();
Query query = pm.newQuery(Chapter.class);
query.setResult("count(this)");
int count = 0;
try {
count = (Integer) query.execute();
} finally {
pm.close();
}
return count;
}
public Chapter getChapter(Long id) {
PersistenceManager pm = getPersistenceManager();
Chapter chapter = null;
try {
chapter = pm.getObjectById(Chapter.class, id);
// Lazily load administrator list
chapter.getAdministrators();
// Detach chapter
chapter = pm.detachCopy(chapter);
} catch (JDOObjectNotFoundException e) {
return null;
} finally {
pm.close();
}
return chapter;
}
@SuppressWarnings("unchecked")
public List<Chapter> getChapters() {
PersistenceManager pm = getPersistenceManager();
Query query = pm.newQuery(Chapter.class);
try {
List<Chapter> results = (List<Chapter>) query.execute();
if (results != null && results.size() > 0) {
return (List<Chapter>) pm.detachCopyAll(results);
}
} finally {
query.closeAll();
}
return null;
}
@SuppressWarnings("unchecked")
public List<Chapter> getActiveChapters() {
PersistenceManager pm = getPersistenceManager();
Query query = pm.newQuery(Chapter.class);
query.setFilter("status != 'inactive'");
try {
List<Chapter> results = (List<Chapter>) query.execute();
if (results != null && results.size() > 0) {
return (List<Chapter>) pm.detachCopyAll(results);
}
} finally {
query.closeAll();
}
return null;
}
public List<Chapter> getChapters(Set<Long> ids) {
List<Key> keys = new ArrayList<Key>(ids.size());
for (Long id : ids) {
keys.add(KeyFactory.createKey(Chapter.class.getSimpleName(), id));
}
PersistenceManager pm = getPersistenceManager();
Query query = pm.newQuery("select from " + Chapter.class.getName() +
" where key == :keys");
try {
List<Chapter> results = (List<Chapter>) query.execute(keys);
if (results != null && results.size() > 0) {
return (List<Chapter>) pm.detachCopyAll(results);
}
} finally {
query.closeAll();
pm.close();
}
return null;
}
@SuppressWarnings("unchecked")
public List<Chapter> getChaptersOrderedByCountry() {
PersistenceManager pm = getPersistenceManager();
Query query = pm.newQuery(Chapter.class);
query.setOrdering("country asc, name asc");
try {
List<Chapter> results = (List<Chapter>) query.execute();
if (results != null && results.size() > 0) {
return (List<Chapter>) pm.detachCopyAll(results);
}
} finally {
query.closeAll();
}
return null;
}
public void storeChapter(Chapter chapter) {
getJdoTemplate().makePersistent(chapter);
}
}