/*
* Copyright (c) 2009, 2010, 2011, 2012, B3log Team
*
* 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.b3log.solo.repository.impl;
import org.b3log.latke.Keys;
import org.b3log.latke.repository.AbstractRepository;
import org.b3log.latke.repository.FilterOperator;
import org.b3log.latke.repository.Query;
import org.b3log.solo.model.Article;
import org.b3log.latke.repository.RepositoryException;
import org.b3log.latke.repository.SortDirection;
import org.b3log.solo.model.ArchiveDate;
import org.b3log.solo.repository.ArchiveDateArticleRepository;
import org.json.JSONArray;
import org.json.JSONObject;
/**
* Archive date-Article relation repository.
*
* @author <a href="mailto:DL88250@gmail.com">Liang Ding</a>
* @version 1.0.0.6, Nov 9, 2011
* @since 0.3.1
*/
public final class ArchiveDateArticleRepositoryImpl extends AbstractRepository implements ArchiveDateArticleRepository {
/**
* Singleton.
*/
private static final ArchiveDateArticleRepositoryImpl SINGLETON =
new ArchiveDateArticleRepositoryImpl(ArchiveDate.ARCHIVE_DATE + "_" + Article.ARTICLE);
@Override
public JSONObject getByArchiveDateId(final String archiveDateId, final int currentPageNum, final int pageSize)
throws RepositoryException {
final Query query = new Query().addFilter(ArchiveDate.ARCHIVE_DATE + "_" + Keys.OBJECT_ID,
FilterOperator.EQUAL, archiveDateId).
addSort(Article.ARTICLE + "_" + Keys.OBJECT_ID,
SortDirection.DESCENDING).
setCurrentPageNum(currentPageNum).
setPageSize(pageSize).
setPageCount(1);
return get(query);
}
@Override
public JSONObject getByArticleId(final String articleId) throws RepositoryException {
final Query query = new Query();
query.addFilter(Article.ARTICLE + "_" + Keys.OBJECT_ID, FilterOperator.EQUAL, articleId);
final JSONObject result = get(query);
final JSONArray array = result.optJSONArray(Keys.RESULTS);
if (0 == array.length()) {
return null;
}
return array.optJSONObject(0);
}
/**
* Gets the {@link ArchiveDateArticleRepositoryImpl} singleton.
*
* @return the singleton
*/
public static ArchiveDateArticleRepositoryImpl getInstance() {
return SINGLETON;
}
/**
* Private constructor.
*
* @param name the specified name
*/
private ArchiveDateArticleRepositoryImpl(final String name) {
super(name);
}
}