/*
* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 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 java.util.ArrayList;
import java.util.List;
import javax.inject.Inject;
import org.b3log.solo.model.Tag;
import org.b3log.solo.repository.TagRepository;
import org.b3log.latke.Keys;
import org.b3log.latke.repository.AbstractRepository;
import org.b3log.latke.repository.FilterOperator;
import org.b3log.latke.repository.PropertyFilter;
import org.b3log.latke.repository.Query;
import org.b3log.latke.repository.RepositoryException;
import org.b3log.latke.repository.SortDirection;
import org.b3log.latke.repository.annotation.Repository;
import org.b3log.latke.util.CollectionUtils;
import org.b3log.solo.repository.TagArticleRepository;
import org.json.JSONArray;
import org.json.JSONObject;
/**
* Tag repository.
*
* @author <a href="http://88250.b3log.org">Liang Ding</a>
* @version 1.0.1.1, Nov 29, 2011
* @since 0.3.1
*/
@Repository
public class TagRepositoryImpl extends AbstractRepository implements TagRepository {
/**
* Public constructor.
*/
public TagRepositoryImpl() {
super(Tag.TAG);
}
/**
* Tag-Article relation repository.
*/
@Inject
private TagArticleRepository tagArticleRepository;
@Override
public JSONObject getByTitle(final String tagTitle) throws RepositoryException {
final Query query = new Query().setFilter(new PropertyFilter(Tag.TAG_TITLE, FilterOperator.EQUAL, tagTitle)).setPageCount(1);
final JSONObject result = get(query);
final JSONArray array = result.optJSONArray(Keys.RESULTS);
if (0 == array.length()) {
return null;
}
return array.optJSONObject(0);
}
@Override
public List<JSONObject> getMostUsedTags(final int num) throws RepositoryException {
final Query query = new Query().addSort(Tag.TAG_PUBLISHED_REFERENCE_COUNT, SortDirection.DESCENDING).setCurrentPageNum(1).setPageSize(num).setPageCount(
1);
final JSONObject result = get(query);
final JSONArray array = result.optJSONArray(Keys.RESULTS);
return CollectionUtils.jsonArrayToList(array);
}
@Override
public List<JSONObject> getByArticleId(final String articleId) throws RepositoryException {
final List<JSONObject> ret = new ArrayList<JSONObject>();
final List<JSONObject> tagArticleRelations = tagArticleRepository.getByArticleId(articleId);
for (final JSONObject tagArticleRelation : tagArticleRelations) {
final String tagId = tagArticleRelation.optString(Tag.TAG + "_" + Keys.OBJECT_ID);
final JSONObject tag = get(tagId);
ret.add(tag);
}
return ret;
}
/**
* Sets tag article repository with the specified tag article repository.
*
* @param tagArticleRepository the specified tag article repository
*/
public void setTagArticleRepository(final TagArticleRepository tagArticleRepository) {
this.tagArticleRepository = tagArticleRepository;
}
}