/*
* 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.processor.util;
import freemarker.template.TemplateMethodModel;
import freemarker.template.TemplateModelException;
import org.b3log.latke.Keys;
import org.b3log.latke.logging.Logger;
import org.b3log.latke.service.ServiceException;
import org.b3log.latke.service.annotation.Service;
import org.b3log.solo.model.Tag;
import org.b3log.solo.service.ArticleQueryService;
import org.b3log.solo.service.TagQueryService;
import org.json.JSONException;
import org.json.JSONObject;
import javax.inject.Inject;
import java.util.ArrayList;
import java.util.List;
/**
* Fill tag articles.
*
* @author <a href="mailto:385321165@qq.com">DASHU</a>
* @version 0.0.0.1, Jul 1, 2013
* @since 0.6.1
*/
@Service
public class FillTagArticles implements TemplateMethodModel {
/**
* Logger.
*/
private static final Logger LOGGER = Logger.getLogger(FillTagArticles.class.getName());
/**
* Tag query service.
*/
@Inject
private TagQueryService tagQueryService;
/**
* Article query service.
*/
@Inject
private ArticleQueryService articleQueryService;
/**
* Arg size.
*/
private static final int ARG_SIZE = 3;
@Override
public Object exec(final List arguments) throws TemplateModelException {
if (arguments.size() != ARG_SIZE) {
LOGGER.debug("FillTagArticles with wrong arguments!");
throw new TemplateModelException("Wrong arguments!");
}
final String tagTitle = (String) arguments.get(0);
final int currentPageNum = Integer.parseInt((String) arguments.get(1));
final int pageSize = Integer.parseInt((String) arguments.get(2));
try {
final JSONObject result = tagQueryService.getTagByTitle(tagTitle);
if (null == result) {
return new ArrayList<JSONObject>();
}
final JSONObject tag = result.getJSONObject(Tag.TAG);
final String tagId = tag.getString(Keys.OBJECT_ID);
final List<JSONObject> list = articleQueryService.getArticlesByTag(tagId, currentPageNum, pageSize);
return list;
} catch (final ServiceException e) {
e.printStackTrace();
} catch (final JSONException e) {
e.printStackTrace();
}
return null;
}
}