Java tutorial
/* * Symphony - A modern community (forum/SNS/blog) platform written in Java. * Copyright (C) 2012-2016, b3log.org & hacpai.com * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.b3log.symphony.service; import javax.inject.Inject; import org.apache.commons.lang.time.DateFormatUtils; import org.b3log.latke.Keys; import org.b3log.latke.logging.Level; import org.b3log.latke.logging.Logger; import org.b3log.latke.repository.RepositoryException; import org.b3log.latke.repository.annotation.Transactional; import org.b3log.latke.service.annotation.Service; import org.b3log.latke.util.Stopwatchs; import org.b3log.symphony.model.Liveness; import org.b3log.symphony.repository.LivenessRepository; import org.json.JSONObject; /** * Liveness management service. * * @author <a href="http://88250.b3log.org">Liang Ding</a> * @version 1.0.0.0, Mar 22, 2016 * @since 1.4.0 */ @Service public class LivenessMgmtService { /** * Logger. */ private static final Logger LOGGER = Logger.getLogger(LivenessMgmtService.class.getName()); /** * Liveness repository. */ @Inject private LivenessRepository livenessRepository; /** * Increments a field of the specified liveness. * * @param userId the specified user id * @param field the specified field */ @Transactional public void incLiveness(final String userId, final String field) { Stopwatchs.start("Inc liveness"); final String date = DateFormatUtils.format(System.currentTimeMillis(), "yyyyMMdd"); try { JSONObject liveness = livenessRepository.getByUserAndDate(userId, date); if (null == liveness) { liveness = new JSONObject(); liveness.put(Liveness.LIVENESS_USER_ID, userId); liveness.put(Liveness.LIVENESS_DATE, date); liveness.put(Liveness.LIVENESS_POINT, 0); liveness.put(Liveness.LIVENESS_ACTIVITY, 0); liveness.put(Liveness.LIVENESS_ARTICLE, 0); liveness.put(Liveness.LIVENESS_COMMENT, 0); liveness.put(Liveness.LIVENESS_PV, 0); liveness.put(Liveness.LIVENESS_REWARD, 0); liveness.put(Liveness.LIVENESS_THANK, 0); liveness.put(Liveness.LIVENESS_VOTE, 0); liveness.put(Liveness.LIVENESS_VOTE, 0); livenessRepository.add(liveness); } liveness.put(field, liveness.optInt(field) + 1); livenessRepository.update(liveness.optString(Keys.OBJECT_ID), liveness); } catch (final RepositoryException e) { LOGGER.log(Level.ERROR, "Updates a liveness [" + date + "] field [" + field + "] failed", e); } finally { Stopwatchs.end(); } } }