Java tutorial
/* * Copyright 1998-2012 Linux.org.ru * 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 ru.org.linux.topic; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.jdbc.core.JdbcTemplate; import org.springframework.jdbc.core.RowMapper; import org.springframework.stereotype.Repository; import ru.org.linux.section.SectionService; import javax.sql.DataSource; import java.io.Serializable; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Timestamp; import java.util.List; @Repository public class TopTenDao { @Autowired private SectionService sectionService; private JdbcTemplate jdbcTemplate; @Autowired public void setDataSource(DataSource dataSource) { jdbcTemplate = new JdbcTemplate(dataSource); } public List<TopTenMessageDTO> getMessages() { String sql = "select topics.id as msgid, groups.urlname, groups.section, topics.title, lastmod, topics.stat1 as c " + "from topics " + "join groups on groups.id = topics.groupid" + " where topics.postdate>(CURRENT_TIMESTAMP-'1 month 1 day'::interval) and not deleted and notop is null " + " and groupid!=8404 and groupid!=4068 order by c desc, msgid limit 10"; return jdbcTemplate.query(sql, new RowMapper<TopTenMessageDTO>() { @Override public TopTenMessageDTO mapRow(ResultSet rs, int i) throws SQLException { TopTenMessageDTO result = new TopTenMessageDTO(); result.setUrl(sectionService.getSection(rs.getInt("section")).getSectionLink() + rs.getString("urlname") + '/' + rs.getInt("msgid")); result.setTitle(rs.getString("title")); result.setLastmod(rs.getTimestamp("lastmod")); result.setAnswers(rs.getInt("c")); return result; } }); } public static class TopTenMessageDTO implements Serializable { private String url; private Timestamp lastmod; private String title; private Integer pages; private Integer answers; private static final long serialVersionUID = 166352344159392938L; public String getUrl() { return url; } public void setUrl(String url) { this.url = url; } public Timestamp getLastmod() { return lastmod; } public void setLastmod(Timestamp lastmod) { this.lastmod = lastmod; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public Integer getPages() { return pages; } public void setPages(Integer pages) { this.pages = pages; } public Integer getAnswers() { return answers; } public void setAnswers(Integer answers) { this.answers = answers; } } }