Java tutorial
/* * Copyright (C) 2009-2017 Slava Semushin <slava.semushin@gmail.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 2 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ package ru.mystamps.web.dao.impl; import java.util.Collections; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; import org.apache.commons.lang3.Validate; import org.springframework.beans.factory.annotation.Value; import org.springframework.dao.EmptyResultDataAccessException; import org.springframework.jdbc.core.namedparam.MapSqlParameterSource; import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate; import org.springframework.jdbc.support.GeneratedKeyHolder; import org.springframework.jdbc.support.KeyHolder; import lombok.RequiredArgsConstructor; import ru.mystamps.web.dao.CountryDao; import ru.mystamps.web.dao.dto.AddCountryDbDto; import ru.mystamps.web.dao.dto.LinkEntityDto; @RequiredArgsConstructor @SuppressWarnings("PMD.AvoidDuplicateLiterals") public class JdbcCountryDao implements CountryDao { private final NamedParameterJdbcTemplate jdbcTemplate; @Value("${country.create}") private String addCountrySql; @Value("${country.count_all_countries}") private String countAllSql; @Value("${country.count_countries_by_slug}") private String countBySlugSql; @Value("${country.count_countries_by_name}") private String countByNameSql; @Value("${country.count_countries_by_name_ru}") private String countByNameRuSql; @Value("${country.count_countries_of_collection}") private String countCountriesOfCollectionSql; @Value("${country.count_countries_added_since}") private String countCountriesAddedSinceSql; @Value("${country.count_untranslated_names_since}") private String countUntranslatedNamesSinceSql; @Value("${country.count_stamps_by_countries}") private String countStampsByCountriesSql; @Value("${country.find_all_countries_names_with_slug}") private String findCountriesNamesWithSlugSql; @Value("${country.find_country_link_info_by_slug}") private String findCountryLinkEntityBySlugSql; @Override public Integer add(AddCountryDbDto country) { Map<String, Object> params = new HashMap<>(); params.put("name", country.getName()); params.put("name_ru", country.getNameRu()); params.put("slug", country.getSlug()); params.put("created_at", country.getCreatedAt()); params.put("created_by", country.getCreatedBy()); params.put("updated_at", country.getUpdatedAt()); params.put("updated_by", country.getUpdatedBy()); KeyHolder holder = new GeneratedKeyHolder(); int affected = jdbcTemplate.update(addCountrySql, new MapSqlParameterSource(params), holder); Validate.validState(affected == 1, "Unexpected number of affected rows after creation of country: %d", affected); return Integer.valueOf(holder.getKey().intValue()); } @Override public long countAll() { return jdbcTemplate.queryForObject(countAllSql, Collections.<String, Object>emptyMap(), Long.class); } @Override public long countBySlug(String slug) { return jdbcTemplate.queryForObject(countBySlugSql, Collections.singletonMap("slug", slug), Long.class); } @Override public long countByName(String name) { return jdbcTemplate.queryForObject(countByNameSql, Collections.singletonMap("name", name), Long.class); } @Override public long countByNameRu(String name) { return jdbcTemplate.queryForObject(countByNameRuSql, Collections.singletonMap("name", name), Long.class); } @Override public long countCountriesOfCollection(Integer collectionId) { return jdbcTemplate.queryForObject(countCountriesOfCollectionSql, Collections.singletonMap("collection_id", collectionId), Long.class); } @Override public long countAddedSince(Date date) { return jdbcTemplate.queryForObject(countCountriesAddedSinceSql, Collections.singletonMap("date", date), Long.class); } @Override public long countUntranslatedNamesSince(Date date) { return jdbcTemplate.queryForObject(countUntranslatedNamesSinceSql, Collections.singletonMap("date", date), Long.class); } @Override public List<Object[]> getStatisticsOf(Integer collectionId, String lang) { Map<String, Object> params = new HashMap<>(); params.put("collection_id", collectionId); params.put("lang", lang); return jdbcTemplate.query(countStampsByCountriesSql, params, RowMappers::forNameAndCounter); } @Override public List<LinkEntityDto> findAllAsLinkEntities(String lang) { return jdbcTemplate.query(findCountriesNamesWithSlugSql, Collections.singletonMap("lang", lang), RowMappers::forLinkEntityDto); } @Override public LinkEntityDto findOneAsLinkEntity(String slug, String lang) { Map<String, Object> params = new HashMap<>(); params.put("slug", slug); params.put("lang", lang); try { return jdbcTemplate.queryForObject(findCountryLinkEntityBySlugSql, params, RowMappers::forLinkEntityDto); } catch (EmptyResultDataAccessException ignored) { return null; } } }