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.ArrayList; import java.util.Collections; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Set; import org.apache.commons.lang3.Validate; import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate; import lombok.RequiredArgsConstructor; import ru.mystamps.web.dao.StampsCatalogDao; @RequiredArgsConstructor public class JdbcStampsCatalogDao implements StampsCatalogDao { private final NamedParameterJdbcTemplate jdbcTemplate; private final String addCatalogNumberSql; private final String addCatalogNumbersToSeriesSql; private final String findBySeriesIdSql; public List<String> add(Set<String> catalogNumbers) { Validate.validState(!"".equals(addCatalogNumberSql), "Query must be non empty"); List<String> inserted = new ArrayList<>(); for (String number : catalogNumbers) { int affected = jdbcTemplate.update(addCatalogNumberSql, Collections.singletonMap("code", number)); if (affected > 0) { inserted.add(number); } } return inserted; } public void addToSeries(Integer seriesId, Set<String> catalogNumbers) { Validate.validState(seriesId != null, "Series id must be non null"); Validate.validState(!catalogNumbers.isEmpty(), "Catalog numbers must be non empty"); Validate.validState(!"".equals(addCatalogNumbersToSeriesSql), "Query must be non empty"); Map<String, Object> params = new HashMap<>(); params.put("series_id", seriesId); params.put("numbers", catalogNumbers); jdbcTemplate.update(addCatalogNumbersToSeriesSql, params); } public List<String> findBySeriesId(Integer seriesId) { return jdbcTemplate.queryForList(findBySeriesIdSql, Collections.singletonMap("series_id", seriesId), String.class); } }