ru.mystamps.web.dao.impl.JdbcCollectionDao.java Source code

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Here is the source code for ru.mystamps.web.dao.impl.JdbcCollectionDao.java

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/*
 * 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.slf4j.Logger;
import org.slf4j.LoggerFactory;

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.CollectionDao;
import ru.mystamps.web.dao.dto.AddCollectionDbDto;
import ru.mystamps.web.dao.dto.CollectionInfoDto;
import ru.mystamps.web.dao.dto.LinkEntityDto;

@RequiredArgsConstructor
@SuppressWarnings("PMD.AvoidDuplicateLiterals")
public class JdbcCollectionDao implements CollectionDao {
    private static final Logger LOG = LoggerFactory.getLogger(JdbcCollectionDao.class);

    private final NamedParameterJdbcTemplate jdbcTemplate;

    @Value("${collection.find_last_created}")
    private String findLastCreatedCollectionsSql;

    @Value("${collection.count_collections_of_users}")
    private String countCollectionsOfUsersSql;

    @Value("${collection.count_updated_since}")
    private String countUpdatedSinceSql;

    @Value("${collection.create}")
    private String addCollectionSql;

    @Value("${collection.mark_as_modified}")
    private String markAsModifiedSql;

    @Value("${collection.is_series_in_collection}")
    private String isSeriesInUserCollectionSql;

    @Value("${collection.add_series_to_collection}")
    private String addSeriesToCollectionSql;

    @Value("${collection.remove_series_from_collection}")
    private String removeSeriesFromCollectionSql;

    @Value("${collection.find_info_by_slug}")
    private String findCollectionInfoBySlugSql;

    @Override
    public List<LinkEntityDto> findLastCreated(int quantity) {
        return jdbcTemplate.query(findLastCreatedCollectionsSql, Collections.singletonMap("quantity", quantity),
                RowMappers::forLinkEntityDto);
    }

    @Override
    public long countCollectionsOfUsers() {
        return jdbcTemplate.queryForObject(countCollectionsOfUsersSql, Collections.<String, Object>emptyMap(),
                Long.class);
    }

    @Override
    public long countUpdatedSince(Date date) {
        return jdbcTemplate.queryForObject(countUpdatedSinceSql, Collections.singletonMap("date", date),
                Long.class);
    }

    @Override
    public Integer add(AddCollectionDbDto collection) {
        Map<String, Object> params = new HashMap<>();
        params.put("user_id", collection.getOwnerId());
        params.put("slug", collection.getSlug());
        params.put("updated_at", collection.getUpdatedAt());
        params.put("updated_by", collection.getOwnerId());

        KeyHolder holder = new GeneratedKeyHolder();

        int affected = jdbcTemplate.update(addCollectionSql, new MapSqlParameterSource(params), holder);

        Validate.validState(affected == 1,
                "Unexpected number of affected rows after creation of collection of user #%d: %d",
                params.get("user_id"), affected);

        return Integer.valueOf(holder.getKey().intValue());
    }

    /**
     * @author John Shkarin
     * @author Slava Semushin
     */
    @Override
    public void markAsModified(Integer userId, Date updatedAt) {
        Map<String, Object> params = new HashMap<>();
        params.put("user_id", userId);
        params.put("updated_at", updatedAt);
        params.put("updated_by", userId);

        int affected = jdbcTemplate.update(markAsModifiedSql, params);

        Validate.validState(affected == 1, "Unexpected number of affected rows after updating collection: %d",
                affected);
    }

    @Override
    public boolean isSeriesInUserCollection(Integer userId, Integer seriesId) {
        Map<String, Object> params = new HashMap<>();
        params.put("user_id", userId);
        params.put("series_id", seriesId);

        Long result = jdbcTemplate.queryForObject(isSeriesInUserCollectionSql, params, Long.class);
        Validate.validState(result != null, "Query returned null instead of long");

        return result > 0;
    }

    @Override
    public void addSeriesToUserCollection(Integer userId, Integer seriesId) {
        Map<String, Object> params = new HashMap<>();
        params.put("user_id", userId);
        params.put("series_id", seriesId);

        int affected = jdbcTemplate.update(addSeriesToCollectionSql, params);

        // CheckStyle: ignore LineLength for next 3 lines
        Validate.validState(affected == 1,
                "Unexpected number of affected rows after adding series #%d to collection of user #%d: %d",
                seriesId, userId, affected);
    }

    @SuppressWarnings("PMD.AvoidLiteralsInIfCondition")
    @Override
    public void removeSeriesFromUserCollection(Integer userId, Integer seriesId) {
        Map<String, Object> params = new HashMap<>();
        params.put("user_id", userId);
        params.put("series_id", seriesId);

        int affected = jdbcTemplate.update(removeSeriesFromCollectionSql, params);
        if (affected != 1) {
            // CheckStyle: ignore LineLength for next 2 lines
            LOG.warn(
                    "Unexpected number of affected rows after removing series #{} from collection of user #{}: %{}",
                    seriesId, userId, affected);
        }
    }

    @Override
    public CollectionInfoDto findCollectionInfoBySlug(String slug) {
        try {
            return jdbcTemplate.queryForObject(findCollectionInfoBySlugSql, Collections.singletonMap("slug", slug),
                    RowMappers::forCollectionInfoDto);
        } catch (EmptyResultDataAccessException ignored) {
            return null;
        }
    }

}