package eu.dnetlib.usagestats.repositories;

import org.apache.log4j.Logger;
import org.springframework.data.redis.core.HashOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Repository;

import com.fasterxml.jackson.databind.ObjectMapper;
import eu.dnetlib.usagestats.portal.CountryRepositories;
import eu.dnetlib.usagestats.portal.CountryUsageStats;
import eu.dnetlib.usagestats.portal.CountryUsageStatsAll;

import eu.dnetlib.usagestats.portal.MonthlyStats;
import eu.dnetlib.usagestats.portal.MonthlyUsageStats;
import eu.dnetlib.usagestats.portal.RepositoryStats;
import eu.dnetlib.usagestats.portal.TotalStats;
import eu.dnetlib.usagestats.portal.TotalStatsReposViewsDownloads;
import eu.dnetlib.usagestats.portal.UsageStats;
import eu.dnetlib.usagestats.portal.YearlyStats;
import eu.dnetlib.usagestats.sushilite.domain.ItemIdentifier;
import eu.dnetlib.usagestats.sushilite.domain.ItemPerformance;
import eu.dnetlib.usagestats.sushilite.domain.ReportItem;

import org.apache.commons.dbutils.DbUtils;

import javax.sql.DataSource;

import java.security.MessageDigest;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import org.springframework.beans.factory.annotation.Value;

@Repository
public class UsageStatsRepository {

    private final DataSource usageStatsDB;

    private final HashOperations<String, String, String> jedis;

    private final Logger log = Logger.getLogger(this.getClass());
    @Value("${prod.statsdb}")
    private String statsDB;
    @Value("${prod.usagestatsImpalaDB}")
    private String usagestatsImpalaDB;

    public UsageStatsRepository(DataSource usageStatsDB, RedisTemplate<String, String> redisTemplate) {
        this.usageStatsDB = usageStatsDB;
        this.jedis = redisTemplate.opsForHash();
    }

    private static String MD5(String string) throws java.security.NoSuchAlgorithmException {
        MessageDigest md = MessageDigest.getInstance("MD5");
        md.update(string.getBytes());

        byte byteData[] = md.digest();
        StringBuilder sb = new StringBuilder();
        for (byte aByteData : byteData) {
            sb.append(Integer.toString((aByteData & 0xff) + 0x100, 16).substring(1));
        }

        return sb.toString();
    }

    private static String toJson(Object o) throws com.fasterxml.jackson.core.JsonProcessingException {
        ObjectMapper objectMapper = new ObjectMapper();
        return objectMapper.writeValueAsString(o);
    }

    private static UsageStats fromJson(String string) throws java.io.IOException {
        ObjectMapper objectMapper = new ObjectMapper();
        return objectMapper.readValue(string, UsageStats.class);
    }

    /*
    private static List<ReportItem> reportItemsFromJson(String string) throws Exception {
        ObjectMapper objectMapper = new ObjectMapper();
        return objectMapper.readValue(string, objectMapper.getTypeFactory().constructCollectionType(List.class, ReportItem.class));
    }
     */
    public List<MonthlyUsageStats> executeMontlyUsageStats(String query) {
        List<MonthlyUsageStats> montlhyList = new ArrayList<MonthlyUsageStats>();

        Connection connection = null;
        PreparedStatement st = null;
        ResultSet rs = null;
        try {
            connection = usageStatsDB.getConnection();
            log.info(connection.toString());
            st = connection.prepareStatement(query);
            log.info(st.toString());
            rs = st.executeQuery();
            while (rs.next()) {
                MonthlyUsageStats monthlyUsageStats = new MonthlyUsageStats();
                monthlyUsageStats.addDate(rs.getString(1));
                monthlyUsageStats.addDownloads(rs.getString(2));
                monthlyUsageStats.addViews(rs.getString(3));
                montlhyList.add(monthlyUsageStats);
            }

        } catch (Exception e) {
            System.out.println(e);
        }

        try {
            jedis.put("test", "result", toJson(montlhyList));
            jedis.put("test", "persistent", "false");
            jedis.put("test", "fetchMode", "3");
        } catch (Exception e) {
            System.out.println(e);
        }finally {
            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(st);
            DbUtils.closeQuietly(connection);
        }

        return montlhyList;
    }

    public TotalStatsReposViewsDownloads executeTotalStatsReposViewsDownloads(String query) {
        TotalStatsReposViewsDownloads totalStatsReposViewsDownlads = new TotalStatsReposViewsDownloads();

        String total_repos = " ";
        String views = " ";
        String downloads = " ";
        String redis_key = "";
        Connection connection = null;
        PreparedStatement st = null;
        ResultSet rs = null;
        try {
            connection = usageStatsDB.getConnection();
            log.info(connection.toString());
            st = connection.prepareStatement(query);
            log.info(st.toString());
            rs = st.executeQuery();
            redis_key = MD5(st.toString());
            while (rs.next()) {
                totalStatsReposViewsDownlads.addRepositories(rs.getString(1));
                totalStatsReposViewsDownlads.addViews(rs.getString(2));
                totalStatsReposViewsDownlads.addDownloads(rs.getString(3));
            }

        } catch (Exception e) {
            System.out.println(e);
        }

        try {
            jedis.put(redis_key, "result", toJson(totalStatsReposViewsDownlads));
            jedis.put(redis_key, "persistent", "false");
            jedis.put(redis_key, "fetchMode", "3");
        } catch (Exception e) {
            System.out.println(e);
        }finally {
            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(st);
            DbUtils.closeQuietly(connection);
        }

        return totalStatsReposViewsDownlads;
    }

    public CountryUsageStatsAll executeCountryUsageStats(String query) {
        CountryUsageStatsAll countryListAll = new CountryUsageStatsAll();

        List<CountryUsageStats> countryList = new ArrayList<CountryUsageStats>();

        String date = " ";
        String total_repos = " ";
        String views = " ";
        String downloads = " ";
        String redis_key = "redis_key";
        Connection connection = null;
        PreparedStatement st = null;
        ResultSet rs = null;
        int total_views = 0;
        int total_downloads = 0;

        try {
            connection = usageStatsDB.getConnection();
            log.info(connection.toString());
            st = connection.prepareStatement(query);
            log.info(st.toString());
            rs = st.executeQuery();
            redis_key = MD5(st.toString());
            while (rs.next()) {
                CountryUsageStats countryUsageStats = new CountryUsageStats();
                countryUsageStats.addCountry(rs.getString(1));
                countryUsageStats.addTotalRepos(rs.getString(2));
                countryUsageStats.addViews(rs.getString(3));
                countryUsageStats.addDownloads(rs.getString(4));
                total_views += Integer.parseInt(rs.getString(3));
                total_downloads += Integer.parseInt(rs.getString(4));

                countryList.add(countryUsageStats);
            }
            countryListAll.addViewsAll(Integer.toString(total_views));
            countryListAll.addDownloadsAll(Integer.toString(total_downloads));

            countryListAll.addCountryUsageStats(countryList);

        } catch (Exception e) {
            log.info(e);
            System.out.println(e);
        }

        try {
            jedis.put(redis_key, "result", toJson(countryListAll));
            jedis.put(redis_key, "persistent", "false");
            jedis.put(redis_key, "fetchMode", "3");
        } catch (Exception e) {
            System.out.println(e);
        } finally {
            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(st);
            DbUtils.closeQuietly(connection);
        }
        return countryListAll;
    }

    public CountryUsageStats executeCountryUsageStats(String query, String country) {
        CountryUsageStats countryUsageStats = new CountryUsageStats();
        String total_repos = " ";
        String views = " ";
        String downloads = " ";
        String redis_key = "";
        Connection connection = null;
        PreparedStatement st = null;
        ResultSet rs = null;
        int total_views = 0;
        int total_downloads = 0;

        try {
            connection = usageStatsDB.getConnection();
            st = connection.prepareStatement(query);
            
            redis_key = MD5(st.toString());
            //st.setString(1, country);
            log.info(st.toString());
            rs = st.executeQuery();

            while (rs.next()) {
                countryUsageStats.addCountry(country);
                countryUsageStats.addTotalRepos(rs.getString(1));
                countryUsageStats.addViews(rs.getString(2));
                countryUsageStats.addDownloads(rs.getString(3));

            }

        } catch (Exception e) {
            log.info(e);
            System.out.println(e);
        }

        try {
            jedis.put(redis_key, "result", toJson(countryUsageStats));
            jedis.put(redis_key, "persistent", "false");
            jedis.put(redis_key, "fetchMode", "3");
        } catch (Exception e) {
            System.out.println(e);
        } finally {
            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(st);
            DbUtils.closeQuietly(connection);
        }
        return countryUsageStats;
    }

    public List<CountryRepositories> executeCountryRepositories(String query) {

        List<CountryRepositories> countryReposList = new ArrayList<CountryRepositories>();

        String country = " ";
        String repository = " ";
        String redis_key = "";
        Connection connection = null;
        PreparedStatement st = null;
        ResultSet rs = null;
        try {
            connection = usageStatsDB.getConnection();
            log.info(connection.toString());
            st = connection.prepareStatement(query);
            log.info(st.toString());
            rs = st.executeQuery();
            redis_key = MD5(st.toString());
            while (rs.next()) {
                CountryRepositories countryRepository = new CountryRepositories();
                countryRepository.addCountry(rs.getString(1));
                countryRepository.addRepository(rs.getString(2));
                countryReposList.add(countryRepository);
            }

        } catch (Exception e) {
            System.out.println(e);
        }

        try {
            jedis.put(redis_key, "result", toJson(countryReposList));
            jedis.put(redis_key, "persistent", "false");
            jedis.put(redis_key, "fetchMode", "3");
        } catch (Exception e) {
            System.out.println(e);
        } finally {
            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(st);
            DbUtils.closeQuietly(connection);
        }

        return countryReposList;
    }

    public List<MonthlyUsageStats> executeMontlyUsageStatsForRepo(String query, String datasourceId) {
        List<MonthlyUsageStats> montlhyList = new ArrayList<MonthlyUsageStats>();

        String redis_key = "";
        Connection connection = null;
        PreparedStatement st = null;
        ResultSet rs = null;
        try {
            connection = usageStatsDB.getConnection();
            st = connection.prepareStatement(query);
            redis_key = MD5(st.toString());
            st.setString(1, datasourceId);
            log.info(connection.toString());
            rs = st.executeQuery();
            while (rs.next()) {
                MonthlyUsageStats monthlyUsageStats = new MonthlyUsageStats();
                monthlyUsageStats.addDate(rs.getString(1));
                monthlyUsageStats.addDownloads(rs.getString(2));
                monthlyUsageStats.addViews(rs.getString(3));
                montlhyList.add(monthlyUsageStats);
            }

        } catch (Exception e) {
            System.out.println(e);
        }

        try {
            jedis.put(redis_key, "result", toJson(montlhyList));
            jedis.put(redis_key, "persistent", "false");
            jedis.put(redis_key, "fetchMode", "3");
        } catch (Exception e) {
            System.out.println(e);
        } finally {
            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(st);
            DbUtils.closeQuietly(connection);
        }

        return montlhyList;
    }

    public UsageStats executeUsageStats(String query, List<String> values, String type) {

        UsageStats usageStats = new UsageStats();
        int total_views = 0;
        int total_downloads = 0;
        int page_views = 0;
        int openaire_downloads = 0;
        int openaire_views = 0;
        Connection connection = null;
        PreparedStatement st = null;
        ResultSet rs = null;
        try {
            connection = usageStatsDB.getConnection();
            st = connection.prepareStatement(query);
            int i = 1;
            for (String s : values) {
                st.setString(i, s);
                i++;
            }

            String redis_key = MD5(st.toString());

            String redis_result = jedis.get(redis_key, "result");
            if (redis_result != null) {
                return fromJson(redis_result);
            }

            rs = st.executeQuery();
            if (type.equals("result")) {
                while (rs.next()) {
                    if (rs.getString(1).equals("views") && rs.getString(4) != null && !rs.getString(4).equals("") && !rs.getString(4).equals("null")) {
                        usageStats.addViews(new RepositoryStats(rs.getString(3), rs.getString(2), rs.getString(4), rs.getString(5)));
                        total_views += Integer.parseInt(rs.getString(4));
                        openaire_views += Integer.parseInt(rs.getString(5));
                    } else if (rs.getString(1).equals("downloads") && rs.getString(4) != null && !rs.getString(4).equals("") && !rs.getString(4).equals("null")) {
                        usageStats.addDownloads(new RepositoryStats(rs.getString(3), rs.getString(2), rs.getString(4), "0"));
                        total_downloads += Integer.parseInt(rs.getString(4));
                        openaire_downloads += Integer.parseInt(rs.getString(5));
                    } else if (rs.getString(1).equals("pageviews") && rs.getString(4) != null && !rs.getString(4).equals("") && !rs.getString(4).equals("null")) {
                        page_views = Integer.parseInt(rs.getString(4));
                    }
                }
                usageStats.setTotal_views(Integer.toString(total_views));
                usageStats.setTotal_downloads(Integer.toString(total_downloads));
                usageStats.setPageViews(Integer.toString(page_views));
                usageStats.setTotal_openaire_views(Integer.toString(openaire_views));
                usageStats.setTotal_openaire_downloads(Integer.toString(openaire_downloads));
            } else if (type.equals("project") || type.equals("datasource")) {
                while (rs.next()) {
                    if (rs.getString(1).equals("views") && rs.getString(2) != null && !rs.getString(2).equals("") && !rs.getString(2).equals("null")) {
                        total_views += Integer.parseInt(rs.getString(2));
                        openaire_views += Integer.parseInt(rs.getString(3));
                    } else if (rs.getString(1).equals("downloads") && rs.getString(2) != null && !rs.getString(2).equals("") && !rs.getString(2).equals("null")) {
                        total_downloads += Integer.parseInt(rs.getString(2));
                        openaire_downloads += Integer.parseInt(rs.getString(3));
                    } else if (rs.getString(1).equals("pageviews") && rs.getString(2) != null && !rs.getString(2).equals("") && !rs.getString(2).equals("null")) {
                        page_views = Integer.parseInt(rs.getString(2));
                    }
                    /*
                    else if (rs.getString(1).equals("openaire") && rs.getString(2) != null && !rs.getString(2).equals("") && !rs.getString(2).equals("null")) {
                        openaire = Integer.parseInt(rs.getString(2));
                    }
                     */

                }
                usageStats.setTotal_views(Integer.toString(total_views));
                usageStats.setTotal_downloads(Integer.toString(total_downloads));
                usageStats.setPageViews(Integer.toString(page_views));
                usageStats.setTotal_openaire_views(Integer.toString(openaire_views));
                usageStats.setTotal_openaire_downloads(Integer.toString(openaire_downloads));
            }

            jedis.put(redis_key, "persistent", "false");
            jedis.put(redis_key, "query", st.toString());
            //jedis.put(redis_key, "result", toString(usageStats));
            jedis.put(redis_key, "result", toJson(usageStats));
            jedis.put(redis_key, "fetchMode", "3");

        } catch (Exception e) {
            log.error("Cannot execute query2 : ", e);

        } finally {
            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(st);
            DbUtils.closeQuietly(connection);
        }
        return usageStats;
    }

    public TotalStats executeTotalStats() {
        TotalStats totalStats = null;
        try {
            String redis_result = jedis.get("total_stats", "result");
            if (redis_result != null) {
                totalStats = fromJsonTotalStats(redis_result);
            } else {
                return updateTotalStats();
            }
        } catch (Exception e) {
            log.error("Cannot execute totalStats : ", e);
        }
        return totalStats;
    }

    public TotalStats updateTotalStats() {
        TotalStats totalStats = new TotalStats();
        Connection connection = null;
        PreparedStatement st = null;
        ResultSet rs = null;
        HashMap<Integer, List<MonthlyStats>> monthlyStatsMap = new HashMap<>();

        try {
            connection = usageStatsDB.getConnection();
            //st = connection.prepareStatement("SELECT count(distinct d.repository_id) AS repository, count(distinct d.result_id) AS items, sum(d.count) AS downloads, sum(v.count) AS views from public.downloads_stats d FULL OUTER JOIN public.views_stats v ON d.source=v.source AND d.repository_id=v.repository_id AND d.result_id=v.result_id AND d.date=v.date;");
            st = connection.prepareStatement("SELECT ndv(distinct repository_id) AS repository, ndv(distinct result_id) AS items, sum(downloads) AS downloads, sum(views) AS views FROM "+usagestatsImpalaDB+".usage_stats;");
            rs = st.executeQuery();
            rs.next();
            totalStats.setRepositories(rs.getInt(1));
            totalStats.setItems(rs.getInt(2));
            totalStats.setDownloads(rs.getInt(3));
            totalStats.setViews(rs.getInt(4));
            rs.close();
            st.close();

            //st = connection.prepareStatement("select coalesce(d.date,v.date) as month, count(distinct d.repository_id) as repository, count(distinct d.result_id) as items, sum(d.count) as downloads, sum(v.count) as views from public.downloads_stats d FULL OUTER JOIN public.views_stats v ON d.source=v.source AND d.repository_id=v.repository_id AND d.result_id=v.result_id AND d.date=v.date group by month order by month;");
            st = connection.prepareStatement("SELECT `date`, ndv(distinct repository_id) AS repository, ndv(distinct result_id) AS items, sum(downloads) AS downloads, sum(views) AS views FROM "+usagestatsImpalaDB+".usage_stats GROUP BY `date` ORDER BY `date`;");
            rs = st.executeQuery();
            while (rs.next()) {
                int year = Integer.parseInt(rs.getString(1).substring(0, 4));
                int month = Integer.parseInt(rs.getString(1).substring(5));
                MonthlyStats monthlyStats = new MonthlyStats();
                monthlyStats.setMonth(month);
                monthlyStats.setRepositories(rs.getInt(2));
                monthlyStats.setItems(rs.getInt(3));
                monthlyStats.setDownloads(rs.getInt(4));
                monthlyStats.setViews(rs.getInt(5));

                if (monthlyStatsMap.get(year) != null) {
                    monthlyStatsMap.get(year).add(monthlyStats);
                } else {
                    List<MonthlyStats> newList = new ArrayList<>();
                    newList.add(monthlyStats);
                    monthlyStatsMap.put(year, newList);

                }
            }
            rs.close();
            st.close();

            //st = connection.prepareStatement("SELECT COALESCE(SUBSTRING(d.date FROM 1 FOR 4), SUBSTRING(v.date FROM 1 FOR 4)) AS year, COUNT(DISTINCT d.repository_id) AS repository, COUNT(DISTINCT d.result_id) AS items, SUM(d.count) AS downloads, SUM(v.count) AS views FROM public.downloads_stats d FULL OUTER JOIN public.views_stats v ON d.source=v.source AND d.repository_id=v.repository_id AND d.result_id=v.result_id AND d.date=v.date GROUP BY year ORDER BY year;");
            st = connection.prepareStatement("SELECT SUBSTR(`date`,1,4) AS year, ndv(DISTINCT repository_id) AS repository, \n" +
                                                "ndv(DISTINCT result_id) AS items, SUM(downloads) AS downloads, SUM(views) AS views \n" +
                                                 "FROM "+usagestatsImpalaDB+".usage_stats GROUP BY year ORDER BY year;");
            rs = st.executeQuery();
            List<YearlyStats> yearlyStatsList = new ArrayList<>();
            while (rs.next()) {
                YearlyStats yearlyStats = new YearlyStats();
                yearlyStats.setYear(rs.getInt(1));
                yearlyStats.setRepositories(rs.getInt(2));
                yearlyStats.setItems(rs.getInt(3));
                yearlyStats.setDownloads(rs.getInt(4));
                yearlyStats.setViews(rs.getInt(5));
                yearlyStats.setMonthlyStats(monthlyStatsMap.get(rs.getInt(1)));
                yearlyStatsList.add(yearlyStats);
            }
            totalStats.setYearlyStats(yearlyStatsList);
            jedis.put("total_stats", "result", toJson(totalStats));
            jedis.put("total_stats", "persistent", "false");

        } catch (Exception e) {
            log.error("Cannot execute totalStats : ", e);

        } finally {
            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(st);
            DbUtils.closeQuietly(connection);
        }
        return totalStats;
    }

    private static TotalStats fromJsonTotalStats(String string) throws java.io.IOException {
        ObjectMapper objectMapper = new ObjectMapper();
        return objectMapper.readValue(string, TotalStats.class);
    }

    public String executeRepoId(String repositoryIdentifier, String report) {
        PreparedStatement st = null;
        Connection connection = null;
        ResultSet rs = null;
        log.info("database "+statsDB);
        try {
            connection = usageStatsDB.getConnection();
            String[] split = repositoryIdentifier.split(":");
            String openaire_id = "-1";
            switch (split[0].toLowerCase()) {
                case "openaire":
                    if (!report.equals("jr1")) {
                        st = connection.prepareStatement("select id from "+statsDB+".datasource where id=?");
                        st.setString(1, repositoryIdentifier.replaceFirst(split[0] + ":", ""));
                    } else {
                        st = connection.prepareStatement("select id from "+statsDB+".datasource where id=? AND (type='Journal' OR type='Journal Aggregator/Publisher')");
                        st.setString(1, repositoryIdentifier.replaceFirst(split[0] + ":", ""));
                    }

                    rs = st.executeQuery();
                    while (rs.next()) {
                        openaire_id = rs.getString(1);
                    }
                    return openaire_id;

                case "opendoar":
                    if (!report.equals("jr1")) {
                        st = connection.prepareStatement("select id from "+statsDB+".datasource_oids where oid=?");
                        st.setString(1, "opendoar____::" + repositoryIdentifier.replaceFirst(split[0] + ":", ""));
                    } else {
                        st = connection.prepareStatement("select distinct d.id from "+statsDB+".datasource d, "+statsDB+".datasource_oids di where di.oid=? and d.id=di.id and (type='Journal' OR type='Journal Aggregator/Publisher')");
                        st.setString(1, "opendoar____::" + repositoryIdentifier.replaceFirst(split[0] + ":", ""));
                    }

                    rs = st.executeQuery();
                    while (rs.next()) {
                        openaire_id = rs.getString(1);
                    }
                    return openaire_id;
                case "issn":
                    st = connection.prepareStatement("select distinct d.id from "+statsDB+".datasource d, "+statsDB+".datasource_oids di, "+statsDB+".datasource_results dr where d.id=dr.id and di.oid like ? and d.id=di.id and (type='Journal' OR type='Journal Aggregator/Publisher')");
                    st.setString(1, "%" + repositoryIdentifier.replaceFirst(split[0] + ":", "") + "%");

                    rs = st.executeQuery();
                    while (rs.next()) {
                        openaire_id = rs.getString(1);
                    }
                    return openaire_id;
                default:
                    return "-1";
            }
        } catch (Exception e) {
            log.error("Repository id failed: ", e);
        } finally {
            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(st);
            DbUtils.closeQuietly(connection);
        }
        return "-1";
    }

    public void executeItem(List<ReportItem> reportItems, String itemIdentifier, String repositoryIdentifier, String itemDataType, Date beginDate, Date endDate, String granularity) {
        String[] split = itemIdentifier.split(":");
    switch (split[0].toLowerCase()) {
            case "oid":
                executeOid(reportItems, itemIdentifier.replaceFirst(split[0] + ":", ""), repositoryIdentifier, itemDataType, beginDate, endDate, granularity);
                break;
            case "doi":
                executeDoi(reportItems, itemIdentifier.replaceFirst(split[0] + ":", ""), repositoryIdentifier, itemDataType, beginDate, endDate, granularity);
                break;
            case "openaire":
                executeOpenaire(reportItems, itemIdentifier.replaceFirst(split[0] + ":", ""), repositoryIdentifier, itemDataType, beginDate, endDate, granularity);
                break;
            default:
        }
    }

    private void executeOid(List<ReportItem> reportItems, String oid, String repositoryIdentifier, String itemDataType, Date beginDate, Date endDate, String granularity) {
        Connection connection = null;
        PreparedStatement st = null;
        ResultSet rs = null;
        try {
            connection = usageStatsDB.getConnection();
            //st = connection.prepareStatement("SELECT DISTINCT roid.id FROM public.result_oids roid, public.downloads_stats s WHERE s.result_id=roid.id AND roid.orid=? UNION SELECT DISTINCT roid.id FROM public.result_oids roid, public.views_stats s WHERE s.result_id=roid.id AND roid.orid=?");
            st = connection.prepareStatement("SELECT DISTINCT roid.id FROM "+statsDB+".result_oids roid, "+usagestatsImpalaDB+".usage_stats us WHERE us.result_id=roid.id AND roid.oid=?");
            st.setString(1, oid);
            //st.setString(2, oid);

            rs = st.executeQuery();

            while (rs.next()) {
                executeOpenaire(reportItems, rs.getString(1), repositoryIdentifier, itemDataType, beginDate, endDate, granularity);
            }
            connection.close();
        } catch (Exception e) {
            log.error("Oid to OpenAIRE id failed: ", e);
        } finally {
            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(st);
            DbUtils.closeQuietly(connection);
        }
    }

    private void executeDoi(List<ReportItem> reportItems, String doi, String repositoryIdentifier, String itemDataType, Date beginDate, Date endDate, String granularity) {
        Connection connection = null;
        PreparedStatement st = null;
        ResultSet rs = null;
        try {
            connection = usageStatsDB.getConnection();
            //st = connection.prepareStatement("SELECT DISTINCT poid.id FROM public.result_pids poid, public.downloads_stats s WHERE s.result_id=poid.id AND poid.type='doi' AND poid.pid=? UNION SELECT DISTINCT poid.id FROM public.result_pids poid, public.views_stats s WHERE s.result_id=poid.id AND poid.type='doi' AND poid.pid=?");
            st = connection.prepareStatement("SELECT DISTINCT poid.id FROM "+statsDB+".result_pids poid, "+usageStatsDB+".usage_stats us WHERE us.result_id=poid.id AND poid.type='Digital Object Identifier' AND poid.pid=?");
            st.setString(1, doi);
            //st.setString(2, doi);

            rs = st.executeQuery();

            while (rs.next()) {
                executeOpenaire(reportItems, rs.getString(1), repositoryIdentifier, itemDataType, beginDate, endDate, granularity);
            }
        } catch (Exception e) {
            log.error("Doi to OpenAIRE id failed: ", e);
        } finally {
            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(st);
            DbUtils.closeQuietly(connection);
        }
    }

    private void executeOpenaire(List<ReportItem> reportItems, String openaire, String repositoryIdentifier, String itemDataType, Date beginDate, Date endDate, String granularity) {
        SimpleDateFormat report_dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        SimpleDateFormat postgresFormat = new SimpleDateFormat("yyyy/MM");
        String beginDateStr = postgresFormat.format(beginDate);
        String endDateStr = postgresFormat.format(endDate);

        Connection connection = null;
        PreparedStatement st = null;
        ResultSet rs = null;

        /*
        Calendar startCalendar = Calendar.getInstance();
        startCalendar.setTime(beginDate);
        Calendar endCalendar = Calendar.getInstance();
        endCalendar.setTime(endDate);
        int diffYear = endCalendar.get(Calendar.YEAR) - startCalendar.get(Calendar.YEAR);
        int diffMonth = diffYear * 12 + endCalendar.get(Calendar.MONTH) - startCalendar.get(Calendar.MONTH);
         */
        try {
            connection = usageStatsDB.getConnection();
            if (repositoryIdentifier.equals("")) {
                if (itemDataType.equals("")) {
                    //st = connection.prepareStatement("SELECT res.repository_id, r.title, r.publisher, r.source, rc.type, pids.pid, d.name, res.ddate, oids.orid, res.downloads, res.views FROM (SELECT coalesce(ds.repository_id, vs.repository_id) AS repository_id, coalesce(ds.result_id, vs.result_id) AS result_id, coalesce(ds.date, vs.date) AS ddate, coalesce(ds.sum, 0) AS downloads, coalesce(vs.sum,0) AS views FROM (SELECT s.repository_id, s.result_id, s.date, sum(s.count) FROM public.downloads_stats s WHERE s.date>=? AND s.date<=? AND s.result_id=? GROUP BY s.repository_id, s.result_id, s.date) AS ds FULL OUTER JOIN (SELECT s.repository_id, s.result_id, s.date, sum(s.count) FROM public.views_stats s WHERE s.date>=? AND s.date<=? AND s.result_id=? GROUP BY s.repository_id, s.result_id, s.date) AS vs ON ds.result_id=vs.result_id AND ds.date=vs.date) AS res JOIN public.result r ON res.result_id=r.id JOIN public.datasource d ON d.id=res.repository_id JOIN public.result_classifications rc ON rc.id=r.id LEFT JOIN (SELECT pids.id, string_agg(pids.pid, '#!#') AS pid FROM public.result_pids pids WHERE pids.id=? AND type='doi' GROUP BY pids.id) AS pids ON pids.id=r.id LEFT JOIN (SELECT oids.id, string_agg(oids.orid, '#!#') AS orid FROM public.result_oids oids WHERE oids.id=? GROUP BY oids.id) AS oids ON oids.id=r.id ORDER BY res.repository_id, res.ddate;");
                    //st = connection.prepareStatement("SELECT res.repository_id, r.title, r.publisher, r.source, rc.type, pids.pid, d.name, res.date, oids.orid, res.downloads, res.views FROM (SELECT us.repository_id, us.result_id, us.date, us.downloads, us.views FROM usage_stats us WHERE us.date>=? AND us.date<=? AND us.result_id=?) AS res JOIN public.result r ON res.result_id=r.id JOIN public.datasource d ON d.id=res.repository_id JOIN public.result_classifications rc ON rc.id=r.id LEFT JOIN (SELECT pids.id, string_agg(pids.pid, '#!#') AS pid FROM public.result_pids pids WHERE pids.id=? AND type='doi' GROUP BY pids.id) AS pids ON pids.id=r.id LEFT JOIN (SELECT oids.id, string_agg(oids.orid, '#!#') AS orid FROM public.result_oids oids WHERE oids.id=? GROUP BY oids.id) AS oids ON oids.id=r.id ORDER BY res.repository_id, res.date;");
                    st = connection.prepareStatement("SELECT distinct res.repository_id, r.title, r.publisher, r.source, rc.type, pids.pid, d.name, res.`date`, oids.oid, res.downloads, res.views "
                            + "FROM (SELECT us.repository_id, us.result_id, us.`date`, us.downloads, us.views FROM "+usagestatsImpalaDB+".usage_stats us "
                            + "WHERE us.`date`>=? AND us.`date`<=? AND us.result_id=?) AS res "
                            + "JOIN "+statsDB+".result r ON res.result_id=r.id "
                            + "JOIN "+statsDB+".datasource d ON d.id=res.repository_id "
                            + "JOIN (select id, group_concat(type,',') as type FROM "+statsDB+".result_classifications where id=? "
                            + "GROUP by id) rc ON rc.id=r.id "
                            + "LEFT JOIN (SELECT pids.id, group_concat(pids.pid, '#!#') AS pid FROM "+statsDB+".result_pids pids "
                            + "WHERE pids.id=? AND type='Digital Object Identifier' GROUP BY pids.id) AS pids ON pids.id=r.id "
                            + "LEFT JOIN (SELECT id, group_concat(oids.oid, '#!#') AS oid FROM "+statsDB+".result_oids oids "
                            + "WHERE oids.id=? GROUP BY oids.id) AS oids ON oids.id=r.id ORDER BY res.repository_id, res.`date`;");
                    st.setString(1, beginDateStr);
                    st.setString(2, endDateStr);
                    st.setString(3, openaire);
                    //st.setString(4, beginDateStr);
                    //st.setString(5, endDateStr);
                    //st.setString(6, openaire);
                    st.setString(4, openaire);
                    st.setString(5, openaire);
                    st.setString(6, openaire);
                } else {
                    //st = connection.prepareStatement("SELECT res.repository_id, r.title, r.publisher, r.source, rc.type, pids.pid, d.name, res.ddate, oids.orid, res.downloads, res.views FROM (SELECT coalesce(ds.repository_id, vs.repository_id) AS repository_id, coalesce(ds.result_id, vs.result_id) AS result_id, coalesce(ds.date, vs.date) AS ddate, coalesce(ds.sum, 0) AS downloads, coalesce(vs.sum,0) AS views FROM (SELECT s.repository_id, s.result_id, s.date, sum(s.count) FROM public.downloads_stats s WHERE s.date>=? AND s.date<=? AND s.result_id=? GROUP BY s.repository_id, s.result_id, s.date) AS ds FULL OUTER JOIN (SELECT s.repository_id, s.result_id, s.date, sum(s.count) FROM public.views_stats s WHERE s.date>=? AND s.date<=? AND s.result_id=? GROUP BY s.repository_id, s.result_id, s.date) AS vs ON ds.result_id=vs.result_id AND ds.date=vs.date) AS res JOIN public.result r ON res.result_id=r.id JOIN public.datasource d ON d.id=res.repository_id JOIN public.result_classifications rc ON rc.id=r.id AND rc.type=? LEFT JOIN (SELECT pids.id, string_agg(pids.pid, '#!#') AS pid FROM public.result_pids pids WHERE pids.id=? AND type='doi' GROUP BY pids.id) AS pids ON pids.id=r.id LEFT JOIN (SELECT oids.id, string_agg(oids.orid, '#!#') AS orid FROM public.result_oids oids WHERE oids.id=? GROUP BY oids.id) AS oids ON oids.id=r.id ORDER BY res.repository_id, res.ddate;");
                    st = connection.prepareStatement("SELECT distinct res.repository_id, r.title, r.publisher, r.source, rc.type, pids.pid, d.name, res.`date`, oids.oid, res.downloads, "
                            + "res.views FROM (SELECT us.repository_id, us.result_id, us.`date`, us.downloads, us.views FROM "+usagestatsImpalaDB+".usage_stats us "
                            + "WHERE us.`date`>=? AND us.`date`<=? AND us.result_id=?) AS res "
                            + "JOIN "+statsDB+".result r ON res.result_id=r.id "
                            + "JOIN "+statsDB+".datasource d ON d.id=res.repository_id "
                            + "JOIN "+statsDB+".result_classifications rc ON rc.id=r.id AND rc.type=? "
                            + "LEFT JOIN (SELECT pids.id, group_concat(pids.pid, '#!#') AS pid "
                            + "FROM "+statsDB+".result_pids pids WHERE pids.id=? "
                            + "AND type='Digital Object Identifier' GROUP BY pids.id) AS pids ON pids.id=r.id "
                            + "LEFT JOIN (SELECT oids.id, group_concat(oids.oid, '#!#') AS oid "
                            + "FROM "+statsDB+".result_oids oids WHERE oids.id=? "
                            + "GROUP BY oids.id) AS oids ON oids.id=r.id ORDER BY res.repository_id, res.`date`;");
                    st.setString(1, beginDateStr);
                    st.setString(2, endDateStr);
                    st.setString(3, openaire);
                    //st.setString(4, beginDateStr);
                    //st.setString(5, endDateStr);
                    //st.setString(6, openaire);
                    st.setString(4, itemDataType);
                    st.setString(5, openaire);
                    st.setString(6, openaire);
                }
            } else {
                if (itemDataType.equals("")) {
                    //st = connection.prepareStatement("SELECT res.repository_id, r.title, r.publisher, r.source, rc.type, pids.pid, d.name, res.ddate, oids.orid, res.downloads, res.views FROM (SELECT coalesce(ds.repository_id, vs.repository_id) AS repository_id, coalesce(ds.result_id, vs.result_id) AS result_id, coalesce(ds.date, vs.date) AS ddate, coalesce(ds.sum, 0) AS downloads, coalesce(vs.sum,0) AS views FROM (SELECT s.repository_id, s.result_id, s.date, sum(s.count) FROM public.downloads_stats s WHERE s.date>=? AND s.date<=? AND s.result_id=? AND s.repository_id=? GROUP BY s.repository_id, s.result_id, s.date) AS ds FULL OUTER JOIN (SELECT s.repository_id, s.result_id, s.date, sum(s.count) FROM public.views_stats s WHERE s.date>=? AND s.date<=? AND s.result_id=? AND s.repository_id=? GROUP BY s.repository_id, s.result_id, s.date) AS vs ON ds.result_id=vs.result_id AND ds.date=vs.date) AS res JOIN public.result r ON res.result_id=r.id JOIN public.datasource d ON d.id=res.repository_id JOIN public.result_classifications rc ON rc.id=r.id LEFT JOIN (SELECT pids.id, string_agg(pids.pid, '#!#') AS pid FROM public.result_pids pids WHERE pids.id=? AND type='doi' GROUP BY pids.id) AS pids ON pids.id=r.id LEFT JOIN (SELECT oids.id, string_agg(oids.orid, '#!#') AS orid FROM public.result_oids oids WHERE oids.id=? GROUP BY oids.id) AS oids ON oids.id=r.id ORDER BY res.repository_id, res.ddate;");
                    st = connection.prepareStatement("SELECT distinct res.repository_id, r.title, r.publisher, r.source, rc.type, pids.pid, d.name, res.`date`, oids.oid, res.downloads, res.views "
                            + "FROM (SELECT us.repository_id, us.result_id, us.`date`, us.downloads, us.views "
                            + "FROM "+usagestatsImpalaDB+".usage_stats us WHERE us.`date`>=? AND us.`date`<=? AND us.result_id=? AND us.repository_id=?) AS res "
                            + "JOIN "+statsDB+".result r ON res.result_id=r.id JOIN "+statsDB+".datasource d ON d.id=res.repository_id "
                            + "JOIN (select id, group_concat(type,',') as type from "+statsDB+".result_classifications where id=? group by id) rc ON rc.id=r.id "
                            + "LEFT JOIN (SELECT pids.id, group_concat(pids.pid, '#!#') AS pid FROM "+statsDB+".result_pids pids "
                            + "WHERE pids.id=? AND type='Digital Object Identifier' GROUP BY pids.id) AS pids ON pids.id=r.id "
                            + "LEFT JOIN (SELECT oids.id, group_concat(oids.oid, '#!#') AS oid FROM "+statsDB+".result_oids oids "
                            + "WHERE oids.id=? GROUP BY oids.id) AS oids ON oids.id=r.id ORDER BY res.repository_id, res.`date`;");
                    st.setString(1, beginDateStr);
                    st.setString(2, endDateStr);
                    st.setString(3, openaire);
                    st.setString(4, repositoryIdentifier);
                    //st.setString(5, beginDateStr);
                    //st.setString(6, endDateStr);
                    //st.setString(7, openaire);
                    //st.setString(8, repositoryIdentifier);
                    st.setString(5, openaire);
                    st.setString(6, openaire);
                    st.setString(7, openaire);
                } else {
                    //st = connection.prepareStatement("SELECT res.repository_id, r.title, r.publisher, r.source, rc.type, pids.pid, d.name, res.ddate, oids.orid, res.downloads, res.views FROM (SELECT coalesce(ds.repository_id, vs.repository_id) AS repository_id, coalesce(ds.result_id, vs.result_id) AS result_id, coalesce(ds.date, vs.date) AS ddate, coalesce(ds.sum, 0) AS downloads, coalesce(vs.sum,0) AS views FROM (SELECT s.repository_id, s.result_id, s.date, sum(s.count) FROM public.downloads_stats s WHERE s.date>=? AND s.date<=? AND s.result_id=? AND s.repository_id=? GROUP BY s.repository_id, s.result_id, s.date) AS ds FULL OUTER JOIN (SELECT s.repository_id, s.result_id, s.date, sum(s.count) FROM public.views_stats s WHERE s.date>=? AND s.date<=? AND s.result_id=? AND s.repository_id=? GROUP BY s.repository_id, s.result_id, s.date) AS vs ON ds.result_id=vs.result_id AND ds.date=vs.date) AS res JOIN public.result r ON res.result_id=r.id JOIN public.datasource d ON d.id=res.repository_id JOIN public.result_classifications rc ON rc.id=r.id AND rc.type=? LEFT JOIN (SELECT pids.id, string_agg(pids.pid, '#!#') AS pid FROM public.result_pids pids WHERE pids.id=? AND type='doi' GROUP BY pids.id) AS pids ON pids.id=r.id LEFT JOIN (SELECT oids.id, string_agg(oids.orid, '#!#') AS orid FROM public.result_oids oids WHERE oids.id=? GROUP BY oids.id) AS oids ON oids.id=r.id ORDER BY res.repository_id, res.ddate;");
                    st = connection.prepareStatement("SELECT distinct res.repository_id, r.title, r.publisher, r.source, rc.type, pids.pid, d.name, res.`date`, oids.oid, res.downloads,res.views "
                            + "FROM (SELECT us.repository_id, us.result_id, us.`date`, us.downloads, us.views FROM "+usagestatsImpalaDB+".usage_stats us "
                            + "WHERE us.`date`>=? AND us.`date`<=? AND us.result_id=? AND us.repository_id=?) AS res "
                            + "JOIN "+statsDB+".result r ON res.result_id=r.id JOIN "+statsDB+".datasource d ON d.id=res.repository_id "
                            + "JOIN "+statsDB+".result_classifications rc ON rc.id=r.id AND rc.type=?' "
                            + "LEFT JOIN (SELECT pids.id, group_concat(pids.pid, '#!#') AS pid FROM "+statsDB+".result_pids pids "
                            + "WHERE pids.id=? AND type='Digital Object Identifier' GROUP BY pids.id) AS pids ON pids.id=r.id "
                            + "LEFT JOIN (SELECT oids.id, group_concat(oids.oid, '#!#') AS oid "
                            + "FROM "+statsDB+".result_oids oids WHERE oids.id=? "
                            + "GROUP BY oids.id) AS oids ON oids.id=r.id ORDER BY res.repository_id, res.`date`;");
                    st.setString(1, beginDateStr);
                    st.setString(2, endDateStr);
                    st.setString(3, openaire);
                    st.setString(4, repositoryIdentifier);
                    //st.setString(5, beginDateStr);
                    //st.setString(6, endDateStr);
                    //st.setString(7, openaire);
                    //st.setString(8, repositoryIdentifier);
                    st.setString(5, itemDataType);
                    st.setString(6, openaire);
                    st.setString(7, openaire);
                }
            }

            rs = st.executeQuery();
            String repository = "";
            String lastDate = "";
            ReportItem reportItem = null;
            int ft_total = 0;
            int abstr = 0;

            if (granularity.equalsIgnoreCase("totals")) {
                while (rs.next()) {
                    if (!rs.getString(1).equals(repository)) {
                        if (reportItem != null) {
                            reportItem.addPerformance(new ItemPerformance(report_dateFormat.format(beginDate), report_dateFormat.format(endDate), Integer.toString(ft_total), Integer.toString(abstr)));
                            reportItems.add(reportItem);
                        }
                        repository = rs.getString(1);
                        reportItem = new ReportItem(rs.getString(3), rs.getString(7), rs.getString(5), rs.getString(2));
                        reportItem.addIdentifier(new ItemIdentifier("OpenAIRE", openaire));
                        reportItem.addIdentifier(new ItemIdentifier("URLs", rs.getString(4)));
                        if (rs.getString(9) != null && !rs.getString(9).equals("")) {
                            if (rs.getString(9).contains("#!#")) {
                                reportItem.addIdentifier(new ItemIdentifier("OAI", rs.getString(9).substring(0, rs.getString(9).indexOf("#!#"))));
                            } else {
                                reportItem.addIdentifier(new ItemIdentifier("OAI", rs.getString(9)));
                            }
                        }
                        if (rs.getString(6) != null && !rs.getString(6).equals("")) {
                            if (rs.getString(6).contains("#!#")) {
                                reportItem.addIdentifier(new ItemIdentifier("DOI", rs.getString(6).substring(0, rs.getString(6).indexOf("#!#"))));
                            } else {
                                reportItem.addIdentifier(new ItemIdentifier("DOI", rs.getString(6)));
                            }
                        }
                        ft_total = 0;
                        abstr = 0;
                    }
                    ft_total += rs.getInt(10);
                    abstr += rs.getInt(11);
                }
                if (reportItem != null) {
                    reportItem.addPerformance(new ItemPerformance(report_dateFormat.format(beginDate), report_dateFormat.format(endDate), Integer.toString(ft_total), Integer.toString(abstr)));
                    reportItems.add(reportItem);
                }
            } else if (granularity.equalsIgnoreCase("monthly")) {
                Calendar endCal = Calendar.getInstance();
                endCal.setTime(postgresFormat.parse(endDateStr));
                endCal.add(Calendar.MONTH, 1);
                Date endDateForZeros = endCal.getTime();
                while (rs.next()) {
                    if (!rs.getString(1).equals(repository)) {
                        if (reportItem != null) {
                            fillWithZeros(postgresFormat.parse(lastDate), endDateForZeros, reportItem);
                            reportItems.add(reportItem);
                        }
                        repository = rs.getString(1);
                        lastDate = beginDateStr;
                        reportItem = new ReportItem(rs.getString(3), rs.getString(7), rs.getString(5), rs.getString(2));
                        reportItem.addIdentifier(new ItemIdentifier("OpenAIRE", openaire));
                        reportItem.addIdentifier(new ItemIdentifier("URLs", rs.getString(4)));
                        if (rs.getString(9) != null && !rs.getString(9).equals("")) {
                            if (rs.getString(9).contains("#!#")) {
                                String allOAIs = rs.getString(9);
                                String[] oaiArray = allOAIs.split("#!#");
                                for (int i = 0; i < oaiArray.length; i++) {
                                    reportItem.addIdentifier(new ItemIdentifier("OAI", oaiArray[i]));
                                }
                                //reportItem.addIdentifier(new ItemIdentifier("OAI", rs.getString(9).substring(0, rs.getString(9).indexOf("#!#"))));

                                //reportItem.addIdentifier(new ItemIdentifier("OAI", rs.getString(9).substring(0, rs.getString(9).indexOf("#!#"))));
                            } else {
                                reportItem.addIdentifier(new ItemIdentifier("OAI", rs.getString(9)));
                            }
                        }
                        if (rs.getString(6) != null && !rs.getString(6).equals("")) {
                            if (rs.getString(6).contains("#!#")) {
                                reportItem.addIdentifier(new ItemIdentifier("DOI", rs.getString(6).substring(0, rs.getString(6).indexOf("#!#"))));
                            } else {
                                reportItem.addIdentifier(new ItemIdentifier("DOI", rs.getString(6)));
                            }
                        }
                    }
                    fillWithZeros(postgresFormat.parse(lastDate), postgresFormat.parse(rs.getString(8)), reportItem);
                    Calendar endC = Calendar.getInstance();
                    endC.setTime(postgresFormat.parse(rs.getString(8)));
                    endC.set(Calendar.DATE, endC.getActualMaximum(Calendar.DATE));
                    if (reportItem != null) {
                        reportItem.addPerformance(new ItemPerformance(report_dateFormat.format(postgresFormat.parse(rs.getString(8))), report_dateFormat.format(endC.getTime()), rs.getString(10), rs.getString(11)));
                    }
                    endC.setTime(postgresFormat.parse(rs.getString(8)));
                    endC.add(Calendar.MONTH, 1);
                    lastDate = postgresFormat.format(endC.getTime());
                }
                if (reportItem != null) {
                    fillWithZeros(postgresFormat.parse(lastDate), endDateForZeros, reportItem);
                    reportItems.add(reportItem);
                }
            }
        } catch (Exception e) {
            log.error("Single Item Report failed: ", e);
        } finally {
            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(st);
            DbUtils.closeQuietly(connection);
        }
    }

    public void executeRepo(List<ReportItem> reportItems, String repositoryIdentifier, String itemDataType, Date beginDate, Date endDate, String granularity) {
        SimpleDateFormat report_dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        SimpleDateFormat postgresFormat = new SimpleDateFormat("yyyy/MM");
        String beginDateStr = postgresFormat.format(beginDate);
        String endDateStr = postgresFormat.format(endDate);

        Connection connection = null;
        PreparedStatement st = null;
        ResultSet rs = null;

        try {
            connection = usageStatsDB.getConnection();

            if (repositoryIdentifier.equals("")) {
                if (itemDataType.equals("")) {
                    //st = connection.prepareStatement("SELECT d.id, d.name, d.websiteurl, dois.orid, res.ddate, res.downloads, res.views FROM (SELECT coalesce(ds.source, vs.source), coalesce(ds.repository_id, vs.repository_id) AS repository_id, coalesce(ds.date, vs.date) AS ddate, coalesce(ds.sum, 0) AS downloads, coalesce(vs.sum,0) AS views FROM (SELECT s.source, s.repository_id, s.date, sum(s.count) FROM public.downloads_stats s WHERE s.date>=? AND s.date<=? GROUP BY s.source, s.repository_id, s.date) AS ds FULL OUTER JOIN (SELECT s.source, s.repository_id, s.date, sum(s.count) FROM public.views_stats s WHERE s.date>=? AND s.date<=? GROUP BY s.source, s.repository_id, s.date) AS vs ON ds.source=vs.source AND ds.repository_id=vs.repository_id AND ds.date=vs.date) AS res JOIN public.datasource d ON d.id=res.repository_id JOIN public.datasource_oids dois ON d.id=dois.id WHERE dois.orid LIKE 'opendoar%' ORDER BY d.id, d.name, res.ddate ASC;");
                    st = connection.prepareStatement("SELECT d.id, d.name, d.websiteurl, dois.oid, res.`date`, res.downloads, res.views "
                            + "FROM (SELECT us.source, us.repository_id, us.`date`, sum(us.downloads) AS downloads, sum(us.views) AS views "
                            + "FROM "+usagestatsImpalaDB+".usage_stats us WHERE us.`date`>=? AND us.`date`<=? GROUP BY us.source, us.repository_id, us.`date`) "
                            + "AS res JOIN "+statsDB+".datasource d ON d.id=res.repository_id "
                            + "JOIN "+statsDB+".datasource_oids dois ON d.id=dois.id WHERE dois.oid "
                            + "LIKE 'opendoar%' ORDER BY d.id, d.name, res.`date` ASC;");
                    st.setString(1, beginDateStr);
                    st.setString(2, endDateStr);
                    //st.setString(3, beginDateStr);
                    //st.setString(4, endDateStr);
                } else {
                    //st = connection.prepareStatement("SELECT d.id, d.name, d.websiteurl, dois.orid, res.ddate, res.downloads, res.views FROM (SELECT coalesce(ds.source, vs.source), coalesce(ds.repository_id, vs.repository_id) AS repository_id, coalesce(ds.date, vs.date) AS ddate, coalesce(ds.sum, 0) AS downloads, coalesce(vs.sum,0) AS views FROM (SELECT s.source, s.repository_id, s.date, sum(s.count) FROM public.downloads_stats s, result_classifications rc WHERE rc.id=s.result_id AND s.date>=? AND s.date<=? AND rc.type=? GROUP BY s.source, s.repository_id, s.date) AS ds FULL OUTER JOIN (SELECT s.source, s.repository_id, s.date, sum(s.count) FROM public.views_stats s, public.result_classifications rc WHERE rc.id=s.result_id AND s.date>=? AND s.date<=? AND rc.type=? GROUP BY s.source, s.repository_id, s.date) AS vs ON ds.source=vs.source AND ds.repository_id=vs.repository_id AND ds.date=vs.date) AS res JOIN public.datasource d ON d.id=res.repository_id JOIN public.datasource_oids dois ON d.id=dois.id WHERE dois.orid LIKE 'opendoar%' ORDER BY d.id, d.name, res.ddate ASC;");
                    st = connection.prepareStatement("SELECT d.id, d.name, d.websiteurl, dois.oid, res.`date`, res.downloads, res.views "
                            + "FROM (SELECT us.source, us.repository_id, us.`date`, sum(us.downloads) AS downloads, sum(us.views) AS views "
                            + "FROM "+usagestatsImpalaDB+".usage_stats us, "+statsDB+".result_classifications rc "
                            + "WHERE rc.id=us.result_id AND us.`date`>=? AND us.`date`<=? AND rc.type=? "
                            + "GROUP BY us.source, us.repository_id, us.`date`) AS res "
                            + "JOIN "+statsDB+".datasource d ON d.id=res.repository_id "
                            + "JOIN "+statsDB+".datasource_oids dois ON d.id=dois.id WHERE dois.oid LIKE 'opendoar%' "
                            + "ORDER BY d.id, d.name, res.`date` ASC;");
                    st.setString(1, beginDateStr);
                    st.setString(2, endDateStr);
                    st.setString(3, itemDataType);
                    //st.setString(4, beginDateStr);
                    //st.setString(5, endDateStr);
                    //st.setString(6, itemDataType);
                }
            } else {
                if (itemDataType.equals("")) {
                    //st = connection.prepareStatement("SELECT d.id, d.name, d.websiteurl, dois.orid, res.ddate, res.downloads, res.views FROM (SELECT coalesce(ds.source, vs.source), coalesce(ds.repository_id, vs.repository_id) AS repository_id, coalesce(ds.date, vs.date) AS ddate, coalesce(ds.sum, 0) AS downloads, coalesce(vs.sum,0) AS views FROM (SELECT s.source, s.repository_id, s.date, sum(s.count) FROM public.downloads_stats s WHERE s.date>=? AND s.date<=? AND s.repository_id=? GROUP BY s.source, s.repository_id, s.date) AS ds FULL OUTER JOIN (SELECT s.source, s.repository_id, s.date, sum(s.count) FROM public.views_stats s WHERE s.date>=? AND s.date<=? AND s.repository_id=? GROUP BY s.source, s.repository_id, s.date) AS vs ON ds.source=vs.source AND ds.repository_id=vs.repository_id AND ds.date=vs.date) AS res JOIN public.datasource d ON d.id=res.repository_id JOIN public.datasource_oids dois ON d.id=dois.id WHERE dois.orid LIKE 'opendoar%' ORDER BY d.id, d.name, res.ddate ASC;");
                    st = connection.prepareStatement("SELECT d.id, d.name, d.websiteurl, dois.oid, res.`date`, res.downloads, res.views "
                            + "FROM (SELECT us.source, us.repository_id, us.`date`, sum(us.downloads) AS downloads, sum(us.views) AS views "
                            + "FROM "+usagestatsImpalaDB+".usage_stats us WHERE us.`date`>=? AND us.`date`<=? AND us.repository_id=? "
                            + "GROUP BY us.source, us.repository_id, us.`date`) AS res "
                            + "JOIN "+statsDB+".datasource d ON d.id=res.repository_id "
                            + "JOIN "+statsDB+".datasource_oids dois ON d.id=dois.id "
                            + "WHERE dois.oid LIKE 'opendoar%' ORDER BY d.id, d.name, res.`date` ASC;");
                    st.setString(1, beginDateStr);
                    st.setString(2, endDateStr);
                    st.setString(3, repositoryIdentifier);
                    //st.setString(4, beginDateStr);
                    //st.setString(5, endDateStr);
                    //st.setString(6, repositoryIdentifier);
                } else {
                    //st = connection.prepareStatement("SELECT d.id, d.name, d.websiteurl, dois.orid, res.ddate, res.downloads, res.views FROM (SELECT coalesce(ds.source, vs.source), coalesce(ds.repository_id, vs.repository_id) AS repository_id, coalesce(ds.date, vs.date) AS ddate, coalesce(ds.sum, 0) AS downloads, coalesce(vs.sum,0) AS views FROM (SELECT s.source, s.repository_id, s.date, sum(s.count) FROM public.downloads_stats s, public.result_classifications rc WHERE rc.id=s.result_id AND s.date>=? AND s.date<=? AND rc.type=? AND s.repository_id=? GROUP BY s.source, s.repository_id, s.date) AS ds FULL OUTER JOIN (SELECT s.source, s.repository_id, s.date, sum(s.count) FROM public.views_stats s, public.result_classifications rc WHERE rc.id=s.result_id AND s.date>=? AND s.date<=? AND rc.type=? AND s.repository_id=? GROUP BY s.source, s.repository_id, s.date) AS vs ON ds.source=vs.source AND ds.repository_id=vs.repository_id AND ds.date=vs.date) AS res JOIN public.datasource d ON d.id=res.repository_id JOIN public.datasource_oids dois ON d.id=dois.id WHERE dois.orid LIKE 'opendoar%' ORDER BY d.id, d.name, res.ddate ASC;");
                    st = connection.prepareStatement("SELECT d.id, d.name, d.websiteurl, dois.oid, res.`date`, res.downloads, res.views "
                            + "FROM (SELECT us.source, us.repository_id, us.`date`, sum(us.downloads) AS downloads, sum(us.views) AS views "
                            + "FROM "+usagestatsImpalaDB+".usage_stats us, "+statsDB+".result_classifications rc "
                            + "WHERE rc.id=us.result_id AND us.`date`>=? AND us.`date`<=? AND rc.type=? "
                            + "AND us.repository_id=? GROUP BY us.source, us.repository_id, us.`date`) AS res "
                            + "JOIN "+statsDB+".datasource d ON d.id=res.repository_id "
                            + "JOIN "+statsDB+".datasource_oids dois ON d.id=dois.id "
                            + "WHERE dois.oid LIKE 'opendoar%' ORDER BY d.id, d.name, res.`date` ASC;");
                    st.setString(1, beginDateStr);
                    st.setString(2, endDateStr);
                    st.setString(3, itemDataType);
                    st.setString(4, repositoryIdentifier);
                    //st.setString(5, beginDateStr);
                    //st.setString(6, endDateStr);
                    //st.setString(7, itemDataType);
                    //st.setString(8, repositoryIdentifier);
                }
            }
            //log.error("RR STATEMENT:   " + st);

            /*
            String redis_key = MD5(st.toString());

            if (jedis.hasKey(redis_key, "result")) {
                reportItems.addAll(reportItemsFromJson((String) jedis.get(redis_key, "result")));
                st.close();
                connection.close();
                return;
            }
             */
            rs = st.executeQuery();
            String repository = "";
            String lastDate = "";
            ReportItem reportItem = null;

            /*
            Calendar startCalendar = Calendar.getInstance();
            startCalendar.setTime(beginDate);
            Calendar endCalendar = Calendar.getInstance();
            endCalendar.setTime(endDate);
             */
            int ft_total = 0;
            int abstr = 0;
            if (granularity.equalsIgnoreCase("totals")) {
                while (rs.next()) {
                    if (!rs.getString(1).equals(repository)) {
                        if (reportItem != null) {
                            reportItem.addPerformance(new ItemPerformance(report_dateFormat.format(beginDate), report_dateFormat.format(endDate), Integer.toString(ft_total), Integer.toString(abstr)));
                            reportItems.add(reportItem);
                        }
                        repository = rs.getString(1);
                        reportItem = new ReportItem(null, rs.getString(2), "Platform", null);
                        reportItem.addIdentifier(new ItemIdentifier("OpenAIRE", rs.getString(1)));
                        reportItem.addIdentifier(new ItemIdentifier("OpenDOAR", rs.getString(4).substring(rs.getString(4).lastIndexOf(":") + 1)));
                        reportItem.addIdentifier(new ItemIdentifier("URL", rs.getString(3)));
                        ft_total = 0;
                        abstr = 0;
                    }
                    ft_total += rs.getInt(6);
                    abstr += rs.getInt(7);
                }
                if (reportItem != null) {
                    reportItem.addPerformance(new ItemPerformance(report_dateFormat.format(beginDate), report_dateFormat.format(endDate), Integer.toString(ft_total), Integer.toString(abstr)));
                    reportItems.add(reportItem);
                }
            } else if (granularity.equalsIgnoreCase("monthly")) {
                Calendar endCal = Calendar.getInstance();
                endCal.setTime(postgresFormat.parse(endDateStr));
                endCal.add(Calendar.MONTH, 1);
                Date endDateForZeros = endCal.getTime();
                while (rs.next()) {
                    if (!rs.getString(1).equals(repository)) {
                        if (reportItem != null) {
                            fillWithZeros(postgresFormat.parse(lastDate), endDateForZeros, reportItem);
                            reportItems.add(reportItem);
                        }
                        repository = rs.getString(1);
                        lastDate = beginDateStr;
                        reportItem = new ReportItem(null, rs.getString(2), "Platform", null);
                        reportItem.addIdentifier(new ItemIdentifier("OpenAIRE", rs.getString(1)));
                        reportItem.addIdentifier(new ItemIdentifier("OpenDOAR", rs.getString(4).substring(rs.getString(4).lastIndexOf(":") + 1)));
                        reportItem.addIdentifier(new ItemIdentifier("URL", rs.getString(3)));
                    }
                    fillWithZeros(postgresFormat.parse(lastDate), postgresFormat.parse(rs.getString(5)), reportItem);
                    Calendar endC = Calendar.getInstance();
                    endC.setTime(postgresFormat.parse(rs.getString(5)));
                    endC.set(Calendar.DATE, endC.getActualMaximum(Calendar.DATE));
                    if (reportItem != null) {
                        reportItem.addPerformance(new ItemPerformance(report_dateFormat.format(postgresFormat.parse(rs.getString(5))), report_dateFormat.format(endC.getTime()), rs.getString(6), rs.getString(7)));
                    }
                    endC.setTime(postgresFormat.parse(rs.getString(5)));
                    endC.add(Calendar.MONTH, 1);
                    lastDate = postgresFormat.format(endC.getTime());
                }
                if (reportItem != null) {
                    fillWithZeros(postgresFormat.parse(lastDate), endDateForZeros, reportItem);
                    reportItems.add(reportItem);
                }
            }

            /*
            jedis.put(redis_key, "persistent", "false");
            jedis.put(redis_key, "query", st.toString());
            jedis.put(redis_key, "result", toJson(reportItems));
            jedis.put(redis_key, "fetchMode", "3");
             */
            rs.close();
            st.close();
            connection.close();
        } catch (Exception e) {
            log.error("Repository Report failed: ", e);
        } finally {
            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(st);
            DbUtils.closeQuietly(connection);
        }
    }

    public void executeJournal(List<ReportItem> reportItems, String repositoryIdentifier, String itemDataType, Date beginDate, Date endDate, String granularity) {
        SimpleDateFormat report_dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        SimpleDateFormat postgresFormat = new SimpleDateFormat("yyyy/MM");
        String beginDateStr = postgresFormat.format(beginDate);
        String endDateStr = postgresFormat.format(endDate);

        Connection connection = null;
        PreparedStatement st = null;
        ResultSet rs = null;

        try {
            connection = usageStatsDB.getConnection();

            if (repositoryIdentifier.equals("")) {
                if (itemDataType.equals("")) {
                    //st = connection.prepareStatement("SELECT d.id, d.name, d.websiteurl, dois.orid, res.ddate, res.downloads, res.views FROM (SELECT coalesce(ds.source, vs.source), coalesce(ds.repository_id, vs.repository_id) AS repository_id, coalesce(ds.date, vs.date) AS ddate, coalesce(ds.sum, 0) AS downloads, coalesce(vs.sum,0) AS views FROM (SELECT s.source, s.repository_id, s.date, sum(s.count) FROM public.downloads_stats s WHERE s.date>=? AND s.date<=? GROUP BY s.source, s.repository_id, s.date) AS ds FULL OUTER JOIN (SELECT s.source, s.repository_id, s.date, sum(s.count) FROM public.views_stats s WHERE s.date>=? AND s.date<=? GROUP BY s.source, s.repository_id, s.date) AS vs ON ds.source=vs.source AND ds.repository_id=vs.repository_id AND ds.date=vs.date) AS res JOIN public.datasource d ON d.id=res.repository_id JOIN public.datasource_oids dois ON d.id=dois.id WHERE (d.type='Journal' OR d.type='Journal Aggregator/Publisher') ORDER BY d.id, d.name, res.ddate ASC;");
                    st = connection.prepareStatement("SELECT d.id, d.name, d.websiteurl, dois.oid, res.`date`, res.downloads, res.views "
                            + "FROM (SELECT us.source, us.repository_id, us.`date`, sum(us.downloads) as downloads, sum(us.views) as views "
                            + "FROM "+usagestatsImpalaDB+".usage_stats us WHERE us.`date`>=? AND us.`date`<=? GROUP BY us.source, us.repository_id, us.`date`) AS res "
                            + "JOIN "+statsDB+".datasource d ON d.id=res.repository_id "
                            + "JOIN "+statsDB+".datasource_oids dois ON d.id=dois.id "
                             + "WHERE (d.type='Journal' OR d.type='Journal Aggregator/Publisher') ORDER BY d.id, d.name, res.`date` ASC;");
                    st.setString(1, beginDateStr);
                    st.setString(2, endDateStr);
                    //st.setString(3, beginDateStr);
                    //st.setString(4, endDateStr);
                } else {
                    //st = connection.prepareStatement("SELECT d.id, d.name, d.websiteurl, dois.orid, res.ddate, res.downloads, res.views FROM (SELECT coalesce(ds.source, vs.source), coalesce(ds.repository_id, vs.repository_id) AS repository_id, coalesce(ds.date, vs.date) AS ddate, coalesce(ds.sum, 0) AS downloads, coalesce(vs.sum,0) AS views FROM (SELECT s.source, s.repository_id, s.date, sum(s.count) FROM public.downloads_stats s, public.result_classifications rc WHERE rc.id=s.result_id AND s.date>=? AND s.date<=? AND rc.type=? GROUP BY s.source, s.repository_id, s.date) AS ds FULL OUTER JOIN (SELECT s.source, s.repository_id, s.date, sum(s.count) FROM public.views_stats s, public.result_classifications rc WHERE rc.id=s.result_id AND s.date>=? AND s.date<=? AND rc.type=? GROUP BY s.source, s.repository_id, s.date) AS vs ON ds.source=vs.source AND ds.repository_id=vs.repository_id AND ds.date=vs.date) AS res JOIN public.datasource d ON d.id=res.repository_id JOIN public.datasource_oids dois ON d.id=dois.id WHERE (d.type='Journal' OR d.type='Journal Aggregator/Publisher') ORDER BY d.id, d.name, res.ddate ASC;");
                    st = connection.prepareStatement("SELECT d.id, d.name, d.websiteurl, dois.oid, res.`date`, res.downloads, res.views "
                            + "FROM (SELECT us.source, us.repository_id, us.`date`, sum(us.downloads) as downloads, sum(us.views) as views "
                            + "FROM "+usagestatsImpalaDB+".usage_stats us, "+statsDB+".result_classifications rc "
                            + "WHERE rc.id=us.result_id AND us.`date`>=? AND us.`date`<=? AND rc.type=? "
                            + "GROUP BY us.source, us.repository_id, us.`date`) AS res "
                            + "JOIN "+statsDB+".datasource d ON d.id=res.repository_id "
                            + "JOIN "+statsDB+".datasource_oids dois ON d.id=dois.id "
                            + "WHERE (d.type='Journal' OR d.type='Journal Aggregator/Publisher') ORDER BY d.id, d.name, res.`date` ASC;");
                    st.setString(1, beginDateStr);
                    st.setString(2, endDateStr);
                    st.setString(3, itemDataType);
                    //st.setString(4, beginDateStr);
                    //st.setString(5, endDateStr);
                    //st.setString(6, itemDataType);
                }
            } else {
                if (itemDataType.equals("")) {
                    //st = connection.prepareStatement("SELECT d.id, d.name, d.websiteurl, dois.orid, res.ddate, res.downloads, res.views FROM (SELECT coalesce(ds.source, vs.source), coalesce(ds.repository_id, vs.repository_id) AS repository_id, coalesce(ds.date, vs.date) AS ddate, coalesce(ds.sum, 0) AS downloads, coalesce(vs.sum,0) AS views FROM (SELECT s.source, s.repository_id, s.date, sum(s.count) FROM public.downloads_stats s WHERE s.date>=? AND s.date<=? AND s.repository_id=? GROUP BY s.source, s.repository_id, s.date) AS ds FULL OUTER JOIN (SELECT s.source, s.repository_id, s.date, sum(s.count) FROM public.views_stats s WHERE s.date>=? AND s.date<=? AND s.repository_id=? GROUP BY s.source, s.repository_id, s.date) AS vs ON ds.source=vs.source AND ds.repository_id=vs.repository_id AND ds.date=vs.date) AS res JOIN public.datasource d ON d.id=res.repository_id JOIN public.datasource_oids dois ON d.id=dois.id WHERE (d.type='Journal' OR d.type='Journal Aggregator/Publisher') ORDER BY d.id, d.name, res.ddate ASC;");
                    st = connection.prepareStatement("SELECT d.id, d.name, d.websiteurl, dois.oid, res.`date`, res.downloads, res.views "
                            + "FROM (SELECT us.source, us.repository_id, us.`date`, sum(us.downloads) as downloads, sum(us.views) as views "
                            + "FROM "+usagestatsImpalaDB+".usage_stats us WHERE us.`date`>=? AND us.`date`<=? AND us.repository_id=? "
                            + "GROUP BY us.source, us.repository_id, us.`date`) AS res JOIN "+statsDB+".datasource d ON d.id=res.repository_id "
                            + "JOIN "+statsDB+".datasource_oids dois ON d.id=dois.id "
                            + "WHERE (d.type='Journal' OR d.type='Journal Aggregator/Publisher') ORDER BY d.id, d.name, res.`date` ASC;");
                    st.setString(1, beginDateStr);
                    st.setString(2, endDateStr);
                    st.setString(3, repositoryIdentifier);
                    //st.setString(4, beginDateStr);
                    //st.setString(5, endDateStr);
                    //st.setString(6, repositoryIdentifier);
                } else {
                    //st = connection.prepareStatement("SELECT d.id, d.name, d.websiteurl, dois.orid, res.ddate, res.downloads, res.views FROM (SELECT coalesce(ds.source, vs.source), coalesce(ds.repository_id, vs.repository_id) AS repository_id, coalesce(ds.date, vs.date) AS ddate, coalesce(ds.sum, 0) AS downloads, coalesce(vs.sum,0) AS views FROM (SELECT s.source, s.repository_id, s.date, sum(s.count) FROM public.downloads_stats s, public.result_classifications rc WHERE rc.id=s.result_id AND s.date>=? AND s.date<=? AND rc.type=? AND s.repository_id=? GROUP BY s.source, s.repository_id, s.date) AS ds FULL OUTER JOIN (SELECT s.source, s.repository_id, s.date, sum(s.count) FROM public.views_stats s, public.result_classifications rc WHERE rc.id=s.result_id AND s.date>=? AND s.date<=? AND rc.type=? AND s.repository_id=? GROUP BY s.source, s.repository_id, s.date) AS vs ON ds.source=vs.source AND ds.repository_id=vs.repository_id AND ds.date=vs.date) AS res JOIN public.datasource d ON d.id=res.repository_id JOIN public.datasource_oids dois ON d.id=dois.id WHERE (d.type='Journal' OR d.type='Journal Aggregator/Publisher') ORDER BY d.id, d.name, res.ddate ASC;");
                    st = connection.prepareStatement("SELECT d.id, d.name, d.websiteurl, dois.oid, res.`date`, res.downloads, res.views "
                            + "FROM (SELECT us.source, us.repository_id, us.`date`, sum(us.downloads) as downloads, sum(us.views) as views "
                            + "FROM "+usagestatsImpalaDB+".usage_stats us, "+statsDB+".result_classifications rc WHERE rc.id=us.result_id "
                            + "AND us.`date`>=?' AND us.`date`<=? AND rc.type=? AND us.repository_id=? "
                            + "GROUP BY us.source, us.repository_id, us.`date`) AS res "
                            + "JOIN "+statsDB+".datasource d ON d.id=res.repository_id "
                            + "JOIN "+statsDB+".datasource_oids dois ON d.id=dois.id "
                            + "WHERE (d.type='Journal' OR d.type='Journal Aggregator/Publisher') ORDER BY d.id, d.name, res.`date` ASC;");
                    st.setString(1, beginDateStr);
                    st.setString(2, endDateStr);
                    st.setString(3, itemDataType);
                    st.setString(4, repositoryIdentifier);
                    //st.setString(5, beginDateStr);
                    //st.setString(6, endDateStr);
                    //st.setString(7, itemDataType);
                    //st.setString(8, repositoryIdentifier);
                }
            }
            //log.error("RR STATEMENT:   " + st);

            /*
            String redis_key = MD5(st.toString());

            if (jedis.hasKey(redis_key, "result")) {
                reportItems.addAll(reportItemsFromJson((String) jedis.get(redis_key, "result")));
                st.close();
                connection.close();
                return;
            }
             */
            rs = st.executeQuery();
            String repository = "";
            String lastDate = "";
            ReportItem reportItem = null;

            /*
            Calendar startCalendar = Calendar.getInstance();
            startCalendar.setTime(beginDate);
            Calendar endCalendar = Calendar.getInstance();
            endCalendar.setTime(endDate);
             */
            int ft_total = 0;
            int abstr = 0;
            if (granularity.equalsIgnoreCase("totals")) {
                while (rs.next()) {
                    if (!rs.getString(1).equals(repository)) {
                        if (reportItem != null) {
                            reportItem.addPerformance(new ItemPerformance(report_dateFormat.format(beginDate), report_dateFormat.format(endDate), Integer.toString(ft_total), Integer.toString(abstr)));
                            reportItems.add(reportItem);
                        }
                        repository = rs.getString(1);
                        reportItem = new ReportItem(null, rs.getString(2), "Platform", null);
                        reportItem.addIdentifier(new ItemIdentifier("OpenAIRE", rs.getString(1)));
                        reportItem.addIdentifier(new ItemIdentifier("ISSN", rs.getString(4).substring(rs.getString(4).lastIndexOf(":") + 1)));
                        if (rs.getString(3) != null) {
                            reportItem.addIdentifier(new ItemIdentifier("URL", rs.getString(3)));
                        }
                        ft_total = 0;
                        abstr = 0;
                    }
                    ft_total += rs.getInt(6);
                    abstr += rs.getInt(7);
                }
                if (reportItem != null) {
                    reportItem.addPerformance(new ItemPerformance(report_dateFormat.format(beginDate), report_dateFormat.format(endDate), Integer.toString(ft_total), Integer.toString(abstr)));
                    reportItems.add(reportItem);
                }
            } else if (granularity.equalsIgnoreCase("monthly")) {
                Calendar endCal = Calendar.getInstance();
                endCal.setTime(postgresFormat.parse(endDateStr));
                endCal.add(Calendar.MONTH, 1);
                Date endDateForZeros = endCal.getTime();
                while (rs.next()) {
                    if (!rs.getString(1).equals(repository)) {
                        if (reportItem != null) {
                            fillWithZeros(postgresFormat.parse(lastDate), endDateForZeros, reportItem);
                            reportItems.add(reportItem);
                        }
                        repository = rs.getString(1);
                        lastDate = beginDateStr;
                        reportItem = new ReportItem(null, rs.getString(2), "Platform", null);
                        reportItem.addIdentifier(new ItemIdentifier("OpenAIRE", rs.getString(1)));
                        reportItem.addIdentifier(new ItemIdentifier("ISSN", rs.getString(4).substring(rs.getString(4).lastIndexOf(":") + 1)));
                        if (rs.getString(3) != null) {
                            reportItem.addIdentifier(new ItemIdentifier("URL", rs.getString(3)));
                        }
                    }
                    fillWithZeros(postgresFormat.parse(lastDate), postgresFormat.parse(rs.getString(5)), reportItem);
                    Calendar endC = Calendar.getInstance();
                    endC.setTime(postgresFormat.parse(rs.getString(5)));
                    endC.set(Calendar.DATE, endC.getActualMaximum(Calendar.DATE));
                    if (reportItem != null) {
                        reportItem.addPerformance(new ItemPerformance(report_dateFormat.format(postgresFormat.parse(rs.getString(5))), report_dateFormat.format(endC.getTime()), rs.getString(6), rs.getString(7)));
                    }
                    endC.setTime(postgresFormat.parse(rs.getString(5)));
                    endC.add(Calendar.MONTH, 1);
                    lastDate = postgresFormat.format(endC.getTime());
                }
                if (reportItem != null) {
                    fillWithZeros(postgresFormat.parse(lastDate), endDateForZeros, reportItem);
                    reportItems.add(reportItem);
                }
            }

            /*
            jedis.put(redis_key, "persistent", "false");
            jedis.put(redis_key, "query", st.toString());
            jedis.put(redis_key, "result", toJson(reportItems));
            jedis.put(redis_key, "fetchMode", "3");
             */
            rs.close();
            st.close();
            connection.close();
        } catch (Exception e) {
            log.error("Repository Report failed: ", e);
        } finally {
            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(st);
            DbUtils.closeQuietly(connection);
        }
    }

    public void executeBatchItems(List<ReportItem> reportItems, String repositoryIdentifier, String itemDataType, Date beginDate, Date endDate, String granularity) {
        SimpleDateFormat report_dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        SimpleDateFormat postgresFormat = new SimpleDateFormat("yyyy/MM");
        String beginDateStr = postgresFormat.format(beginDate);
        String endDateStr = postgresFormat.format(endDate);

        Connection connection = null;
        PreparedStatement st = null;
        ResultSet rs = null;

        try {
            connection = usageStatsDB.getConnection();

            if (itemDataType.equals("")) {
                //st = connection.prepareStatement("SELECT res.result_id, r.title, r.publisher, r.source, rc.type, pids.pid, d.name, res.ddate, oids.orid, res.downloads, res.views FROM (SELECT coalesce(ds.repository_id, vs.repository_id) AS repository_id, coalesce(ds.result_id, vs.result_id) AS result_id, coalesce(ds.date, vs.date) AS ddate, coalesce(ds.sum, 0) AS downloads, coalesce(vs.sum,0) AS views FROM (SELECT s.repository_id, s.result_id, s.date, sum(s.count) FROM public.downloads_stats s WHERE s.date>=? AND s.date<=? AND s.repository_id=? GROUP BY s.repository_id, s.result_id, s.date) AS ds FULL OUTER JOIN (SELECT s.repository_id, s.result_id, s.date, sum(s.count) FROM public.views_stats s WHERE s.date>=? AND s.date<=? AND s.repository_id=? GROUP BY s.repository_id, s.result_id, s.date) AS vs ON ds.result_id=vs.result_id AND ds.date=vs.date) AS res JOIN public.result r ON res.result_id=r.id JOIN public.datasource d ON d.id=res.repository_id JOIN public.result_classifications rc ON rc.id=r.id LEFT JOIN (SELECT pids.id, string_agg(pids.pid, '#!#') AS pid FROM public.result_pids pids, public.result_datasources rd WHERE rd.id=pids.id AND type='doi' AND rd.datasource=? GROUP BY pids.id) AS pids ON pids.id=r.id LEFT JOIN (SELECT oids.id, string_agg(oids.orid, '#!#') AS orid FROM public.result_oids oids, public.result_datasources rd WHERE rd.id=oids.id AND rd.datasource=? GROUP BY oids.id) AS oids ON oids.id=r.id ORDER BY res.result_id, res.ddate;");
                //st = connection.prepareStatement("SELECT res.result_id, r.title, r.publisher, r.source, rc.type, pids.pid, d.name, res.date, oids.orid, res.downloads, res.views FROM (SELECT us.repository_id, us.result_id, us.date, sum(us.downloads) as downloads, sum(us.views) as views FROM public.usage_stats us WHERE us.date>=? AND us.date<=? AND us.repository_id=? GROUP BY us.repository_id, us.result_id, us.date) AS res JOIN public.result r ON res.result_id=r.id JOIN public.datasource d ON d.id=res.repository_id JOIN public.result_classifications rc ON rc.id=r.id LEFT JOIN (SELECT pids.id, string_agg(pids.pid, '#!#') AS pid FROM public.result_pids pids, public.result_datasources rd WHERE rd.id=pids.id AND type='doi' AND rd.datasource=? GROUP BY pids.id) AS pids ON pids.id=r.id LEFT JOIN (SELECT oids.id, string_agg(oids.orid, '#!#') AS orid FROM public.result_oids oids, public.result_datasources rd WHERE rd.id=oids.id AND rd.datasource=? GROUP BY oids.id) AS oids ON oids.id=r.id ORDER BY res.result_id, res.date;");
                st = connection.prepareStatement("SELECT distinct res.result_id, r.title, r.publisher, r.source, rc.type, pids.pid, d.name, res.`date`, oids.oid, res.downloads, res.views "
                        + "FROM (SELECT us.repository_id, us.result_id, us.`date`, sum(us.downloads) as downloads, sum(us.views) as views FROM "+usagestatsImpalaDB+".usage_stats us "
                        + "WHERE us.`date`>=? AND us.`date`<=? AND us.repository_id=? "
                        + "GROUP BY us.repository_id, us.result_id, us.`date`) AS res JOIN "+statsDB+".result r ON res.result_id=r.id "
                        + "JOIN "+statsDB+".datasource d ON d.id=res.repository_id "
                        + "JOIN "+statsDB+".result_classifications rc ON rc.id=r.id "
                        + "LEFT JOIN (SELECT pids.id, group_concat(pids.pid, '#!#') AS pid "
                        + "FROM "+statsDB+".result_pids pids, "+statsDB+".result_datasources rd "
                        + "WHERE rd.id=pids.id AND type='Digital Object Identifier' AND rd.datasource=? "
                        + "GROUP BY pids.id) AS pids ON pids.id=r.id "
                        + "LEFT JOIN (SELECT oids.id, group_concat(oids.oid, '#!#') AS oid "
                        + "FROM "+statsDB+".result_oids oids, "+statsDB+".result_datasources rd "
                        + "WHERE rd.id=oids.id AND rd.datasource=? GROUP BY oids.id) "
                        + "AS oids ON oids.id=r.id ORDER BY res.result_id, res.`date`;");
                st.setString(1, beginDateStr);
                st.setString(2, endDateStr);
                st.setString(3, repositoryIdentifier);
                //st.setString(4, beginDateStr);
                //st.setString(5, endDateStr);
                //st.setString(6, repositoryIdentifier);
                st.setString(4, repositoryIdentifier);
                st.setString(5, repositoryIdentifier);
            } else {
                //st = connection.prepareStatement("SELECT res.result_id, r.title, r.publisher, r.source, rc.type, pids.pid, d.name, res.ddate, oids.orid, res.downloads, res.views FROM (SELECT coalesce(ds.repository_id, vs.repository_id) AS repository_id, coalesce(ds.result_id, vs.result_id) AS result_id, coalesce(ds.date, vs.date) AS ddate, coalesce(ds.sum, 0) AS downloads, coalesce(vs.sum,0) AS views FROM (SELECT s.repository_id, s.result_id, s.date, sum(s.count) FROM public.downloads_stats s WHERE s.date>=? AND s.date<=? AND s.repository_id=? GROUP BY s.repository_id, s.result_id, s.date) AS ds FULL OUTER JOIN (SELECT s.repository_id, s.result_id, s.date, sum(s.count) FROM public.views_stats s WHERE s.date>=? AND s.date<=? AND s.repository_id=? GROUP BY s.repository_id, s.result_id, s.date) AS vs ON ds.result_id=vs.result_id AND ds.date=vs.date) AS res JOIN public.result r ON res.result_id=r.id JOIN public.datasource d ON d.id=res.repository_id JOIN public.result_classifications rc ON rc.id=r.id LEFT JOIN (SELECT pids.id, string_agg(pids.pid, '#!#') AS pid FROM public.result_pids pids, result_datasources rd WHERE rd.id=pids.id AND type='doi' AND rd.datasource=? GROUP BY pids.id) AS pids ON pids.id=r.id LEFT JOIN (SELECT oids.id, string_agg(oids.orid, '#!#') AS orid FROM public.result_oids oids, public.result_datasources rd WHERE rd.id=oids.id AND rd.datasource=? GROUP BY oids.id) AS oids ON oids.id=r.id WHERE rc.type=? ORDER BY res.result_id, res.ddate;");
                st = connection.prepareStatement("SELECT distinct res.result_id, r.title, r.publisher, r.source, rc.type, pids.pid, d.name, res.`date`, oids.oid, res.downloads, res.views "
                        + "FROM (SELECT us.repository_id, us.result_id, us.`date`, sum(us.downloads) as downloads, sum(us.views) as views "
                        + "FROM "+usagestatsImpalaDB+".usage_stats us WHERE us.`date`>=? AND us.`date`<=? AND us.repository_id=? "
                        + "GROUP BY us.repository_id, us.result_id, us.`date`) AS res "
                        + "JOIN "+statsDB+".result r ON res.result_id=r.id JOIN "+statsDB+".datasource d ON d.id=res.repository_id "
                        + "JOIN "+statsDB+".result_classifications rc ON rc.id=r.id "
                        + "LEFT JOIN (SELECT pids.id, group_concat(pids.pid, '#!#') AS pid "
                        + "FROM "+statsDB+".result_pids pids, "+statsDB+".result_datasources rd "
                        + "WHERE rd.id=pids.id AND type='Digital Object Identifier' "
                        + "AND rd.datasource=? GROUP BY pids.id) AS pids ON pids.id=r.id "
                        + "LEFT JOIN (SELECT oids.id, group_concat(oids.oid, '#!#') AS oid "
                        + "FROM "+statsDB+".result_oids oids, "+statsDB+".result_datasources rd "
                        + "WHERE rd.id=oids.id AND rd.datasource=? GROUP BY oids.id) AS oids ON oids.id=r.id "
                        + "WHERE rc.type=? ORDER BY res.result_id, res.`date`;");
                st.setString(1, beginDateStr);
                st.setString(2, endDateStr);
                st.setString(3, repositoryIdentifier);
                //st.setString(4, beginDateStr);
                //st.setString(5, endDateStr);
                //st.setString(6, repositoryIdentifier);
                st.setString(4, repositoryIdentifier);
                st.setString(5, repositoryIdentifier);
                st.setString(6, itemDataType);
            }
            //log.error("IR STATEMENT:   " + st);

            /*
            String redis_key = MD5(st.toString());

            if (jedis.hasKey(redis_key, "result")) {
                reportItems.addAll(reportItemsFromJson((String) jedis.get(redis_key, "result")));
                st.close();
                connection.close();
                return;
            }
             */
            rs = st.executeQuery();
            String result = "";
            String lastDate = "";
            ReportItem reportItem = null;

            int ft_total = 0;
            int abstr = 0;
            if (granularity.equalsIgnoreCase("totals")) {
                while (rs.next()) {
                    if (!rs.getString(1).equals(result)) {
                        if (reportItem != null) {
                            reportItem.addPerformance(new ItemPerformance(report_dateFormat.format(beginDate), report_dateFormat.format(endDate), Integer.toString(ft_total), Integer.toString(abstr)));
                            reportItems.add(reportItem);
                        }
                        result = rs.getString(1);
                        reportItem = new ReportItem(rs.getString(3), rs.getString(7), rs.getString(5), rs.getString(2));
                        reportItem.addIdentifier(new ItemIdentifier("OpenAIRE", rs.getString(1)));
                        reportItem.addIdentifier(new ItemIdentifier("URLs", rs.getString(4)));
                        if (rs.getString(9) != null && !rs.getString(9).equals("")) {
                            if (rs.getString(9).contains("#!#")) {
                                reportItem.addIdentifier(new ItemIdentifier("OAI", rs.getString(9).substring(0, rs.getString(9).indexOf("#!#"))));
                            } else {
                                reportItem.addIdentifier(new ItemIdentifier("OAI", rs.getString(9)));
                            }
                        }
                        if (rs.getString(6) != null && !rs.getString(6).equals("")) {
                            if (rs.getString(6).contains("#!#")) {
                                reportItem.addIdentifier(new ItemIdentifier("DOI", rs.getString(6).substring(0, rs.getString(6).indexOf("#!#"))));
                            } else {
                                reportItem.addIdentifier(new ItemIdentifier("DOI", rs.getString(6)));
                            }
                        }
                        ft_total = 0;
                        abstr = 0;
                    }
                    ft_total += rs.getInt(10);
                    abstr += rs.getInt(11);
                }
                if (reportItem != null) {
                    reportItem.addPerformance(new ItemPerformance(report_dateFormat.format(beginDate), report_dateFormat.format(endDate), Integer.toString(ft_total), Integer.toString(abstr)));
                    reportItems.add(reportItem);
                }
            } else if (granularity.equalsIgnoreCase("monthly")) {
                Calendar endCal = Calendar.getInstance();
                endCal.setTime(postgresFormat.parse(endDateStr));
                endCal.add(Calendar.MONTH, 1);
                Date endDateForZeros = endCal.getTime();
                while (rs.next()) {
                    if (!rs.getString(1).equals(result)) {
                        if (reportItem != null) {
                            fillWithZeros(postgresFormat.parse(lastDate), endDateForZeros, reportItem);
                            reportItems.add(reportItem);
                        }
                        result = rs.getString(1);
                        lastDate = beginDateStr;
                        reportItem = new ReportItem(rs.getString(3), rs.getString(7), rs.getString(5), rs.getString(2));
                        reportItem.addIdentifier(new ItemIdentifier("OpenAIRE", rs.getString(1)));
                        reportItem.addIdentifier(new ItemIdentifier("URLs", rs.getString(4)));
                        if (rs.getString(9) != null && !rs.getString(9).equals("")) {
                            if (rs.getString(9).contains("#!#")) {
                                reportItem.addIdentifier(new ItemIdentifier("OAI", rs.getString(9).substring(0, rs.getString(9).indexOf("#!#"))));
                            } else {
                                reportItem.addIdentifier(new ItemIdentifier("OAI", rs.getString(9)));
                            }
                        }
                        if (rs.getString(6) != null && !rs.getString(6).equals("")) {
                            if (rs.getString(6).contains("#!#")) {
                                reportItem.addIdentifier(new ItemIdentifier("DOI", rs.getString(6).substring(0, rs.getString(6).indexOf("#!#"))));
                            } else {
                                reportItem.addIdentifier(new ItemIdentifier("DOI", rs.getString(6)));
                            }
                        }
                    }
                    fillWithZeros(postgresFormat.parse(lastDate), postgresFormat.parse(rs.getString(8)), reportItem);
                    Calendar endC = Calendar.getInstance();
                    endC.setTime(postgresFormat.parse(rs.getString(8)));
                    endC.set(Calendar.DATE, endC.getActualMaximum(Calendar.DATE));
                    if (reportItem != null) {
                        reportItem.addPerformance(new ItemPerformance(report_dateFormat.format(postgresFormat.parse(rs.getString(8))), report_dateFormat.format(endC.getTime()), rs.getString(10), rs.getString(11)));
                    }
                    endC.setTime(postgresFormat.parse(rs.getString(8)));
                    endC.add(Calendar.MONTH, 1);
                    lastDate = postgresFormat.format(endC.getTime());
                }
                if (reportItem != null) {
                    fillWithZeros(postgresFormat.parse(lastDate), endDateForZeros, reportItem);
                    reportItems.add(reportItem);
                }
            }

            /*
            jedis.put(redis_key, "persistent", "false");
            jedis.put(redis_key, "query", st.toString());
            jedis.put(redis_key, "result", toJson(reportItems));
            jedis.put(redis_key, "fetchMode", "3");
             */
        } catch (Exception e) {
            log.error("Batch Item Report failed: ", e);
        } finally {
            DbUtils.closeQuietly(rs);
            DbUtils.closeQuietly(st);
            DbUtils.closeQuietly(connection);
        }
    }

    private void fillWithZeros(Date from, Date to, ReportItem reportItem) {
        SimpleDateFormat report_dateFormat = new SimpleDateFormat("yyyy-MM-dd");

        Calendar fromCalendar = Calendar.getInstance();
        fromCalendar.setTime(from);

        Calendar toCalendar = Calendar.getInstance();
        toCalendar.setTime(to);
        while (from.before(to)) {
            Calendar temp_c = Calendar.getInstance();
            temp_c.setTime(from);
            temp_c.set(Calendar.DAY_OF_MONTH, temp_c.getActualMaximum(Calendar.DAY_OF_MONTH));
            Date temp_endDate = temp_c.getTime();

            reportItem.addPerformance(new ItemPerformance(report_dateFormat.format(from), report_dateFormat.format(temp_endDate), "0", "0"));
            fromCalendar.add(Calendar.MONTH, 1);
            from = fromCalendar.getTime();
        }
    }
}