Mercurial > dive4elements > river
view backend/src/main/java/org/dive4elements/river/model/sinfo/DailyDischargeValue.java @ 9614:d889ffe2fb05
Nachtrag Pos. 20: rename type/part to group/type, group added in Infrastructure class
author | mschaefer |
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date | Wed, 09 Oct 2019 19:17:06 +0200 |
parents | 38201f5b0dd9 |
children |
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/* Copyright (C) 2017 by Bundesanstalt für Gewässerkunde * Software engineering by * Björnsen Beratende Ingenieure GmbH * Dr. Schumacher Ingenieurbüro für Wasser und Umwelt * * This file is Free Software under the GNU AGPL (>=v3) * and comes with ABSOLUTELY NO WARRANTY! Check out the * documentation coming with Dive4Elements River for details. */ package org.dive4elements.river.model.sinfo; import java.io.Serializable; import java.util.Date; import java.util.List; import java.util.Map; import java.util.TreeMap; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.JoinColumn; import javax.persistence.OneToOne; import javax.persistence.SequenceGenerator; import javax.persistence.Table; import org.dive4elements.river.backend.SessionHolder; import org.dive4elements.river.model.Gauge; import org.hibernate.Query; import org.hibernate.SQLQuery; import org.hibernate.Session; import org.hibernate.type.StandardBasicTypes; /** * Hibernate binding for the DB table daily_discharge_values * * @author Matthias Schäfer * */ @Entity @Table(name = "daily_discharge_values") public class DailyDischargeValue implements Serializable { /***** TYPES *****/ /** * Field to use in a query's order-by clause * */ public enum OrderByField { DAY, DISCHARGE; } /***** FIELDS *****/ private static final long serialVersionUID = -6192738825193230784L; private Integer id; private DailyDischarge dailyDischarge; private Date day; private Double discharge; /***** CONSTRUCTORS *****/ public DailyDischargeValue() { } public DailyDischargeValue(final DailyDischarge dailyDischarge, final Date day, final Double discharge) { this.dailyDischarge = dailyDischarge; this.day = day; this.discharge = discharge; } /** * Parameter constructor with primitive parameter types */ public DailyDischargeValue(final DailyDischarge dailyDischarge, final Date day, final double discharge) { this(dailyDischarge, day, Double.valueOf(discharge)); } /***** METHODS *****/ @Id @SequenceGenerator(name = "SEQUENCE_DAILY_DISCHARGE_VALUE_ID_SEQ", sequenceName = "DAILY_DISCHARGE_VALUES_ID_SEQ", allocationSize = 1) @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "SEQUENCE_DAILY_DISCHARGE_VALUE_ID_SEQ") @Column(name = "id") public Integer getId() { return this.id; } public void setId(final Integer id) { this.id = id; } @OneToOne @JoinColumn(name = "daily_discharge_id") public DailyDischarge getDailyDischarge() { return this.dailyDischarge; } public void setDailyDischarge(final DailyDischarge dailyDischarge) { this.dailyDischarge = dailyDischarge; } @Column(name = "discharge") public Double getDischarge() { return this.discharge; } public void setDischarge(final Double discharge) { this.discharge = discharge; } @Column(name = "day") public Date getDay() { return this.day; } public void setDay(final Date day) { this.day = day; } /** * Selects from the database the daily discharge values of a gauge and a date range */ public static List<DailyDischargeValue> getValues(final Gauge gauge, final Date startDate, final Date endDate, final OrderByField orderBy) { final Session session = SessionHolder.HOLDER.get(); final String orderField = (orderBy == OrderByField.DISCHARGE) ? "discharge" : "day"; final Query query = session.createQuery("SELECT v" + " FROM DailyDischargeValue AS v JOIN v.dailyDischarge AS s" + " WHERE (s.gauge.id=:gaugeid) AND (v.day BETWEEN :startDate AND :endDate)" + " ORDER BY " + orderField); query.setParameter("gaugeid", gauge.getId()); query.setParameter("startDate", startDate); query.setParameter("endDate", endDate); return query.list(); } /** * Selects from the database the daily discharge, puts the first and the last into a List (min, max day) */ public static Date[] getTimePeriod(final Gauge gauge, final Date fromDay, final Date toDay) { final Session session = SessionHolder.HOLDER.get(); final Query query = session.createQuery("SELECT MIN(v.day), MAX(v.day)" + " FROM DailyDischargeValue AS v JOIN v.dailyDischarge AS s" + " WHERE (s.gauge.id=:gaugeid) AND (v.day BETWEEN :startDate AND :endDate)"); query.setParameter("gaugeid", gauge.getId()); query.setDate("startDate", fromDay); query.setDate("endDate", toDay); final List<Object[]> list = query.list(); if (!list.isEmpty()) { return new Date[] { (Date) list.get(0)[0], (Date) list.get(0)[1] }; } return null; } /** * Fetches a map of minimum+maximum daily discharge dates (or null) by gauge for a list of gauges and a time period */ public static Map<Gauge, Date[]> fetchGaugesTimePeriod(final List<Gauge> gauges, final Date fromDay, final Date toDay) { final Map<Gauge, Date[]> result = new TreeMap<>(); final Map<Integer, Gauge> gaugelookup = new TreeMap<>(); String gaugeids = ""; String sep = ""; for (final Gauge gauge : gauges) { gaugeids += sep + gauge.getId().toString(); sep = ","; result.put(gauge, null); gaugelookup.put(gauge.getId(), gauge); } final Session session = SessionHolder.HOLDER.get(); final SQLQuery query = session.createSQLQuery("SELECT g.id AS gauge_id, MIN(v.day) AS min_day, MAX(v.day) AS max_day" + "FROM (gauges g LEFT JOIN daily_discharge s ON g.id=s.gauge_id)" + " LEFT JOIN daily_discharge_values v ON s.id=v.daily_discharge_id" + " WHERE g.id IN (:gaugeids)" + " AND v.day BETWEEN :fromDay AND :toDay" + " GROUP BY g.id" + "UNION SELECT id, NULL, NULL" + " FROM gauges" + " WHERE id IN (:gaugeids)" + " AND id NOT IN " +" (SELECT s2.gauge_id FROM daily_discharge s2 INNER JOIN daily_discharge_values v2 ON s2.id=v2.daily_discharge_id" + " WHERE v2.day BETWEEN :fromDay AND :toDay)" + "ORDER BY 1") .addScalar("gauge_id", StandardBasicTypes.INTEGER) .addScalar("min_day", StandardBasicTypes.DATE) .addScalar("max_day", StandardBasicTypes.DATE); query.setString("gaugeids", gaugeids); query.setDate("fromDay", fromDay); query.setDate("toDay", toDay); final List<Object[]> rows = query.list(); if (!rows.isEmpty()) { // TODO handle nulls for (int i = 0; i <= rows.size() - 1; i++) result.put(gaugelookup.get(rows.get(i)[0]), new Date[] { (Date) rows.get(i)[1], (Date) rows.get(i)[2] }); return result; } return new TreeMap<>(); } }