Mercurial > dive4elements > river
view backend/src/main/java/org/dive4elements/river/model/sinfo/Collision.java @ 9633:b0520a85739d
Nachtrag Pos. 19: query for most recent discharge table added
author | mschaefer |
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date | Thu, 17 Oct 2019 16:48:03 +0200 |
parents | d2472018740c |
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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.ArrayList; import java.util.List; 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.OneToMany; import javax.persistence.OneToOne; import javax.persistence.SequenceGenerator; import javax.persistence.Table; import org.dive4elements.river.backend.SessionHolder; import org.dive4elements.river.model.River; import org.hibernate.Query; import org.hibernate.Session; /** * Hibernate binding for the DB table collision * * @author Matthias Schäfer * */ @Entity @Table(name = "collision") public class Collision implements Serializable { /***** FIELDS *****/ private static final long serialVersionUID = -6950745885816251322L; private Integer id; private River river; private String filename; private String kmrange_info; private String notes; private Integer year; private List<CollisionValue> values; /***** CONSTRUCTORS *****/ public Collision() { } public Collision(final River river, final String filename, final String kmrange_info, final String notes, final Integer year) { this.river = river; this.filename = filename; this.kmrange_info = kmrange_info; this.notes = notes; this.year = year; this.values = new ArrayList<>(); } /***** METHODS *****/ @Id @SequenceGenerator(name = "SEQUENCE_COLLISION_ID_SEQ", sequenceName = "COLLISION_ID_SEQ", allocationSize = 1) @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "SEQUENCE_COLLISION_ID_SEQ") @Column(name = "id") public Integer getId() { return this.id; } public void setId(final Integer id) { this.id = id; } @OneToOne @JoinColumn(name = "river_id") public River getRiver() { return this.river; } public void setRiver(final River river) { this.river = river; } @Column(name = "filename") public String getFilename() { return this.filename; } public void setFilename(final String filename) { this.filename = filename; } @Column(name = "kmrange_info") public String getKmrange_info() { return this.kmrange_info; } public void setKmrange_info(final String kmrange_info) { this.kmrange_info = kmrange_info; } @Column(name = "notes") public String getNotes() { return this.notes; } public void setNotes(final String notes) { this.notes = notes; } @Column(name = "year") public Integer getYear() { return this.year; } public void setYear(final Integer year) { this.year = year; } @OneToMany @JoinColumn(name = "collision_id") public List<CollisionValue> getValues() { return this.values; } public void setValues(final List<CollisionValue> values) { this.values = values; } public void addValue(final CollisionValue value) { this.values.add(value); } /** * Get data series by id */ public static Collision getSeries(final int id) { final Session session = SessionHolder.HOLDER.get(); final Query query = session.createQuery("FROM Collision WHERE (id=:id)"); query.setParameter("id", id); return (Collision) query.list().get(0); } /** * Selects from the database the years of the collisions of a river */ public static List<Integer> getYearsOfRiver(final River river) { final Session session = SessionHolder.HOLDER.get(); final Query query = session.createQuery("SELECT c.year, COUNT(cv) AS count" + " FROM Collision c INNER JOIN c.values cv" + " WHERE c.river=:river" + " GROUP BY c.year" + " ORDER BY c.year"); query.setParameter("river", river); final List<Integer> years = new ArrayList<>(); final List<Object[]> rows = query.list(); if (rows != null) { for (int i = 0; i <= rows.size() - 1; i++) { years.add(Integer.valueOf((int) rows.get(i)[0])); } } return years; } }