Mercurial > dive4elements > river
view backend/src/main/java/org/dive4elements/river/model/CrossSection.java @ 6229:3fea9701d58d
Fix gauge determination.
If we look upstream ( a > b ) we still have to compare
the start value of our range against the gauge and not the end
value. The start value is always the relevant value as we
handle the direction by checking this against A or B of the gauge.
Also:
I will never compare doubles with == again.
I will never compare doubles with == again.
I will never compare doubles with == again.
I will never compare doubles with == again.
I will never compare doubles with == again.
author | Andre Heinecke <aheinecke@intevation.de> |
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date | Thu, 06 Jun 2013 18:23:17 +0200 |
parents | 4c3ccf2b0304 |
children | 5b1cc816fcdb |
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/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde * Software engineering by Intevation GmbH * * 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; import java.io.Serializable; import java.util.List; import java.util.ArrayList; import java.awt.geom.Point2D; import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.Table; import javax.persistence.GeneratedValue; import javax.persistence.Column; import javax.persistence.SequenceGenerator; import javax.persistence.GenerationType; import javax.persistence.OneToOne; import javax.persistence.OneToMany; import javax.persistence.OrderBy; import javax.persistence.JoinColumn; import java.math.MathContext; import java.math.BigDecimal; import org.hibernate.Session; import org.hibernate.SQLQuery; import org.hibernate.Query; import org.hibernate.type.StandardBasicTypes; import org.dive4elements.river.backend.SessionHolder; @Entity @Table(name = "cross_sections") public class CrossSection implements Serializable { public static final MathContext PRECISION = new MathContext(6); public static final String SQL_FAST_CROSS_SECTION_LINES = "SELECT km, x, y, csl.id AS csl_id " + "FROM cross_section_lines csl JOIN cross_section_points csp " + "ON csp.cross_section_line_id = csl.id " + "WHERE csl.cross_section_id = :cs_id AND " + "km between :from_km AND :to_km " + "ORDER BY csl.id, csp.col_pos"; private Integer id; private River river; private TimeInterval timeInterval; private String description; private List<CrossSectionLine> lines; public CrossSection() { } public CrossSection( River river, TimeInterval timeInterval, String description ) { this.river = river; this.timeInterval = timeInterval; this.description = description; } @Id @SequenceGenerator( name = "SEQUENCE_CROSS_SECTIONS_ID_SEQ", sequenceName = "CROSS_SECTIONS_ID_SEQ", allocationSize = 1) @GeneratedValue( strategy = GenerationType.SEQUENCE, generator = "SEQUENCE_CROSS_SECTIONS_ID_SEQ") @Column(name = "id") public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } @OneToOne @JoinColumn(name = "river_id") public River getRiver() { return river; } public void setRiver(River river) { this.river = river; } @OneToOne @JoinColumn(name = "time_interval_id") public TimeInterval getTimeInterval() { return timeInterval; } public void setTimeInterval(TimeInterval timeInterval) { this.timeInterval = timeInterval; } @Column(name = "description") public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } @OneToMany @OrderBy("km") @JoinColumn(name="cross_section_id") public List<CrossSectionLine> getLines() { return lines; } public void setLines(List<CrossSectionLine> lines) { this.lines = lines; } public List<CrossSectionLine> getLines(double startKm, double endKm) { Session session = SessionHolder.HOLDER.get(); Query query = session.createQuery( "from CrossSectionLine where crossSection=:crossSection " + "and km between :startKm and :endKm order by km"); query.setParameter("crossSection", this); query.setParameter("startKm", new BigDecimal(startKm, PRECISION)); query.setParameter("endKm", new BigDecimal(endKm, PRECISION)); return query.list(); } public List<FastCrossSectionLine> getFastLines( double startKm, double endKm ) { Session session = SessionHolder.HOLDER.get(); SQLQuery sqlQuery = session.createSQLQuery(SQL_FAST_CROSS_SECTION_LINES) .addScalar("km", StandardBasicTypes.DOUBLE) .addScalar("x", StandardBasicTypes.DOUBLE) .addScalar("y", StandardBasicTypes.DOUBLE) .addScalar("csl_id", StandardBasicTypes.INTEGER); sqlQuery .setInteger("cs_id", getId()) .setDouble("from_km", startKm) .setDouble("to_km", endKm); List<Object []> results = sqlQuery.list(); ArrayList<Point2D> points = new ArrayList<Point2D>(500); ArrayList<FastCrossSectionLine> lines = new ArrayList<FastCrossSectionLine>(); Integer lastId = null; Double lastKm = null; for (Object [] result: results) { Double km = (Double)result[0]; Double x = (Double)result[1]; Double y = (Double)result[2]; Integer id = (Integer)result[3]; if (lastId != null && !lastId.equals(id)) { points.trimToSize(); FastCrossSectionLine line = new FastCrossSectionLine(lastKm, points); lines.add(line); points = new ArrayList<Point2D>(500); } Point2D p = new Point2D.Double(x, y); if (CrossSectionLine.isValid(p)) { points.add(p); } lastKm = km; lastId = id; } if (lastId != null) { points.trimToSize(); FastCrossSectionLine line = new FastCrossSectionLine(lastKm, points); lines.add(line); } lines.trimToSize(); return lines; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :