Mercurial > dive4elements > river
view flys-backend/src/main/java/de/intevation/flys/model/CrossSection.java @ 4573:b87073a05f9d
flys-client: Patch to render combobox options as clickable links.
The way of passing data arguments to the links and further to
the Artifact feeding service is somewhat hacked and should be
refactored (later...).
author | Christian Lins <christian.lins@intevation.de> |
---|---|
date | Tue, 27 Nov 2012 12:50:10 +0100 (2012-11-27) |
parents | 2ae732e2c65c |
children |
line wrap: on
line source
package de.intevation.flys.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 de.intevation.flys.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 :