--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-backend/src/main/java/de/intevation/flys/model/CrossSectionTrack.java	Fri Sep 28 12:14:59 2012 +0200
@@ -0,0 +1,135 @@
+package de.intevation.flys.model;
+
+import java.io.Serializable;
+import java.math.BigDecimal;
+import java.util.List;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.OneToOne;
+import javax.persistence.Table;
+
+import org.hibernate.Query;
+import org.hibernate.Session;
+import org.hibernate.annotations.Type;
+
+import com.vividsolutions.jts.geom.LineString;
+
+import de.intevation.flys.backend.SessionHolder;
+
+
+@Entity
+@Table(name = "cross_section_tracks")
+public class CrossSectionTrack
+implements   Serializable
+{
+    private Integer    id;
+    private River      river;
+    private LineString geom;
+    private BigDecimal km;
+    private BigDecimal z;
+
+    public CrossSectionTrack() {
+    }
+
+
+    @Id
+    @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;
+    }
+
+
+    @Column(name = "geom")
+    @Type(type = "org.hibernatespatial.GeometryUserType")
+    public LineString getGeom() {
+        return geom;
+    }
+
+
+    public void setGeom(LineString geom) {
+        this.geom = geom;
+    }
+
+
+    @Column(name = "km")
+    public BigDecimal getKm() {
+        return km;
+    }
+
+
+    public void setKm(BigDecimal km) {
+        this.km = km;
+    }
+
+
+    @Column(name = "z")
+    public BigDecimal getZ() {
+        return z;
+    }
+
+
+    public void setZ(BigDecimal z) {
+        this.z = z;
+    }
+
+
+    public static List<CrossSectionTrack> getCrossSectionTrack(
+        String river)
+    {
+        Session session = SessionHolder.HOLDER.get();
+
+        Query query = session.createQuery(
+            "from CrossSectionTrack where river.name =:river");
+        query.setParameter("river", river);
+
+        return query.list();
+    }
+
+
+    /**
+     * Returns the nearest CrossSectionTrack of <i>river</i> to a given
+     * <i>km</i>.
+     *
+     * @param river The name of a river.
+     * @param km The kilometer value.
+     *
+     * @return the nearest CrossSectionTrack to <i>km</i> of river <i>river</i>.
+     */
+    public static CrossSectionTrack getCrossSectionTrack(
+        String river,
+        double km
+    ) {
+        Session session = SessionHolder.HOLDER.get();
+
+        Query query = session.createQuery(
+            "from CrossSectionTrack where river.name =:river " +
+            "order by abs( km - :mykm)");
+        query.setParameter("river", river);
+        query.setParameter("mykm", new BigDecimal(km));
+
+        List<CrossSectionTrack> cst = query.list();
+
+        return cst != null && !cst.isEmpty() ? cst.get(0) : null;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :