view flys-backend/src/main/java/de/intevation/flys/model/Fixpoint.java @ 5779:ebec12def170

Datacage: Add a pool of builders to make it multi threadable. XML DOM is not thread safe. Therefore the old implementation only allowed one thread to use the builder at a time. As the complexity of the configuration has increased over time this has become a bottleneck of the whole application because it took quiet some time to build a result. Furthermore the builder code path is visited very frequent. So many concurrent requests were piled up resulting in long waits for the users. To mitigate this problem a round robin pool of builders is used now. Each of the pooled builders has an independent copy of the XML template and can be run in parallel. The number of builders is determined by the system property 'flys.datacage.pool.size'. It defaults to 4.
author Sascha L. Teichmann <teichmann@intevation.de>
date Sun, 21 Apr 2013 12:48:09 +0200
parents 2246348ff90e
children
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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.Session;
import org.hibernate.Query;
import org.hibernate.annotations.Type;

import com.vividsolutions.jts.geom.Point;

import de.intevation.flys.backend.SessionHolder;


@Entity
@Table(name = "fixpoints")
public class Fixpoint
implements   Serializable
{
    private Integer    id;
    private River      river;
    private Integer    x;
    private Integer    y;
    private BigDecimal km;
    private String     hpgp;
    private Point      geom;

    public Fixpoint() {
    }


    @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 = "x")
    public Integer getX() {
        return x;
    }


    public void setX(Integer x) {
        this.x = x;
    }


    @Column(name = "y")
    public Integer getY() {
        return y;
    }


    public void setY(Integer y) {
        this.y = y;
    }


    @Column(name = "km")
    public BigDecimal getKm() {
        return km;
    }


    public void setKm(BigDecimal km) {
        this.km = km;
    }


    @Column(name = "hpgp")
    public String getHpgp() {
        return hpgp;
    }


    public void setHpgp(String hpgp) {
        this.hpgp = hpgp;
    }


    @Column(name = "geom")
    @Type(type = "org.hibernatespatial.GeometryUserType")
    public Point getGeom() {
        return geom;
    }


    public void setGeom(Point geom) {
        this.geom = geom;
    }


    public static List<Fixpoint> getFixpoints(int riverId) {
        Session session = SessionHolder.HOLDER.get();

        Query query = session.createQuery(
            "from Fixpoint where river.id =:river_id");
        query.setParameter("river_id", riverId);

        return query.list();
    }
}
// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

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