view flys-backend/src/main/java/de/intevation/flys/model/HYKEntry.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 1f21f162bcf3
children
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package de.intevation.flys.model;

import java.io.Serializable;

import java.math.BigDecimal;

import java.util.Date;
import java.util.List;

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;

@Entity
@Table(name = "hyk_entries")
public class HYKEntry
implements   Serializable
{
    private Integer    id;
    private HYK        hyk;
    private BigDecimal km;
    private Date       measure;

    private List<HYKFormation> formations;

    public HYKEntry() {
    }

    public HYKEntry(HYK hyk, BigDecimal km, Date measure) {
        this.hyk     = hyk;
        this.km      = km;
        this.measure = measure;
    }

    @Id
    @SequenceGenerator(
        name           = "SEQUENCE_HYK_ENTRIES_ID_SEQ",
        sequenceName   = "HYK_ENTRIES_ID_SEQ",
        allocationSize = 1)
    @GeneratedValue(
        strategy  = GenerationType.SEQUENCE,
        generator = "SEQUENCE_HYK_ENTRIES_ID_SEQ")
    @Column(name = "id")
    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    @OneToOne
    @JoinColumn(name = "hyk_id")
    public HYK getHYK() {
        return hyk;
    }

    public void setHYK(HYK hyk) {
        this.hyk = hyk;
    }

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

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

    @Column(name = "measure")
    public Date getMeasure() {
        return measure;
    }

    public void setMeasure(Date measure) {
        this.measure = measure;
    }

    @OneToMany
    @OrderBy("formationNum")
    @JoinColumn(name="hyk_entry_id")
    public List<HYKFormation> getFormations() {
        return formations;
    }

    public void setFormations(List<HYKFormation> formations) {
        this.formations = formations;
    }
}
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