view flys-backend/src/main/java/de/intevation/flys/model/Annotation.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 8076f6a689d0
children
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package de.intevation.flys.model;

import java.io.Serializable;

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.JoinColumn;

@Entity
@Table(name = "annotations")
public class Annotation
implements   Serializable
{
    private Integer        id;
    private Range          range;
    private Attribute      attribute;
    private Position       position;
    private Edge           edge;
    private AnnotationType type;

    public Annotation() {
    }

    public Annotation(
        Range          range,
        Attribute      attribute,
        Position       position,
        Edge           edge,
        AnnotationType type
    ) {
        this.range     = range;
        this.attribute = attribute;
        this.position  = position;
        this.edge      = edge;
        this.type      = type;
    }

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

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

    @OneToOne
    @JoinColumn(name = "range_id")
    public Range getRange() {
        return range;
    }

    public void setRange(Range range) {
        this.range = range;
    }

    @OneToOne
    @JoinColumn(name = "attribute_id")
    public Attribute getAttribute() {
        return attribute;
    }

    public void setAttribute(Attribute attribute) {
        this.attribute = attribute;
    }

    @OneToOne
    @JoinColumn(name = "position_id")
    public Position getPosition() {
        return position;
    }

    public void setPosition(Position position) {
        this.position = position;
    }

    @OneToOne
    @JoinColumn(name = "edge_id")
    public Edge getEdge() {
        return edge;
    }

    public void setEdge(Edge edge) {
        this.edge = edge;
    }

    @OneToOne
    @JoinColumn(name = "type_id")
    public AnnotationType getType() {
        return type;
    }

    public void setType(AnnotationType type) {
        this.type = type;
    }
}
// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

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