view flys-backend/src/main/java/de/intevation/flys/model/WstColumnQRange.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 3169b559ca3c
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 = "wst_column_q_ranges")
public class WstColumnQRange
implements   Serializable
{
    private Integer   id;
    private WstColumn wstColumn;
    private WstQRange wstQRange;

    public WstColumnQRange() {
    }

    public WstColumnQRange(
        WstColumn wstColumn,
        WstQRange wstQRange
    ) {
        this.wstColumn = wstColumn;
        this.wstQRange = wstQRange;
    }

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

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

    @OneToOne
    @JoinColumn(name = "wst_column_id" )
    public WstColumn getWstColumn() {
        return wstColumn;
    }

    public void setWstColumn(WstColumn wstColumn) {
        this.wstColumn = wstColumn;
    }

    @OneToOne
    @JoinColumn(name = "wst_q_range_id" )
    public WstQRange getWstQRange() {
        return wstQRange;
    }

    public void setWstQRange(WstQRange wstQRange) {
        this.wstQRange = wstQRange;
    }
}
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