view flys-artifacts/src/main/java/de/intevation/flys/artifacts/access/FixAccess.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 a929d9a9fa1e
children
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package de.intevation.flys.artifacts.access;

import de.intevation.artifacts.CallContext;
import de.intevation.flys.artifacts.FLYSArtifact;

import java.util.Arrays;

import org.apache.log4j.Logger;

/** Access for Fixation related data. */
public class FixAccess
extends      RangeAccess
{
    private static Logger log = Logger.getLogger(FixAccess.class);

    protected Long start;
    protected Long end;

    protected Integer qSectorStart;
    protected Integer qSectorEnd;

    protected int [] events;

    protected Boolean preprocessing;

    protected String  function;

    public FixAccess(FLYSArtifact artifact, CallContext context) {
        super(artifact, context);
    }

    public Long getStart() {

        if (start == null) {
            start = getLong("start");
        }

        if (log.isDebugEnabled()) {
            log.debug("start: '" + start + "'");
        }

        return start;
    }

    public Long getEnd() {

        if (end == null) {
            end = getLong("end");
        }

        if (log.isDebugEnabled()) {
            log.debug("end: '" + end + "'");
        }

        return end;
    }

    public Integer getQSectorStart() {

        if (qSectorStart == null) {
            qSectorStart = getInteger("q1");
        }

        if (log.isDebugEnabled()) {
            log.debug("q1: '" + qSectorStart + "'");
        }

        return qSectorStart;
    }

    public Integer getQSectorEnd() {

        if (qSectorEnd == null) {
            qSectorEnd = getInteger("q2");
        }

        if (log.isDebugEnabled()) {
            log.debug("q2: '" + qSectorEnd + "'");
        }

        return qSectorEnd;
    }

    public int [] getEvents() {
        if (events == null) {
            events = getIntArray("events");
        }
        if (log.isDebugEnabled() && events != null) {
            log.debug("events: " + Arrays.toString(events));
        }
        return events;
    }

    public Boolean getPreprocessing() {
        if (preprocessing == null) {
            preprocessing = getBoolean("preprocessing");
        }
        if (log.isDebugEnabled()) {
            log.debug("preprocessing: " + preprocessing);
        }
        return preprocessing;
    }

    public String getFunction() {
        if (function == null) {
            function = getString("function");
        }
        if (log.isDebugEnabled()) {
            log.debug("function: " + function);
        }
        return function;
    }
}
// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

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