Example usage for org.apache.commons.collections.map HashedMap mapIterator

Introduction

In this page you can find the example usage for org.apache.commons.collections.map HashedMap mapIterator.

Prototype

public MapIterator mapIterator() 

Source Link

Document

Gets an iterator over the map.

Usage

From source file:com.octo.captcha.engine.bufferedengine.BufferedEngineContainer.java

/**
 * Method launch by a scheduler to swap captcha from disk buffer to the memory buffer. The ratio of swaping for each
 * locale is defined in the configuration component.
 *//* www. ja  v a  2s  .  c  o m*/
public void swapCaptchasFromPersistentToVolatileMemory() {

    log.debug("entering swapCaptchasFromDiskBufferToMemoryBuffer()");

    MapIterator it = config.getLocaleRatio().mapIterator();

    //construct the map of swap size by locales;
    HashedMap captchasRatios = new HashedMap();
    while (it.hasNext()) {

        Locale locale = (Locale) it.next();
        double ratio = ((Double) it.getValue()).doubleValue();
        int ratioCount = (int) Math.round(config.getSwapSize().intValue() * ratio);

        //get the reminding size corresponding to the ratio
        int diff = (int) Math
                .round((config.getMaxVolatileMemorySize().intValue() - this.volatileBuffer.size()) * ratio);

        diff = diff < 0 ? 0 : diff;
        int toSwap = (diff < ratioCount) ? diff : ratioCount;

        captchasRatios.put(locale, new Integer(toSwap));
    }
    //get them from persistent buffer
    Iterator captchasRatiosit = captchasRatios.mapIterator();

    while (captchasRatiosit.hasNext() && !shutdownCalled) {
        Locale locale = (Locale) captchasRatiosit.next();
        int swap = ((Integer) captchasRatios.get(locale)).intValue();
        if (log.isDebugEnabled()) {
            log.debug("try to swap  " + swap + " Captchas from persistent to volatile memory with locale : "
                    + locale.toString());
        }

        Collection temp = this.persistentBuffer.removeCaptcha(swap, locale);

        this.volatileBuffer.putAllCaptcha(temp, locale);
        if (log.isDebugEnabled()) {
            log.debug("swaped  " + temp.size() + " Captchas from persistent to volatile memory with locale : "
                    + locale.toString());
        }
        //stats
        persistentMemoryHits += temp.size();
    }

    if (log.isDebugEnabled()) {
        log.debug("new volatil Buffer size : " + volatileBuffer.size());
    }
    // stats
    persistentToVolatileSwaps++;
}

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