Examples with ProgressListener org.opengis.util.ProgressListener used on opensource projects

Example 1 with ProgressListener

use of org.opengis.util.ProgressListener in project polymap4-core by Polymap4.

the class ColorMap2FilterEditor method createRandomColorMap.

/**
 * Creates a new #colorMap with default color for values of the current #propertyName.
 */
protected void createRandomColorMap() throws IOException {
    colorMap.clear();
    // count occurences; maps property value into count
    Map<Object, AtomicInteger> valueOccurences = new HashMap(MAX_VALUES * 2);
    ProgressListener progress = new DefaultProgressListener();
    site().featureStore.get().getFeatures().accepts(feature -> {
        // get value
        Object value = feature.getProperty(propertyName).getValue();
        valueOccurences.computeIfAbsent(value, v -> new AtomicInteger()).incrementAndGet();
        // check MAX_VALUES
        if (valueOccurences.size() > MAX_VALUES) {
            progress.setCanceled(true);
        }
    }, progress);
    log.info("Color map entries: " + valueOccurences.size());
    if (progress.isCanceled()) {
        StatusDispatcher.handle(new Status(IStatus.INFO, CorePlugin.PLUGIN_ID, i18n.get("tooManyEntries", MAX_VALUES), null), Style.SHOW, Style.LOG);
    } else {
        valueOccurences.entrySet().stream().sorted((e1, e2) -> e2.getValue().get() - e1.getValue().get()).forEach(entry -> colorMap.add(new Triple(entry.getKey(), entry.getValue().get(), DefaultStyle.randomColor())));
    }
}