Examples with CountingInstanceSink eu.esdihumboldt.cst.internal.util.CountingInstanceSink used on opensource projects

Example 1 with CountingInstanceSink

use of eu.esdihumboldt.cst.internal.util.CountingInstanceSink in project hale by halestudio.

the class ConceptualSchemaTransformer method transform.

/**
 * @see TransformationService#transform(Alignment, InstanceCollection,
 *      InstanceSink, ServiceProvider, ProgressIndicator)
 */
@Override
public TransformationReport transform(Alignment alignment, InstanceCollection source, InstanceSink target, ServiceProvider serviceProvider, ProgressIndicator progressIndicator) {
    TransformationReporter reporter = new DefaultTransformationReporter("Instance transformation", true);
    TransformationContext context = new TransformationContext(serviceProvider, alignment);
    TransformationFunctionService functions = serviceProvider.getService(TransformationFunctionService.class);
    final SubtaskProgressIndicator sub = new SubtaskProgressIndicator(progressIndicator) {

        @Override
        protected String getCombinedTaskName(String taskName, String subtaskName) {
            return taskName + " (" + subtaskName + ")";
        }
    };
    progressIndicator = sub;
    target = new CountingInstanceSink(target) {

        private long lastUpdate = 0;

        @Override
        protected void countChanged(int count) {
            long now = System.currentTimeMillis();
            if (now - lastUpdate > 100) {
                // only update every 100
                // milliseconds
                lastUpdate = now;
                sub.subTask(count + " transformed instances");
            }
        }
    };
    progressIndicator.begin("Transformation", ProgressIndicator.UNKNOWN);
    try {
        EngineManager engines = new EngineManager();
        PropertyTransformer transformer = new TreePropertyTransformer(alignment, reporter, target, engines, context);
        Collection<? extends Cell> typeCells = alignment.getActiveTypeCells();
        // sort type cell by priority
        typeCells = sortTypeCells(typeCells);
        for (Cell typeCell : typeCells) {
            if (progressIndicator.isCanceled()) {
                break;
            }
            List<TypeTransformationFactory> transformations = functions.getTypeTransformations(typeCell.getTransformationIdentifier());
            if (transformations == null || transformations.isEmpty()) {
                reporter.error(new TransformationMessageImpl(typeCell, MessageFormat.format("No transformation for function {0} found. Skipped type transformation.", typeCell.getTransformationIdentifier()), null));
            } else {
                // TODO select based on e.g. preferred transformation
                // engine?
                TypeTransformationFactory transformation = transformations.iterator().next();
                doTypeTransformation(transformation, typeCell, source, target, alignment, engines, transformer, context, reporter, progressIndicator);
            }
        }
        progressIndicator.setCurrentTask("Wait for property transformer to complete");
        // wait for the property transformer to complete
        // cancel property transformations if process was canceled - this
        // may leave transformed instances in inconsistent state
        transformer.join(progressIndicator.isCanceled());
        engines.dispose();
        reporter.setSuccess(true);
        return reporter;
    } finally {
        progressIndicator.end();
    }
}