@Override
public void execute() throws IOException, RecommenderBuildException {
LenskitConfiguration dataConfig = input.getConfiguration();
LenskitRecommenderEngineBuilder builder = LenskitRecommenderEngine.newBuilder();
for (LenskitConfiguration config : environment.loadConfigurations(getConfigFiles())) {
builder.addConfiguration(config);
}
builder.addConfiguration(dataConfig, ModelDisposition.EXCLUDED);
Stopwatch timer = Stopwatch.createStarted();
LenskitRecommenderEngine engine = builder.build();
timer.stop();
logger.info("built model in {}", timer);
File output = getOutputFile();
CompressionMode comp = CompressionMode.autodetect(output);
logger.info("writing model to {}", output);
Closer closer = Closer.create();
try {
OutputStream stream = closer.register(new FileOutputStream(output));
stream = closer.register(comp.wrapOutput(stream));
engine.write(stream);
} catch (Throwable th) { // NOSONAR using a closer
throw closer.rethrow(th);
} finally {
closer.close();
}
}
