Implement/adapt DoplerStatistics

Author: 6b6279

src/main/java/edu/kit/travart/dopler/transformation/util/DoplerStatistics.java

@@ -0,0 +1,39 @@
+package edu.kit.travart.dopler.transformation.util;
+
+import org.apache.logging.log4j.Logger;
+
+import at.jku.cps.travart.core.common.IStatistics;
+import edu.kit.dopler.model.Dopler;
+
+public class DoplerStatistics implements IStatistics<Dopler> {
+	
+	private static DoplerStatistics instance;
+
+	private DoplerStatistics() {}
+
+	public static DoplerStatistics getInstance() {
+		if (instance == null) {
+			instance = new DoplerStatistics();
+		}
+		return instance;
+	}
+
+	@Override
+	public int getVariabilityElementsCount(Dopler model) {
+		// TODO Is is the right way to calculate size for DOPLER decision models?
+		// Previously: Only #decisions + #assets
+		return model.getDecisions().stream().mapToInt(e -> e.getRules().size()).sum()
+				+ model.getAssets().size();
+	}
+
+	@Override
+	public int getConstraintsCount(Dopler model) {
+		return model.getDecisions().size();
+	}
+
+	@Override
+	public void logModelStatistics(Logger logger, Dopler model) {
+		logger.info("TODO: Implement statistics overview message for DOPLER");
+	}
+
+}