Add debug flag.

solve/src/main/jastadd/queries.jrag

 aspect Queries {
 
+  public boolean SocialNetwork.debug = false;
+
   syn int ModelElement.score() = 0;
 
   syn java.util.Set<User> User.getCommentLikerFriends(Comment comment) circular [new java.util.HashSet<User>()];
@@ -71,7 +73,13 @@ aspect Queries {
         }
       }
     }
-    return elements[0].getId() + "|" + elements[1].getId() + "|" + elements[2].getId();
+    if (debug) {
+      return elements[0].getId() + "--" + elements[0].score() +
+        "|" + elements[1].getId() + "--" + elements[1].score() +
+        "|" + elements[2].getId() + "--" + elements[2].score();
+    } else {
+      return elements[0].getId() + "|" + elements[1].getId() + "|" + elements[2].getId();
+    }
   }
 
   syn boolean Submission.hasBetterScoreThan(Submission other) {

solve/src/main/java/de/tudresden/inf/st/ttc18live/AbstractLiveContestDriver.java

@@ -7,6 +7,9 @@ import org.apache.logging.log4j.core.LoggerContext;
 import org.apache.logging.log4j.core.config.Configuration;
 
 import java.nio.file.Path;
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
 
 /**
  * Abstract Driver for a JastAdd solution.
@@ -15,6 +18,7 @@ import java.nio.file.Path;
  */
 public abstract class AbstractLiveContestDriver {
 
+  private Boolean Debug;
   private String ChangePath;
   private String RunIndex;
   private int Sequences;
@@ -31,6 +35,7 @@ public abstract class AbstractLiveContestDriver {
   AbstractLiveContestDriver() {
     ChangeSet = System.getenv("ChangeSet");
     ChangePath = System.getenv("ChangePath");
+    Debug = Boolean.valueOf(System.getenv("Debug"));
     Query = System.getenv("Query").toUpperCase();
   }
 
@@ -112,6 +117,7 @@ public abstract class AbstractLiveContestDriver {
     stopwatch = System.nanoTime();
 
     SocialNetwork socialNetwork = LoadImpl();
+    socialNetwork.debug = Debug;
     if (traceEvents) {
       socialNetwork.enableTracing();
     }
@@ -161,16 +167,19 @@ public abstract class AbstractLiveContestDriver {
     } else {
       iterationStr = Integer.toString(iteration);
     }
-    System.out.println(String.format("%s;%s;%s;%s;%s;%s;Time;%s", Tool, Query, ChangeSet, RunIndex, iterationStr, phase.toString(), Long.toString(stopwatch)));
+    System.out.println(String.format("%s;%s;%s;%s;%s;%s;Time;%s",
+        Tool, Query, ChangeSet, RunIndex, iterationStr, phase.toString(), Long.toString(stopwatch)));
     Runtime.getRuntime().gc();
     Runtime.getRuntime().gc();
     Runtime.getRuntime().gc();
     Runtime.getRuntime().gc();
     Runtime.getRuntime().gc();
     long memoryUsed = Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
-    System.out.println(String.format("%s;%s;%s;%s;%s;%s;Memory;%s", Tool, Query, ChangeSet, RunIndex, iterationStr, phase.toString(), Long.toString(memoryUsed)));
+    System.out.println(String.format("%s;%s;%s;%s;%s;%s;Memory;%s",
+        Tool, Query, ChangeSet, RunIndex, iterationStr, phase.toString(), Long.toString(memoryUsed)));
     if (result != null) {
-      System.out.println(String.format("%s;%s;%s;%s;%s;%s;Elements;%s", Tool, Query, ChangeSet, RunIndex, iterationStr, phase.toString(), result));
+      System.out.println(String.format("%s;%s;%s;%s;%s;%s;Elements;%s",
+          Tool, Query, ChangeSet, RunIndex, iterationStr, phase.toString(), result));
     }
   }