fetching list of reactions is faster

persist/src/main/java/lcsb/mapviewer/persist/dao/map/ReactionDao.java

@@ -4,8 +4,10 @@ import java.awt.geom.Point2D;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
+import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 
 import org.apache.commons.lang3.StringUtils;
 import org.apache.logging.log4j.LogManager;
@@ -141,14 +143,17 @@ public class ReactionDao extends BaseDao<Reaction> {
       participantClause = " and element.id in :participant_ids ";
     }
 
+    String queryString = "select reaction, node, line from " + this.getClazz().getSimpleName() + " reaction "
+        + "inner join reaction.nodes node "
+        + "inner join node.element element "
+        + "inner join node.line line "
+        + "where reaction.model in :maps "
+        + idClause
+        + participantClause
+        + removableAndStatemant();
+
     Query<?> query = getSession()
-        .createQuery("select reaction from " + this.getClazz().getSimpleName() + " reaction "
-            + "inner join reaction.nodes node inner join node.element element "
-            + "where reaction.model in :maps "
-            + idClause
-            + participantClause
-            + removableAndStatemant()
-            + " group by reaction")
+        .createQuery(queryString)
         .setParameter("maps", maps);
     if (ids.size() > 0) {
       query.setParameter("ids", ids);
@@ -157,7 +162,14 @@ public class ReactionDao extends BaseDao<Reaction> {
       query.setParameter("participant_ids", participantIds);
     }
 
-    return genericListToReactionList(query.list());
+    Set<Reaction> result = new LinkedHashSet<>();
+
+    for (Object object : query.list()) {
+      Object[] row = (Object[]) object;
+      result.add((Reaction) row[0]);
+    }
+
+    return new ArrayList<>(result);
   }
 
   @SuppressWarnings("unchecked")