commit 329e167a51a8aef874dea9099d65dda9a2547aa8
author margaretha <margaretha@ids-mannheim.de> Tue Jun 20 15:04:24 2017 +0200
committer margaretha <margaretha@ids-mannheim.de> Tue Jun 20 15:04:24 2017 +0200
tree f003c94c95b7f3283f5b2eeb72151fece36df76e
parent 8f5fd5b4e2fbd7729de537bc5731bf72098001c5

Fixed the cost calculation of ElementDistanceSpan.

Change-Id: Ie5c25b1f6f0b028a79c95919836765d18a295830

src/main/java/de/ids_mannheim/korap/query/spans/ElementDistanceSpans.java

diff --git a/src/main/java/de/ids_mannheim/korap/query/spans/ElementDistanceSpans.java b/src/main/java/de/ids_mannheim/korap/query/spans/ElementDistanceSpans.java
index bd7af52..ab86e30 100644
--- a/src/main/java/de/ids_mannheim/korap/query/spans/ElementDistanceSpans.java
+++ b/src/main/java/de/ids_mannheim/korap/query/spans/ElementDistanceSpans.java
@@ -196,7 +196,12 @@
 
     @Override
     public long cost () {
-        CandidateSpan candidateSpan = candidateList.get(candidateListIndex);
-        return elements.cost() + candidateSpan.getCost() + secondSpans.cost();
+        if (!candidateList.isEmpty()){
+            CandidateSpan candidateSpan = candidateList.get(candidateListIndex);
+            return elements.cost() + candidateSpan.getCost() + secondSpans.cost();
+        }
+        else{
+            return elements.cost() + secondSpans.cost();
+        }
     }
 }