avoid Iterator creation if not necessary

rokii · Feb 1, 2017 · a4ce685 · a4ce685
1 parent a464e5a
commit a4ce685
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/logback-core/src/main/java/ch/qos/logback/core/spi/FilterAttachableImpl.java b/logback-core/src/main/java/ch/qos/logback/core/spi/FilterAttachableImpl.java
@@ -48,6 +48,11 @@ public void clearAllFilters() {
      * NEUTRAL, then NEUTRAL is returned.
      */
     public FilterReply getFilterChainDecision(E event) {
+        // avoid Iterator creation if not necessary
+        if(filterList.isEmpty()) {
+            return FilterReply.NEUTRAL;
+        }
+
         for (Filter<E> f : filterList) {
             final FilterReply r = f.decide(event);
             if (r == FilterReply.DENY || r == FilterReply.ACCEPT) {