1 files changed, 7 insertions, 0 deletions
diff --git a/java/sca/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/impl/JavaImplementationFactoryImpl.java b/java/sca/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/impl/JavaImplementationFactoryImpl.java
index 0cc78498e6..d6361a5655 100644
--- a/java/sca/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/impl/JavaImplementationFactoryImpl.java
+++ b/java/sca/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/impl/JavaImplementationFactoryImpl.java
@@ -56,6 +56,13 @@ public abstract class JavaImplementationFactoryImpl implements JavaImplementatio
     }
 
     public void addClassVisitor(JavaClassVisitor visitor) {
+        for (JavaClassVisitor tmpVisitor : visitors){
+            if (tmpVisitor.getClass() == visitor.getClass()){
+                // trying to add a duplicate visitor so
+                // ignore it 
+                return;
+            }
+        }
         visitors.add(visitor);
     }