Fix random concurrent update problem when transforms are loaded by synchronizing access to the load method

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@695908 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 3 insertions, 2 deletions

diff --git a/java/sca/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DefaultTransformerExtensionPoint.java b/java/sca/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DefaultTransformerExtensionPoint.java
index 2ab9471c91..7aa55d2cff 100644
--- a/java/sca/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DefaultTransformerExtensionPoint.java
+++ b/java/sca/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/DefaultTransformerExtensionPoint.java
@@ -94,13 +94,14 @@ public class DefaultTransformerExtensionPoint implements TransformerExtensionPoi
      * Dynamically load transformers registered under META-INF/services.
      *
      */
-    private void loadTransformers() {
+    private synchronized void loadTransformers() {
         if (loadedTransformers) {
             return;
         }
+        loadedTransformers = true;
         loadTransformers(PullTransformer.class);
         loadTransformers(PushTransformer.class);
-        loadedTransformers = true;
+        
     }
 
     /**