Add extra check for zero child elements when processing the OMElement wrapper.

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1201718 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 8 insertions, 0 deletions

diff --git a/sca-java-2.x/trunk/modules/databinding-axiom/src/main/java/org/apache/tuscany/sca/databinding/axiom/OMElementWrapperHandler.java b/sca-java-2.x/trunk/modules/databinding-axiom/src/main/java/org/apache/tuscany/sca/databinding/axiom/OMElementWrapperHandler.java
index 0c657756a0..09fc0a311b 100644
--- a/sca-java-2.x/trunk/modules/databinding-axiom/src/main/java/org/apache/tuscany/sca/databinding/axiom/OMElementWrapperHandler.java
+++ b/sca-java-2.x/trunk/modules/databinding-axiom/src/main/java/org/apache/tuscany/sca/databinding/axiom/OMElementWrapperHandler.java
@@ -231,6 +231,14 @@ public class OMElementWrapperHandler implements WrapperHandler<OMElement> {
     private List<Object> getInvalidChildren(List<List<OMElement>> groupedElementList, List<ElementInfo> childElements) {
         List<Object> retVal = new ArrayList<Object>();
         
+        // if this is an operation without arguments then it seems that
+        // the groupedElementList can have a list with an empty list in it while
+        // the child elements list is empty. This leads to an IndexOutOfBounds when 
+        // trying to de-reference childElements. So check for this now
+        if (childElements.size() == 0){
+            return retVal;
+        }
+        
         // Since not all the ElementInfo(s) will be represented, (if some elements don't appear as children
         // of the wrapper payload, we need to loop through the schema 
         for (int index=0; index < groupedElementList.size(); index++) {