Compilation fix

- Required by a merge that skipped a few revisions
 - Will merge fine when it eventually gets hit


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@13543 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/web/ui/common/ReportedException.java

@@ -24,6 +24,10 @@
  */
 package org.alfresco.web.ui.common;
 
+import javax.transaction.UserTransaction;
+
+import org.alfresco.repo.transaction.RetryingTransactionHelper;
+
 /**
  * Unchecked exception wrapping an already-reported exception.  The dialog code can use this to
  * detect whether or not to report further to the user.
@@ -39,4 +43,24 @@ public class ReportedException extends RuntimeException
     {
         super(e);
     }
+    
+    /**
+     * Throws the given exception if we are still in an active transaction,
+     * this ensures that we cross the transaction boundary and thus cause
+     * the transaction to rollback.
+     * 
+     * @param error The error to be thrown
+    * @throws Throwable 
+     */
+    public static void throwIfNecessary(Throwable error)
+    {
+       if (error != null)
+       {
+          UserTransaction txn = RetryingTransactionHelper.getActiveUserTransaction();
+          if (txn != null)
+          {
+             throw new ReportedException(error);
+          }
+       }
+    }
 }